US2352580A - Coil forming drum - Google Patents

Description

June 27, 1944.. F. l.. WETTENGEL COIL FORMING DRUM 5 Sheets-Sheet l Filed Oct. 9, 1940 NNN mmm M N Il NN INVENTOR. ZWMWMM ATTORNEYS F. L. WETTENGEL COIL FORMING DRUM June 27, 1944.

June 27, 1944. F. L. WETTENGEL COIL FORMING DRUM Fil'ed 0012. 9, 1940 5 Sheets-Sheet 5 m? @E mm. v. S1 m%\ n. N

m ENQ ATTORNEY 5 June 27, 1944, F. 1 WETTENGEI.

COIL FORMING DRUM,

l Filed oet. 9, 1940 5 Sheets-Sheet 4 mm. mn. mm.

INVENTOR.

ATTORNEYS S'IIOD .U10

QJmTm WM-tmm June 27, 1944.

FIGA@ aos zoe `zoo . F. L. WETTENGEL -con. FORMING DRUM 5 Sheefs-Sheety 5 Filed Oct. 9, 1940 2' lNvENToR BY y AORNEYS Patented June 27, 1944 UNIT-ED STATES PATENT OFFICE 2,352,580 con. FonMxNG DRUM Frank L. wetngei, Pittsburgh, ra.

Application October 9, 1940, Serial No. 360,479

3': claims. (cl. 242-78) This invention relates to improved means for forming coils of strip metal, particularly strips of magnetic iron or steel in conjunction with cold reducing mills or any other processing equipment requiring the coiling of the strip.

This invention embodies the economic coiling of all kinds of strip, particularly steel strip, after the various processings through which it passes especially where the strip is coiled under tension beyond the elastic limit of the steel.

This coiling is done on various forms of cylindrical drums, viz; solid drums andcollapsibleexpanding drums. The collapsible expanding type of drums which necessarily are of the overhung or cantilever type are preferable because when the drum is collapsed the coil can be removed or stripped bodily, longitudinally with the axis of the drum.

Most of these coliler drums consist of a long shaft, the rear approximate half being provided with the necessary driving gears and the shaft is mounted in bearings of a drive frame necessary to rotate the drum. The front or overhung portion ofthe shaft carries the drum which usually consists of several segments hinged to each other, forming a cylindrical drum which is longitudinally, rotatably mounted on said overhung shaft.

VThe segments are expanded and collapsed by various means such as wedges, rollers, toggles and cams formed on portions of the segments and on theshaft inside the drum` segments while the collapsing is accomplished with springs.

It is advantageous when coiling thin material to keep the drum as small in diameter as possible so the thin limber inside convolutions will retain their cylindrical shape and not collapse filling andslipping out sideways from the hollow center of the coil thus preventing mounting the coil for future processing.

It is obvious especially in the small diameter drums that due to the space occuped-bythese many roller expanding parts that the cam shaped shaft inside the drum is smallest and weakest at the end of the segments near the drive .where it should be the strongest.

Where rollers and cams are used to expand the segments it is obvious there is only a line contact between the various parts and this line contact is only effective about half f the length of the drum due to the necessity of holding the rollers, etc., in place with bearings, -cages and other devices and no material has been found that will withstand this line contactl crushing effect of the larger coils.

In this type of drum the segments are held expanded position by the rollers passing the ridge of the cam and when collapsed it happens v its overhungend and attaining the largest diameter at its supporting bearing isa distinct advantage in view of the heavy tension it must f exert on the strip as well as sustain the weight of a coil Weighing 25,000 pounds or more.

While the foregoing describes very briefly a part of the coiling art and some coiling equipment with the diillculties encountered, it will be l obvious to those skilled in the art that there are numerous deviations from the above.

With the object of eliminating as many of the coiling difficulties as possible some of which are outlined above, I have devised a new design of coiling drum of the collapsible-expanding type with its necessary auxiliary equipment, and I have adapted to this type of drum as an additional feature, the use of embedded electromagnet coils to magnetize the entire drum surf-ace which will attract the strip end which becomes attached to the revolving drum and is carried around it for the first convolution. n

Some of the other objects of this invention are lio--- Provide a new design of coiling drum of the overhung or cantilever type wherein the segments upon longitudinal movement are expanded and collapsed on and between inclined surfaces integral with the rotating shaft.

Provide a drum, without rollers or cams, in which the crushing eect of the coil on the segments is distributed over large surfaces of theY shaft instead of the short line contacts of the rollers and cams.

Provide a. drum in which-a larger diameter rotating shaft replaces, roller expanding mechanisms with the shaft diameter progressively increasing from its overhung end toward its sup-` porting bearing where the bending moment is the greatest.

Provide a drum whose shaft diameter is larger therefore stronger for a minimum diameter of drum than is possible with the present designs.

thus being capable of producing, without bending, a coiling tension in steel strip beyond the elastic limit of the strip with a smaller diameter drum.

Provide hydraulic or screw and nut mechanism to produce longitudinal movement of the drum segments on the rotating overhung shaft which will positively collapse or expand the drum.

Provide rotating clutching means to operate the nut on the screw which will collapse, expand or hold the drum in any desired locked position, and at any desired speed, andby limit switch mechanism will positively and completely disconnect the rotating means from the nut when the drum becomes completely collapsed or completely expanded.

Provide current supply switch, telescoping conductors and collector rings for energizing electro-magnetic coils embedded in the drum segments which are arranged so the magnetic poles of the segments come in direct contact with and produce greater attraction for the strip, the end of which will be attracted and attached to the magnetized segments, thus adhering to the drum and be wound around its surface as it revolves thus forming the first convolution of the coil.

Provide coiling equipment that is simple of design; will have the desired very sturdy construction, be economical to manufacture, install, maintain and operate and also embodies other valuable advantages and novel features which will be apparent from the following detail description taken in conjunction with the accompanying drawings wherein like numerals represent corresponding parts in the various figures. To the foregoing objects and to others which may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts as will be more specifically referred to and illustrated in the accompanying drawings wherein are shown embodiments of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawings:

Figure 1 is a longitudinal vertical section of a complete coiling unit with a magnetic coiling drum hydraulically collapsed and expanded and constructed in accordance with the features of the :present invention.

Figure 2 is an enlarged longitudinal section on the line 2-2 of Figure 6 showing the magnetic collapsible-expanding coiling drum.

Figure 3 is an enlarged section through the extendible connector contact for the electro-magnetic coils.

Figure 4 is a longitudinal vertical section of a motor operated, magnetic clutch connected, collapsible-expanding vmechanism with its schematic wiring control diagram.

Figure 5 is a longitudinal vertical section of another form of a motor operated, friction clutch connected, collapsible-expanding mechanism, with its schematic wiring and piping control dlagram.

Figure 5A is a fragmentary sectional view of the solenoid operated valve in another position.

Figure 6 is a transverse vertical cross section of the magnetic, collapsible-expanding coiling drum taken on the line 5 6, Figure 2.

Figure 'l is a transverse vertical cross section of the magnetic, collapsible-expanding coiling drum taken on the line 1-1, Figure 2.

' Figure 8 is a transverse vertical cross section ci. the collapsible-expanding mechanism taken on the line 8-8, Figure4 and Figure 5.

Figure 9 is a transverse vertical cross section of the collapsible-expanding mechanism taken on the line 8 8, Figure 4 and Figure 5.

Figure 10 is a fragmentary view of the telescopic joint between the collapsible drum segments. looking radially toward the center of the drum, the arch plates being removed. Y

Figure 10A vis a view similar to Figure 10 but showing a dovetal joint between the segments.

In the embodiments of this invention herein illustrated in the various figures, there is first provided in Figure l, a magnetic collapsible-expanding cylindrical coiling drum consisting of a hollow central driving shaft I, supported in the manner of a cantilever by a combined radial and thrust bearing 2, on the rear end pf the shaft and a parallel bearing 3, near the longitudinal center of the shaft with the overhung end of the shaft forming the core of the drum. In these specifications the expression front" or front end means the end at the right hand of illustrating Figures 1-2-4-5 and conversely "rear or rear end" means the left hand end.

The bearings are mounted or carried by a drive frame or hou-sing 4, made in suitable sections for assembling and dismantling. A drive gear 5 is keyed to the shaft I, and meshes with a pinion 6, carried by shaft 1, which is rotatable in bearings 8. The bearings 8 are held by retainers 9,

and the shaft 1 is connected to a motor I0 by coupling I I. A brake I2, spring set and magnetic released in series with the motor, arrests and prevents rotation of the shaft 1 when motor I0 is not in operation. Outer races of bearing 2, also of bearing 3, are held in the drive frame 4 by retainers I3 and Il, respectively. The single reduction drive illustrated and described above is only a typical arrangement. Double reductions and other arrangements of motor and gears are equally adaptable for rotating the shaft and drum.

The coiling drum proper is shown in larger scale in Figures 2, 3, 6, 7 and 10. The drive shaftdrum core I is the foundation around which the collapsible-expanding cylindrical drum to be hereinafter described and consisting of segments together with the necessary collapsing-expanding discs, rings, etc., are built, all of which will first be described without the magnetic feature. 'I'he drive shaft-drum core I is a hollow shaft provided outwardly of the anti-friction bearing 3 with a plurality of spaced apart frusta-conical surfaces of which I5 is the innermost and largest in diameter, IB is the intermediate surface and smaller in diameter than surface I5 and I1 is the outermost and is smaller in diameter than surface I6. The shaft I is formed with a stud I8 at its outer end which serves to support and keep the various drum members concentric.

The outer periphery of the cylindrical drum is formed of a plurality of segments and in the present instance with three segments I9, whose outside diameters correspond to the expanded drum diameter and whose inside diameters when A collapsed are somewhat larger than the shaft drum core I. On theinternal surface of these segments are provided internal frusto-conical surfaces I5, IG and I1* co-related when the segments are expanded with surfaces I5-I6 and I1, respectively, on the shaft 'drum core. The rear ends of Athese gments are provided with an external frusto-conical surface 28 and the inasoa'sso l 3 all or them longitudinally forward. The proicctternal diameter 2i is a continuation of frustaconical surface I5* but slightly larger.

At the rear end of the segments is provided a retaining collar 22 xed to the shaft drum core I asbyakeyorthe like andrecessedasat 22* to provide for the longitudinal movement of the segments I3. The collar 22 is also formed with a sides of the bearing 3 and position and retain the inner race of the bearing 3 in place.

The front ends of the segments I9 are provided with projecting tongues 26 whose shape are truste-conical each of whose width is only about half of the segment width. On the outer end of the shaft drum core I is attached a collapsing disc 21 (partly broken away in Figure 6 to show the tongue 26 more clearly) formed with segmental slots 28 slightly wider than the projecting tongues 26 and the large diameter surface of the slot corresponds with the frusto-conical surface of the projecting tongues 26. All of these external and internal frusta-conical surfaces have the same angle with relation to the axis of the drum practically parallel movement of the segments I9.

The front ends of the segments I9 are provided with .a right angular extension 29 which also forms an internal flange forv collapsing the segments I3. The outside diameter of this extension 23 is concentric with the expanded diameter of the drum and provides a stop to center the the disc 30 is formed with a ange 3l which engages a flange 3la at the outer end of each segment to limit expansion of the segments. Attached to the rear face of the disc 30 is a segment collapsing ring 32 having a flange y32a engageable with the extensions 29 on the segments I3. Keys 33 are provided between the surfaces I5, I5; I6, |63; and I1 and I1a to prevent circumferential rotation of the segments I9 on the shaft drum core I sbut provide for longitudinal movement of the segments relative to the coreor shaft I. y

Shaft-drum core I; inner race of bearing 3; spacer sleeves 24 and'25; retaining collar 2'2; segment collapsing ring 23; keys 33 and segment collapsing disc 21 are all fixed as by screws, keys. welding or otherwise to each other so as to form one unitary structure. The movement of each segment `I 6 from avcollapsed to an expanded position is indicated by the numeral 34. Expanding disc 3U and collapsing ring 32 are fixed together as by screws or other fastening means 3|)b and are attached to rod 35 by fastening means 35a. Rod 35 is slidable in the base of the drive shaft bore.

, like edge zus.

formed on its supporting segment, and when the ing tongues 26 'which engage in the slots 26 of the collapsing disc 21, and the rear end frusta-conical surface 26 which engages collapsingring 23, will effect inward movement of the segments i6 to a collapsed position coincident with the outward longitudinal movement of the segments.

To expand the drum, the longitudinal movement of the rod 35 is reversed. Thesegmentswill move rearwardly and outwardly on frusto-conical surfaces I5, I6 and I1, expanding the segments until segment extension 26 engages the rim extension 3I of expanding disc 30, and the voutside segment surface engages cylindrical surface" 26 'of the collapsing ring 23 -both of which limit the expansion and provide a perfect concentric cylindrical drum. l

'To provide for the shorter periphery when the drum is collapsed, agtelescopic joint is provided at the edges of the segments which are mortised with parallel tongue I9 and groove I3b as shown in Figure l0, or dovetail as shown at I9 and I6*i in Figure 10A. The relative positions ofthe edges of the segments when they are expanded are more clearly shown in Figures 10 and 10A.

In order to provide a continuous cylindrical surface these grooves and gaps between the segments are covered by arch plates 201 of springy material (not shown in Figure 10 or 10A but similar to that shown at 201, Figure 7) curved to conform with the cylindrical surface of the drum and having one edge rigidly` attached to one segment and made of such width that it spans thejoint gaps and slidingly engages on the adjoining segment but is unattached and hasr a beveled wedge- A corresponding bevel 203'* is drum is collapsed, the periphery shortens and the bevel on the unattached end of the arch plate follows the correlated bevel 208 on the segment and telescopes along its surface.`

Longitudinal -movement of rod 35 to effect collapsing and expanding of the drum is produced either hydraulically as shown in Figure 1 or by screw and nut which will be described later. Referring to Figure 1, a hydraulic rotating type cylinder 36 is screwed or otherwise rigidly attached to the rear end of the driving shaft I so its cylindrical axis coincides with the longitudinal axis of the shaft, drum and rod all of which are identical. A sleeve 31 is provided between the cylinder and the inner race of bearing 2 rigidly clamping it on shaft i. As this bearing 2 is a combined radial and thrust bearing, it arrests any longitudinal movement of the shaft and drum, with any slight expansion provided for by roller Ihearing 3.

Cylinder 36 is provided with the .usual stulng box bush 3B, packing 39, gland III) and piston 4I.

y rigidly attached to rod 35 which becomes the pis- The operation of contracting the drum which in Figures '1 and 2 is shown expanded is as folton rod. Cylinder head 42 has attached the spindle r rotating plug 43 of the rotating joint connection through which liquid pressure is supplied to the cylinder. The longitudinal axis of this plug coincides with the axis of the cylinder 36 and drive shaft I and therefore there is no radial or longitudinal motion, only rotary. The body 44 of the rotary joint is held on the plug 43 by washer 45 with its necessary screws and cap 46 encloses these parts.

Body 44 has annular ports 41,48 and 49. Annular port 41 coincides with port 50 in plug 43 and leads through the plug and the cylinder head 42 and through the side wall of cylinder 36 to the u te the rear end of the cylinder. Annuler port 41 is connected to a four way valve 52 by pipe 53 and annular port 48 is connected by pipe 54.

Pipe 55 connects to the body of the rotating joint and drains any leakage which gathers in handle 53 of the four way valve 52 is admitting liquid pressure to the front end of cylinder 36 and exhausting it from the rear end; in position 08 the liquid is locked in both ends -of the cylinder and holds the drum in whatever expanded or collapsed' position it is when the valve 1s turned te this position, in position 8| liquid pressure is admitted to the rear end of cylinder 35 and the front end is exhausting thereby collapsing the drum.

, Some engineers object to liquid pressure for operating equipment I have devised a motor connected, collapsing-expanding mechanism as and to meet this objection operated, magnetic 4clutch shown in Figure 4 and a similar arrangement except that the connection is made by a friction clutch as shown in Figure 5 with sections shown in Figures 8 and 9.

In Figures 4 and 5, the radial and thrust bearing 2, retainer I3 and partly shown drive frame 4, drive gear 5, and the balance of the drive (not shown) is the same as described in connection with Figure 1. The drive shaft-drum core I and rod 35 are identically the same from radial andL thrust bearing 2 forwani to the end of the ceiling drum but to the rear of this bearing the shaft l and rod 35 are entirely different embodying a screw thread 10 on rod 35 and nut 1|.

The sole object of this mechanism is to produce, independent of shaft I a power rotating means for screwing on and unscrewing of nut 1| f on thread 10 of rod 35, which can be perfectly controlled and will produce positive longitudinal movement in either direction of rod 35 when it of which the gear box 83 is to reduce speed and increase power. The motor proper 84 which is preferably series wound has keyed on its armature shaft the brake drum 85 of a series brake which applies the brake shoes 80 with` a spring and releases them by a magnet 81. Mounted on clutch magnet eld member and hub 80 are two annular collector rings 88 and 88 insulated from the hub by sleeve 30.

Ink this description the word insulation or a derivative thereof will mean a non-conductor oi' electricity. Collector ring 88 is connected by'a conductor 3| and ring 89 by conductor 32 to clutch magnetizing coil 8|, all properly insulated. Brushes for these rings are identified by 33 and 34, respectively.

For arresting movement at the proper instant, I have devised a special limit switch for which there are provided two annular collector rings 85 and 3B mounted on nut 1| and insulated therefrom by sleeve 31. Also mounted on this sleeve is contact finger 98 connected to ring 96 alsocontact flnger 99 connected to ring 95 by conductor |00. Brushes for rings 85 and 95 are indicated by |0| and |02, respectively. As several revolutions of nut 1| on screw thread 10 will be nec essary to secure the desired longitudinal movement of rod 35, and to prevent the contact iin- - gers 98 and 93 making connection after one revo.-

lution, there is provided a floating contact with wedge shaped ends |03 carried by insulation supis at rest or rotating in either direction, also to arrest this movement at exactly the correctinstant; the parts being arranged so the stress caused by a coil wound on the drum will be taken directly by shaft Yrod preferably in tension and nut 1|, also so the nut rotating means will be completely disconnected from the nut and can remain inoperative while the coil is being formed.

In this mechanism the end of rod 35 extends of shaft the extension being threaded as at 10 and having a sleeve-like nut 1| with a corresponding thread, the outer end of the nut 1| abutting the rear end of shaft I. The outer end of the nut is formed with a flange 1|a and cellar 12 encircling the end of and carried by shaft the end of which is groovedto receive a split retaining collar 13 and a deeper groove for the bifurcated collar 14. On the opposite end of the nut 1| vis screwed or otherwise attached the armature hub 15, armature spring platel and magnet armature member 11 cf a beyond the end magnetic' clutch. Hub 15 is prevented from roport |04 attached to floating or pilot nut |85 having a width of several times the movement desired in rod 35.

The outside diameter of nut flange 1 |n and collar 12 are somewhat larger than the outside diameter' of retaining collar 13 and is provided with a thread |05 the same pitch and number of threads per inch as thread 10 on rod 35. The inside diameter of pilot nut |05 has a corresponding thread and the outside diameter 'has mounted thereon an insulation sleeve |01 and wide. face annularY collector ring |08, which is connected to floating contact |03 by a conductor I08and is provided with brush H0.

Pilot nut |05 has an integral projecting pawl |I| considerably longer than the movement desired in rod 35 and is used to permit longitudinal movement but to restrain circumferential rotation of the pilot nut with relation to shaft I, which is accomplished by the pawl I projecting through the bifurcation 14* on collar 14 which is made in halves and prevented from rotating on shaft by dowel pin ||2.

A sleeve ||3 between the bifurcated collar14 and inner race of radial and thrust bearing 2 rigidly clamps the inner race n shaft arresting any longitudinal movement of the equipment. The longitudinal axes of all rotating parts are in line and they are therefore concentric with each other. Rod 35 has an integral key ||4 which slides in keyway ||5 in the hollow of shaft I and provides for limited longitudinal movement but prevents rotative motion with relation to shaft I.

Shaft I, inner race of bearing 2, sleeve ||3,.bi furcated collar 14 and dowel ||2 are attached by various means to each other thereby forming an integral unit which isadapted to rotateas such. Nut 1|, 12, retaining collar 13, hub`15, spring plate 15, magnet armature 11, key 18, collector rings and 96, insulation sleeve 31, contact ngers 98 and 38, also connector |00, are attached to each other forming an integral unit and provides for rotation in either direction regardless 750 of whether shaft is rotating or at rest.`

ments, etc., forming the circuits from the main switch 8|. The gear motor circuit starting at switch terminal |82 passes through |84,L, |2|, RI, R2, R8, R4, R5, |85, |88, 81, ries brake releasing it', |31, series field, |88, E, |25, F, |48, armature, |88, C, |28, B, |4|, blowout coils, |42, |48, |28, |28, |44 to |88 main switch terminal causing clockwise rotation of motor and magnet field member of magnetic clutch.

The circuit for this clutch is the same as before starting at conductor |85 where it joins .|88 through |45, 84, 88, 82, 8|, 8|, 88, 88, |48, |48, |28, |28, |44 to switch terminal |88 completing the circuit, and energizing the magnetic clutch and connecting it with its amature 11 and nut 1| with gear motor withv nut 1| through the friction clutch.

. Pressure for operating cylinder |82 is supplied through pipes |88 and |84 by a solenoid controlled four waypiston valve. 'I'he body of the valve is designated |85 and the slidable valve is designated |88. The valve |88 is moved longitudinally of the body |85 by solenoids |81 and |88, each solenoid when energized. pulling the valve |85in one direction. The fiuid pressure for the cylinder |82 is suppliedthrough pipe |88 and its attachments as previously described except f that the rotation is in the opposite direction or clockwise, moving rod 85 forward or away from the gearmotor 84 which collapses4 the coiling drum.

Screw rod 85 and pilot nut |85 with their ab tachments start the collapsing operation from the position shown in Figure 5 and complete it when thepositions shown in Figure 4 are reached, when the circuits must be broken. This is e'ected by current passing through the limit switch circuit from resistance |21 to conductor |41, Ill, |88, |88, |88, 88,' |88, 85, |8|, |5|, SI, |24, S2, |48, |88, |58, |44, to switch terminal |88. This closes the limit switch circuit and energizes electro-magnet |88 of magnetic contactor |28 (normally closed), which opens the contacts |28 and breaks the main line circuit disconnecting the electrical equipment. The brake spring thereafter applies the .brake, all as described with the counterclockwise rotation.

Figure 5 also shows a collapsing expanding mechanism in which the connection' between the gearmotor and nut 1| is effected 'by a friction type of clutch. In this arrangement the shaft rod 85, pilot nut |85 and drive frame 4 with all their attached parts are identically the same as .Figure 4. Nut 1| and all its attachments are the same except that armature hub 15, spring plate 18 and magnet armature member 11 are replaced by the cup-shaped clutch member |18 of a -cone type friction clutch with hub cast integral and screwed or otherwise attached to nut 1| with key 18 preventing rotation on nut 1|.

The gearmotor unit is the same except that it has a longer' shaft |1| to provide a mount for a friction clutch cone member |12 with friction lining '|8. A hub |14 is carried by the clutch member |12 and is provided with a groove |14* for a trunnionedshifting yoke |15. Hub |14 has a sliding fiton shaft |1| being splined on this shaft to prevent rotation of the hub on the shaft.

exhausts through pipe |88. Pressure port |8| communicates with pipe |88 and'pressure port |82 communicates with pipe |84 and exhaust port |88 communicates with the exhaust pipe |88.

The control for the gearmotor and series brake are identically thesame as shown in Figure 4 with the magnetic clutch circuit omitted. For controlling the solenoidsV on the four way valve and limit switch circuit, a slight change is necessary necessitating the addition of two movable contact segments |28A and- |28A, also fixed contact finger X. Inserted in the limit switch circuit is a magnetic contactor |52 which constitutes a switch whose contacts |52A are normally open but are closed when a current passes through its electro-magnet |58, one end of which is -connected to contact finger S2 and the other end to conductor |54 connecting to the electro-magno |38 of magnetic contactor |28.

Conductor |55 connects contacts |52A of the magnetic contactor |52 with conductor .|-l4. Solenoid |81 is connected to conductor |85 by conductor |58 and to contact linger X by conductor |51. Solenoid |88 is connected to conductor |41 by conductor |58 and by |58 to contacts |52A of magnetic contactor |52; In Figure 5, the mechanism is shown at rest in the position it occupies immediately after the coiling drum has been expanded with the friction clutch disconnected and the drum of the controller in its neutralposition. To collapsev the coiling drum rod must move forward or away from gear motor 84. Thread 18 being right hand, clockwise Arotation whenlooking from the 'front end of nut 1| will produce the desired movement in rod 85. Y f

The circuits of the control and operation of the other mechanism is as follows: the electric supply passes through main switch |8| to terminals |82 and |88 but no current isiiowing as there are no completed circuits. 'I'he controller drum is now ,rotated so the clockwise movable segments |24, |2|, |25, |28 and |28A come in contact with their respective contact fingers which completes the circuits land current flows from switch terminal |82 through conductor |84 to contactfinger L, segments I2 RI and through the starting resistance |21.

Continued rotation of the controller drum successivelyeliminates resistance |21 as the movable segments |2i, contact fingers R2, R8, R4 and R5 when full current passes through the circuit of conductor ,I 85 to magnet 81 of series brake releasing it, conductor |81, series field, conductor |88 to finger E, segment |25, finger F, conductor |48, armature, conductor |88, finger C, segment |28, finger B, conductor .I4 blow out coils, conductor |42 to contacts |28 to magnetic contactor |28 (normally closed), conductor |44 to terminal |88' of switch |3|, completing the circuit and rotating gear motor clockwise.

The circuit for valve solenoid |81 is from conductor |35 through conductor |58 through 'the solenoid |81, conductor |51 to linger X, segments .|28A to |28 to finger B connecting to thel main circuit through conductor |4| and energizing lsolenoid |81 which pulls the piston valve from the position shown at |86 to position shown at la in Figure 5A.

Fluid pressure from supply pipe |89 now flows through the right hand annular groove |881 in valve piston in position |86* to pressure port |92 to pipe |84 and cylinder |82 pushing piston |8| and rod |88 connected at |19 to bifurcated lever 18 until they arrive at position I18A and I 19A shown in dotted lines. 'This shifts the friction clutch cone member |12 in contactwith its cup member |18, imparting to it and nut |1| the same rotary motion as that produced by gearmotor which is clockwise as desired, lmovingrod'35 forward and collapsing the coiling drum, and at the same time moving pilot nut |85 with its attachments and floating contact |83 in the same longitudinal direction.

The opposite or stuillng box end of cylinder |32 exhausts through pipe |83 pressure port |9| left hand annular port |88 of. piston valve in position |88a to exhaust port |93 and to exhaust pipe |98. Clockwise rotation ofnut 1| and forward longitudinal movement of rod 35 and pilot nut |85 continue until floating contact |83 engages contact iinger 99 (as shown in Figure 4) Vof the limit switch circuit.t This circuit is as follows: from resistance |21 to conductor |41 to brush ||8, collector .ring |88, conductor |89, floating contact |83, finger 99,.conductor |89, ring 195, brush .|8I, conductor |5| to finger SI. segments |24, nger S2, to electromagnet |53 oi.' magnetic contactor |52 (normally open), conductor-|54 to electromagnet |98 of magnetic contactor |28, (normally closed), to conductor |58,

conductor |44, to switch terminal |33,'which rent energized the.electromaznet |53 of magnetic contactor |52, closing the contacts |52A (normally open) whichcompleted the circuit .for solenoid |88 beginning at conductor |41 throuch ance |21 as previously described. The flow of lcurrent for counterclockwise rotation is through the following segments, fingers, conductors; etc., forming the circuits from the main switch |3I. The gearmotor circuit starting at switch terminal |32 passes through |34, L, |2| R|, R2, R3, R4, R5, |35 magnet 81 of series brake releasing it, |31, series field, |88, E, |22 D, C, I39'armature, |48, A, |23, B, |4| blowout coils |42, |28, |29, |44, |33 switch terminal completing the circuit and producing counterclockwise rotation.

conductor |58 through solenoid |88 conductor |59 to contacts |52A which are now closed. conductor |55. conductor |54 completing the circuit through |38, |58. |44 to switch terminal |33. This energizes solenoid |88 and pulls valve niston from position |86a to position |85 when pressure from supply` pipe |89 flows through the left hand annular groove in valve piston .|86 to pressure port |9| through pipe |93 into cylinder |82 thus moving piston IBI, piston rod |88, lever connection |19 and lever |19 from position shown Til engage their respective contact fingers and con- I troller rotation is continued eliminating resist- The lc ircuit for solenoid |81 branches off of conductor |35 through |59, |81, |51, X, |23A, |23, B, |4|,'blow out coils, |42, |28, |29, |44, |33 switch terminal completing the circuit and operating solenoid |81, valve piston |88, cylinder |82, etc., exactly the sameas described for clockwise rotation.

The limit switch circuit starts from resistance |21 to |41, ||8, |88, |89, |83, 98, 96, |82, |48, S3,

terminal completing the limit switch circuit and closing the circuit for solenoid |88, through conductors |58, |88, |59, contacts |52A now closed,"

minal. This again operates solenoid |88, valve piston |88, cylinder |82 etc., exactly the same as described for clockwise rotation.

I have described and illustrated the simplest type of friction clutch, but the collapsing expanding mechanism and control as described is equally adaptable for use with any type of friction clutch, single or multiple disc, expanding or contracting band, gear or jaw clutches and any other type of rotary drive may be substituted for the gearmotor.

To simplify the descriptionl of this collapsingconvolutions of the coil.' and it is, therefore.-

belt-wrapper` necessary to provide the familiar to accomplish this result.

A belt-wrapper is an endless belt threaded'over stationary and hingedrollers carried in a 'frame mounted on a carriage movable transversely with relation to the ceiling drum axis. To form the first few coil convolutions on the empty coller drum the beit-Wrapper is advanced toward the drum, the belt rst engaging the drum then the hinged roller swings up so approximately three quarters of the drum is tightlyencircled by the belt which, due to the friction against the drum, is traveling at the same surface sneed.

The strip is led in through the one-quarter open space not encircled by the belt and fed between it and the rotating drum, which carries the leading end of the strip around the tightly encircled portion of the drum, and under the oncoming strip-thus forming the rst convolution.'

After several convolutions are formed the beltwrapper is withdrawn to make room for the.

progressively increasing coil. Patent 2,172.6167

clearly illustrates this belt-Wrapper device as now used which is a modification of Patent 1,230.750.

It is obvious that several operations are necessary to engage and'disengage the coiling drum and belt-wrapper. which is large and cumbersome occupying a large amount yof floor space, and it is also expensive. To eliminate the cost of this belt-wrapper with. its several necessary operations, also the floor obstruction which it cause/s, I vhave devised means consisting of electromagnets imbedded in the coiling drum segments and 'arranged to attach by magnetic attraction the leading end of the stripto the coiler drum, carrying it around the drum as it revolves, thus forming the first convolution of the coil.

The arrangement' of the electro-magnetic coils in the drum segments of the collapsing-expanding drum is shown most clearlyin Figures 2, 6, 'I andv 10. The segments, which are made of highly magnetizable material. are provided on their outer surface with an even number of longitudinal slots or grooves 200. with arcuate (or rectangular) ends 20| connecting each pair. The

must be protected from damage, and the groovesas well as the telescopic joint between the seg-- ments must be arched over to present a smooth vcontinuous cylindrical surface so the highly iinished strip surface is not damaged, which would impair its commercial value.

This is accomplished with arch plates 201 covering the grooves 200 also the joints between the segments. Arch plates 201 Figure 'I (removed in Figure are of non-magnetic springy material curved to conform with the cylindrical surface of the drum and having one edge rigidly attached to one of the segments and arching over one or more of the grooves 200 in which the electromagnetic coils 202 are embedded, thus protecting them. The arch plate 201 is of such width that it also spans the joint gaps between adjacent segments and is supported on the adjoining segment, but is not attached to it, having a beveled wedge-like edge 200 with a correlated bevel 200'* on the supporting segment.

The balance of the longitudinal grooves 200 are dovetailed at their outer edges and nonmagnetic arch strips 209 are forced longitudinally into these dovetails. The arcuate (or rectangular) end grooves 20|. are covered by non-magnetic plates or sleeve forming segments 2|0 at the front end and 2|| at .the rear end divided into thesame number of segments asthe drum and having a width great enough to cover the arcuate end grooves 20| and a part of its longitudinal connecting groove 200. The longitudinal edges of plates 2|0 and 2|| are beveled at 200 and they form a continuation of the unattached edge of arch plate 201.

I'he balance of sleeve forming segments 2|0 and 2|| are firmly attached to the drum segments I9, and the attached end is beveled the same as and forms a continuation of the bevel 200* on the drum segment. .The length of arch plate 201 and arch strip 20! will extend longitudinally from sleeves 2|0 to sleeves 2||. When the drumis collapsed the periphery shortens and the bevel 208 on the unattached end of the arch plates 201 and sleeve segments 2|0 and 2|| follows the correlated bevel 208'L on the drum segments i9, and bevel continuation on the attached ends of sleeve segments 2|0 and 2li and teleassasso scopes along the drum surfacareducing the drum diameter and permitting removal of the coil.

Figure 3 is provided consisting of an extending telescoping tubular conductor nger 2|: sliding a segment and they are so disposed in retainingv in a conductor sleeve 2|0 and both provided with shoulders 2|2 and 2li'I respectively to prevent dis-assembly.

Conductor sleeve 2|! is provided with an outer annular collar 2H" near its longitudinal center to position itself against insulating collared bush. ings 2li and 2li all of which are clamped and held rigidly inV retaining collar 22 by a nut 2|. threaded into collar 22. The rear end of sleeve 2|3 is internally threaded for conductor plug 2|1 which is also the seat for compression spring 2|0 which tends to extend finger 2 I 2 and always keep it in contact with terminal 205. Two of these extendible contacts are provided for each drum collar 22 that their longitudinal center line coincides with the center line of terminal contact 205, both of which are disposed at the same angle with relation to the coiling drum axis as the frusto-conical surfaces.

It is obvious that the short longitudinal movement required to collapse the drum segments Il will not change the center line coincidence of iinger 2|2 and terminal 205, and they will always be in contact. Attached to the rear surface of retaining collar 22 is a disk of insulating material 2|! (Figure 2) on which are mounted two annular collector rings 220 and 22|.

Conductor 222 connects collector ring 22| to conductor plug 2 1 of extendible contact connectlng with one of the terminals 205 of each drum segment. The other terminals of each drum segment connect in a similar manner (not shown) to collector ring 220. Attached to the drive frame 4 is a piece of insulating material 220 on which are mounted two brush holders 224 and 225 each provided with their tension springs and brushes contacting collector rings 220 and 22|.

The operation of the magnetic coiling drum is as follows: The drum is expanded, the electric supply passes through control switch 220 to its terminal 221, conductor 220 to brush holder 22| and through its brush to collector ring 22|, through conductor 222 to extendible contacts 2|1, 2|8, 2|3 and 2|2, to contact terminals 200 of each segment, through the electro-magnetic coils, and returning in a similar manner from each segment to collector ring 220brush and brush holder 225, conductor 230, to terminal 220 of control switch 226, completing the circuit and energizing the electro-magnetic coils, and converting the entire surface of the drum into a magnet to which the leading end of the strip will adhere and be carried around the drum as it without its ow line being diverted, and no manual manipulation is necessary, thus avoiding extended or telescoped convolutions which usually occur when theV leading end of the strip has to be strip.

entered manually in a gripper slot. It is obvious that this magnetic coiling drum eliminates the belt-wrapper.

-As the leadingend of the strip will be attached to the magnetic coiling drum equally well while it is rotating or when it is at rest it is obvious that it is not necessary to stop the mill or any other equipment preceding the magnetic coiling drum, as is the case when the drum is provided with a gripper to hold the leading end of the strip. `After the coil is completed the drum is collapsed as -previously described and the coil is removed by my magnetic coil stripper Patent #2,198,644, or any other means, after which the drum is expanded as previously described and is ready to form the next coil.

In the various figures illustrating the collapsible-expanding coiling drum, only three frustoconical surfaces are shown, but it is obvious that the number can be reduced to two for very short drums or increased to any desired number for long drums. It is also obvious that the angle of the truste-conical surfaces with relation to-their 1 axes can be increased or decreased as desired,

thus regulating the tension in and sizey of the rod 35 which imparts the longitudinal movement to the segments to produce thev collapse of also expansion of the drum.

It is also obvious that the face width of the frusto-conical surfaces can be increased or decreased as desired, which,` in conjunction with the number of these surfaces provided, will regulate and reduce to a safe margin the unit contact pressure between the drum core and the segments, which is impossible in drums using rollers, cams, etc.

While only the frusta-conical surfaceA for collapsing and expanding the segments has been described, it is obvious that the same results can be attained with frusto-pyramidal surfaces.

While the foregoing descriptions referred to magnetic collapsible expanding drums in connection with reducing mills, it is obvious that they are equally adaptable to any processing equip-- ment requiring .coiling of the strip, after the processing operation, and they are particularly adaptable for coiling narrow strips which have been slit from a wider strip by a rotary slitting shear in a slitting line. With the known method it is impossible to enter a number of strips in the drun gripper and at the same time keep them central, in line, and with the same tension in each With the known type of coiling drums coiling several narrow strips side by side, which were slit from a wider strip, it is necessary'to stop all operations and to manually enter each narrow strip in a gripper slot, which necessitates holding each and every one of the narrow strips in the gripper while the succeeding narrow stri-p is entered before the gripper can be closed to grip the strips, after which the slitting and coiling proceeds. This manual handling of the individual narrow strips diverts them from their path of flow between the slitting shear and coiling drum causcarried rby said shaft,

ing crooked entry of the strip in the gripper, and

some ofthe strips are entered deeper in the gripper than others causing different tension in the' various strips. All of these difficulties make it impossible to secure a uniform coil.

With the magnetic drums the narrow strips pass'side by side from the slitting shear in their regular path of flow onto the magnetic coiling drum, without any manual handling or manipulation, and adhere to it and are carried around of the coil without'interruption of operations,l

and a perfect coil is formed from each strip.

If for any' reason the narrow strips are diverted from their path they can be quickly aligned by stopping the slitting shear and preceding equipment as soon as any of the leading ends of the strips adhere to the magnetic drum. and continuing rotation of the drum. The strips being held stationary by the preceding equipment will cause the strip to slip on the drum while itis rotating, this producing equal tension in all strips. If they are outof line there will be more tension in one side of the strip than in the other and as the slippage of the strip on the rotating drum equalizes the tension in both sides of the strip,

- then pushed on the drum and the segments expanded holding the'coil firmly when the uncoiling can proceed.

It is obvious that the objects of this invention as previously stated will be accomplished by the equipment described.

' Certain preferred features of the invention have been herein illustrated and described, it will be understood, however', that changes in the construction and operation of the parts may be made without departing either from the true spirit or scope of the invention. These variations are to be determined from the apperi'ded claims.

What I claim is: Y 1.4 In a sheet rolling mill or other processing equipment, a sheet w' ding means comprising a rotatable overhung shaft and a collapsible drum rality of arcuate members loosely carried by said shaft, means at each end of said mem-bers holding said members on said shaft'for movement relative to said shaft, correlatedI means-carried by said shaft, said members and said holding means for effecting radial movement-of said members simultaneous with longitudinal movement. means at one end ofsaid shaft engaging the adjacent ends of said members for shifting said 'members longitudinally of said shaft, operating means for said shifting mans at the other end of said shaft, and a connecting means extending axially through said shaft connecting said operating means with said shifting means.

2. In a sheet rolling mill or other processing equipment, a sheet winding means including a rotatable sh'aft, means tionrthe extended portion of said shaft having a plurality of collared frusto-conicalsurtaces, a plurality of transversely arcuate drum forming segments formed with concave frusto-conical surfaces on the interior thereof slidably engaging said collared surf-aces, a disc fonned with tapering annular shapedslots fixed to said shaft near the extended end thereof, transversely arcuate projections carried by said segments slidably engaging in said slots, an outwardly inclined extension carried by the opposite end of each segment, a collar fixed to said shaft having an annular reess in one face .thereof in which said extensions said drum including a plurotatably supporting said' shaft with an end thereof in an extended posimental members, a ring Sldably extend. a ring xed to said collar having a cylindrical and an internal frusto-conical bore in which said inclined extensions slidingly engage, said ring and disc jointly holding said segments on said shaft and radially contracting said segments upon endwise movement of said segments in one direction with relation to said shaft and means engaging through said shaft connected with said segments for moving said segments endwise.

3. In a sheet rolling mill or other processing equipment -a sheet winding means comprising a rotatable winding shaft, means supporting said shaft for rotation, said supporting means engaging said shaft adjacent one end and at an intermediate point to-thereby dispose the opposite end of said shaft in projecting relation from said supporting means, said projecting portion of said shaft having a plurality of collared frusto-conical surfaces, a cylindrical drum including a plurality of transversely arcuate drum forming segments having interior complementary concave frusta-conical surfaces engageable with said collared surfaces for radially expanding said segments upon endwise movement in one direction thereof with relation to said shaft, means holding said segments on said shaft against rotary movement relative to said shaft while permitting v endwise movement thereof, an axially shiftable disc member slidingly carried by said shaft and engaging the adjacent ends of the segments for effecting endwise both directions relative to said shaft, and operating means fixed to said discmember and extending axially through said shaft.

4. In a sheet rolling mill or other processing equipment, a sheet winding means comprising a rotatable winding shaft, means supporting said shaft for rotation, said supporting means engaging said shaft adjacent'one end and at an intermediate point to thereby dispose the opposite end of said shaft in projecting relation from said supporting means, a collapsible cylindrical drum on the projecting portion of cluding a plurality of segmental members, complementary means carried partly by said shaft and partly by said segmental members for effecting radial movement simultaneous with longitudinal shifting of said segmental members. a disc disposed near the projecting end of said shaft and said segmental members, a collar fixed to 1, acent said shaf adj carried by said collar. Said disc, collar and ring effecting radial contracting of said segmental members on endwise movement thereof in one direction with relation to said shaft, an axially shiftable disc on the projecting end of said shaft engaging the adjacent ends of said segmental members for communicating endwise movement in both directions thereto, said disc including means for limiting expansion of and maintaining concentricity of the adjacent ends of the segmental members, the expansion of the opposite yends of said segments being limited by the cylindrical bore of said ring, said ring and collar also'maintaining said opposite ends of said segmental members concentric to said shaft, op-

i erating means for producing endwise movement of said segmental members engaging said shatfzt at the supported end thereof, and a rod connec ing said operating means to said axially shiftable disc, said connecting rod extending axially through said shaft.

5. In a sheet rolling millor other processing equipment, a sheet winding means including a rosaid shaft, said drum inmovement of said segments in tion, a collapsible drum on the extended end of said shaft, said drum including a plurality of arcuate segments, said shaft and segments having complementary inclined surfaces, said surfaces being angularly inclined toward the shaft axis to effect radial expansion and contraction of the segments simultaneous with longitudinal movement thereof with relation to said shaft, shifting means carried byI said shaft engaging adjacent ends of said segments for effecting longitudinal movement of said segmentspsaid segments 'being provided on both longitudinal edges thereof with interengaging means providing for reduced periphery whensaid segments are contracted, a springy arcuate plate attached to each segment overlapping said interengaging means whereby to form asmooth exterior surface when expanded, each plate slidingly engaging over an adjoining segment, operating means mounted on the supported end of said shaft for producing longitudinal movement of segments, rod connecting means for communicating the longitudinal movement of said operating means to said. segment shifting means, said connecting means extending axially through said shaft.

6. In a sheet rolling mill or other processing equipment, a. sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mounting said segments for combined radial and longitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod. a rod shifting means rotatably carried by said` shaft and threaded onto said rod, and means for rotating said rod shifting means to thereby shift said segments from a collapsed to an expanded position.

'7. In a sheet rolling mill or other processing equipment, a sheet winding means comprising a threaded onto said rod, said rod shifting means the opposite end of said segincluding a clutch element threaded onto said rod, a second clutch` element correlated lwith said first clutch element, and means for` shifting one of said clutch elements relative to the other element.

8. In a sheet rolling mill or other processing equipment, a sheet ,winding means' comprising a sheet winding shaft, a plurality ofdrum forming segments on said shaft. means movably mounting said segments for combined radial and longitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a rod shifting means rotatably carried by said shaft and threaded onto said rod, and means for rotating said rod shifting means including complementary clutch elements and operating means connected with said elements.

9. In a sheet rolling mill or other processing equipment, a sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mounting said segments for combined radialV and longitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a rod shifting means rotatably carried by said shaft and threaded yonto said rod, means for rotating said rod shifting means including driving means, electromagnetic clutching means, and openting means connected with said' clutching means for coupling said driving means with said rod shifting means. y

10. In a lsheet rolling mill or other processing equipment, a sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mounting said segments for combined radial and 1ongitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a rod shifting 'means rotatably carried by said shaft and` threaded onto said rod, reversible means for rotating said rod shifting means including electromagnetic clutching means and reversible driving means connected with said clutching means.

11. In a sheet rolling mill or other processingV attached to one end of said rod, a rod shifting means rotatably carried by said shaft and threaded ontosaid rod, a reversible electric motor for rotating said rod shifting means, electromagnetic clutching means for coupling said motor with said rod shifting means, and means operatively connected with said Amotor and said clutching means foi` limiting the shifting of said rod.

` 12. In a sheet rolling mill or other processing equipment, a sheet winding shaft, a p1ura1ity of drum forming segments on said shaft, means movably mounting said segments for combined radial and longitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a

gitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a` rod shifting means rotatably carried 'by said shaft and threaded onto said rod, means for rotating said rod shifting means including a clutch element carried by said rod shifting means, a second clutch element, fluid actwted means connected with said second clutch element for shifting said second element relative to said first element, and electro-magnetic controlling means for said fluid actuated means.

14. In a sheet rolling mill or other processing equipment, a sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mounting said segments for combined radial and longitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member 15. In a sheet rollingmill or other processing I equipment, a sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mountingl said segments for combined vradial and longitudinal movement, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a rod shifting means rotatably carried by said shaft and threaded onto said rod, and means for rotating said shifting member, said rod and shifting member being so disposed relative to said shaft that all stresses tending to collapse o'r expand said segments are absorbed longitudinally by said shaft with said segments and rod shifting means moving as a unit. A

16. In a sheet rolling mill or other processing` equipment, a sh'eetwinding means .comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mounting said segments for combined radial and -longitudinal movement relative to said shaft, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a rod shifting means rotatably carried by said shaft and threaded onto said rod, electric operating means Afor rotating said rod shifting means independently of the rotation of said shaft to thereby shift said segments from a collapsed to .an expanded position, coacting means carried by attached to one end of said rod, a rod shifting 1g said rod and said shaft for holding said rod against rotary movement relative to said shaft while permitting longitudinal movement 'of said rod, an electric control means for said operating means, and circuit making and breaking means connected with said control means carried by said rod shifting means and movable lengthwise of said shifting means for limiting the endwise movement of said rod.

17. In a sheet rolling .mill or other processing equipment, a sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means, movably mounting said segments for combined radial and longitudinal movement relative to said shaft, a rod -loosely mounted axially in said shaft, a segment shifting member attached to one end'of said rod, a rod shifting means rotatably carried by said shaft and threaded Vonto said rod, electric operating means for rotating said rod shifting means independently of the rotation of said shaft 4to thereby shift said segments from a collapsed to an expanded position, coacting means carried by`V said rod and said shaft for holding said rod against rotary movement relative to said shaft while permitting longitudinal movement of said rod, an electric control means for said operating means, said operating means including electro-magnetic clutching means connected with said control means and said rod shifting means, said control means including circuit making andl breaking means operatively connected with said rod shifting means for limiting the endwise movement of said rod. c

. 18. In a sheet rolling mill or other processingequipment, a sheet winding means comprising a sheet winding shaft, a plurality of drum forming segments on said shaft, means movably mounting said segments for combined radial and longitudinal movement relative to said shaft, a rod loosely mounted axially in said shaft, a segment shifting member attached to one end of said rod, a rodshifting means rotatably carried -rby said shaft and threaded onto said rod, electric operating means for rotating said rod shifting means independently of the rotation of said shaft to thereby shift said segments from a collapsed to an expanded position, coact'ng means carried by said rod and said shaft for holding said rod against rotary movement relative to said shaft while permitting longitudinal movement of said rod, an electric control means for said operating means, said operating means including a power member, electro-magnetic clutching means connected with said control means for coupling said power member with said rod shifting means, said control means including a, circuit making and breaking means, and means carried partly by said shaft and partly bysaid rod shifting means for moving said circuit making and` breaking means lengthwise of said shaft upon rotation of said shifting means relative to said shaft'.

19. In a sheet rolling mill or other processing equipment, a sheet winding means comprising a rotatable overhung shaft and a collapsible drum carried by said shaft, said drum including a plurality of arcuate members loosely carried by said shaft, means at each end of said members holding said members on said shaft for movement relative to said shaft, correlated means carried by said shaft,said members and said holding means for effecting radial movement of said members simultaneous with longitudinal movement, means at one end of said shaft engaging the adjacent ends of said members for shifting said'V members longitudinally of said shaft, a cylinder attached to the opposite end of said shaft, a piston slidable in said cylinder, means connecting said piston to said shifting means, and pressure means connected to said cylinder for effecting movement of said piston in a selected direction.

20. In a sheet rolling mill or other processing equipment, a sheet winding means including a rotatable overhung sheet winding shaft, combined radially and longitudinally shiitable arcuate drum forming members carried by said shaft, correlated means carried partly by said shaft and partly by said members for radially shifting said members upon longitudinal movement thereof, means carried by each member partly overlapping an adjacent member whereby to form a smooth exterior surface when said members are in extended position, a segment shifting means slidable axially of said shaft and extending therethrough, and hydraulic means operatively"connected with said shifting means for longitudinally shifting said members.

21. In a sheet rolling mill, a sheet winding means including a rotatable shaft for winding the sheet, combined radially and longitudinally shiftable segments carried 4by said shaft, means slidable through said shaft and coupled with an end of each segment for shifting said segments longitudinally of said shalt, correlated means carried partly by said segments and partly by said shaft for shifting said segments radially simultaneously with the longitudinal shifting ther eof, each segment having a coil receiving channel therein, and electro-magnetic coils seated in said 4channels to thereby magnetize said segments and effect adherence of the leading end of the sheet thereto to thereby wind the sheet about said segments upon rotation of said shaft.

22. In a sheet rolling mill, a sheet winding means comprising a rotatable winding shaft, means supporting said shaft for rotation, said supporting means engaging said shaft adjacent one end and at an intermediate peint to thereby dispose the opposite end of said shaft in projecting relation from said supporting means, a co1- lar fixed to said shaft on the projecting portion thereof adjacent said supporting means, a collapsible cylindrical electro-magnetic winding drum mounted on saidprojecting shaft portion, means releasably holdingsaid drum en said shaft, contact members carried by the inner end of said drum, spring-pressed contact members carried by said collar engageable with said first contact members, and means connecting said second contact members to a source of yelectric current supply.

23. In a sheet rolling milll a sheet winding -means comprising a rotatable winding shaft,

means supporting said shaft for rotation, said supporting means engaging said shaft adjacent one end and at an intermediate point to thereby dispose the opposite end of said shaft in projecting relation from said supporting means, a collar fixed to said shaft on the projecting portion thereof adjacent said supporting means, a collapsible cylindrical electro-magnetic winding drum mounted on said projecting'shaft portion, means releasably holding said drum on said shaft, contact members carried by the inner end of said drum, spring-pressed contact members carried by said cellar engageable with said first contact members, a pair of spaced apart commutator rings carried by said collar, a pair of brushes engageable with said rings, and means supporting saidv brushes in contacting relation to said rings.

24. An electro-magnetic winding drum for use on a sheet winding shaft comprising a collapsible cylindrical metallic body formed in the outer surface thereof with a plurality of longitudinal coil receiving channels, electro-magnetic coils in said channels, means closing said channels, terminals counter-sunk in an end of said body and connected to the ends of said coils, a vretaining ring at one end of said body overlapping a portion of the latter, and spring pressed contacts carried by said ring engageable with said terminals.

25. In a sheet rolling mill or other processing equipment, a sheet winding means including a rotatable shaft, a plurality of elongated segments, means mounting said segments on said shaft for combined endwise and radial movement relative to said shaft, an arcuate inwardly projecting flange carried by one end of each segment, a segment shifting rod slidable through said shaft. means fixed relative to an end of said rod and engageable on opposite sides of said flanges whereby said segments will be shifted endwise with endwise movement of said rod, means fixed relative to said shaft and engageable with said segments adjacent the opposite ends thereof for slidably holding said segments in their radially land longitudinally adjusted positions, and means for shifting said rod lengthwise of said shaft.

26. In a sheet rolling mill or other processing equipment, a sheet winding means including a rotatable shaft, a plurality of elongated .segments, means mounting said segments on said shaft for combined endwise and radial movement relative to said shaft, an arcuate inwardly projecting flange carried by one end of each segment, a segment shifting rod slidable through said shaft, means fixed relative to an end of said rod and engageable ,on opposite sides of said flanges whereby 'said segments will be shifted endwise with endwise movement of said rod, a pair of oppositely extending slide members carried by each segment onev adjacent each end thereof, guide means for said slide members xed to said shaft, and means for shifting said rod lengthwise of said shift. A

27. In a sheet rolling mill or other processing equipment, a sheet winding means including a rotatable shaft, a plurality of elongated segments, means mounting said segments on said shaft for combined endwise and radial movement .relaive to said shaft, an arcuate inwardly. projecting flange carried by one endof each segment, a segment shifting rod slidable through said shaft, means xed relative to an end of said rod and engageable on opposite sides of said flanges whereby said segments will be shifted endwise with endwise movement `of said rod, a pair of j oppositely extending slide members carried by each segment one adjacent each endy thereof, annular arcuately slotted collars fixed to said shaft and constituting guide means for said slide members, and means for shifting saidv rod lengthwise of saidshaft.`

28. In a sheet rolling mill or other processing equipment, a sheet winding means including a rotatable shaft, a plurality of elongated transversely arcuate segments about said shaft, means mounting said segments for combined-endwise and lradial movement relative to said shaft, an

- arcuate inwardly projecting flange carried by one end of each segment, obtusely disposed oppositely extending slide means fixed to the opposite ends of each segment, guide means for said slide means fixed to said shaft, a segment shifting rod slidable axially through said shaft, a reduced axial stub carried by said shaft, an annular plate fixed to said rod, an annular flange carried by said plate slidably engaging said stub, a second flange carried by said plate engageable about the adjacent ends of saidl segments and constituting a limiting means for limiting the expansion of said segments, a flanged ring fixed to said plate and engageable against the inner sides of said arcuate segment fianges whereby axial movement i extending slide means fixed to the opposite ends of each segment, guide means for said slide means fixed to said shaft, a segment shifting rod slidable axially through said shaft, a reduced axial stub carried by said shaft, an annular plate fixed to said rod, an annular ange carried by said plate A slidably engaging said stub, a second fiange carried by said plate engageable about the adjacent ends of saidsegments and constituting a limiting means for limiting the expansion of said segments, a anged ring fixed to said plate and enmeans holding said rod against rotary movement relative to said shaft.

30. In a sheet rolling mill, a sheet winding means including a rotatable shaftfor winding the sheet, radially and longitudinally shiftable segments carried by said shaft, means for .simul- `means including a rotatable shaft for winding the sheet, radially and longitudinally shiftable segments carried by said shaft, correlated means carried by said shaft and said segments for radially shifting said segments upon longitudinal movement thereof, means extending through said shaft and engaging an end of each segment for shifting the latterflongitudinally, a retaining ring fixed to said shaft and overlapping the opposite ends of said segments, means for magnetizing said segments, electric conducting means for energizing said magnetic means terminating in fixed terminals insaid opposite ends of segments, springpressed contact means in saidring engageable with and maintaining contact against said fixed terminals in said opposite ends when said segl ments are shifted longitudinally and radially.

- 32. In a sheet rolling mill, a sheet winding means including a rotatable shaft for winding the sheet, drum forming segments about said shaft, correlated means carried by said shaft and said segments for radially shifting said segments upon longitudinal movement of the latter, electromagnetic means carried by said segmentsfor releasably holding a ferrous sheet thereon, means extending through said shaft connected to the ends of said segments at vone end of the drum for shifting said segments longitudinally of said shaft independent of the rotation of said shaft, longi- 'I tudinal extensions at the opposite ends of each segment, and means fixed relative to said shaft engaging said extensions for holding said segments about said shaft. 1

33. In a sheet rolling mill, a sheet winding means including a lrotatable supporting shaft, a collapsible drum carried by said shaft, said drum including radially and longitudinally shiftable segments, correlated means carried by said shaft and saidsegments for shifting said segments radially upon longitudinal shifting thereof, a rod extending axially through said shaft, correlated means carried by one end of said rod and said segments for shifting said segments longitudinally with longitudinal movement of said rod, a rod operator rotatably carried by 'said shaft, correlated means carried by said rod and saidv operator for shifting said rod longitudinally of said shaft, said latter means being so constructed and arranged as to lock said rod in adjusted position, locking of said rod also locking said segments in extended or contracted position, and means for rotatingsaid operator,

gageable against the inner sides of said arcuate segment flanges whereby axial movement of said 34. In a sheet rolling mill, a sheet winding means including a rotatable supporting shaft, a collapsibledrum carried by said shaft, a drum collapsing and extending rod extending axiallyv through said shaft, correlated means carried by oneend of said rod and said drum for positively moving said drum to extended or collapsed position upon endwise movement of said rod, meansl holdinglsaid 'rod against rotary movement relative to said shaft, threads carried by the opposite end of said rod, a rod operator threadably engaging said threads, means rotatably mounting said operator on said shaft, and means for rotating said operator independently of said shaft to thereby move said rod endwise in a selected direction.

35, In a sheet rolling mill, a sheet winding means including a rotatable supporting shaft formed with spaced inclined surfaces, a collapsiend thereof.

ble drum formed of a plurality of segments carried by said shaft, said segments having inclined surfaces contacting with said first surfaces, a drum collapsing and extending rod disposed `axially of said shaft, means slidably holding said rod against rotary movement relative to said shaft, means fixed to said rod engaging the adjacent ends of said segments for positively shifting said segments endwise upon endwise movement of said rod in a selected direction, and means for moving said rod endwise to ,thereby extend or retract said drum.

36. In a sheet rolling mill ornother processing equipment, a sheet winding means including a rotatable overhung shaft for winding the sheet, combined radially and longitudinally shiftable segments carried by said shaft forming a cylin- 3'?` In a sheet rolling mill, a sheet winding means including a rotatable supporting shaft, a collapsible drum carried by said shaft, said drum including radially and longitudinally shiftable segments, said shaft and said segments having cooperating surfaces so constructed and arranged that endwise movement of said segments will provide simultaneous radial movement of the latter',

correlated means carried by said shaft and saidv segments for shifting said segments radially upon longitudinal shifting thereof, a rod extending axially through said shaft, correlated means carried 'by one end of said rod and said segments for shifting said segments longitudinally with longitudinal movement of said rod, a rod operator rotatably carried by said shaft and correlated means carried by said rod and said operator for shifting said rod longitudinally of said shaft, said operator being so constructed and arranged as to lock said rod in adjusted position, locking of said rod also locking said segments in extended or contracted position.

FRANK L. WETTENGEL.

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