US2484632A - Beading machine - Google Patents

Description

J. 1.-.- MARSH BEADING MACHINE Oct. 11, 1949.

5 Sheets-Sheet 1 Filed March 29, 1946 NWNK 1 @WN QNN 5m.

ANN NWN oct. 11, 1949. J. L. MARSH 2,484,632

BEADING MACHINE Filed March 29, 1946 5 Sheets-Sheet 2 11 m Q Q D U1 Q 13 kgv) QQ Svc@ ffy Z J. L. MARSH BEADING MACHINE 5 SheetsQSheet 3 Filed March 29, 1946 INVENTo f( Oct. 1l, 1949. J. l.. MARSH 2,485,632

BEADING MACHINE Filed March 29, 1946 5 Sheets-Sheet 4 75 7G. 741l f 73 7 \"/A 75 74 Mm l 7542 72 if 7 65 795 753 75) '75S 9" @mi /l-g nl 759 757 752 750 759 760 I N VEN TOR.

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BY wor/?. /Z WM/V Oct. 11, 1949. -`1. l.. MARSH 2,484,632

BEADING MACHINE Filed March 29, 1946 5 Sheets-Sheet, 5

6.997 90 M 73 65 68 95 36 760 7202 l 941 37 7.55 +750 55 770 .90 B 759 4 67 .97 2@ 63 g2' 'l-'fl 700: 75 1 ll l 60 770 "M um@ 1 g3' 73 r :l 1 6 l 'H j# 50 52 57 777 l 72a 57 4Z/Z9. 76

Patented Oct. 11, T1949 UNITED STATES ATENT GFFICE Application March 29, 1946,

15 Claims.

This invention relates to improvements in the forming of beads on tubular members, and particularly to the forming of beads which extend outwardly from the exterior surface of the tubular member.

One of the objects of this invention is to provide a beading machine of improved construction which is capable of operating efliciently and rapidly to form a bead on tubular members. Another object is to provide a machine of this kind with driving means of improved construction for moving a beading roll into engagement with the inner surface of a tubular member so that the axis of the beading roll will move in substantially circular paths of gradually increasing diameters. A further object is to provide driving means of this type which includes a cone part and a part having a conical recess, one of these parts being mounted on an eccentric on the drive shaft and the Aother part being mounted on a member which supports the beading roll, one of the parts being movable axially toward the other part to vary the diameter of the circular path in which the beading roll travels. Another object of this invention is to provide a machine of this type in which the rotary driving member has a cone eccentrically mounted thereon which is movable into and out of a conical recess or hole formed in the member which supports a beading tool, so that the axis of this tool is moved in substantially circular paths, and in which the eccentricity may be varied by lengthwise movement of the driving member.

It is also an object of this invention to provide a machine with means of improved construction for readily adapting the machine to operate on tubular members of various sizes. Another object of this invention is to provide means of improved construction for clamping a tube in fixed relation to the machine while the beading operation takes place. A further object is to provide a mounting for the dies and the tube clamping means by means of which one set of dies and clamping means can be readily removed and replaced by L other dies and clamping means to operate on tubes of different sizes. Another object is to provide a supporting member of improved construction for the beading tool. A further object of the invention is to provide a clamping member for a tube which also forms a part of the die into which the bead of the tube is pressed.

Other objects and advantages of this invention will appear from the following description and claims.

Serial No. 658,340

In the accompanying drawings:

Fig. 1 is a top plan embodying this invention, the motor for driving the machine being shown as partly broken away.

Fig. 2 is a central sectional elevation thereof, on line 2-2, Fig. l.

Fig. 3 is an end elevation thereof, showing the tube receiving end of the machine.

Fig. 4. is a transverse sectional elevation thereof, on line 4--4, Fig. 1,

Fig. 5 is a sectional 5-5, Fig. 2.

Fig. 6 is an elevation, partly in section, taken on line -5, Fig. 2.

Figs. 7, 8, 9 and l0 are sectional elevations, taken respectively on lines 1-1, 3-8, 9--9 and ISI-40, of Fig. 2.

Fig. 11 is a development of a portion of the surface of a cylindrical part of the machine, partly in section, on line ll--l l, Fig. 10.

Fig. 12 is a similar development, taken alongv the line l2|2, Fig. 10.

Fig. 13 is a fragmentary longitudinal sectional elevation, taken on line l3--l 3, Fig. 10.

Fig. 14 is a fragmentary longitudinal sectional elevation similar to Fig. 2, on a larger scale, showing the parts in position to receive a tube to be beaded.

Fig. 15 is a view similar to Fig. 10, showing the parts in the positions which they occupy during the beading operation.

Fig. 16 is a `fragmentary longitudinal central sectional elevation similar to Fig. 13, showing the parts in position to permit removal of the beaded tube on a machine.

The construction shown in the accompanying drawings represents one embodiment of this invention, and it will be understood that it is not intended to limit this invention to the particular construction illustrated.

In the particular machine shown, 2li represents a base or frame of the machine ywhich may be mounted on a bench or other suitable support. 2l represents the drive shaft of the machine which is suitably journalled at one end on a bearing pedestal or support 22 suitably secured on the frame or base 20, and the inter-mediate portion of the shaft extends through a horizontal cylindrical aperture 24 formed in an upward extension 25 of the base. The drive shaft is mounted for rotation and also limited movement lengthwise of its axis. Any suitable means may be employed for imparting rotary motion to this shaft, such for example as a pulley 21 which is .connected to theshaft -by means of a spline 28, thus permitelevation thereof, on line view of a beading machine ting lengthwise movement of the shaft relatively to the pulley. The pulley, in the particular construction illustrated, is driven by means of the belt 29 from an electric motor 30. This motor, in the particular construction illustrated, see parmotor applies the necessary tension to the belt 29. The pulley i2 1` may beheld against movement lengthwisefof the axis ofrotation inany suitable manner, for example, by means of the bearing pedestal 22 and a bifurcated abutment memberA 32, the lower end of which is secured to the-base.

21 and which straddles the shaft 2|. Any other means for driving the shaft 2| may., however, be provided.

Lengthwise movement of the drive shaft may be provided in any suitable manner, and in thereon*- struction shown, an intermediate part of the shaft is journalled- 'by means of vbearings :35 mounted on.af.-slide member 36,- that. shown besubstantial-1ycyl-i-ndrioal` lin form and .mounted tofslide. vlengthwise. in the, vcylindrical aperture 24.of.-the;framefon 'housing-.20. The bearings 35 in the construction shown bearingsfand the inner .races of the same are casing; the. inner race.. of' the adjacent vball bear-u ing 35. In a similar manner, the the other bearing 4 heldin .place by means of a hub portion or eccentric 38 which is` secured t0:th'e gsh`aft.fby.means oiset screws 35?. Consequently, theshaft Zrl-eisf reelyirotatable relatively to the slide member, butis. held against mot/ement. lengthwise thereof..

'Lengthw'ifseV movement'may be vimparted to` the Y slide member 36. suitable-mr.- desired-.man-

Een.'

ticularly Figs. 1 and 4, the slide member... 3b. is

, provided; atene,rside'thereofgwith .rack teeth Atit, with which fa* pinionMJ meshes. securedutothe/lower- Aend.;ervan upright shaft .This ,pinion is andy an.: arm 'utilis securedto the :upper fend.l fof thisgshat, thezsha-ft being. journalled. in a. vver-- tical aperture formed in an upwardly and laterally extendingfpart, 44'--'of fthe-.frameaorbase 29 `of the'fnrachine.. Consequently; .it will be obvious.

that as the arm 43 is swurrgnt'o:turnithe shaft `AZfiIzmd the: .pinion 4 I',

which .is secured vthereto by, meansvo'f. apin 5455, :movement'rwill be imparted through the-:- rack.. teethoto-ithe .Islide member to move the driving shaft 2| in thefdizrection of itsfaxisi. othersuitablefornesired means maybe:emplcyedzfonimpartingilengthwisemovement tol-therdrive'=shaftl -2f'|. .Ifsdesired-,- a suitable stopomember "f4.7 f may :be mounted. on the upper face of the part '44 of the-ibasemember 2B, rto l-imitathe :swinging movement 'of ith'elarm-"SL The stop.' member la' threadedihole .in which Va `stop screw may Ibe adjustablyfsecured in .such position tfatthe :endy ofthe stopfscrew may engage the lever: 43.to limit the sw'ingingfthereof.

In :order to' 'formsa `bea'clin a tubular member., avgradual rolling 'outset' the bead. is preferable ther-internal diameter-offltlneixtube;` This nulli-is, consequently, driven byrthereccentric '38.1 ofy the drivey shaft vso that .Sitsfaxisfk :travels 'in Vsubstantially circular vpathsf lwhile. therfrollf. isi in .contact are in ther-crm of: ball nner .race .or

able in circular paths of varying diameters, and

thissupporting member is driven from the eccentric 38. Since the eccentric moves in a circular pathf'offxeddiameter about the axis of the drive shaft, .means-areprovided for producing a variable eccentric motion of translation of the supporting member 58 from the xed eccentric motion of the eccentric In the construction illustrated Vvby way-of example, this...is.accom plished'iby using a .substantially :conical rsurtace: or aisuntace inclined 'to the Aaxis of rotation of.

the drive straft', through which :rotation is.- transmitted from the drive shaft to the .supporting member `58, .in such-mannentha-t .the-.inclinedcr conical. surface during longitudinal. movement. of 'the drive shaftv will. result in .changes iii-,diameter ofv the paths of*movementfptlthesupporte ing member. vSuchfc'onical or inclined surface.. the .drive or on .the

may beearrangedi onv supportingmember.; oronfiboth.

In lthe particular embodiment. of this .invention s ilustrated in thedrawings, "the-eccentric'rt?.I ofl the -drive shaftv is constructed to imparti motion'. a cone 56, .and torthisfpur-v pose, the cone may be mounted `.on-or' formed in Aacircular pathto integral' Awith a rvcone Vsupporting .member .5t which lis :substantial/ly vot cup-shape, navi-ng. a .cylindrical part 52 are interposed betweenthe .eccentric -tf and the cone-supporting. membent ssotnat thel cone supporting V.member-'51 is `free to .rotate rela-` tively'ftothe eccentric, .butxduring such rotation., theV eccentric WiH. .producea m'ovenfaentof` vthe* cone supporting .memberV and. the.. cone .53 in'. a circular path 'of flxed'fdiameter. It. will beznoted in Fig. 2,that theicone..is/substantiallyconcentric; with the conev supporting member 51, so that With eachsrevolution ofy 50 will travel in Aa, circl'eabout thezaxis of the. driving shaft 2| and becausefoffthe bearings v5S, the cone` ymay rotate about i-ts l'own .axis with path about the axis of the. driveshaft.

lllhe cone '52) extends into. .a conical. hole .56" 57 whichis. journalled to rotate freely 'in the supporting member 58 on which the circular beading tool '66 'is mounted.

The supporting member 518 is` provided, at one guided in 'a recess rlikt formed in anl upright standard-trsuitably'mounted on theframe '2U of the machine. The supporting member 58tan'd which extends about the vcoccio-- tric v38. Preferably ballorsrollingbearingsu vthe l :shaft 2l, the cone the recess 64 in which it is mounted may be of circular shape, the recess being of considerably larger diameter than the supporting member, so that the latter may move in the recess in circles of varying diameters, but, as hereinafter described, the supporting member is held against movement in the direction of its axis.

This standard 65, in the particular construction shown, is welded or otherwise secured to a base member 63, which in turn is suitably secured to the frame 29 of the machine, and suitable braces 63a and 63h are provided for holding this standard securely and accurately in upright position. The holding member 58 may be mounted in the recess 64 in any desired manner for movement in a vertical plane, and in the construction shown, the holding member is confined in the recess by a plate or cover member 69 suitably secured to the standard 65, for example, by means of bolts or screws (not shown) A pair of bearing plates 61 and @8 of suitable hearing material and of circular form are arranged at opposite sides of the supporting member '58, and these bearing plates may be provided vvith holes to facilitate lubrication. The supporting member 53 for the beading roll 60 is, consequently, movable in the recess 64 in accordance with the motion imparted thereto by the cone 59. The beading member may be lubricated through a lubricating aperture closed by a plug 1S. Any other suitable means for mounting this supporting member for movement in circles of various diameters in a vertical plane may be provided.

Suitable means are also provided for yieldingly holding the beading roller supporting member in substantially central position within the recess ll, and in the construction shown for this purpose, a plurality of spring pressed fingers 12 are provided which are guided for movement in a direction substantially radially by means of radially extending holes in the standard 65, see particularly Fig. 1. The inner ends of these plugs or fingers engage the periphery of the holder 58 and the outer ends of the fingers have shouldered portions 13 which are formed to bear against corresponding shoulders formed-in the holes or apertures in the standard for the purpose of limiting the extent to which these fingers may move inwardly toward the axis of the drive shaft 2l. Springs 1A are arranged in these holes, and are conned in place therein by means of a pair of threaded plugs 15 engaging in threads formed in the outer portions of the holes in the standard 65. The inner ends of these springs bear against the fingers 12 to urge them toward the supporting member 58. One of these plugs 15 acts to lock the other plug in place, and the plugs are adjustable to vary the tension of the springs 13. Consequently, when the cone 50 is withdrawn from engagement with the Walls of the corresponding conical hole or recess 56 formed in the plug member 51, the spring actuated fingers 12 will urge the supporting member into a central position, substantially concentric with the drive shaft 2l. Any other means for yieldingly centering the supporting member for the beading roll 69 may be provided.

The beading tool or roll '59 may be mounted on its supporting member in any suitable or de' sired manner, and in the construction illustrated, this supporting member has another annular hub or cylindrical extension 18 which is preferably formed integral therewith, and Within which is arranged a bearing bushing 19, see par- 6 ticularly Figs. 2 and 14. The beading roll 69 is preferably rigidly mounted on a stub axle or shaft 89. This stub axle extends into the bearing bushing 19 and is rotatable therein, or if desired, the stub axle may be held against rotation relatively to the hub 18, since any rotation of the beading roll 69 relatively to the tube will in that case produce corresponding rotation of the supporting member 58. The beading roll also has a cylindrical portion 8| formed concentric therewith and which spaces the beading roll from a stop plate or disk 82 against which a tube 83 to be beaded may abut. The cylindrical part 8l serves to prevent the end of the tube beyond which the bead 84 extends from becoming deformed during the beading operation, or, if deformation results, to roll this end of the tube back to its former position. Beading rolls or tools of other shapes and sizes may, of course, be employed, and if a beading roll of another size or shape is to be used, it is merely necessary to pull the beading roll to the right in Figs. 14 and 15, so that the stub shaft 89 thereof is removed from its bearing bushing 19, and to replace the beading roll with another one.

The bead 84 isformed by the beading roll 69 in connection with a die including a die member 99 which is suitably mounted on the standard 65. This die member 99 is of substantially annular form and is mounted concentrically with reference to the axis ofthe drive shaft 2l'. In order to ensure the mounting of the die member 99 in correct relation to the standard and securely holding it in such relation, this member is provided with an annular projection 9| formed to extend into an annular recess formed in the cover plate 89. The die member 99 also has a pair of outwardly extending lugs 92 shown in Fig. 1, and in broken lines in Fig. 3, which are apertured to receive suitable bolts or screws for removably securing the die member on the cover plate 99.

rlhe die member has a die portion which is shaped to form the bottom and one side wall of the recess into which the bead 84 of a tube may enter. This die member for this purpose is provided with an annular inwardly extending projection or shoulder 94, see Figs. 2 and 13 to 16, which is formed to receive the end of the tube beyond the bead and to cooperate with the cylindrieal part 8l vof the beading roll 69 to hold the end of the tube beyond the bead in correct position, or to cooperate with the cylindrical part 8| to roll this end of the tube into correct position. The die member is also provided with an annular recess into which the bead may enter. This recess terminates in a radial wall 96, the outer edge of which terminates in an annular hub or cylindrical extension 91.

Suitable means are provided for gripping the tube 93 during the beading operation and for again releasing' the same when the formation of the bead is completed. In the construction shown for this purpose, I provide a chuck including jaws |99 of annular form formed in a plurality of equal sections, four such sections being shown in the drawings, see also Figs. 8 and 9. The sections of the jaw |99 are provided with radially extending surfaces formed to slide against the radial surface 96 of the die member 90 into and out of gripping engagement with the tube to be'beaded and these jaw members also form the outer side wall of a die recess formed by the parts 94 and 95 of the die member 90. The parts of the jaw member are so formed that when they are moved into their inner. -or f gripping positions,- they'fwill'- 4form a substantially unbroken circular wall *for the head1-recess -o-f the vdiemember.

Tia-aparts of vthef-ia-w i member im!) 1"are Vmovable for the'tubes. This guidemember is of annular form, and the outerfperipheryhas a slidabie'bearing the nteriorof .the hub Vor cylindrical@ portion 9-7 of lthe diemeinber. This guidef'member faces: yi 2? with which a :tube may enga-ge for prop- (arly-:centering Ithe same withreference .to the die member 90.

'Means are provided-for movingthe sections of the jaw towardeach other togrip the tubular member 'to Lbe beaded. In the constructionA illustrated, the guide memberv |f|f serves this purpose, and consequently, the guide member has an inclined or frusto-conical annular portion I4, which engages similarly inclined faces of the sections of the jaw Consequently, if the guide-memberi Iilis moved inwardly with reference to the hub'or cylindrical part `91 of the die member, the sectionsof the jaw B0 vwill be moved inwardly 'into the -tube gripping positions.

in Fig; 14, 1n -whichfthe end 4of the tubeengages the stopinemberor projection E82 of the beading the tube for holdthen swung in a clockwise direction in' Fig; 1, thus turning the pinion 4| 'to move the slide member l-to the right in Figjl, by means Vof the rack yteethv formed on this -member.

This causes the lcone' toenter -intothe and since the' circles. Consequently, by applying pressure `on theileveinas, the cone SII-through the-medium of the meohanismdescribedwill Wedge'the support'- ing member 58 and/the beading roll jfi!! carried thereby outwardly sothat-t-hese parts-willmove irl-the larger'circles, causing the vbeading roll to be forced against theinner sur-face 'ofthe' tube. l

and When-this depthfhas beenreachem the set "ljhesections -`ofthe-jaw |00 are then moved screw @Umaybe adjusted tostopvithe v1ever1|3inl this position, so thatfall tubesl its aXis is rotated in circles, thedliameter of which depends-upon the position of-zthe vcone 150' .with reference tothe conical re- Consequently, in forming the bead, the beading roll 60 rolls the ytube and, consequently, rio-abrasion or rub- A the the die member, inserted 'and' the operation repeated.

The machine is so constructed that it may Operate on tubes o1 a number of different diameters,

which requires the replacement of the die member, the jaw member I, the

mechanism Which is used toV contract the jaw member |08 also serves to facilitate the removal of those .parts necessary to This construction includes a .swinging membercomprising an. annular portion |20, one end of which isV hinged on the upright standard of the machine. This hinge is formed partly on a bracket |2| which may be -welded or otherwise secured on the upright standard 65, and which has a--pair of hinge lugs |22 spaced apart to receive a hinge part |24' Whichmay be formed integral with the annular part |20. ThisV annular part also hasa projection |25 at the side thereof opposite to the hinge and which is provided with an openeended slot |26, Fig. 3, into which a link @2l-may enter. The outer end of the link |2'| is threadedand cooperates with a nut |28 formed tolen'gagethe Aprojecting .part |25 .of the hinged annular member |20. Tension may be applied tothe llinkv |2'lfor swinging the hinge member on sil-linge inany suitable manner, -and i-n the kconstruction-illustrated, this tension may be applied by means of an upright pin or shaft |30 which upper end of the shaft i303 The-shaft has a lower end portion* |35 of on the inn-er surface of larger diameter which limits the extent to which the shaft may be moved upwardly with reference to its bearing |3| and at the upper end of the shaft a stop collar |33 is provided which is held in place on the shaft by means of a pin |31 extending through suitable holes formed in the shaft and stop collar, and the pin extends outwardly beyond the stop collar,` for reasons hereinafter more fully explained.

The lower end of the shaft |30 is provided with a crank or eccentric projection |38 shown in broken lines in Fig. 1, and the link |21 has an eye or eccentric strap |39 formed thereon into which the crank or eccentric projection |38 extends. The lower end of the crank or eccentric projection of the shaft may be threaded to receive a nut |40, which together with a washer |4l, Fig. 3, holds the link |21 in place on the crank or eccentric projection of the upright shaft |30. Consequently, it will be obvious that when the handle |33 is turned, the link |21 is moved in a direction to swing the hinged member |20 on its hinge toward the middle portion of the machine or to release the link to permit the hinged member to swing in the opposite direction. It may be desirable to provide a stop for limit- 'ing the swinging movement of the handle |33, and for this purpose, a plate or bracket |45 may be welded or otherwise secured to the bearing bracket |3| for the upright shaft |30. A set screw |46 may extend through a threaded hole in the plate or bracket |45 and extend into a position to engage the stop pin |31, and thus stopping further rotation of the eccentric shaft |30. The

set screw |46 may be locked in place by means of a lock nut, as Shown in The annular portion of the swinging or hinged member |20 extends loosely around a ring |50 which is slidably mounted on the outer face of the annular extension 91 of the die member 90 and sliding movement of the ring |50 is effected by the swinging of the hinged member. For this purpose, the hinged member is provided at its upper end with a screw or pin extending radially through a threaded hole in the hinged member |20 and having its lower end formed to enter into a hole |52 formed in the slidable ring |50. The lower end of the hinged member is providedl with a screw or pin which is formed to fit into a hole or slot |54 formed in the lower portion of the slidable ring |50. It will, consequently, be evident that the swinging of the hinge member about its hinge Fig. 1.

to a limited extent will result in movement of the slidable ring |50 on the projection 91 of the die member.

Means are provided for transmitting the movement of the slidable ring |50 to the tube guide member ||0, and in the construction shown forl this purpose, see particularly Figs. 10, 13 and 16, the cylindrical part 91 of the die member is provided with a plurality of longitudinally extending slots |58, and pins |59 are provided which have their inner ends screwed or otherwise the tube guide member H0. These pins extend through the slots |53 of the cylindrical part 91 and their outer portions extend into suitable holes formed in the slide ring |50. Three such pins and three slots |58 are shown by way of example in the drawings. The holes in the slide ring into which4 the pins |59 extend are preferably in the form of bayonet slots |60, as shown more clearly in Figs. 1l and 12, so as to facilitate the assembly and dismantling of these parts. Any other suitable means for moving the guide ring fastened to |53, the inner end of -screw-threaded pins machine may wise to actuate the tube gripping jaw member |00 may be provided.

In the operation of this part of the machine, the tube guide member ||0 may be moved to actuate the jaw |00 by turning the handle |33 which in turn moves the link |21 in a direction to vswing the hinged member about its hinge toward the machine. This swinging motion is transmitted to the slide ring |50 through the lmedium of the pins or screws |5| and |53, and the slide ring operates the tube guide member l0 through the pins |59 to move the jaw member |00 into the position shown in Figs. 13, 14 and`15 for gripping the tube and holding the same while the bead is being formed thereon. When the arm |33 is swung in the opposite direction to move the link |21 to the right in Fig. 1, the tube guide member ||0 will be moved to the right into the position shown in Fig. 16, so that the parts of the jaw |00 may be separated to permit the beaded tube to be withdrawn from the die.

When it is desired to change the machine to operate on different tubes of diiferent sizes, or to form a different type of bead on the same size tube, the tension on the link |21 is released by swinging the handle |33, and the nut |28 on the link |21 may then be turned out of engagementA with the projection of the hinge member, whereupon the link |21 may be swung out of engagement with the projection of the hinge member. This member can then be released from the sliding ring by unscrewing the pin or screw |5| sufliciently to enable this screw to disengage the slidable ring, and if desired, the other screw |53 may also be unscrewed, or if the same engages in a slot, such as the slot |54 shown in Fig. 2, `the hinge member can then be swung out of the way clear of the Sliding ring |50. The sliding ring can readily be disconnected from the tube guide member ||0 by turning that the pins |59 may pass through the open ends of the angle-shaped or bayonet slots |60. The

|59 can then readily be unscrewed from the tube guide member ||0 and moved out of these slots |58 of the cylindrical extension 91 of the die member 90, whereupon the tube guide member ||0 and the parts of the jaw |00 can readily be removed from the interior of the tubular extension 91 of the die member 90. 1f it is also necessary to remove the'die member to replace the same by one of a diiierent shape or size, it is merely necessaryto release the screws extending through the lugs 92 of the die member. -The beading roll can be removed by merely moving the same to the right in Figs. 2, 14 and l5, fso that the stub shaft will slide out of its bearing bushing 19. All of the other parts of the be left unchanged to operate on tubes of various sizes. In operating on a tube of relatively small diameter to form a comparatively small bead thereon, the cone 50 will enter the conical opening 56 to a lesser extent by operation of the lever 43.

As will be seen from the foregoing description, the machine is of relatively simple construction and can Ioperate very efficiently on beading tubes. When the parts are all set up for forming beads on a number of tubes of the same size, it is merely necessary for the operator to insert the tubes one at a time into the tube guide I0 and past the jaw |00 into engagement with the stop plate or disk 02. The operator then swings the handle or arm |33 into a pre-adjusted stop position as determined by the stop screw |46, and the operator then swings the lever 43 to cause the cone 50 to the sliding ring so i '15'1 enter the conicalrecess 56 and' :move vthe axis of the bead roll in a substantially `circular path-and to exert a pressure on the bead rollin a direction to urge the same outwardly against the tube. The speed with which the bead-,is formed may be regulatedA by the rate'of movementof the lever 43 toward the stop screw 48 .whichhas-previously been adjusted-'to determine the-extentto which-.the tube is tobeheaded.- Wheny thelever 43 contacts the stopl screw 4'8, it isfswung in a counterclockwise direction'v in Fig. 1, and. the handle |33 is moved ina direction` to release. the tube, whereupon the'tubeis pulled zout of the machine and another tubeinserted in its place for beading.

Because of the rollingfbearings provided, `the cone 50 will roll in the recess 56v andwwill :impart to the beading roll `supporting,member 58 a movement of translation in generally circular paths. The supporting member, however, -is free toy turn on its axis within the recess 64, so that a-I rotary movement may be combined with the lmovement of translation withou-t fin any,way-afiecting` the operation of the machine. The recess/56 need not be conical in shape, thel conical-form being employed `merely to provide an extended bea-ring between the cone and the recess. Similarly',l if the' recessv 56- is of conicalform, theconel 50 `may be replaced byanoutwardly extending'finger or projection of any other shape Vto. operate`v in-the conicalrecess.

I-claim as my invention:

1. In a machine for beading tubular members, `the .combination Aof a rotatableA V.drive shaft mounted to alsoV move axially,- -an-eccentric von said drive shaft,A a beading roll, afsupporting memthe axis of said shaft and beading -rol1, ;andfa -drivingconnection between said eccentric and ysaid supporting member including a part drivenyby portion to vary the path of movement -ofsaid supporting member when said drive `shaft is moved axially.

3. In a mach-ine for'beading .tubular members, theco bination of a die for cooperating vwith la tubular member, a beading roll for cooperation i with said tubular memberand, said die to form a bead ony a tubular member, a .supporting member onwhich. said beading roll is mounted, said supporting member being moun-ted for substantial- 1y .circularmotion in a plane parallel tothev bead to be formed,v a drive shaftior` applying circular `motion to said supporting member, and .means for varyingthe size ofthecircles in whichsaidlsup.-

porting. member travels includinga cone-shaped part-.anda part having aconical. recess into which said cone-,shaped part may enter in eccentric relation thereto,. one ofl saidparts beingdriven by saicldrive shaft and the other partbeing onrsaid supporting member.

,4. In a machine Afor beading tubular members, I

the combination of a die for cooperating .with a Ytubular member, a beading roll for cooperation with said tubularmember and said die to form ahead on` a.tubular member, a supportingrmember on which Vsaid beading roll lis.mo1.1nted,lsaid supporting member. being mounted for substantially circular Vmotion in a ,plane parallel `to the bead to be formeda.drive shaft for applyingciring connection between saidshaft and said supporting member includingapart havinga substantiallyconical. surface with litsaxis extending substantially parallel to said drive shaft, and means for producing relative v`motion between said drive shaft and said supporting member to cause said conicalsurface to vary theSize `of the circles in which said supporting member moves. 1

5. In a machine for beadingtubularvmembers, the combination of a die for cooperating with a tubular member, a kbeading roll for cooperation with said tubularmember and said Ldietoform Aa bead'ona tubular member, asupportingmembe extent, and a driving connection between said by saidfd'ri'v shaft.

7. In amachinefor beadingtubular members,

on which Said beading km11 is mounted. 4said supporting member being mounted for substantially circular motion in a plane parallel to the bead to be formed, a drive shaft for applying circular motion to said supporting member and mounted to rotate and also to move lengthwise to a limited extent, a cone mounted eccentrically on said drive shaft with its axis extending substantially parallel with the axis of said drive shaft, a part mounted on said supporting member and having a conical recess into which said cone may enter for moving said supporting member in circular motion and for varying the size of the circles in which said supporting member moves when said shaft is moved lengthwise.

S. In a machine for beading tubular members having a beading roll arranged with its axis movable in a circular path to form a' bead on a tubular member, that improvement which comprises driving means for said beading roll, including a supporting member` on which said beading roll is mounted and which is mounted for movement in generally circular paths, a driving shaft, a part eccentrically mounted on said driving shaft and connected with said supporting member for imparting circular motion thereto, and wedge means in said driving connection and actuated by relative axial movement of said supporting member and said drive shaft for varying the size of circles in which said supporting member is moved and for pressing said beading roll against the tubular member.

9. In a machine for beading tubular members having a beading roll arranged with its axis movable in a circular path to form a bead on a tubular member, that improvement which comprises a supporting member on which said beading roll is mounted, a fixed standard having a recess therein extending transversely of said beading roll, and in which said supporting member is arranged for circular motion, a die mounted on said standard and with which said beading roll cooperates to form a bead on a tubular member, and means for imparting circular motion to said supporting member, said means being adjustable to move said supporting member in circles of diierent diameters.

10. A machine for forming an outwardly extending bead on a tubular member, including a stationary standard, a die member mounted on said standard be beaded and having a recess therein into which the bead may enter, a gripping member for holding the tubular member `during the beading .operation, a beading roll of a size formed to extend into the tube, a supporting member for said beading roll and mounted for substantially circular movement on said standard, and means for imparting circular movement to said supporting member to move in circles of varying diameters, to enable said beading roll to be pressed into engagement with the inner surface of the tubular member to form a bead thereon.

11. A machine for forming an outwardly extending bead on a tubular member, including a stationary standard, a die member mounted on said standard to receive a tubular member to be beaded and having a recess therein into which the bead may enter, a gripping member for holding the tubular member during the beading operation, a beading roll of a size formed to extend into the tube, a supporting member for said beading roll and mounted for substantially circular movement on said standard, means for imparting circular movement move in circles of varying diameters, to enable to receive a tubular member to said beading roll to be pressed into engagement with the inner surface'of the tubular member to form a bead thereon, said means including a rotatable driving shaft movable lengthwise, and an eccentric driving connection between said shaft and said supporting member including a part having a surface inclined with reference to the axis or said drive shaft, whereby lengthwise movement of said shaft varies the size of the circles in which said supporting member is moved.

12. A beading machine according to claim 11, and which includes resilient means for urging said supporting memberl into a position in which the beading roll is substantially concentric with the tube to be beaded.

13. In a machine for forming circular outwardly extending beads on a tubular member, including a die within which said tubular member is held for beading, a beading roll arranged to extend into said tubular member and to cooperate with said die for forming a bead on said tubular member, a supporting member on which said beading roll is mounted, means for guiding said supporting member for circular movement in a plane parallel with the bead to be formed, a member rotatably and axially mounted on said supporting member and having a substantially conical recess therein, a drive shaft mounted to rotate and also to move in the direction of its length, an eccentric on said drive shaft, and a part rotatably mounted on said eccentric and having a portion extending eccentrically into said conical recess for imparting circular motion to said supporting member, and means for shifting said drive shaft in the direction .of its length to move said portion entering into said conical recess into and out o said recess for varying the size of circles in which said supporting member moves and thereby pressing said beading roll against the inner face of said tubular member to form a bead thereon.

14. In a machine for forming circular outwardly extending beads on a tubular member, including a die within which said tubular member is held for beading, a beading roll arranged to extend into said tubular member and to cooperate with said die for forming a bead on said tubular member, a supporting member on which said beading roll is mounted, means for guiding said supporting member for circular movement in a plane parallel with the bead to be formed, a part rotatably mounted on said supporting member and having an axially extending aperture therein, a drive shaft mounted to rotate and to move in the direction of its length, and eccentric on said shaft, a part rotatably mounted on said eccentric and having a conical portion substantially coaxial with said eccentric and mounted to extend into said recess in eccentric relation theretoto impart rotary movement to said supporting member, and means for moving said shaft lengthwise to cause said conical member to enter to varying extents into said recess to vary the radii of circles in which said supporting member is moved and thereby to press said beading roll to said supporting member to against the tubular member to lform a bead thereon.

15. In a machine for forming outwardly extending circular beads on tubular members, including a fixed standard, a die member mounted on said standard to receive a tubular member to be beaded, a supporting member mounted'for movement in generally circular paths parallel to the bead to be formed, a beading roll mounted on said supporting member in position to extend into the tubular member to be beaded, a tube grip- A :pngfjam'forrmeddfapinralityf ai sectiensf-movabie .mtofand;.outofprgrppmg relation vto a tubular .eesslintofwhehx:theheadgmay enter, means co- :operating with sa'dfjawrmemberfor-mging the sections-f thereoffinto: gripping engagement with said-:tubeandfor .releasingzsaid sections to, permit 4me. beadeditubeiofbef removed fromv the machine,

4.'zmca:meansfor impartmg-Lcrrcular manon in cir- JOHN L. MARSH.

The following references are lof REFERENCES ACITED v record in `the 111e of this patent:

'Y UNITED STATES PATENTS Number "Name Date Thompson Oct. 10, 1871 Syverson Aug. 1 1876 YOcula'ei'azl Dec. 26, 1882 Allen June 12,1883 J`.ovek1'n v Dec. k5, 1905 Bauroth Oct. 15, 1912 Fulton et al.. Jan. 6, 1925 Strauchauer et a1. Dec. 24, 1929 Dreyer Sept. 27, 1932

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