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Publication numberUS863208 A
Publication typeGrant
Publication dateAug 13, 1907
Filing dateJul 31, 1905
Priority dateJul 31, 1905
Publication numberUS 863208 A, US 863208A, US-A-863208, US863208 A, US863208A
InventorsFrancis C Osborn
Original AssigneeFrancis C Osborn
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cut-off mechanism for paper-tube machines.
US 863208 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

PATENTED AUG. 13, 1907.




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No. 863,208. PATENTBD AUG. 13, 1907. F. G. OSBORN.




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Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed July 31,1905. Serial No. 271,379.

To all whom it may concern:

Be it known that I, FRANCIS O. OSBORN, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Cut-Off Mechanism for Paper-Tube Machines, of which the following is a specification.

My invention relates to that type of machines by which continuous strips or bands of paper or other similar material are carried spirally around a mandrel, cemented together, formed into continuous tubes, and finally cut off into predetermined lengths. The objects of my improvements areto provide a machine of this class that can be quickly and easily adjusted for paper of varying widths and for tubes of different diameters; to provide means whereby the tubes are made of two or more layers, the inner surface of the inner layer being evenly coated with paraffin and the inner surface of the other layers being coated with glue or other cement; to provide means whereby the parafiin and glue will be evenly spread on the strips of material; to provide guides for the paper that are easily adjustable; 'to provide means to accurately and cleanly cut the tube into lengths and to provide means to quickly dry the cement of an auxiliary between the layers of the material. I attain these objects by the construction illustrated in the accompanying drawings, in which Figure l is a general plan of the machine. Fig. 2 is an elevation of the cut off mechanisin. Figs 3, 4 and 5 are details of the cut off mechanism, .Fig. 4 being a cross section on the line 44 of Fig. 2. Fig. 6 is a plan of the cut off mechanism on a somewhat smaller scale. Figs. 7, 8 and 16 are details of the belt carrying mechanism for winding the tubes. Figs. 9, 10 and 11 are details of paper guides. the paper coating mechanism. Figs. 15 and 19 are views of guides for the paper strips that are adapted to be secured on the forming mandrel. Fig. 17 is a view bearing for the saw shaft. Fig. 18- is a cross section through the driving pulley of the saw.

' Similar reference characters refer to like parts throughout the several views.

The base or bed A of the machine is similar to a lathe bed and is supported by legs as shown in Fig. 1. On this bed are pivoted the swinging bed pieces IE, and the swinging arm B. The pivots of the bed pieces B and arm B are in line with each other. To one end of each of the flat bed pieces is secured a slidable support F for the pulley P, the distance between this pulleyand the pulley P being varied by the screw F. At the other end of the bed piece is the journal bracket .T of the shaft 0, which bracket is pivoted on the screw j. Outside of the bracket J isthe uprightbearing K of the stud shaft 70 of the pulley P. On the lower end of the shaft k is the gear L which meshes with the pinion N on the shaft 0. Inside of the bracket J is the bearing 0 of the pivoted to the bearing 0 Figs. 12, 13 and 14 are details of guided between the pins in shaft It which shaft extends across and is splined in a sleeve 1, carrying a pinion N which meshes with a second gear L on a second shaft is which carries the pulley I at its upper end. One of these bed pieces B is provided for each two thicknesses of material used to make the tube.

At the head end of the base A is a small bracket a, to which is pivoted the swinging arm B which'is in turn on the shaft C. This bearing is held from longitudinal movement on the shaft by the collars c. A link 1) is pivoted to all the swinging bed pieces B by the pins 7', and as the distance between the pins j is the same as that between the pins X of the swinging bed pieces, the several bed pieces will always remain parallel to each other. The angle between the bed pieces and the base is dctermined' by the graduated screw W supported by the bracket E secured to the base A, which screw engages in the nut U which is pivoted at one end of the first bed piece B in line with the screws X and j, and equi-distant from X with j. As will be seen in Fig. 1, the screw W is graduated so the angle between the bed pieces B and the mandrel can beaccurately determined.

The machine is driven from an over-head countershaft of any desired construction on which countershaft is secured a wide driving pulley which pulley is connected by means of a 'driving belt with the pulley p. The bolts 1) pass around the mandrel M as shown in Fig. 1 and should be about as wide as the material wound. The hollow mandrel is securely fixed in the head H of the machine. For the purpose of heating the mandrel so that the paraffin will penetrate the material of the strip and flow into the joint between the spirals and also dry the cement, I provide a steam pipe;bent upon itself extending the length of the mandrel and having ends m projecting from one end of the mandrel, which pipe ends may be connected to any steam source.

The means for coating the paper strip with paraffin or glue is designated by G, and consists of the tank 70 supported on su'itablelegs, and having secured to it the arms 71 carrying the pin 72 upon which is mounted the roll of paper 73. J ournaled on the pin 74 is the roller 75 which dips into the liquid paraffin or cement and carries it up against the lower face of the paper strip. This strip is the holes 76 in the arm 77 pivoted to the sides of the arms 71. The guide roll 78 is supported on the pin 80 secured in the frame 82 at the upper end of the rod 83. On the pin 81 are secured the collars 84 having fingers 85 which press against the coated side of the paper strip. Usually the coating material collects on the outer edges of the strip but by means of the fingers 85 it is spread evenly toward the center. It will be'noticed that by reason of the roll 78 the coated'strip will pass to the tube making machine with the coated side up, thus not only avoiding any I the strip is fed to the machine with the coated side down, but also permitting the coating to level itself on end of the shaft 20.

the flat surface.

To the base are secured the paper guides as shown in Fig. 1, each consisting of the base 90 to which is secured the arm 91 carrying the fixed part 92 of the guide and the slidable part 93, secured to the part 92by bolts.

An auxiliary guide for the paper strips is shown in Fig. 15 and consists of the spirally arranged guide 95 secured to the mandrel M ag'ainst which the inner strip of paper 97 will run, and over this guide 95, to position the strip 96, is secured an arm 98 which bears'the guide 99 against which the outer strip 96 will run. With certain grades of paper,-the guide shown in Fig. 19 is found to be of great value. Instead of the short piece 95 as in Fig. 15, the part 100 is madeto pass around the mandrel. The paper is wound upon the spiralsheet of brass 101, which extends until just before the place where the first belt I) embraces the mandrel. The mandrel M being of less diameter at this point, the tube will slip around it more easily. The arm 98 and guide 99 are used asbefore. The part 101 serves a similar purpose to part 100 in that it acts as a shoulder to force the paper along the mandrel and acts on the inner strip after it has left the part 100 and after the outer strip has been wound I upon it.

Secured to the end of the base is an arm h which carries the means for cutting the tube into predetermined lengths. The outer end of arm h is broadened to form a plate S to which is adjustably secured the table T. The table is slidable on the plate and adjustable sidewise by the small set screws t shown in Fig. 6. Attached to the table T are twd arms -1, between which is pivoted the frame 4). This frame is braced by the cross pieces 50 and the vertical piece 51. In the upper part of this frame is journaled the arbor 10 for the saw 110 for cutting off the tubes. I This arbor is 'slidable longitudinally in its journals and the position of the saw while cutting is controlled by the following means.

The tube as it comes from the mandrel abuts against the plate 14 on the end of the slidable rod 13 as shown in the dotted lines in Fig. 4. This rod is supported by and is slidable in the upper end of the'arm 15 which is I carried by the revoluble rod 35 and by the arm 8 car- '3 saw arbor is driven by a belt from an over-head pulley sleeve 53 journaled in ried on the saw arbor. Adjustable collars 52 on the rod 13 position the plate 14 with reference to the saw. The

to the flanged pulley 12 on the thebearing 54 of the frame 2. (Fig. 18). A feather 102 in the arbor key'seat forms the driving connection between the arbor and the pulley. To the frame 2 are attached arms 4 and 5 which engage cams 55 and 56 respectively on the shaft 20. (Fig. 3). When therefore the shaft 20 is revolved the frame with the saw will be swung toward and away from the tube. In the outer ends of the arms 1 is journaled the constantly running screw 3 which is intended to return the saw 110 to its initial position, which screw is constantly driven by means of the pinion 36 which meshes with the gear 37 (Fig. 2) secured to the pulley 57,loosely mounted on the This pulley is driven by a belt 58' on pulley 59 on the shaft C as shown in Fig. 1. The

2, secured to the shaft 35, which pro- 1 (Figs. 6 and l belt is tightened by the pulley 60 on the arm 61, loosely mounted on the outer end of the shaft 20. Secured to the shaft 20 is a disk 38 and loose on the outer end of the shaft is a second disk 39 having a pin 40 which passes through aslot near the end of the shaft. A screw 41 in the end of the shaft contacting with this pin regulates the pressure between the disks and the pulley and the frictional stress on the shaft. Secured to the shaft 20 are two collars 27 and 27, each having a'pin 62-62 projecting therefrom, the pins being so positioned as to project from opposite sides of theshaft so that the dogs 23 and 24 will alternately stop the shaft 20 when the frame 2 and with it the saw 110 is in-the withdrawn and in the operative positions respectively under the action of the cams. I

The arm-8 is pivoted on the saw arbor and positioned by two small collars. To prevent it from revolving with the arbor it slides on a rod 9 secured to the swinging frame 2. To this arm is attached a short bar 29 (Fig. 2) having a finger 28, which, when the arbor and with it the arm 8 has reached its outward position contacts with the dog 24, moving it away from the pin 2 and releases the shaft 20, which in turning swings the frame and saw back from the tube by the action of the cams. The dogs 23 and 24 return to position under the influence of the springs shown in Fig. 2.

On the arm 8 is a slidable plate 30 having a tooth 34 that engages the threads of the screw 3. This plate also has an upturned lug 33 and has its end bent to form the hook 31. The plateis held in its upper and lower posi tions by the spring 64 acting on the lug 65. In the end of the arm 8 is a pin 26 that is spring pressed outward as the saw begins to move with the tube.

The operation of the sawing mechanism is as follows her is free to slide underthe pressure of the tube against the plate 14. The pin 26 in the arm 8 is to the left of the dog 23 (Fig 2) and the tooth 34 is free from the screw Upon the tube pressing against the plate 14, the rod 13, the saw, the arbor and arm 8 are moved outward, the pin 26 moves dog 23 with it and pin 62 is released, permitting shaft 20 to turn part of a revolution which through the action of the cams on the arms 4 and 5 swings the frame 2 and with it the arbor 'andsaw toward the tube, sufficient for the saw to cut through the walls of I the tube. In so doing the hook 31 is brought in contact with the threads of the screw 3 causing the plate 30 to be pulled out, the spring 64 acting on lug 65 after passing the center to free the hook from the threads. The saw, arbor, arm 8, bar 29 and finger 28 move with the tube, cutting through the tube as it turns under the pull of the belts b, until the finger 28 contacts with the dog 24, moving'it to the right, (Fig. 2) which releases the pin 62 and permits the shaft 20 to turn the remainder of the revolution or untilthe other pin 62 engages the dog 23. In this part of the revolution the cams swing the frame 3 2 back from thc tube, bringing the tooth 34 into engagement with the screw 3, thus causing thearrn 8, the arbor and the saw to be carried to the position shown in Fig. 2. I When the pin 26 has passed the dog 23, which it can do owing to the beveled end, the pin 32 on the screw shaft .3 will contact with the lug 33 and force the tooth 34 out of engagement with the screw. The saw will then rel main in its withdrawn position until sufficient length and is intended to engage the dog 23 and trip the same When the saw is in the position shown in Fig. 1, the ararbor for engaging said screw of tube is formed to agaih push the plate 14 and the rod 13 outward. The amount of travel to the right and left is regulated by the position of finger 28 on the bar 29.

To prevent the tube being pulled back by the saw When the frame 2 is'withdrawn, I secure the arm 16 to the rigid rod 19 carried -by the table T. To this arm is secured the bar 17 with finger 18 which projects against the tube and:prevents it moving to the left with the saw (Fig. 4). To stiffen the saw arbor I secure a bar 66 to the arm 8 (Fig. 17 and provide a bearing 67 This con- 'struction is omitted from the other figures as it is not absolutely necessary for ordinary tubes.

- Having now explained my improvements, what I claim as my invention-and desire to secure by Letters Patent is,-

nally movable cutting tool carried by the swinging frame.

andmeans whereby the tube may move the cutting tool longitudinally.

In a tube making machine, the combination of lixed arms, a shaft l'evolubly mounted in said arms, an ecceir tric on said shaft, a screw revolubly mounted in said arms, a swinging frame carried by said ar1ns,' said frame having means to engage the eccentric, a saw arbor journaled and slidable in said frame, and means carried by the arbor in intermittent engagement with the screw whereby said arbor may be moved longitudinally in the frame when permitted by the eccentric.

4. In a tube making machine. the combination of fixed arms, a screw revolubiy mounted in said arms. a swinging frame carried by said arms, a saw arbor join-naled and slidable insaid frame, and means carried by the to cause said arbor to be moved longitudinally in said frame.

5. In a tube machine, the combination of a rigid frame of the tube whereby the tube may move the arbor in one direction, and an arm connected to the arbor having means -to engage the screw whereby the arbormay be moved in the opposite direction.

6. In a tube machine. the combination of a-rigid frame, a shaft having intermittent motion journaled in'the frame, cams on said shaft, stops carried by said shaft at an angle to each other, pivoted dogs carried by the frame normally in the paths of the stops, a constantly running screw jourthe shaft. 7. In a tube machine, the combination of a fixed frame, said fixed frame. a-sbui'i having intermittent motion journaled in the fixed frame,

a fixed frame secured to the bed, a

shaft at an angle to each other, dogs pivoted to said-arms and normally held in the paths of the stops, a swinging frame pivoted between the arms, a slidable arbor journaied in said frame and movable in one direction by the screw, and an arm slidable with said a'rbor for acting on 'the dogs alternately and so releasing the shaft so .it may revolve the angular distance between the stops.

9. In a tube formingv machine, the combination of a rigid frame, a frictionaily driven shaft journaled in said frame, cams on said shaft, stops on said shaft at an angle to each other, dogs pivoted to said frame each normally in the path of a stop, a swinging frame having means to engage the the swinging frame, an arm operate the dogs to release thestops so the shaft may. turn through the angular distance to the next stop, whereby the arbor carrying frame'wili be swung back and forth by the cams, and a constantly driven screw for carried by the arbor to moving the arbor in one direction when the frame has I journaled on said arbor, means secured to one end of the arm to-contact with said screw, an adjustable rod carried by the other end of the arm, and a plate at one end of the adjustable rod in the path of the tube whereby the saw arbor: may be moved in one direction, said arbor being moved in the other direction by the screw.

12. In a tube machine, the combination of a fixed frame, a horizontal rod: secured in said frame, a swinging frame pivoted in said fixed frame, a cutting-off saw carried by the swinging frame, and from the tube, and means carried by the horizontal rod to prevent the cut off portion of the tube from moving back with the saw. i

.13. In a tube machine, tiie combination of a shaft," :1 disk secured to said shaft, :1 second disk loose on said shaft, a constantly running pulley on said shaft between the disks whereby said shaft may be inicrmiilentiy driven, a gear secured to tho puiioy, :1. consiauiiy running screw driven by said gear, and a slidable saw arbor movable in one direction by said H1'i('\\.

- 14. In a cutting off maclilno, lilo combination of a bed,

means mounicd tiu'rcou lo support. i'hc article to be cut off, arms socurcd lo sold bod, a swinging frame connected tosaid arms. a saw arbor mouuicd for longitudinal movement in said frame, means for moving the saw arbor longitudinally in one direkeiioiu, and independent means for returning the nrbor.

15. In a cuttin oil. machine, the combination of a fixed frame, a screw revoiubiy mounted thereon, a swinging frame carried by the fixed frame, a cutting tool carried by the swinging frame, menus to engage the screw to move the tool in one direction, and independent means whereby the article to be cut ofi may move the tool in the opposite direction.

.iii. in a cutting off mechanism for chines, the combination of a frame, a saw arbor mounted therein, a saw on said arbor, and means for moving the I saw to operative position,

longitudinally under the action of the tube, swinging lim saw back to normal position and then moving the arbor longitudinally to the starting point.

in testimony whereof I have signed my name to this application in the presence of two subscribing witnesses.


earns, a slidable'arbor join-naled in means to move the saw to paper tube mapermitting the arbor to slide

Cooperative ClassificationB29C53/607