US1690287A

US1690287A - Method and machine for making paper tubes

Info

Publication number: US1690287A
Application number: US23497A
Authority: US
Inventors: Joseph N Francis
Original assignee: STANDARD COIN WRAPPERS Inc
Current assignee: STANDARD COIN WRAPPERS Inc
Priority date: 1925-04-16
Filing date: 1925-04-16
Publication date: 1928-11-06
Anticipated expiration: 1945-11-06

Description

J. N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Nov. 6, 1928.

Filed April 16, 1925 6 Sheets-Sheet l 6 Sheets-Sheet 2 NNN J. N. FRANCIS @www Filed April 16, 1925 METHOD AND MACHINE FOR MAKING PAPER TUBES Nov. 6, 1928.

Nov. 6, 1928. 1,690,287

J. N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Filed April 16, 1925 6 Sheets-Sheet 4 1mm Q @wl/wai;

Nov. 6, 1928.

J. N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Filed Apri1'1e, 1925 6 Sheets-Sheet 5 Nov. 6, 1928.

J.- N. FRANCIS METHOD AND MACHINE FOR MAKING PAPER TUBES Filed -April 16, 6 Sheets-Sheet 6 Patented' Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

JOSEPH N. FRANCIS, OF WOBRN, MASSACHUSETTS, ASSIGNOR TO STANDARD COIN `WRAPPIRS, INC., OF BOSTON, MASSACHUSETTSA 'CORPORATION OF MSSACHU- SETTS.

i' METHOD AND MACHINE FOR MAKING PAPER TUBES.

Application led April 16, 1925. Serial No. 23,497.

This invention relates toV a method and machine for forming up paper tubes, each having one end beaded inwardly so as to retain "the tube rolled without the use of adhesive and so as to form an internal ledge against which may rest one end of a stack. of coins or similar articles for which the tube is designed to serve as a container.

According to this invention the paper, cut in strips slightly lwider than the length ot the finished tube and which may be rolled, is led through a device for ironing out the curl produced by being rolled, is then printed,v

if it is desired to have printed matter appear on the iinished tube, is then cut successively into lengths between the printed portions, and these lengths are then successive'- ly rolled into tube form and one end beaded f Beside thel general method and machine organization this invention comprises various mechanisms for performing certain of the steps of the method, and advantageous details and combinations of parts which will appear from a more complete description ot' embodiments thereof shown in the accompanying drawings in which Y Figures 1 and la represent a side elevation `of the machine.

Figure 2 is a plan view of that portion of the machine shown in Figure 1a. Figure 2a is a detail plan similar to aI portion of Figure 2 but illustrating a modilication.

Figure 3 is perspective view of the bead 'forming mechanism, the tube being shown in dotted lines.

Figure l is a` perspective view of the mandrel and the tube ejector. 40 Figure 5 is a detail section taken on line 5 5 of Figure 4.

Figure 6 is an end elevation of the ma chine looking from the right in Figure 1a.

Figure 7 is a plan of a portion of the sheet after the printing and certain of the cutting operations have been performed.

Figure 8 is a view similar to Figure 7 but.

showing the sheet in a more advanced stage of the process. e n

Figure 9 is a plan of the blank severed from the sheet preparatory 'to winding it into tube form.

Figure 10 is a perspective view ofthe finished tube, a portion being broken away to illustrate the bead construction which pretVegte unrolling of the convolutions of the Figure ll is a section on line 11-11 of Figure 2.

Figure l2 is a detail section on line 12--12 oi. Figure 11, parts being broken away.

Figures 13, 14 and 15 are sections on lines 12B- 13, lll-lil and 15u-15, respectively, of Figure 2.

Figure 16 is la section along line 16-16 of.

Figure 2 at the upper portion ofthe machine.

Figures 17, 18 and 19 are detail sections on lines 17-17, 18-18 and 19--19, respectively, of Figure 6.

Figure 20 is a detail perspective of the beading tool carrier block.

Figure 21 is an enlarged detail sectional view similar to a portion of Figure 19 and showing by dotted lines certain parts in different positions.

Figures 22 to 25 are det-vail views illustrating the bead forming mechanism in differentportions of its cycle of operation.

The paper to be formed into the tubes may be taken from a suitable roll indicated at l (Figure 1), the strip being of a width somein carriages 4 .and 5 slidable on guide rods G and 7. The rods G have Vheads 8 at their outer ends between which and the carriages 4, are positioned springs 9 which act to press the carriages away from these heads. The carriages 5 are pressed toward the free endot' the rods 7 by means of springs 10 reacting between them and collars 11 fixed to these rods. During the intermittent diced,

pull is exerted on thepaper strip in a direction to move the roller 4 on' the carriages away from the roll of paper, and the roller on the carriages 5 toward the roll of paper against the tension exerted by the

springs

9 and 10.' As the intermittent feed of the paper stops, these springs act to move the rollers in the opposite direction and take up the slack in the paper which continues to be unwound from the roll 1.

After passing through this tension takeup device the paper passes through an ironing mechanism at B which is'so designed as to remove the curl which has been imparted to the paper by being wound in roll form. This ironing device accomplishes this object by bending the paper in the reverse direction to the curl of winding. It comprises a bar 12 which is pivoted at opposite ends as at 13 and 14 in

side frames

15 and 16 of the machine as shown best in Figures 1, 1x1 and 2. This bar 12 has a fiat face over which the sheet of paper passes and cooperating with this face is a bar 20 which is spring-pressed toward the bar 12 to hold the paper parallel to this face as by means of coil springs 21 surrounding bolts 22 passing through slots 23 in the bar 20 and threaded into the bar 12. One of the pivots 14 of the bar 12 is extended outwardly of the side frame 16 in the formV of a rod or pin 25 which is threaded at its outer end for the reception of an adjusting nut 26. This nut bears against a Washer 27 and betweenl the washer 27 andthe machine frame 16 is positioned a coil spring 28. This spring 28, acting on the washer 27 and the nut 26, pulls the bar 12 against the inner face of the fralne 16, thus imposing a frictional resistance to the pivotal motion of this bar, but permitting this bar, together with the bar 2() carried thereby, t9 be turned to any desired angular position. By this means the direction and amount of the bendin action imparted to the paper as it passes etween these bars may be adjusted in conformity with the amount of curl in the paper as it comes from the roll 1 so that the curl may be substantially neutralized. This is of importance in feeding the sucecessive lengths of the strip to the tube-forming mechanism as will later appear, it being much easier to properly present these lengths if they are fiat rather than curled as they would be if it were not for the ironing'device B.

Next the paper passes through a printing mechanism at C by which suitable printed matter which will appear on the outer face of the tubes when complete may be im pressed at the proper intervals on the sheet of paper. As best shown in Figures 1, 2, and 11. this printing device comprises a pair of spools 30 and 31 carrying an ink ribbon 32 which passes from one to the other beneath a suitable platen 33 and beneath which the strip of paper is drawn. Guide rollers 34 may be positioned at opposite sides of the plate 23 to retain the ink ribbon in proper relation thereto. Beneath the strip of paper is positioned the printing plate which is supported on the upper face of a plunger head 35. The plunger for this head extends through a vertical guide member 36 having a cover plate 37 and its lower end is connected as by a link 38 pivoted thereto at 39 with an eccentric strap 40, to which the opposite end of the link 38 is fixed at 41. This strap surrounds an eccentric 42 fixed to a transverse shaft 44 journaled in bearings in the

frame members

15 and 16. The shaft 44 is driven in time with the other mechanisms of the machine through a shaft 45 extending longitudinally between the side.

frames

15 and 16. this shaft having fixed thereto a beveled gear 46 meshing with a similar gear 47 fixed to the shaft 44. The shaft 44 also actuates means for feeding the ink ribbon from one to the other of the spools 30 and 31. For this purpose it is extended outwardly of the frame 15 and carries at its outer end a cam 50 on which rides a cam follower 51 journaled at the lower end of a thrust rod 52. This thrust rod is vertically slidable through a pair of bearing brackets 53 and a spring 54 surrounding this rod and bearing at its upper end beneath the under side of the upper bearing 53 and at -its lower end against a collar 55 carried by this rod acts to hold the cam ro'ller 51 in contact with the surface of the cam 50. The upper end of the thrust rod 52 is pivotally connected to a link 55, the upper end of which is pivoted to a crank arm 56 having an elongated hub 57 fixed to a rock shaft 58. This rock shaft extends lengthwise of the frame member 15 adjacent to its upper end and is journaled in spaced bearings 59 fixed thereto. One end of this rock shaft 58 carries an arm GQ, the outer free end of which extends beneath a bar or rod 61 vertically slidable through a sleeve 62 at the outer end of a plate 63. This plate 63 may extend across the upper edges of the

frame members

15 and 16 and may support the guide rollers 34 and the printing plate 33. The upper end of the bar 61 engages the outer end of an arm 65, the inner end of which is pivoted at the axis 66 of the ink ribbon spool 31. The arm carries a pawl 67 pressed by a spring 68 into engagement with a ratchet wheel 70, fixed to the pivot shaft 66 of this spool 31, so that at each upward thrust imparted to the bar 61 the pawl 67 acts to turn the ratchet wheel 70, while at each downward motion of the thrust rod 61 the pawl retracts for engagement with another ratchet tooth, the spool being prevented from retrograde movement by means of a spring holding pawl 71 which engages the ratchet teeth. Between each printing movement of the printing head 35, therefore, the spool 31 is rotated slightly in order to present a fresh portion of the ink ribbon for each printing action. In order fib til

Ulli

i the lower portion of the bar 80 adjacent tol that the ink ribbon may be turned backwardly on to the spool this spool 30 is provided with a driving shaft having a crank handle 76 thereon. Each of the ink ribbon spools may be retainedlbetween nuts 77 threaded on opposite ends of a sleeve 78 (see Figure 12) which may be slid in position over lthe central shaft. The shaft 75 for the non-driven spool 30 may have a pin 79 extending laterally thereof, engaging in a slot in one end of the sleeve (Figure 12). By a similar pin and slot construction the spool 31 may be rotatably connected with the shaft 66 to which the ratchet wheel 70 is fixed.

In order that the spools may be removed from their pivot shafts` and new ribbon spools substituted, a readily removable retaining device for the spools has been provided. This comprises a bar 80 having its opposite ends formed to engage over the free ends of the spool shaft-s 75 and 66. and the sleeves 78. This bar 80 is shown as pivoted substantially centrally of its length at 81 between lugs 82 extending upwardly from the plate 63. As shown bestin Figure 12,

the pivot 81 is provided with a cam surface 84 on which rests the free end of a spring arm 85 fixed by bolts 86 to a block 87 extending upwardly from the plate, 63. This spring finger 85 acts to yieldingly hold the ends of the bar 80 up against theshafts 66 and 75 and sleeves 78 so as to retain the spools in position thereon. The bearings Vstrip passes over a cross plate and beneath a guide plate 101 lixed to its upper face. It then passes over a guiding anvil plate 102 having a centrally depressed stripreceiving seat 103. Adjacent one end, this plate 102 is provided with a shear blade with which cooperates a blade 104 on a knife arm 105. This knife arm is pivoted diagonally to the length of the strip on a pivot pin 106, and'is held up against a bearing 107 on the plate 102 to press the blade 104 against its mating fixed blade by means o f a spring 108 surrounding the pivot 106 and bearing between the knife arm and a washer and adjusting nut 110 on the pivot. The `outer end of the knife arm 105 is connected A by an adjustable link 111 to a sleeve 112 slidable axially along a long crank pin 113. This crank pin is supported from the rock shaft 58 by means of arms 115. The amount i l to which the long crank pin 113 may be depressed, this determining the extent of opening of the shearblades, may be determined by an adjustable bolt threaded into a' yThe plate 102 is adjustable lengthwise of the

frame members

15 and 16, the sleeve 112 engaging the pin 113 in all adjusted posi' tions of the plate, suitable guide pieces 120 being fixed to these frame pieces as indicated best in Figures 2 and 13, and each of these guide pieces having an outwardly extending rib 120 beneath which engages a strip 121 carried at the corresponding end of the plate 102. It will thus be seen that the position lengthwise of the sheet at which the shear blade 104 will cut the edge portion of the strip may be adjusted lengthwise of the strip without affecting its operative connection to itsv driving mechanism. As shown this shear blade 104 makes spaced incisions from one edge of the sheet as shown in Figure 2 at 130.

Next the paper passes to the intermittent feeding device by which it is drawn from the roll through the ironing, printing, and edge cutting mechanisms. This feeding mechanism is best shownin Figures 1, 2-and strip passes, this drum being fixed to a shaft 14. It comprises a drum 150 over which the 151 extending through the

frame portions

15 and 16. The shaft 151 also carries fixed thereto a gear wheel 152`which meshes with a pinion' 153 fixed to a shaft 154 carrying a roller 165 above the drum 150. This shaft 154 is journaled in bearing boxes 155 slidable vertically in pedestal aws 156 fixed to the upper edges of the

frame pieces

15 and 16. The upper edges of these jaws 156 are joinedby a yoke member 157 Through this yoke member are passed vertically extending rods 158 having shoes 159 at their lower ends which are pressed by springs 160 against the shaft 154 on either side of the friction roller which is thus adapted to press lum against the upper face of thestrip of paper and force it into engagement with the periphery of the drum 150. The pressure of the springs V160 may be more or less overcome by means of a link through which4 vthe upper ends of the rods 158 extends, these rods having'nuts 171 threaded on their up- 'per ends above this link. Between the nuts 171 a screw -17 2 passes through the link 170, and bears at its lower end against the upper face of the yoke 157. 172 as by means of its knurled head 17 3 the links 170 may be raised, thus pulling up- By turning this screw llu warly on the rods 158 against .the action` of the springs 160. The drum 150 and the fric--v` tion roller 165 coo 1 erating therewith are intermittently driven in. order to feed the strip of paper therebetween. For this purpose.I the shaft 151 is extended through the -frame member 15 and hasv journaled thereon a gear '180. y This gear carries a disk 181 of larger diameter than the gear and this disk has pivoted thereon a pawl 182 which is pressed by la spring 183 into engagement with the teeth of a ratchet wheel 184 fixed to the shaft 151. By this means rotation of the gear 180 in one direction is caused to transmit motion by means of pawl 182 to the ratchet wheel 184 and thence to the drum 150 and the friction roller 165, while rotation in the reverse direction of the gear 180 will not act to turn the drum and frietion roller, the pawl 182 slipping over the ratchet teeth, a friction disk device 179 on the shaft 151 engaging the frame member 16, preventing reverse rotation of the drinn and roller. This gear 180 is oscillated to impart the desired intermittent rotation to the drum 150 and the friction roller to feed the strip of paper b means of a gear sector 185 meshing therewith and journaled on a bushing 186 eccentric-ally pivoted on a stub shaft 187. This bushing 186 has an arm 188 extending therefrom, opposite sides of which may be engaged by adjusting bolts 189 threaded through a pair of lugs 190 extending outwardly froin the frame piece 15. By manipulation ot' these bolts 189 the angular position of the bushing 186 may be adjusted, thus determining thecenter of oscillation of the sector 185. Extending from the sector 185 is an arm 192 to the end of which is pivoted at 193 the forked upper extreniity of a link 194. The lower end of this link is pivoted on a crank pin 195 ad- 'ustable radially in a crank arm 196 carried y a shaft 197 which extends through the

frame pieces

15 and 16. This shaft is provided with a beveled gear 198 with which meshes a similar gear 199 on the shaft 45. This beveled gear 199 also meshes with a similar beveled gear 200 on a shaft 201 in alinement with the shaft 45, this shaft being for a purpose which will later appear. It will be seen therefore thatin time with the up and down motion of the shear blade 104 and the printing device, the strip of paper is caused to move forwardly intermittently.

After passing through this feed device the strip passes beneath a cutter blade 210 extending diagonally aeross the width of the paper strip and inclined oppositely to the blade 104. This blade 210 is carried by a knife arm 211 pivoted at 212 on a bearing portion 213 npstanding from a plate 214. This plate 214 is adjustable lengthwise of the

frame members

15 and 16 on Ways 215, as shown best in Figure 15, similarly to the plate 102 on the guide pieces 120. The pivot lug 213 is positioned above and adjacent to the frame member 16 and its outer end has pivoted thereto an adjustable link 220, the lower end of which is pivotally connected to a sleeve 221' similar to the sleeve. 112 and which is s'lidable on a long crank pin 222 supportedv by crank arms 223 adjacent its opposite ends from a rock shaft 224. This rock shaft is journaled in bearings 225 fixed to the outer face of the frame member 16. One of these arms 223 has pivotally connected thereto a link 226, which,`in turn, is pivotally connected to a thrust rod 227 vertically Inovable through bearing members 228 extending outwardly from the frame member 16. This thrust rod is normally held downwardly by means of a spring 230 bearing at its upper end against the lower face of one of the bearings 228 and at its lower end against a washer 231 bearing against a in 232 passing through the rod 227 to hol a cam follower 233 at its lower end into contact with a cam 234. TheV crank arm 222 is also drawn downwardly by means of a spring 235 fixed at its upper end to one of the arms 223 and at its lower end, as at 236, to the frame member 16. The cam 234 is carried by a transverse shaft 240 extending through the

frame members

15 and 16, this shaft 240 carrying a beveled gear 241 meshing with a similar gear 242 carried at the opposite end of the shaft 201 from the beveled gear 200. Outwardly of the frame piece 15 the shaft 240 carries a gear 245 which meshes with a gear 246 carried by a stub shaft 247. Also fixed to rotate with the gear 246 is a larger gear 248 which meshes with a gear 249 on a'transverse shaft 250. The shaft 250 has fixed thereon a sprocket wheel 251 over which passes a sprocket chain 252 which engages another sprocket wheel 253 on a stub shaft 254. This stub shaft is carried at the outer end of an arm 255 which is pivoted at its inner end on the shaft 250. At an intermediate point of its length an adjusting bolt 256 is fixed to the arm 255, this bolt extending through an arcuate slot 257 in the frame piece 15. By this means the angular position of the arm 256 may be adjusted, this being for the purpose of adjusting the tightness of a sprocket chain 258 passing over a sprocket wheel 259 mounted to rotate with the wheel 253, this sprocket chain extending to another portion of the mechanism which is adjustably spaced from the

frame members

15 and 16, as will later appear.

The knife lblade 210 cuts entirely across the width of the strip of paper and forms with the slits 130 cut by the knife 104, a series of triangular waste pieces, as is illustrated at 260 in Figure 8. In order that these waste pieces may not he carried along with the lengths to be wound in tubular form, means may be provided for ejecting them from the path of the strip. Mechanism for accomplishing this function is shown best in Figures 1, 2 and 15. The shaft 250 is extended outwardly beyond the gear 249 and has fixed thereto a sprocket wheel 265 over which passes a sprocket chain 266. This sprocket chain passes about an adjustable tightening wheel 267 and also about a sprocket wheel 270 carried by a shaft 271. This shaft 271 has fixed thereto a llu vLesiones' roller '272 which bears on the upper' faceof the strip of paper close to the rear ofthe knife 210 and'holds it against a small roller 273 freely journaled therebeneath. Pivoted on the shaft 271 is a frame 274 which is connected by a link 275 to the knife arm 211 so that when the knife arm is depressed to cut the strip, the frame 274 is rocked downwardly about the shaft 271 as an axis. The shaft 271 has fixed thereto a beveled gear 276 which meshes with a similar gear 277 fixed to a shaft 278 j'ournaled ltransversely in the frame 274. At the op osite end of this shaft 278 is positioned a riction wheel 279, which, when the knife arm 211 is depressed, is brought into engagement with the triangular waste' piece 260 between the cut 130, and the cut 280 formed by the knife 210,

4and as this wheel 279 is being rotated by rotation of the shaft 271 as driven by the sprocket chain 266, this triangular piece'is' fed laterally out of line with the strip of paper and the lengths cut therefrom.

In order to remove this waste piece a sufficient distance to' prevent it from being fed forwardly with the successive lengths to the winding mechanism, a belt 285 passing over small pulleys 286 maybe brought down in position to receive the waste piece as it lis fed thereto byfthe wheel 27 9. This belt may be driven to feed the waste piece'away from the strip and for this purpose the inner belt pulley 286 is fixed to a shaft 287 journaled in the frame 274, this shaft 287 being geared to the shaft 278 through gears 288 and 289 on these respective shafts and an intermediate idler gear 290.

In some cases it may be desirable 'to dispense with the necessity of means for feeding the waste laterally from the strip. This may be accomplished by utilizing a modified form of knife carried by the knife arm 105 in place of the blade 1047 this being illustratf ed in Figure 2a.

The knife shown in. this .figure at 300 is V shaped and cooperates with a V shaped slot 301 in an extension 30.2 of the adjustable plate 303 which is mounted to traverse the guides 120 of the fra-me portions and 16 in the same manner as and in place of the plate'102. Q With this construction the triangular waste piece is cut' out entirely by the knife 300 and is carried down the slot 301 the knife out of the way. The paper then passes as in the form previously described to the knife 210 which completes the Vsevering of the strip as shown lby the dotted line -y in Figure 2a in line with one side of the V shaped slot.

It will be noted that the knives for forming the diagonally -arranged cuts in the sheetare adjustable toward and from each other by adjustment of the plates 102 or 303 and 214 along their guideways and also that 'the extent of feed movement imparted to the paper at eachsuccessive actuation is adjustable by adjusting the position of the crank pin 195 radially inthe crank arm 196,-

the knife 210 pass over an extension plate 310 projecting fro-m the plate 214 into position to be gripped by the winding mechanism F by which the lengths are wound into tubular formjand one end beaded inwardly. These lengths are wound upon a mandrel 320 shown detached in Figure 4, there being a mandrel of the proper dia-meter for each size of tube to be formed interchangeably in the machine. As therein shown this mandrel comprises a flute-d portion which preferably tapers slightly. being smaller at its free end. This mandrel at its larger end is provided with a reduced portion 321 which is journaled in a bearing 322 at the upper end of a stand 323 which is l supported on a table 324.A 'This table also carries the

frame portions

15 and 16 heretofore described which are joined at their lower ends by a Ybase portion 325. The frame port-

ions

325, 15 and 16 are adjustably mounted on the table 324, being movable toward and from the stand 323, this adjustment being for the purpose of providing for different lengths of paper sections which are to be wound in roll form so that as they leave the cutting knives 210 their forward endsmay project toward the winding mechanism into cooperative relation therewith. in accorda-nce with the length of the sections to be wound. This mandrel 320 is formed as a hollow sleeve and has a slot'330 diametrically thereof and extending throughout the major portion of the length of its fiuted portion. Within this mandrel is axially slidable a rod 331, which, within the flut-edv portion of thev mandrel has journaled thereon and held, asby means of a screwv332, a head 333. This head has oppositely disposed projections 334 which extend through the slot 330 and into sockets 335 cut in a pair of ring sections 336 which are formed to ride lengthwise of the fiuted portion o f the mandrel and are held toget er surrounding this fluted portion by means f a spring ring 337 which, is snapped therearound. These ring sections'336 form an ejector, which, when the rod 331 is moved axially toward the free end of the mandrel, calises the paper tube which is wound `thereon to be ejected endwise therefrom. The mandrel is rotated to wind scribed, and the rotation is then stopped and the completed. tube ejected.

For the purpose of rotating the mandrel during the winding and bead-forming operations, a sprocket wheel 340 is carried on the mandrel outwardly of the bearing bracket 322 and over this sprocket wheel passes a Sprocket chain 341 which passes about a sprocket wheel 342 loosely journaled on a shaft 343 extending laterally of the stand 322 near its lower end. As shown this sprocket chain passes about an idle tension pulley 360. The shaft 343 is provided with a sprocket wheel 361 over which may pass a sprocket chain 362 from any suitable source of power, and it is also provided with a sprocket wheel 363 over whichpasses the .sprocket chain 258 by which the strip-feeding, printing and cutting mechanisms are actuated. LThe shaft 343 at one end is provided with a pinion 344 which meshes through

intermediate gears

345 and 346 with a gear 347 fixed to the end of a shaft 348. The shaft 348 carries a face cam 349 on which bears a cam follower 350 fixed to a clutch lever 351. This lever is pivoted on a bracket 352 and at its end opposite to the follower 350 bears between the fianges of a collar 353 to which is fixed one element 354 of a. clutch, the opposite element 355 of which is fixed to the sprocket wheel 342. The clutch element 354 is splined to the shaft 343 and is normally urged axially of this shaft into clutching engagement-with the element 355 by means of a spring 356 surrounding this shaft and bearing between the clutch collar 353 and a collar 357 pinned or otherwise fixed to l the shaft 343. As long as the

clutch elements

354 and 355 are in engagement with each other, rotation of the shaft 343 acts to rotate the mandrel through the sprocket chain 341. When a finished tube is to be ejected from the mandrel, the cam 349 acts to disconnect the

clutch elements

354 and 355 so as to stop the rotation of the mandrel.

The shaft 343 is also utilized to actuate the ejector mechanism. For this purpose one end thereof has fixed thereto a beveled gear 365 which meshes with a beveled gear 366 fixed to a vertically positioned shaft 367. This shaft 367 above a bearing 368 therefor carries a cup shaped clutch element 369. Riding in this cup shaped element is a mating clutch element 370 positioned at the lower end of a shaft 371 in vertical alinement with the shaft 367. The clutch element 370 has slidably mounted therein an axially movable clutch key 372 having a lug 373 on its lower face which may be projected into a depression 374 in the upper face of the clutch element 369 so as to couple 'the element 370 thereto for rotation. This lug 373 is pressed downwardly so as to enter this depression whenever it is permitted to do so, by means of a spring 375 seated in a socket 376 in the element 370 and bearing at its lower end on a portion of the key 372. The element 370 is provided with a reduced upper portion 377 which forms a horizontal annular shoulder 378 on which rides a wedge element 379 which is projectable horizontally toward and from the axis of the shaft 371. lVhen projected toward this axis it presents a wedge face over which a lateral extension 380 of the key 372 rides so as to move this key upwardly against the tension of the springr 375 to remove the lug 373 from the depression 369, thus to unclutch the `shaft 371 from the shaft 367. This unclutching is effected by means of a face cam 381 fixed to the shaft 348 against which rides a cam follower' 393 carried by the inner end of the wedge element 379. The cam follower is held against the cam by means of a spring 382 engaging a pin 383 on this wedge clement and a lug 384 fixed to a portion of the stand 323. The cam 381 is provided with a depression 385 therein and when this is opposite to the cam follower the spring 382 retracts the wedge element, permitting the shaft 371 to become clutched to the shaft 376, but this depression is so short that it permits only a single revolution of the shaft 371 at each clutching engagement, whereupon the shaft 371 is disconnected during the remainder of each rotation of the shaft 348. The shaft 371 is journaled in suitable bearings 386 and above the upper bearing 386 it carries a crank arm 387. Journaled on a crank pin 388 of this crank arm is a connecting rod 389, the inner end of which is pivoted at 390 to a block 391 mounted to slide in ways 392 arranged parallel to the mandrel. This block 391 has fixed thereto the outer end of the rod 331. It will thus be `seen that whenever the shaft 371 is clutched to the shaft 367, the rod 331 is given a single reciprocation which acts to move the ejector ring 336 from its retracted position adjacent to the bearing 332 toward the free end of the mandrel and return. This movement toward the free end of the mandrel acts to eject the tube which has been wound thereon and its retraction permits a succeeding length of paper to be presented and wound.

In order to permit the winding of the sheet material, means for presenting each length of paper thereto have been provided, these means being shown best in Figures 19 and .20. Positioned beneath the fluted por tion of the mandrel is a vertically slidable rod 400 which carries at its upper end a head 401. This head has pivoted thereto a pair of arms 402 which have journaled at their upper ends rollers 403. These arms 402 are pressed toward each other as far as is permitted by stops 404 carried by the head 401 by means of a spring 405 fixed at its opposite ends thereto. The forward end of after which the rollers are lowered to their strip-receiving position. This raising and lowering of the rollers is effected by means .of a cam 406 having a cam groove 407 in one side face in which rides a follower 408 carried at'the lower end of the rod 400. This ca1n406 is fixed to the shaft 348.

Means is also provided for holding theA strip to be wound down against the rotating mandrel at the same time that the rollers 403 are moved upwardly. As shown this means comprises a segmental shaped cap 412 which is Vfixed to a bracket 413 carried byA a vertical rod 414 slidable. in

bearings

415 and 416 fixed to the stand 323. A portion of this rod 414 intermediate vits ends lis of enlarged diameter and threaded as at 417 and'on this threaded portion is carried a pair of knurled adjusting nuts 418 and`419 which may be fixed in adjusted position by means such as set screws passing radially therethrough and having their inner ends engag.

l ing the threaded portion 417. Between the nuts 418 and 419 is positioned a sleeve 420 slidable on thethreaded portion and this sleeve is normally held pressed against the upper nut' 418 by means of a spring 421 reacting between its lower face and the nut 419. This sleeve 420 is provided with a pair of laterally extending pins 422 with which engages the bifurcatedand slotted extremity 423 of a lever 424 fulcrumed at 425 ona bracket 426 carried by a horizontalv frame portion 427 of the stand 323. The inner end of this lever 424 passes through a slot 409 in the rod 400 beneath the head 401. When the head 401 lowers to lower the, rollers 403 from cooperative relation with the mandrel, the lever 404 iscontacted and rocked in a direction to raise the cap member 410 away from the mandrel, while when the rollers 403 are raised to present the strip of material to be wound to the rotating mandrel, the cap 410 is allowed to descend by the weight of the parts into cooperative relation with the mandrel. This cooperative position of the rollers 403 and the cap isA y shown clearly Vin dotted lines in Figure 21,

4while the inoperative position of these parts is shown in full lines. 4

The strip of paper lto be wound extends somewhat beyond the free end of the manspring 449 (see Figure 6).

drel 4321 and means areprovided for forming this extended portion into a bead which i .forms an internal annular shoulder preventing unrolling of the paper after it is ejected from the mandrel land also serving as a ledge against which the end coin ofa stack positioned within the tubular container formed by the roll may engage. This bead- Ving device is shown in ldetail in Figures 3,

16, 17, 18 20, and 22 to 25. Beyond the free end of the mandrel the stand 323 is pro-y vided with an upwardly projecting post 440 (Figures 2, 6 and 17) to which is fixed a bracket 441 having a guideway 442 at its upper end in which is slidably mounted a rack bar 443, this rack bar moving in a plane lengthwise of the mandrel. Meshing with the teeth of .this rack bar is a gear sector 444 (Figure 3) fixed to the upper end of a rock shaft 445. The lowerend of this rock shaft is formed with Ia cam follower 446 (Figures 6 and 17) carried on a crank arm 447 and this follower is held against a cam face on a cam 448 carried by the shaft 348 bv means of a 443 carries at one end an upwardly-extending post or pin 450 (Figures 18, 22 to 25). Pivoted tothe upper end ofthe post 440 is afframe 455 (Figures 2 and 18), one side 456 of which is prolonged beyond the pivot and is extended downwardly `as at 457 to form a head 458 through which is passed a bolt 459. A spring 460 surrounds this bolt and bears between the head 458 and aspring seat portion 461 formed on the post 440. A. nut 462 on vthe inner end ofthe bolt forms rocking motion of the frame 455 in one direction. At the outer end of this frame A455 is carried a rectangular bar 465 which serves as a sliding guide for a carriage or block 466. As shown best in Figures 20 and 22 to 25, this carriage 0r block is provided with a pair of laterally extending

lugs

467 and 468 between which the post or pin 450 extends, these lugs being spaced apart suiiiciently to permit a limited amount of motion of the pin 450 with the rack bar 443` of the tube and prevent it from being derformed Ioutwardly While its end is being beaded.V This carriage'466 carries a beadforming tool 471. This tool is provided at one end with a hooked portion 472 extending laterally from a shank 473, which as Y the shank portion is pressed against the end Aof the tube actsto turn this end inwardly lengthwise of the tube and then outwardly The rack bar `an adjustable stop to limit the extent of lll) wise position of the tool thatV the extended Y shank portion 480 overbalances the hook portion 472, but when the frame 455 is rocked.

downwardly into the position shown in Figures 18 and 25, this shank portion 480 strikes upon the upper edge of a guide piece 481 fixed to the bracket 442 so that it is rocked upwardly as far as is permitted by the engagement of its lower face against the upper face at 482 of the carriage block. lVhen in this position, assuming that the pin 450 is suiiiciently near to the lug 467. a latch hook 485 pivoted at 486 to theside of the carriage block is permitted to engage over the shank portion 473 of the tool so as to hold it in this position even after the frame 455 has been raised so that the shank portion 480 is out of contact with the plate 481. This latch 485, as shown best in Figure 3, is normally urgedinto its tool engaging position by means of a torsion spring 487 surrounding its pivot screw 486 by which it is connected to the carriage block 466. It is provided, however, with a laterally extending lug 489 which extends into the path of motion of the pin 450 as it moves with the rack bar 443.

lVhen the latch 485 is in engagement with the tool and the frame 455 is upwardly rocked into the position shown in Figure 22, the hook of the tool is in position so that when the carriage and the tool are movedY toward the end of the mandrel, it is in position, as in Figure 23, to engage and crimp inwardly the end of the tube into the condition shown in Figure 10 at 475. In this position, however7 the hook 472 engages the inner portion of the crimped or beaded end and could not be retracted by withdrawal of the carriage 466 without damaging the bead. For this reason as the rack bar 443 is retracted, it first engages the lug 468 and on its continued rearward motion pulls the latch 485 out of Contact with the tool, as shown in Figuren24, whereupon the heavy end 480 thereof is permitted to rock the hooked end of the tool toward the axis of the mandrel and out of Contact with the bead. Further retroactive motion of the rack bar 443 brings the pin 450 into contact with the lug 468, thus imparting a positive withdrawal movement to the carriage 466, and carries the tool therewith away from the end of the tubeL The tool carriage slide 465 is held upwardly in cooperative relation to the tube end during this time by reason of the fact that the forward endrof the frame 455 extends over the head 401 of the paper presenting mechanism and is contacted by a spring plunger 490 thereon.

Then the tool carriage has been retracted to bring the tool out of cooperative relation with the tube and the paper presenting means is lowered to receive the forward end of a succeeding length, the guide bar 465 is allowed to fall into the position shown in Figures 18 and 25, this action being facilitated by the action of the spring 460. In this position the tool shank 480 contacts with the guide plate 481 as before described, and is returned to its operative tilted position where it is engaged by the latch 485 as soon as the pin 450 has moved farwardly to an extent suiiicient to permit this action prior to the next forward motion of the tool for operation on the succeeding tube. lVhen in this lowered position, as shown in Figures 18 and 25, no obstruction is offered by any of the parts to the ejection of the finished tube over the mandrel end. The tube is thus thrown oit from the mandrel over the bead-forming mechanism and is received by any suitable conveyor means as at 495 (see Figure 6) by which it is conveyed away from the machine.

In order to insure the proper relation of the mandrel to the lengths of the paper to be wound so that the lengths mayY be wound with their edges even, provision is made for adjusting the stand 323 on the table 324. As shown in Figures 1, 2 and 6, the table 324 has a plurality of lugs 500 upstanding therefrom between which the stand 323 is positioned. Adjusting bolts 501 are threaded through these lugs, the inner ends of the bolts bearing on the outer face of the base portion 502 of the stand. These lugs 500 are spaced sufficiently to permit the desired range of angular, transverse and longitudinal adjustment of the stand in any direction in a substantially horizontal plane therebetween. The face portion 502 may be slightly tapered upwardly so that the pressure of the bolts 501 thereon tend to clamp the stand against the table.

Having thus described an embodiment of this invention it should be evident to those skilled in the art that various modifications and changes might be made therein without departing from its spirit or scope as defined by the appended claims.

I claim: Y

1. A machine of the class described comprising means for feeding a strip of indeterminate length, means for cutting inwardly from one edge of the strip at spaced points, means for then severing the strip laterally in such relation to said cuts as to form lengths each pointed at its forward end in the direction of travel of the strip, a winding mechanism, means for successively presentthen ejecting the tube from said windingl mechanism.

2. A machine of the class described comprislng ymeans for feeding a strip of sheet material, means for cutting inwardly from' one edge thereof at intervals at an oblique` angle to the length of the strip, means for severing the sheet into lengths along oblique lines intersecting the inner ends of said cuts and deining therewith triangular cutouts spaced along said edge, means for removing said cutouts, and means for forming each of said lengths' into a tube.

3. In a tube forming machine, means for winding a strip into tube form, and a hook movable against one end of the tube to turn said end inwardly to form a circumferential bead, and then movable toward the axis of the tube so that it may be withdrawnwithout hindrance from said bead.

4. In a container forming machine, means for rotating a tube about its axis, means for moving from and pressing against the end of the tube a tool shaped to turn said end inwardly to form an internal circumferential bead thereon as said tube is rotated, and means for moving said tool toward the axis of the tube to free it from 'said bead before its retractive movement.

of the tube to turn said end to form a cirv 5oy v as it is rotated by the rotation of said man-4 cumferential bead and orretracting the tool after the bead 'has been formedmeans for causing said tool to move out of aline 'ment with said tube at each retraction, and

means then acting to eject the tube lfrom said mandrel.

6. In a machine of the class described, a mandrel, a tool havin a hooked portion, means for rotating said mandrel and for winding av strip thereon to form a tube, means for moving said tool to press its hooked portion against the end of the tube drel, thereby to turn said end to form a circumferential bead, and for thereafter terial to said man rel to be rolled into tu? bular form by its rotation, a tool, means for moving said tool toward and from one endof the tube tovform over said end in a man-4 ner to prevent unrolling of the tube as the tube rotates and then to retract '-thererom, means for stopping the rotation of said mandrel after the tube end has been so formed over, and means for ejecting the tube from said mandrel while said mandrel is stopped preparatory to the presentation of a succeeding length of sheet material thereto.

8. In a machine of the class'described, a mandrel, raising and lowering means for successively presenting lengths of sheet .material in` position .to be wound in'tubular form on said mandrel, a guide member movable bodily with said presenting means, a tool carriage movable on said guide member toward and from said mandreha tool rockable on said carriage and normally biased to an inoperative rocked position, a latch for holding said tool locked' inoperative positlon, means acting to move said carriage toward said mandrel when said guide member is in raised position and a tube has been formed on said 'mandrel tocause said tool to turn the end of said tube to form a bead thereon, and then to release said latch and permitsaid tool to swing into inoperative position and then to retract said carriage fromsaid mandrel, means acting on the subi sequent lowering of said presenting means to return said tool to'latched position, and means acting while said guide member, carriage and tool arein lowered position for ejecting the beaded tube from said mandrel.

9. In a machine of the class described, a mandrel comprising a sleeve having a trans- 7 verse slot therethrough, a rod slidable axially within said sleeve, a head on said rod having portions extending through said'slots, a sectional rin-g surrounding said sleeve and hav ing sockets to receive the ends of said extending portion, `and means orholding the sections of said ring in assembled relation whereby sliding motion of said rod imparts sliding motion to said ring.

10. In a machine of the class described, a mandrel comprising a sleeve having a transverse `slot therethrough, 4 a rod slidable -axially within said sleeve, a head on said rod having portions extending through said slots, a sectional ring surrounding said sleeve and having sockets to receive the ends of said extending portion, and a spring ring surrounding said ring sections` for holding them in assembled relation.

11. In a machine of the class described, a

mandrel on which lengths of sheet material may be wound, means for feeding the lengths successivelyA to said mandrel, and means whereby the mandrel may be adjusted angularly relatively to said feeding means.

12. In machine of theclass described, a mandrel on which lengths of sheet material may be wound, means for. feeding the lengths successively to said mandrel, and means whereby the mandrel may be adjusted axially relatively to said feeding means.

13. In a machine of the class described, a

, mandrel on which lengths of sheet material may be wound, means for feeding the lengths successively to said mandrel, and means whereby the mandrel may be adjusted angularly and axially.

14. In a machine of the class described, a mandrel on which lengths of sheet ma'terial may be Wound, means for feeding the lengths successively to said mandrel, and means whereby the mandrel may be adjusted in any direction in one plane.

15. In a machine of the class described, a mandrel on which lengths of sheet material may be wound, a stand for supporting said mandrel, a table for carrying said stand, means carried on 'said table for feeding lengths of sheet material successively to said mandrel, and means for adjustably clamping said stand to said table in proper relation to said feeding means.

16. In a machine of the class described, a

mandrel on which lengths of sheet material may be wound, ya stand for supporting said mandrel, a table for carrying said stand, means carried on said table for feeding lengths of sheet material successively to said mandrel, spaced lugs extending from said table between which said stand is positioned, and adjusting bolts threaded through said lugs and bearing against said stand.

17. In a machine of the class described, a

JOSEPH N. FRANCIS.