US2500408A - Strip feed mechanism for paper cup making machines or the like - Google Patents

Description

March 14, 1950 L. M. HARVEY 2,500,408

STRIP FEED MEcHANIsM FoR PAPER cuP MAKING MACHINES 0R THE LIKE 1v, 1942 12 sheets-sheet 1 Original Filed Deo.

arch M, 1950 L. M. HARVEY 2,500,408 4 STRIP FEED MECHANISM FOR PAPER CUP MAKING MACHINES 0R THE LIKE Original Filed Deo. 17, 1942 l2 Sheets-Sheet 2 /frenfor' /7 E ,X60 7, /7Qr Vey March M, w50 2,500408 L. M. HARVEY STRIP FEED MECHANISM FOR PAPER CUP MAKING MACHINES OR THE LIKE Original Filed Dec. 17. 1942 12 Sheets-Sheet 3 March 14', 1950 L. M. HARVEY STRIP FEED MECHANISM FOR PAPER CUP MAKING MACHINES OR THE LIX 1'7, 1942 .l2 Sheets-Sheet 4 Original Filed Dec.

f mm/ maf@ u a m MN@ w m@ March 14, 1950 L. M. HARVEY 2,500,408

STRIP FEED MECHANISM FOR PAPER CUP MAKING MACHINES 0R THE LIKE' Original Filed Dec. 17. 1942 l2 Sheets-Sheet 5 March 14, 195o L. M. HARVEY 2,500,408 STRIP FEED MECHANISM .FOR PAPER CUP f MAKING MACHINES 0R THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 6 eo M. Harn/cy @www 2,500,408 ECHANISM FOR PAPER CUP MAKING MACHINES OR THE LIKE Original Filed Deo. 17, 1942 March M, 1950 l.. M. HARVEY STRIP FEED M 12 Sheets-Sheet 7 14, 1950 M HARVEY 2,500,408

STRIP FEED MECHANISM FR PAPER CUP v MAKING MACHINES 0R THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet 9 A75 w f7.9. /2

/eo 7. Ham/ey W70/wey H4, i950 M.- HARVEY 2,500,408

STRIP FEED MECHANISM FOR PAPER CUP MAKING MACHINES OR THE LIKE Original Filed Dec. 17, 1942 12- Sheets-Sheet 10 v60 M Wam/gy m fw@ March M, 1950 L. M. HARVEY 2,500,408

STRIP FEED MECHANIS 0R PAPER CUP MAKING MACHINES THE LIKE Original Filed Dec. 17, 1942 12 Sheets-Sheet l1 /fg w March M, 1950 L. M. HARVEY 2,500,408

STRIP FEED MEcHANIsM EOE PAPER CUP MAKING MACHINES 0E THE LIKE Original Filed Dec. 17, 1942 l2 Sheets-Sheet 12 #fre/Wr Patented Mar. i4, 1950 UNITED STATES STRIP FEED MECHANISM FOR PAPER CUP MAKING MACHINES R THE LIKE Leo M. Harvey, La Canada, Calif.

8 Claims.

This invention relates to a strip feeding mechanism for paper cup making machines, or the like, and it is a. general object of the invention to provide a simplified, improved and highly eflicient mechanism for handling or feeding strip material such as strip paper to be acted upon or handled by a cup making machine, or the like.

This application is a division of my cd-pending application entitled Machine for making paper cups filed December 17, 1942, Serial No. 469,306 (now Patent No. 2,435,808).

Another object of this invention is to provide a paper feed mechanism for a paper cup machine, which mechanism may be easily adjusted to increase or shorten the extent of paper advanced or fed for each operation of the machine and which may be readily adjusted to handle paper strips of different widths and thus serve in forming various sizes of cups at will.

Another object of my invention is to provide a feed for a paper handling machine, such as a paper cup making machine, so located and related to the other parts of the machine as to be readily accessible and located so that it is removed from parts which might soil the paper or carry lubricants that would soil the paper.

The various objects and features of my invention will be fully understood from the following detailed description of a typical preferred form and application of my invention, throughout which description reference is made to the accompanying drawings, in which:

Fig. 1 is a front elevation of the machine provided by this invention. Fig. 2 is a side elevation of the machine showing the paper supply and feed means. Fig. 3 is an enlarged plan elevation of the machine with the most elevated parts appearing in horizontal cross section. Fig. 4 is an enlarged fragmentary vertical detailed sectional view illustrating the die means in the operated condition and showing adjacent parts of the machine. Fig. 5 is a view similar to Fig. 4 illustrating the cup ejecting or stacking means, a portion of the paper feed means, the scrap cutting means, etc. Fig. 6 is an enlarged longitudinal detailed sectional view of the main clutch of the machine. Fig. 6s is an elevation View of one of the `cams of the clutch shown in Fig. 6. Fig. 7 is a transverse detailed sectional View taken as indicated by line 7 1 on Fig. 6. Fig. 8 is an enlarged longitudinal detailed sectional view of a sprocket and clutch assembly embodied in the paper feed means of the invention. Fig. 8a is a fragmentary transverse detailed sectional view of the free running clutch means of the structure shown in Fig. 8.

Fig. 9 is an enlarged fragmentary vertical detailed sectional view of a portion of the paper feed means. Fig. 10 is an enlarged fragmentary horizontal detailed sectional view illustrating the cup transferring means. Fig. 11 is a plan View of certain elements of the cup transferring means showing the two positions of the cups during the stage transference and illustrating the different positions or" the transferring elements. Fig. 12 is a fragmentary vertical detailed sectional view illustrating a portion of the-means for actuating the cup transferring elements. Fig. 13 is an enlarged fragmentary vertical detailed sectional View showing the mechanism for operating the cup transferring means. Fig. 13a is a vertical detailed sectional View of the adjustable connection between the walking beam and the chains. Fig. 14 is an enlarged fragmentary vertical detailed sectional view illustrating the several means for operating the dies. Fig. 15 is an enlarged fragmentary vertical detailed sectional view taken as indicated by line I5-I5 on Fig. 14. Fig. 16 is an enlarged fragmentary vertical detailed sectional View showing the dies in the position preceding the bead forming operation. Fig. 17 is a View similar to Fig. 16 showing the dies in position at or near the completion of the bead. Fig. 18 is a diagrammatic View illustrating the paper feed means and the cup transferring means. Fig. 19 is a fragmentary diagrammatic view of the paper feeding means. Fig. 2O is a vertical detailed sectional view of the flute forming die removed from the machine. Fig. 21 is a View similar to Fig. 20 illustrating the ute forming punch. Fig. 22 is a bottom elevation of the flute forming die. Fig. 23 is a plan elevation of the iiute forming punch. Fig. 24 is a vertical sectional view of the scrap cutting means apart from the other elements of the machine with certain of the members in side elevation. Fig. 25 is an enlarged plan view of a cup blank after the flutes have been formed therein. Fig. 26 is an enlarged side elevation of the blank provided with the flutes. Fig. 27 is a side elevation of the cup following the flute forming, cup shaping and ironing operations and Fig. 28 is a fragmentary side elevation of the completed cup.

The cup forming machine embodying the present invention may be said to comprise, generally, a supporting and housing case I il, a power means or drive means Il for driving or operating the various mechanisms of the machine, a paper feed means I2, a die mechanism I 3 which receives the paper from the feed means I2 and cuts it into blanks and forms paper cups therefrom, a cup 3 transferring and stacking means ffl for withdrawing the completed cups from the mechanism I3, and scrap handling means I5.

The case lil supports the various elements of the machine and houses portions of the driving means H and associated parts. The case Il) may be a generally square or rectangular upright box-like structure. The opposite sides of the case l are provided with access openings closed by hinged doors i6. The top of the case Ill is flat and horizontal to carry certain elements of the paper feed means l2, the die mechanism i3, etc. The walls of the case are closed and sealed to prevent the escape of the lubricant for the driving mechanism. The lower portion of the case ill may be provided with a suitable base il adapted to rest on the oor or other support.

In the preferred form of the invention the machine is entirely self contained and embodies its own power means. In the construction illustrated the power means includes a suitable eleotric motor M mounted on a bracket E3 secured on a wall of the case 1B. The motor M is mounted on, what I will term, the rear side of the case It. The drive means ll is characterized by a single crank shaft I9 and all of the working parts of the machine are driven from this single crank shaft. In the preferred construction illustrated, the motor M is mounted to have its shaft horizontal and the crank shaft i6 is rotatably mounted in the lower portion of the case lll to be below the shaft of the motor M and to extend at right angles to the motor shaft. The crank shaft I6 is rotatably supported by suitable spaced bearings 2Q in the case. VA clutched worm drive is provided between the motor M and the crank shaft i9.

The clutched drive includes a flanged mounting plate or carrier 2l secured to the rear wall of the case lil by screws 22 and having a hub Q 23 which projects freely through an opening 2d in the case wall, see Figs. 6 and 7. rIhe hub 23 has an inward extension 25 which projects some distance into the case l0. A horizontal shaft 26 extends longitudinally through the hub 23 and its extension 25 and continues outwardly from the case It. An anti-friction bearing 2l in the carrier 2l and an anti-friction bearing 28 in the inner part of the extension 25 support the shaft 2li for free rotation. The bearing El has shouldered engagement in the carrier 2l and is retained by a ring 29 secured to the carrier 2l by screws 33. A nut 3l is threaded on the shaft 26 at one side of the bearing 2l so that the shaft 26 is held against endwise movement. A nut 33 is provided on the kinner extremity of the shaft 26 at one side of the bearing 28 and a bushing or spacer 34 is provided on the shaft at the other side of the bearing 25 `and these elements may assist in holding the shaft against endwise movement.

A worm 35 is xed or keyed on the shaft 25 at the end of the spacer 34 and meshes with a worm wheel 3% keyed to the crank shaft i9. The under side of the hub extension 25 is open to pass or admit the worm Wheel 36. The worm gearing operatively connects the clutch shaft 26 with the crank shaft i9.

The power means or drive means 'li further includes a pulley 3l rotatably supported on the projecting portion of the clutch shaft 26 at the exterior of the case i0. A belt 38 operates over the pulley 37 and a pulley 39 fixed on the shaft of the motor M so that the pulley 3l is driven by the motor. The pulley 31 may be propertioned to serve as a ny wheel and has a long hub i9 which surrounds the projecting portion of the shaft 26 in spaced relation thereto. An antifriction bearing 4i rotatably supports the inner portion of the pulley 3l on the clutch shaft 2t. The bearing lll has shouldered engagement in the pulley 3l and has its inner end engaged against the flange 32. An anti-friction bearing 42 is mounted on a reduced outer end portion of the clutch shaft 26 and rotatably carries the outer part of the pulley hub lill. The inner side of the bearing 42 engages against a shoulder on the shaft 26 and a nut 43 is provided on the end of the shaft to retain the bearing t2 and to assist in preventing endwise movement of the pulley 37. A cap 4d may cover the nut A3. It is preferred to provide a sealing means or sealing assembly l5 on the above mentioned ring 2g to seal between the ring and the hub of the pulley 3l to retain lubricant within the clutch assembly and to prevent the entrance of dirt into the assembly.

The clutch of the drive means il includes a sleeve i6 freely slidable on the shaft 26 and located between the nut 3l and the worm 35. An external annular groove il? is provided in the sleeve llt. Fork ymeans is provided for shifting the sleeve t6 back and forth and includes a shaft or pin i8 `turnably carried by spaced lugs 49 on the upper side of the hub extension 25, see Fig. 7. A fork 5D is pivotally supported by the pin t8 between the lugs 4g and projects downwardly through an opening 5l in the upper wall of the extension 25. A yoke 52 is located between the arms of the fork and is pivot-ally secured thereto by pins 53. The yoke 52 engages in the groove il of the sleeve t6.

Manual means is provided for effecting longitudinal shifting of the sleeve 46. A clutch y'handle or lever 54 is mounted on a side of the case Hi at a conveniently accessible point near the upper end of the case, see Fig. 1. A suitable mechanical linkage 55 operatively connects the lever 54 with the fork 5t. It will be seen how manual operation of the lever 54 will result in axial shifting of the sleeve 46 back and forth along the clutch shaft 26.

The clutch means further includes an assembly of friction discs 56 arranged within the'outer portion of the pulley hub 4o and an operative connection between the shiftable sleeve Il@ and the disc assembly for controlling or operating the latter. The discs 56 are disposed within a tubular shell 51 fixed in the pulley hub 59 and are engaged between spaced collars 58 secured on the shaft 26. Alternate discs 56 are'keyed or fixed to the shaft 26 and the intervening discs 56 are keyed or fixed -to the shell 5l. The discs 56 'are adapted to freely pass one another without engagement or appreciable friction when the clutch is released The means for operating or controlling the clutch dise assembly 56 includes a sleeve 5S freely surrounding the shaft 26 within the pulley hub llt. An inner sleeve v611| is spaced within the sleeve 59 and is secured to the shaft 26 by a pin 6i or other means. The inner sleeve 6D carries one or more pivoted dogs 62 which are operable to compress the clutch disc assembly 56 to provide for the transmission of rotation between the pulley 3l and the clutch shaft 26. The dogs 62 act against the inner collar or ring 58. Outward movement of the outer sleeve 59 serves to actuate the dogs v62 toprovide the clutching engagement at the discs 56. Pins 63'project inwardly from the outer sleeve 59 and are adapted to have camming engagement with the dogs 52 to pivot or actuate the dogs when the sleeve 5s is shifted outwardly.

An operative connection is provided between the fork operated sleeve et and the dog actuating sleeve 59. The clutch shaft 26 is bored from its inner end to have a longitudinal opening Gil. A shift pin d5 is shiftable longitudinally in the opening til. The shift pin 65 serves to transmit movement from the sleeve l5 to the sleeve 59. A longitudinal slot 66 is provided in the shaft 26 to communicate with its opening 6s and a pin '6l is engaged in or secured to the sleeve 13G and engages with 0r is connected to the shift pin 65 to connect the yoke and shift pin. A longitudinal slot '5S is provided in the clutch shaft 2t at a point spaced outwardly from the bearing Il! and a pin B9 is secured to or carried by the outer shaft sleeve 59 and operates in the slot 68. In practice the pin Se may pass completely through the slot and through an opening in the shift pin 65. The pins 6l and 69 have sufficient longitudinal movement in their respective slots Sii and GS to provide for movement of the sleeve 59 between the position where the clutch is released and the position where the clutch disc assembly 55 is engaged to transmit rotation from the pulley 3l to the clutch shaft 26.

It is preferred to incorporate a brake means in the clutched drive so that the mechanism may be quickly stopped when the clutch is disengaged. This means may include a tubular brake ring 'lil secured within the hub 23 and having shouldered engagement in the hub. The brake ring lll has a tapered internal surface. The sleeve d5, which surrounds the clutch shaft 2B and which is oper- -ated by the fork and yoke assembly, carries a tapered or frusto-conical brake part 'il which is engageable in the ring to brake movement of the machine parts.

It will be seen that when the clutch handle or lever 5d is moved in one direction the sleeve 46 moves outwardly so that the shift pin 65 and outer sleeve 59 likewise move outwardly and upon outward movement of the sleeve 59 the pins 63 actuate the dogs 62 to engage the disc assembly 56 for the transmission of rotation from the pulley 3l to the shaft 2t and thus drive the crank shaft ig. Upon movement of the clutch lever 513 in the other direction the sleeve lit, the shift pin (i5 and the sleeve 5i) are moved inwardly to release the disc lassembly 56 and thus disengage the clutch and the brake part ll is brought into cooperation with the brake ring 'it to stop movement of the machine parts. It is to be understood that a suitable switch means is provided for the control of the motor M.

The feed means l2 operates to intermittently advance or feed a web of paper or other material to the mechanism lf3 which cuts the cup blanks therefrom and then forms the blanks into the completed cups. The feed means l2 embodies several important features of the invention. For example, it embodies means for supporting or employing a large-capacity supply roll 'l2 of waxed paper, or the like, and automatically intermittently lwithdraws a predetermined length ofthe paper from this supply and delivers it to the cutting and forming mechanism i3 in timed relation thereto. The feed means l2 is readily regulable to advance any desired amount or length of the paper or material to provide for the making of cups throughout a `very wide range of cup sizes. This adjustment, together with appropriate changes in the dies of the mechanism i3, adapts the single machine for the manufacture of a wide range of containers or cups. The feed means i2 operates in timed synchronism with' the mechanism I3 and is positive and eflicient in its feeding of the paper as the supply roll reduces in diameter until completely exhausted.

The feed means i2 includes a structure for supporting a supply of the material or paper of which the cups are to be formed. This structure may include a support or bracket i3 mounted on the front o-f the case ID and carrying a pair of forwardly projecting rigid arms 74. A horizontal shaft 'l5 extends between and is supported by the outer portions of the arms lll. The shaft l5 serves to carry the supply roll l2 of paper.

The roll l2 comprises a single continuous web or length of waxed paper or other material of Y which the cups are to be formed. As illustrated, the shaft 'l5 is adapted to carry a large supply roll l2. Adjustable spools 'It are provided on the shaft l5 to center and support the roll l2, Fig. 3. It is to be understood that the roll l2 is readily replaced when exhausted. The supply roll l2 is positioned so that the web or strip S of the paper passes from the upper portion of the roll toward the front of the case l0.

Idler means is provided to prevent the development of slack in the strip S as it passes from the roll l2 to the feed means proper of the machine. A pair of levers or arms ll is pivotally supported on or near the end portions of the shaft l5 and projects rearwardly toward the case ill. A shaft 18 extends between the end portions of the arms l'l and supports a freely rotatable roll 19. This roll H9 is in the nature of an idler or tensioning roll. The paper strip S passes down under the roll 'I9 and continues back up to the feed means proper of the machine. It is preferred to spring load the arms ll so that a proper tension is maintained on the strip S and so that the paper will not buckle or develop excessive slack. In the construction illustrated leaf springs 8i) are secured to the bracket arms M and bear downwardly on the arms ll so that the idler roll 'i9 is constantly urged downward.

The feed means l2 further includes a pair of spaced feed rolls 8l and 82 for advancing the strip S across the top of the machine, see Figs. 9 and 18. Mounting means or brackets 83 and BLS are provided on the front and the rear walls, respectively, of the case IB adjacent the top of the case to carry the feed rolls 8l and 82 and the associated parts. The feed rolls 8l and 82 are carried by horizontal shafts which are rotatably supported by suitable bearings 85 on the brackets 83. It is preferred to face or cover the feed rolls 8i and 82 with rubber or friction material to assure the positive advancek of the paper strip S. In accordance with the invention the feed rolls Si and 32 are connected for simultaneous intermittent rotation. A sprocket 86 is provided on an end of each feed roll 8i and 82 and an endless chain Sl operates over the two sprockets 88. The chain El is operated or driven by the power means by a drive to be described below. A roll 88 is located above the forward feed roll 8i to cooperate with the paper strip S to maintain the strip in frictional cooperation with the feed roll so that the strip is positively advanced. The roll SS is carried by a shaft 89 which is eccentric with respect to its end portions Sil, see Fig. 18. These end lportions S are turnably mounted in suitable ascencei bearings 9i on the forward bracket 83 and a lever or handlev 92 is xed to one end of the shaft 83 so that thev shaft may be manually turned. The operator may move the roll 88 into and out of cooperation with the strip S by merely shifting or operating the handle 92. When the handle 92 is moved in one direction the roll 86 is lowered to press against the strip S and thus maintain the strip in engagement with the forward feed roll 8l to be advanced by the same. When the handle 92 is turned in the other direction the roll Sii is raised from the strip S and the strip is no longer driven or advanced by the roll 8i. Thus, the movably supported roll 8S forms a convenient means for initiating and stopping the advancement `of the paper strip S as required during operation of the machine. A roll S3, similar to the roll 38, is provided above the rear feed roll 32. The shaft of the roll 93 is carried by suitablebearings Sil on' the rear bracket B4. The roll 93 has its axis spaced forwardly from the axis of the rear feed roll 92 so that it is particularly eiective in maintaining the paper strip S in engagement with the facel of the roll 82. It is preferred to tace or cover the rolls 88 and S3 with rubber or friction material. The rear driving roll or feed roll S2 advances or ejects the scrap paper remaining after the cup blanks have been cut from the strip S by the mechanism i3.

The machine preferably includes means for aiding in removing or withdrawing the paper strip S from the supply roll l2. r.his means includes a pair of arms 95 pivotally supported by a pin 95 secured to the forward bracket t3. The arms t5 project forwardly and downwardly tol pass above the center of the supply roll i2 and are preferably curved upwardly so that they do not interfere with the supply roll. A horizonte-i pin or shaft 9i is carried by the outer ends or the arms 95 and a roll 98 is freely rotatable on the shaft Sil. The roll $38 is adapted to engage or bear downwardly against the periphery of the. supply roll l2 and is faced with rubber or iriction material to have driving engagement with the outermost convolution of the roll. The drive for the roll 98 comprises a fiat rubber belt operated over the above described roll. SS 4and the roll d8. There may be a single centrally disposed lbelt 59 engaged in annular grooves in the rolls 8S and 98. The belt B9 passes over an idler pulley l on the pin .Qt and engages over a second idler i9! spaced 'forwardly from the pulley 63. The rubber belt QB is extensible and contractible to compensate for changes in the angular position of the arms 95 as the diameter of the supply roll l2 grows less during the operation of the machine. It will be seen that the forward feed roll vSi drives the adjustable roll 88 and that the belt Si) operatively connects the roll 38 with the roll 88 so that the roll 98 is effectively driven. rShe rotating roll S8 assists in rotating the supply roll 'i2 and in advancing the paper strip from the surface of the supply roll.

The drive for the feed means i2 is characterized by its adiustability whereby the material strip S may be advanced any selected or required distance during each phase of operation. The drive for the feed means includes a walking beam m2 having one end supported by a pivot pin |03 fixed on a Wall of the case Ill, see Fig. 13. rlhe walking beam |32 is arranged within the lower portion of the case l0 and is spaced above the crank shaft 19. The walking beam it? extends in a direction 'transverse of the crank shaft I9. A connecting rod fl has a bearing 05 engaged on the intermediate crank 65 of the crank shaft I9 and has its other end connected with the walking beam m2 by a pin i6?. During each revolution of the crank shaft i9 the walking beam 182 swings or pivots up and down. A pair of flexible elements or driving chains U33 is connected with the walking beam m2 and extends to a compound sprocket 469 positioned below and adjacent the feed chain 8l.

It is a feature of the construction that the connection of the chains m8 with the walking beam m2 is adjustable along the beam to vary the stroke or movement o the feed chain 37 and, therefore, vary the extent oi advancement or the strip S. A longitudinal slot l it of substantial length is provided in the upper portion oi the walking beam 92. A block iii is shiftable along the slot and carries a yoke i i2 which projects above the beam. The engagement of the block ill in the slot H0 holds the block against turning. A pin H3 passes through openings in the yoke H2 and carries an equalising bar lill. The lower ends of the spaced chai-ns 558 are anchored to the opposite end portions of the eoualizing bar ill-l.

Accurate and conveniently operable means is provided for adjusting the block IH along the slot Hil to shift the point of connection oi the chains $68 with the beam 152, moving this point of connection toward or away from the axis of the walking beam M52 as required to regulate the stroke or advancement of the strip S. This adjusting means includes a screw l i5 extending longitudinally through the slot il@ and having screw threaded engagement in an opening in the block irli. The screw H5 is engaged in an opening liti in the walking beam |02 to be held against longitudinal movement and has a head l l'i on its outer end exposed at the end of the beam H12 for ready engagement by a wrench or the like. A lock nut liti is Vthreaded on the screw H5 to normally lock or hold the screw against rotation. The screw head l il and the nut l'l are located to be readily engageable by a wrench or similar tool inserted through an opening in the rear wall of the case it. it will be seen that upon loosening the nut i IB the screw H5 ymay be rotated to shift the block lll toward or away from the pivotal axis of the walking beam 182 to shorten or lengthen the stroke or movement imparted to the chains 538.

The compound sprocket 09, which is best illustrated in Fig. 8 of the drawings, is a clutched sprocket for producing movement of the chain 8'! when turned by downward movement of the chains it@ but which imparts no motion to the chain 8'! during the return stroke of the walking beam H12 and its chains HI8. The sprocket lid comprises two bolted together sections H9 provided at their outer ends with sprocket teeth 120. The chains it are trained over the series of teethy Z and are anchored or iixed to the sprocket H9 as at 2l in 18. The sprocket sections H9 are tubular having a central longitudinal opening 22 which receives a horizontal shaft lEIi with substantial clearance. The sprocket |69 is supported on the shaft 3'23 by anti-friction bearings 12d so that it may have free rotation on the shaft. A central internal annular groove 25 is provided in the sprocket sections H9 and a ring 25 is iixed in thegroove. The ring [2B has a series of annular internal pitched faces 27, each termihating in van abrupt shoulder |28. A collar 429 is keyed to the shaft i23 within the sprocket |99 and has an annular enlargement or flange which extends into the above mentioned groove |25. The flange |30 is provided with a finished cylindrical concentric `peripheral surface. A ball or roller member |31 rides on each pitched surface |21 of the ring |23 and the members are c0- operable with the periphery of the flange |30.

` Springs |32 are engaged between the shoulders |28 and the members 13| to yieldingly urge the members to ride down the faces |21 into cooperation with the peripheral surface of the flange |30. When the sprocket |09 is turned in a clockwise direction, as indicated by the arrow in Fig. 18, the members |31 are caused to ride inwardly on the surfaces |21 and thus almost immediately bind between the surfaces |21 and the periphery of the flange |30 to transmit rotation from the sprocket |03 to the shaft |23. When the sprocket |09 is given retrograde movement the members |31 ride back or out on the surfaces |21 and the sprocket |03 is free to turn without producing rotation of the shaft 23. The shaft |23 extends outwardly beyond both ends of the clutched sprocket |09 and is rotatably supported at one end by an anti-friction bearing |33 carried by a flange or bracket |34 of the case I0. A spacer |35 is provided on the shaft |23 between the bearingr |33 and the adjacent bearing |24. The collar |29 within the sprocket |09 serves to space the two bearings |24 and the bearings have shouldered cooperation with the sprocket |09. A nut |35 is threaded on the shaft |23 and clamps against the outermost bearing |24. It will be seen that the structure just described serves to hold the clutched sprocket movement along the shaft |23.

The shaft |23 of the clutched sprocket |03 carries a sprocket |31 for driving the chain 31. The sprocket |31 is keyed on the end portion of the shaft |23 which projects beyond the bearing |33. A screw |38 is threaded in the end portion of the shaft |23 and clamps a washer |39 against the hub of the sprocket |31 to hold the sprocket in against the bearing |33, which in turn bears inwardly against the spacer |35. A lubricant passage |40 leads inwardly through the shaft |23 from the outer end of the screw |33 to carry lubricant to the interior of the collar |29 which has a lubricant channel |4| leading to the bearings |24.

The drive sprocket |31 keyed to the clutch shaft |23 is spaced below and forwardly of the rear feed roll 82 and an idler sprocket |42 is spaced below the feed roll sprocket 33 to direct the chain 81 over the drive sprocket |31. The idler sprocket |42 has an eccentric shaft |43 carried by suitable bearings |30 on the rear case bracket 81| and the eccentric shaft'may be adjusted or turned so that the idler sprocket |42 takes up any slack that may develop in the chain 81. It will be seen that upon the downward stroke of the walking beam |532 that the chains |08 cause rotation of the sprocket |09 and this rotation is transmitted to the drive sprocket |31 through the clutch members |3| and the shaft |23 so that the chain 81 is moved a given distance to advance a predetermined length or portion of the paper strip S to the cutting and cup forming mechanism i2.

Means is provided to turn back or return the clutched sprocket |09 during the upward strokes of the walking beam |02. This means is preferably a spring means associated with the clutched sprocket |933. In the preferred construction illustrated the spring return for the sprocket |09 includes an anchor block |45 secured in an open.-

|09 against axial 'ing |36 of a flange or bracket |411 in the case |11.

The block ill-3 is tubular to receive the projecting end portion of the shaft |23 and the block |45 may be of sufficient length to partially telescope over the nut |36. A cup or flange may be provided on the adjacent end of the sprocket |33 to telescope over the end portion of the anchor block |35 with substantial clearance. A coiled torsional spring |48 surrounds the anchor block |115 and has an out-turned end portion engaged in a slot |139 in the flange |53 and has its other end portion anchored in an opening 15| in the anchor block |45. When the sprocket |30 is turned during the downward stroke of the walking beam |02 the spring |03 is subjected to torque or increased torque and energy is stored up in the spring. When the Walking beam |02 begins its upward stroke the spring |38 turns the sprocket |03 back so that the chains |08 are rewound on the sprocket. The spring U18 operates to completely restore the sprocket |03 during each upward stroke of the walking beam |02 to prepare the sprocket for the next active stroke. During the return movement of the sprocket |39, that is, during the upward stroke of the walking beam |02 the clutch members |3| ride outward on the surface |21 or at least do not wedge between the surfaces |21 and the periphery of the flange |33 and the sprocket |02 is turned back without producing rotation of the shaft |23. Accordingly, the drive chain 81 of the paper feed lmeans remains stationary during the return strokes or upward strokes of the walking beam |02. It is to be observed that the feed means l2 described in detail above is entirely automatic and operates to advance the paper strip a given distance, that is to supply a given amount of paper to the mechanism I2, during each revolution of the crank shaft I9.

The mechanism I3 receives the strip S as it is advanced by the feed means 2 and cuts a disc shaped cup blank from each strip portion 1 thus advanced and then performs a number of operations on the blank to shape the same into a complete strong, self-sustaining container or cup having a beaded or rolled rim. The mechanism 3 performs the several operations during the time period required for the advancement of each portion of the strip S, that is, during each complete up and down cycle of the walking lbeam |02 and the mechanism I3 may be operated rapidly to form a large number of completed cups per minute. The blank cutting and forming mechanism i3' comprises a number of forming dies and punches assembled and operated in concentric relation relative to a single axis so that all of cup blank cutting and cup form'- ing operations occur while the cup remains on a single axis. In the preferred structure illusall times so that it c-annot be soiled by the lubricant' of the drive means, etc.

The mechanism |3 includes a supporting plate |52 mounted on the upper wall of the case i0 t0 extend across an opening |53 therein. A horizontal passage or guide channel |53 passes below `this plate |52.

The channel |52 extends from the forward feed roll 8| and serves to guide or 1 direct the strip S to the mechanism |3 and to guide the scrap from the mechanism. The first 1 operation performed by the mechanism i3 in `the manufacture of a given cup C is the cutting 11 scription. of. the. blank. cutting means, best; illustratedin Fig. .4.

The blankcutting means includes aiixed ring |55. anda movable. ringv or-sleeve |56 cooperable one with the other to shear-ofi thepaper and thus form a disc shapedf blank. The stationary ring |55 is secured to the under side of the iixed plate |52 by screws |51 and projects downwardly beyond a centering iiange |58 onY the under side of the plate. The ring |55 has a flat lower end which is flush with the upper wall of the channel |54. In this connection it may) be observed that the walls |59 of the channel structure are thickened at the mechanism i3 and the. ring |58 is received in a vertical opening |80 which passes through this channel structure. The movable cutting ring or sleeve |5$is secured in the upper portion of a vertically movable cross head |61. The cross head |t| has a flanged or thickened lower portion provided with a central opening |62. An upstanding centralhub or collar |63 is bolted or otherwise Xed to the-thick cned lower portion of thecross-head |6| andthe blank cutting sleeve |56 is secured in the collar |634 to project beyond its upper end. Thecutting c sleeve |56 has a` :dat upper end and the sleeve is proportioned toaccurately or clcselyt within the stationary ring |55. The-sleeve |53 is movable between a` position where its upper end is spaced below the channel |54 and the pos'tion where its upper portion isl received within the ring |55, serving to cut the cup blank during this movement and operating to support the cup blank within the ring |55l when in its uppermost position. An annular memberer ring it@ of rubber orl other; resilient material engages around'- the projecting upper portion of. the movable blank cutting. sleeve |56 and is engaged between the upper end of the collar' |63 and the lower side of the stationary channel structure, |59. Thering Hillis substantiallyv compressed during the upward movement of the blank cutting sleeve |56 and. serves to clear the sleeve |56 and return the same'to its lower position.

The cross head |5| carrying the cutting sleeve, Hit` is o erated by the power shaft or crank shaft 19; Themeans for operating the cross head. itl includes earsorv lugs |65 proiecting from. opposite ends ofr the cross head i6! and pairs of operating rods |66. secured to the lugsf |65 and projecting downwardly therefrom, see Fig. 14 Bull gears |151 are keyed or ixedtoend portions of the shaft i9. which project beyond the bearings 2|! and the inner sides of the bull gears |61 carry, what will term, outer cams |63. Each of the cams |63 has a lift or raised part |59 on its active peripheral face, see' Fig. 15. A roller |-1ll is rotatably secured to the lower ends of each pair of rodsv |55 being carried by pins or shafts |1| fixed in the cross bars |12 which connect the lower ends of the adjacent rods |66. The rollers |111 cooperate with the camsA |38. DuringV each revolution of the crankshaftv lithe raised cam parts |59 cooperate with the. rollers |111. to move the cross headv i5 |1 upwardly toactu ate the cuttingy sleeve. ld. As illustrated in. Fig. 15, the raised cam partsY 1.5.9. are relatively short andv the.- cutter sleeve |55 remains in its actuated or raised position only a relatively short time and then returns to its idle or. lowerv positionI when the rollers |10 leaveV the raised cam parts Immediatelyffollowing the cuttingofthe blank the. mechanism; i3 pleats or flutes the" blank' to condition itior. forming into the cup` shape. The-f.

mechanism. 32 includesa pair'ofcooperating ute forming members ordiesnamely, a lower flute forming die., or.r punch |13 and an upper flute forming die; |14, see. Fig. 4. The lower die or punch |13 ismovablevertically within the above described cutting sleeve. |56, while the-upper die |14 is stationary, being mounted in the plate |52; The lower. die or punch |13 is a tubular member orv ring having a central vertical opening 115 and thev punch is shaped and proportioned to ride up and down within the sleeve |53 to be guided thereby. The upper die |14 is likewise a tubular or ring-like part having a centralopening |16 which registers with an opening |11 in the plate |52. The upper die |14 is iixed'to the under side of the plate |52 and may be secured in a central recess in the plate by the screws |51'which serve to attach the cutting ring |55 to the plate, as described above. The

`die |11'. nestswithin the upper portion of the cutting, ring |55-l and has a flange |18 provided withopenings which pass orreceive the screws |51, see Figl 4'.

The under'sideofthe die |141` is dished having a rustconical concave surface pitched upwardly and inwardly from the cutting ring |55 to the opening |16. A plurality of radial grooves |13 is provided in the dished-under surface of the die |111. The grooves |19Y are equally circumferentially spaced and are identical in size and shape. The radial grooves |19 preferably have flat downwardly convergent walls and flat bottom or upper walls whichY are pitched upwardly and inwardly toward the common vertical axisof the mechanism |31 The upper side of the lower flute forming die or punch |13 is formed to mate with or nest inthe die |112 to presser form. the iutesi in the blank of the cup. The-upper-side ofthe punch |13is truste-conical sloping upwardlyand inwardly from its periphery to the central opening |15. A plurality of circumferentially spaced ribs isprovided on the upper side of thelute forming punch E15; The ribs |911r are identical in size and shape and are equally spaced one from the other. The grooves |19- and the ribs |89 areY related so that the ribs |80' are adapted to enter the grooves to form the iiutes in the paper'blank'. It will be seen. that when the lower die or punch |13 is pressed upwardly within the stationary die |113 the grooves |13 and ribs |86 cooperate to form the iiutes in the cup blank and the cooperation of the die and punch gives the blank its initial dished shape. It should be noted that the grooves |19 and ribs |80 diminish inv depth as they extend inwardly andthat theyterminate some distance from the common vertical axis of the mechanism I3 leaving a plain; or unfiutedl central portion in the blank.

The means for carrying and operating the flute forming punch |13l includes a cross head lill disposed below the cross head ||5| of the blank cutting means, see Fig. 4. The cross head |8| is flanged or reenforced and has a central vertical opening which receives a tubular upstanding column. |82; A nut; |83 may be threaded on the lower'portion4 ofthe column |82 to clamp against the under side of" the cross head |81 to secure the column to the head. The column |82 extends upwardly and is received within the tubular cross head lei. A iiange ISil on the upper end of the columnV |82 is slidably received within the collarf- |63. Screws removably secure the die or punch |13 to theupper side of thev iiangev IM. Thel flange |84- and the punch `the ute forming punch |13. 'adjacent push rods or operating rods |86 are xed to lugs or enlargements on the ends of the vcross head |85, see Fig. 14. The rods |80 extend downwardly to adjacent the bull gears |61 and the lower ends of the adjacent rods |80 are 1 i connected by heads or tie members |91, see Fig.

- |13 are effectively guided for vertical movement by the collar |53 and the cutting sleeve |56.

Cam means associated with the crank shaft 9 is provided to operate the cross head |8| of Pairs of spaced 15. An annular cam |88 is fixed to the inner side of each bull gear |91 within the outer cam |08. Each cam |88 has an outwardly projecting continuous cam track or cam ridge |89 and the 'tie members |81 on the rods |86 carry means for cooperating with these cam ridges. In practice` each tie member |81 carries an upper roller |90 for cooperating with the outer surface of a cam ridge |89 and carries a lower roller |9| for cooperating with the inner surface of the cam ridge |89. The rollers |99 and |9| are rotatably supported on shafts or pins |92 and |93. respectivelv, on the members |81. The cams |98 have identical shapes and settings and are formed to cause rather sudden or rapid upward and downy ward movements of the flute forming punch |13.

The cooperation of the external surface of the l cam ridges |89 with the rollers i9 produces the upward or active movement of the flute forming punch |13 and the engagement of the inner surfaces of the ridges |89 with the inner rollers 59| produces the return or downward stroke of the When the flutes have been formed in the blank by the punch |12 and die |14, as just described, *Y the mechanism i 3 operates to comprese the flutes of the cup blank and to give the blank its iinal cup shane, the collapsing or compressing of the flutes permitting or providing for the forming of the cup C to the required shane and also giving the wall of the cup substantial rigidity. The

mechanism i3 includes a pair of cooperating die `elements for giving the cupI blank its cup shape.

The lower die element is in the nature of a punch i |94 and the upper die element is a socket-like die |95 facing downwardly to receive the punch |94, see Fig. 4. In accordance with the invention the punch |94 and the die |95 are in coaxial telescopic relation with the other cup forming elel ments of the mechanism I3.

The cup forming die |96 is an elongate tubular member adapted to move up through the openings |15 and |11 with considerable clearance to enter or cooperate with the downwardly moving die |95 which is disposed above the plate |52. The punch |9l has a cylindrical lower portion and its upper portion is shaped to give the wall of the iinished cup C the desired configuration. In

lthe preferred construction the upper portion of the punch |94 is round in cross section and its Q external surface |98 gradually slopes upwardly `and inwardly. This external active surface |96 of the punch |99 is smooth and regular to engage within the cup C without marring or distorting the paper of the cup. As best illustrated in Figs.

.|16 and 17, an annular upwardly facing shoulder |91 occurs on the exterior of the punch |94 where i the sloping surface |95 mates or joins the cylin drical surface on the lower portion of the punch 14 |94. This shoulder |91 is preferably at and occupies a plane normal to the longitudinal axis of the punch |94. The upper end of the punch |94 is flat and normal to its longitudinal axis except for a raised annular ridge |98 occurring at its periphery.

The cup forming punch |94 is carried by a vertically movable rod or column 200 through the medium of a spring loaded slack connection. The column 200 has its lower portion received in a central opening 20| in a cross head 202 which is located below the cross head |8|. A flange 203 on the column 200 engages against the upper side of the cross head 202 and a nut 204 is threaded on the column 200 to engage against the under side of the cross head 202 and thus secure the column to the cross head. The column 290 passes upwardly through the column |82 with ample clearance and is provided with a central longitudinal opening 25 which extends through it from its upper end to its lower end. The upper end portion of the column 290 is reduced in external diameter. A stem 285 is slidable in the upper portion of the column opening 25 and the stem is provided with a central longitudinal opening 201. The cup forming punch |94 isremovably attached to the upper end of the slidable stem 208 to move therewith. A screw 208 is entered in the upper end of the punch 94 and its head has shouldered engagement within the punch. The screw 208 extends beyond the lower end of the punch |94 and is threaded in the opening 201 of the stem 206. The screw 208 has shouldered cooperation with the upper portion of the stem 200 at 209. Means is provided for limiting the movement of the stem 29 and punch |94 relative to the column 290. This means may include a p-in 2|0 carried in a transverse opening in the stem 209. The pin projects from opposite sides of the stem 208 and extends into diametrically opposite longitudinal slots 2|! in the wall of the column 200.

The punch |94 is spring held or spring loadedI being urged upwardly so that it is spaced some distance above the upper end of the column 200 when in its idle or unactuated condition. The

' means for yieldingly urging the punch |94 upwardly comprises a coiled spring 2 l2 arranged within the opening 295 of the column 20. The spring 295 is held under compression between the lower end of the punch carrying stem 206 and the upper end of a plug 2 i3 threaded in the lower end of the column 200. The spring 2|2 is normally under compression to hold the punch |94 where its lower end is spaced above the upper end of the column 290 but the spring is yieldable and is subject to further compression when the punch |94 is engaged in the die |95, as will be later described.

'Ihe cup forming punch |94 is operated by the shaft i9 through the medium of crank pins and connecting rods.

cup forming punch 96| during each revolution of the crank shaft. In practice, the parts may be related so that the punch |94 is moving upwardly during the upward actuation of the ute formaseo/ics '15 ing-.punch H3- and the upper end of the punch |94 may be in a plane at the upper end of the vgrooved active face of the die |16 when the flute forming operation is completed. Immediately V'thereafter the flute forming punch |85 moves downwardly to free the cup blank and the punch ldd continues upwardly to push the cup blank upwardly from the die i-l'l. In this connection it is to be observed that the inner corners or faces of the flute forming die |14 may be rounded or bevelled @if so that the cup blank is not injured or distorted when the punch |95 draws it upwardlv out of the die Si!! The cup forming die |95 is removably carried -by a cross head 259 disposed above the case 5 vand spaced above the plate |52. A carrier 22|] is kbolted or otherwise secured to the under side of the cross head 259 and projects downwardly toward the plate |52. The carrier 228 has a socket 22| in its lower side whose longitudinal axis is concentric with the common axis or the several 4elements of the mechanism i3. An opening 222 of reduced diameter' continues upwardly through t-he carrier 223 from the socket 22i. The cup forming die 95 is centrally and vertically disposed within the socket 22|. The die |95 is a .tubular member received in the socket 22| with ample clearance and the upper end of the die |95 has an inturned head or flange 223 present- -ing an end of increased area which bears on the end wall of the socket. The exterior of the die |55 is cylindrical and of uniform diameter throughout.

The interior of the die |55 has an active cup lshaping surface 224 corresponding in configuration to the surface 55. The surface 224 slopes downwardly and outwardly to the lower end 225 of the die 95. The lower end 225 of the die is at and lies in a horizontal plane. The end surface 225 is adapted to directly opposite the shoulder i8? of the punch 94 to form a step or shoulder 226 on the cup C, see Figs. 16 and 17. The cup shaping surface 224 of the die |95 has substantially the same inclination as the cup shaping surface of the punch |95 and when the die a-nd punch rare cooperating the wall of the cup C is given its nal :daring conguration by these cooperating surfaces. Furi ther, it will be observed that the cooperating ac- .tive surfaces of the punch 194 and die 95 compress the nuted wall of the cup blank and the iiutes are converted into pleats or folds of double thickness, thus materially increasing the strength and stability of the cup. The die |55 may be secured in the Acarrier .228 by a bushing 227 which extends through the opening 222 of the carrier 225. The bushing 22'! extends downwardly into the die W5 and has a flange 229 on its lower end which bears upwardly against the flange 223 of the die N5 to clamp the die upwardly against the upper wall of the socket 22|. The bushing 224i projects upwardly beyond the upper end of ,the carrier 2263 and an elongated cap 229 is threaded on the projecting portion of the bushing `and clamps against the upper end or" the carrier 225 to secure the bushing in the carrier.

The cup forming die |95 moves downwardly as the cup forming punch |94 moves upwardly, -in other words, the twor cup forming elements move toward one another to form the cup C. The means for actuating the cup forming die 95 includes connecting rods 236 engaged on and operf ated by intermediate cranks 23| of the crank shaft t9, see Fig. 14, The connecting rods 23 extend upwardly and outwardly' from their cranks 23| and are pivotally connected with a travelling horizontally disposed bar 232. The bar 232 is provided at its under side with pairs of downwardly projecting ears 233. Horizontal pins 234 are carried in openings in the ears 233 and are turnably received in openings in the upper ends of the connecting rods 23B to connect the rods with the traveling bar 232 by screws 231s` and extend upwardly to the cross head 2|9. As illustrated in Fig. lfl of the drawings the rods 235 may slidably pass through openings 237 provided in thickened end portions of the cross head 2512. This assists in guiding and steadying the rods 235. The rods 235 are further guided by bushings 233 secured in openings 239 in the upper wall of the case IB. The upper ends of the spaced vertical rods 235 carry the cross head 2|9. It will be seen that the cross head 2|9 carrying the die :'95 moves up and down through a complete cycle during each revolution of the crank shaft i9. The cranks or eccentric elements of the drive are so related that the upper cup forming die Edtl moves downwardly as the cup forming punch tot moves upwardly. These movements continue until the punch 94 bottoms in the die |95 to bring about the full compression of the iiutes and to give the blank its permanent cup shape.

The mechanism i3 further embodies novel means for forming a bead B on the rim of the cup C. This means is associated with the Cup forming elements just described and is driven by the same operating or driving means to form and complete the bead immediately following the shaping of the cup C. The bead forming means includes a sleeve 2N engaged around the die 595:. The sleeve 213i] is slidable or movable in the annulus existing between the exterior of the die i915 and the wall of the socket 22|. The length of the sleeve 24E! is such that the lower end of the sleeve is slightly below the lower end of the die |95 when the sleeve has its upper end bearing against the upper wall of the socket 22|. The sleeve 245 is movable vertically but friction means is provided to resist such movement. A recess 24| is formed in the side wall of the socket 22| at the lower end of the carrier 220. The outer wall of the recess 24| converges or slopes upwardly and inwardly. Suitable friction material 242, such as ber or the like, is tightly packed in the recess 2M to oifer substantial resistance to movement of the sleeve 2M). An annular follower 243 is engaged against the lower end of the friction material 2432. A gland or nut 244 is threaded on the lower end of the carrier 22|] to force the follower 253 upwardly against the friction material 2122. When the nut 224 is threaded upwardly the friction material 2612 is tightly compressed against the sleeve 242. The friction material 242 serves to hold the sleeve 245 against vertical movement until the sleeve is subjected to a positive moving force. The importance and function of this friction holding means will be described below.

At the time when the die and the punch ist are moving together to shape the cup C the sleeve is in a position where it projects a substantial distance below the lower end of the die i551. The friction. material 242 holds the sleeve in this position and the sleeve moves downwardly with the carrier 225 withoutv movement relative to the die |55. As best illustrated in Fig. or the drawings, the internal diameter of the sleeve 2d@ is slightly greater than the eX- ternal diameter of the cylindrical surface 245 of the punch idd. The. clearance between the in-

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