US2411082A

US2411082A - Cup forming machine

Info

Publication number: US2411082A
Application number: US477381A
Authority: US
Inventors: Conti Eugene
Original assignee: HERZ Manufacturing CORP
Current assignee: HERZ Manufacturing CORP
Priority date: 1943-02-27
Filing date: 1943-02-27
Publication date: 1946-11-12
Anticipated expiration: 1963-11-12

Description

Nov. 12, 1946. T 2,411,082

CUP FORMING MACHINE Filed Feb. 27, 1945 5 Sheets-Sheet 2 INVENTOR rze- C'onzfz v .EQCONTI 'CUP FORMING MACHINE Nov; 12, 1946.

'Ffiled Feb. 27, 1945 5 Sheets-Sheet s INVENTOR Eaywza 6022 ii Nov. 12, 1946. ON 2,411,082

CUP FORMING MACHINE Filed Feb. 27, 1943 5 Sheets-Sheet 5 HIII HIII INVENTOR r of forming cups.

Patented Nov. 12,1346

CUP FORMING MACHINE Eugene Conti, Jackson Heights, N. Y., assignor to Herz Manufacturing Corporation, a corporation of New York Application February 27, 1943, Serial No. 477,381

23 Claims.

This invention relates to a machine for and method of forming cups from paper or like materials.

One of the objects of this invention is to provide a new and improved cup forming machine. Another object of this invention is to provide a machine of the above character which is simple, thoroughly practical, and durable. Another object is to provide a machine of the above character which forms cups rapidly and efiiciently. Another object of this invention is to provide a cup forming machine which requires a minimum of attention during operation and thus is inexpensive to operate. Another object of this invention is to provide a new and improved method of forming cups. A further object of this invention is to provide a rapid and efficient method Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements, arrangements of parts, and in the several steps and relation and order of each of the same to one or more of the others, all as will be illustratively described herein and the scope of the application of which will be indicated in the following claims.

In the drawings in which is shown one of the various possible embodiments of this invention,

Figure 1 is a staggered vertical section taken through the right side of the machine, certain parts of the machine being removed for purposes of clarity;

Figure 2 is a horizontal section of the machine taken on the line 22 of Figure 1, certain parts of the machine being removed for purposes of clarity;

Figure 3 is a vertical section taken through the center of the machine on the line 3--3 of Figure 2;

Figure 4 is a front view of the center portion of the machine, certain parts being in elevation and others in section; and,

Figure 5 is a diagrammatical view of the machines driving mechanism taken from the front of the machine.

Similar reference characters refer to similar parts throughout the several views of the drawmgs.

In forming cups on this machine, blanks are fed from a hopper l0 (Figure 1) beneath the die of a "primary plunger and male die assembly, generally indicated at II (Figures 1 and 4), whichcoacts with a die, generally indicated at 48 (Figure 4), of a primary female die assembly 2 to pleat the sides of the blanks. Said plunger assembly ll then presses the pleated blank into a secondary female die assembly generally indicated at l2. This die assembly, which is mounted on a slide plate or slidable carrier generally indicated at 13, then shifts to the left, as viewed in this figure, so that it is positioned beneath the die of a secondary plunger and male die assembly generally indicated at I4. This assembly, which carries a secondary male die, coacts with the secondary female die assembly l2 to form the bottom of the cup and fold a lipthereon. After this operation, plunger assembly M by suction lifts the cup out of die 12, and when the car-' riage moves back to its first position, it drops this cup onto a delivery tray generally indicated at l5. During the time that plunger assembly 14 is acting upon the pleated blank in die assembly 5 2, plunger assembly I. I is pleating another blank above the die assembly generally indicated at E6, and on completion of the pleating, the pleated blankis pressed into this die assembly. When slide plate l3 shifts and plunger assembly [4 is dropping a completed cup upon delivery tray l5, secondary plunger assembly I! forms and folds a lip on the pleated blank in die assembly 16. The completed cup is then raised by plunger assembly I! and, when the slide plate I3 moves back in the opposite direction, is dropped onto a delivery tray generally indicated at [8. The cups are removed from delivery trays I15 and I8 by a pair of pusher members 19 and 20 (Figures 2 and 4) which move forwardly across the trays l8 and IE to push the cups 01f of their respective delivery trays.

Thus, the primary plunger assembly ll pleats blanks and places them in die assemblies l2 and Hi. The secondary plunger assemblies form and fold lips on the cups, remove them from die assemblies [2 and I6, and place them on delivery trays l5 and [8. In operation, the plunger assembly pleats a blank and places it in a die assembly. One of the secondary plunger assemblies is forming and placing a lip on a pleated blank, and the other secondary plunger assembly is dropping a completed cup on a delivery tray. When these operations have been performed, the slide plate I3 shifts, the primary plunger assembly pleats another blank, and the operations of the secondary plunger assemblies are reversed.

Referring to Figure 3, hopper I 0 carries a stack of blanks 2|. These blanks are removed from the hopper one at a time by a suction finger 22 which pivots on a pin 23. Suction finger 22 is positioned between a pair of feed discs 24 and,

after gripping a blank Zia, moves or bends it' downwardly so that the righthand portion of the blank, as viewed in Figure 3, is positioned on the top edges of the feed discs 24. Feed discs 24 coact with feed roll to feed blanks into the machine.

To periodically move feed roll 25 out of the path of movement of suction finger 22, the roll is mounted on an arm 2a of a bell crank 2%. This bell crank pivots on the shaft 21 of feed discs 24 and carries a cam roller 28 on its other arm 251). A cam 28 mounted on shaft 38 acts upon cam roller 28 to rock bell crank 26 and thus move feed roll 25 out of the path of suction finger 22 as the finger swings upwardly to grasp a blank and then swings back to bend said blank downwardly. After a blank is placed in the position of blank 2 la, Figure 3, the feed roll 25 swings back into operative relation with feed discs 24 and the blank to feed the blank into the machine.

Each blank, as it is moved to the right by feed roll 25 and feed discs 24, is fed between two pairs of feed discs 3! and 32. These feed discs, which feed the blank beneath the primary plunger assembly i l (Figures 3 and 4), are spaced to permit movement of a positioning finger 33 (Figure 3) therebetween. Positioning finger 33 moves upwardly between the pairs of feed discs 3! and 32 after the feed discs have fed a blank beneath plunger assembly l i and pushes the blank to the right,-as viewed in Figure 3, into engagement with a Vertical guide plate 38 (Figures 2, 3 and 4). Positioning finger 33, which is pivotally mounted on a shaft 88 (Figure 3), is moved by a crank 34 (Figure 3) and link 35, which is actuated by mechanism to be described more fully hereinafter,

Plunger assembly ll includes a sleeve 39 (Figure 4) slidably mounted for vertical movement with respect to the machine in bearings 48 and M (Figures 1 and 4). These bearings are secured to a front plate 42, which forms a part of the framework of the machine. pair of pins 43 and 44 (Figures 1 and 4) which extend outwardly from the sides thereof. The front surfaces of these pins contact slide plates, such as slide plate 45 (Figure l), which coact with the pins to prevent rotational movement of sleeve 39 in bearings 48 and 4 I. The lOWer end of the sleeve 39 has a hollow male die member, generally indicated at 45 (Figures 3 and 4) connected thereto by set screw 4-? (Figure 4). The die 46a of die member 46 coacts with a female die, generally indicated at 48 (Figures 3 and 4), to pleat the sides of the paper blank beneath plunger assembly 8 i, all as will be described fully hereinafter.

A rod 49 (Figures 3 and 4) is slidably mounted within sleeve 89 and has a cylindrically shaped seating member or head, generally indicated at 58, secured to its lower end. This head is positioned within hollow die member 46 and has vertical splines 5| (Figure 3) thereon which coact with vertical splines 52 formed on the inner surface of die member 45 to prevent rotational movement of head 58 with respect to die member 46. A retaining ring, generally indicated at 53, is mounted on die member 45 and has an annular flange 54 extending inwardly from its upper edge which coacts with a shoulder 55 on die member 48 to hold the ring in assembled relationship with the die member as the die member is raised (Fi ure 4) and to permit vertical movement of the ring with respect to the die member when the die member is lowered (Figure 3) Sleeve 39 carries a spring 52 (Figure 2).

Female die 43, which is positioned below and in co-axial alignment with male die member 46, is mounted on a bracket 58 secured to a bed plate generally indicated at 51 (Figure 3). This die has an annular flange 58 extending outwardly from the upper portions thereof over bracket 58, and the lower portion of the die is cylindrically shaped and" has a slightly smaller diameter than the diameter of a hole 59 in bracket 55 through .which it extends, thus permitting rotational movement of the die with respect to bracket 56. Die 48 has an arm, generally indicated at 68, extending rearwardly therefrom (Figure 1, 2 and 3) and connected to a pin 6! on bed plate 51 by a This spring through arm 63 resiliently urges die 48 to move in a clockwise direction as viewed in Figure 2.

The outer portion of arm 68 has a bearing surface eta thereon which coacts with a bearing surface on the upper portion of an arm 88a of a bell crank generally indicated at 83. Bell crank 63 (Figure 3) is pivotally mounted on bracket 56 by a pin 64. The other arm 63?) of the bell crank (Figures 2 and 3) is pivotally connected, to a link 65 by bracket 86 and pivot pin Bl (Figure 3). Link 35 is moved with a reciprocating action in a vertical direction by mechanism to be described more fully hereinafter, and each time the link 65 moves upwardly, as viewed in Figure 3, it acts through bell crank 53 and arm 55 to give die 48 a rotational twist.

In operation, a blank is fed beneath plunger assembly i! when it is in the position shown in Figure 4 so that it abuts against guide plate 36 (Figures 2 and 4). The rod 4;? and sleeve 39 are then moved downwardly through mechanism to be described more fully hereinafter, and retaining ring 53 is the first portion of the plunger assembly to contact the blank. As is best shown in Figure 4, the lower edge 53a of retaining ring 53 tapers inwardly, and this edge carries a plurality of grooves 531) complementary to thepleating grooves in female die 48. This ring holds the lank in position as the rod 49 and sleeve l I move downwardly together (Figure 3) to seat the male die 46 in the female die 48. These dies carry complementary pleating grooves which are so shaped that, when female die 48 is twisted by arm 68, the side of the blank is pleated.

During the formation of the pleating grooves, the male die 45 is prevented from rotational movement because of its connection to sleeve 39. \After the blank has been pleated by the twisting of die 48, spring 62 (Figure 2) moves the die 48 into its original position. Next, sleeve 39 moves upwardly slightly to move die 46a out of contact with die 48, and rod 49 with its head 50 moves downwardly to press the pleated blank through the open bottom of the female die 48 (Figure 3) into either female die assembly l2 (Figure 4) or die assembly l6, whichever is positioned beneath die 48.

As plunger assemblies [:4 and I! (Figure 4) are l substantially similar in construction, the description of more specific details of construction will be limited to plunger assembly IT. This assembly includes a sleeve 88 mounted for vertical sliding movement with respect to the machine in

bearings

69 and 18 mounted on front plate 42 (Figure l). Sleeve 68' (Figure 4) has a pair of pins 1.! and 12 extending outwardly from the sides thereof which coact with slide plates similar to slide plate 45 (Figure 1) to prevent rotational movement of the sleeve with respect to

bearings

68 and 10. Sleeve 68 has a head generally indicated at It connected thereto by a set screw I I. The lower portion of head I3 consists of an annular ring member I5 which is secured to the upper portion of the head by screws 130.. A cylindrically shaped die member 16 is mounted within the lower portion of annular ring 15 and extends therebelow. The lower edge of this die member has a groove ll therein which coacts with another die to form a lip on each cup it acts upon, all as will be'fully described hereinafter. A rod 'IBhaving a hole 19 extending through its center is mounted for vertical sliding movement within sleeve 08. A oylindrically shaped seating member as head 80 is mounted on the lower end of rod I8 and is of a slightly smaller diameter than the inner diameter of die member 76. The lower portion of head 80 is shaped to form a male die 8i which is adapted to coact with the female die assembly I6. Means are provided to move both sleeve 58 and rod 78 upwardly and downwardly with respect to the machine both in unison and as separate elements, all as will be described fully hereinafter.

Plunger assembly I i includes a sleeve 82 having a head 83 and die member 86 mounted thereon. Rod 85 has a head 06 mounted on its low er end and a hole extending through the rod extends through head 36. The lower portion of head 86 is shaped 'to form a male die 8? which coacts with female die assembly I2 during the operation of the machine. In this plunger assembly, rod 85 and sleeve 82' with their connected parts also are moved upwardly and downwardly both in unison and as separate elements by means to be described more fully hereinafter.

Bed plate 51 (Figures 2, 3 and' l) extends transversely across the machine in a horizontal plane and is supported by framework braces 83 and 89 (Figures 1 and 2). This plate has a way 90 (Figures 2 and 3) cut therein which extends throughout the length of the bed plate and within which slide plate I3 is mounted. Slide plate I3 (Figure 2), which is of rectangular shape, has a pair of tongues QI and 02 (Figures 2 and 4) extending outwardly from the ends thereof. A bracket 03 is connected to the end of tongue SI, and this bracket is pivotally connected by pin 94 (Figure 2) to the head 95 of a cylindrically shaped piston member Piston member 95 is slidably mounted within a sleeve Bl, the head 98 of which is pivotally connected to the upper end of a rocker arm 09. A spring I00 connected to piston member head and to sleeve head 00 resiliently urges these heads toward each other to maintain piston member 85 within sleeve til. Thus, piston member 96, sleeve 91, and spring I00 form a resilient connection between the slide plate and the upper end of rocker arm 99 (Figure 2). Thus, if at any time the slide plate should be stuck in the position shown in Figure 2, this assembly would permit the rocker arm to move outwardly Without damage to the dies or whatever part of the machine that was causing the slide plate to stick.

Rocker arm 99, which is resiliently uged to the right, as viewed in Figure 2, by a spring (not shown), extends downwardly to shaft IElI (Figure 1) on which it is pivotally mounted." The rocker arm is moved by a 'cam I02 mounted upon shaft I09 which is driven by means to be disclosed more fully hereinafter. Thus, as rocker arm as moves with a reciprocating action, slide plate I3 will be moved back and forth on bed plate 51 beneath the plunger assemblies.

Cam m2 is so shaped that there will be a defi nite time interval between movements of the rocker arm, thus providing a time interval to permit the plunger assemblies to accomplish their various functions on each stroke.

The secondary female die assemblies I2 and I6 (Figure l) are substantially similar in construction and include rigidlymounted platen or anvil die members I04 and I05, respectively. Die.

portions I06 and I0! are out into the upper" faces of said platen or anvil members I04 and; I05, respectively, which aresecured to slide plate: I3 by screws I08 and I00. Bed plate Iflis cut out at IIO to accommodate the heads of screws I08 and I00 as slide plate I3 moves with respect to bed plate 57. i r

Mounted on anvils Hi l and I05 are a pair of cylindrically shaped casing members III and I I2 having die members I I3 and I I4 fitted there-- in in any suitable manner, such as by a force fit; and I I 'I are preferably slightly greater than the outer diameters of anvils I04 and I05, thus permitting vertical movement of casing members III and H2 with respect thereto. Casing memhers I II and H2 are resiliently pressed or biased upwardly by sets of springs H5 and N0, the up-- per ends of which extend into holes formedin casing members III and [I2 and the lower ends of which extend into holes formed in slide plate I3. I

Casing members III and H2 have annular I2 and I6 are positioned with respect to slide plate I3 in the position of die assembly I2 (Fig ure 4). After a partly formed or pleated blank has been pressed into the secondary female die then positioned beneath plunger assembly II byhead 50, the pleated blank is moved beneath either plunger assembly I4 orplunger assembly I! by female die assembly I2 or by dieassembly I5, moving with carrier I3. When a female 'die assembly, such as die assembly I6 (Figure 4), is so positioned beneath a secondary male die and plunger assembly, the seatng head of the plunger assembly moves downwardly until the die 0I thereon seats in the die I01 of anvil member I05. Next, sleeve 68 move downwardly, and the groove 71 on die member I6 contacts the upper edge of the pleated die blank positioned in the female 'die assembly I6. Groove TI then coacts with groove IZI on die member H4 to roll the edge of the blank as it continues to move downwardly. During this time groove IZI in die member I I4 is resiliently urged upwardly toward groove 11 by the springs acting between slide plate I3 and casing member I I2. Downward movement of head 80 is continued until casing member H2 is moved to a position just above slide plate I3.

Next, suction is applied through a hose I22 connected to rod 18 which acts through the hole I9 extending through rod I8 to move the finished cup upwardly out of female die assembly I6 as plunger assembly I! moves upwardly. When the plunger assembly is in a raised position such The inner diameters of die members II3 7 7 M as the position of plunger assembly I4 in Figure 4, the slide plate shifts to position delivery tray I8 beneath plunger assembly I1. Then the suction pressure is released dropping the finished cup onto the delivery tray.

Delivery trays I and I9 .are mounted upon tongues 9| and 92 (Figure2) of slide plate I3 in any suitable manner, such as by .posts I23 and I24 (Figure 4). These trays have flat bottom plates I25 and I26 (Figures 2 and 4) and each has a pair of pins I21 and I28 extending vertically adjacent the edges thereof next to female die assemblies I2 and I6, respectively. These pins serve to prevent a cup from sliding off plates I25 and I29 when slide plate I3 moves to position the delivery tray in front of pusher members 29 and I9.

As the mounting and mechanism for moving pusher members I9 and 29 are substantially similar, specific description of the mounting and mechanism .for moving these members will be limited to member I 9. Referring to Figure 1, the right-hand portionof member I9 extends through and is slidably mounted in a block I29 mounted on the framework of the machine. A pin I39 mounted on the end of member I9 is connected by a spring I3I to a pin I32 mounted on block I29. This spring resiliently urges pusher member I9 to the left, as viewed in Figure 1. The left-hand end of pusher member I9 carries a face plate I9a which acts upon the cups to push each one off delivery tray I8 when tray I8 'is positioned in front of member I9.

Pusher member I9 is moved by a bell crank generally indicated at I33. This bell crank is pivotally mounted on the framework of the machine by a pin I34, and its upper arm I35 contacts a roller I39 mounted on pusher member I9. The other arm I31 of hell crank I33 carries acam roller I38 (Figures 1 and 5) which coacts with a cam I39 mounted on shaft I 49 to move the bell crank I33 with a reciprocating action. From the shape of cam I39 (Figure '1) it will be noted that, when cam roller I38 rides on the concave portion I39a of cam I39, spring I3-I is permitted to move pusher member I9 to the left, as viewed in Figure 1. When the cam roller I38 is riding on the other portion of cam I39, the upper arm [35 .of bell crank I33 moves to the right, as viewed in Figure 1, acting through roller I39-to move the left end portion of pusher member I9 out of the path of delivery tray I8.

Pusher member 29, which is mounted on block 399 (Figure 3), has a roller I4I (Figure 2) "mounted thereon which coacts with bell crank I42, cam roller I43 (Figures 2 and 5-) ,and cam I44 to move pusher member 29 (Figure 2) with an action similar to the action of pusher member !-5. Cam I44 is mounted on shaft I49 (Figure 1) and permits the spring of pusher member 29 to move across its delivery tray I5 when tray I5 is positioned in front of it.

When a finished cup is removed from a delivery tray by pusher member l9 or pusher member 29, it enters chutes generally indicated at 5-45 and I49 (Figure 2). As the chutes and the mechanism related to each of them are substantially similar, details of construction will be limited to chute I45. The upper end of chute I45 (Figure 1) has a mouth 941(Fig-ures land 2) which is positioned adjacent the front edge of delivery tray I8 when the slide plate I3 is at the righthand end of its stroke, as viewed in Figure 2. As the cups are pushed from thetray, they .are guided into mouth I41 by guide plate 39I (Figure mountedon shaft M9.

8 2) and slide downwardly therein (Figure 1'). As the width of the chute is slightly greater than the depth of a cup, cups passing down the chute are positioned on edge when they strike the bottom thereof. To remove the cups from the bot tom of th chute, an arm E48 pivoted on shaft I49 is provided. A spring I51 connected to arm I48 and the framework of the machine resiliently urges arm I48 to the left as viewed in Figure l. Ihe upper end of this arm carries a head I59 which is adapted to enter a hole I5I in the rear of chute I45 adjacent the bottom thereof, Arm I43 has .a link I52 pivotally connected thereto bya pin I53. Thislink has a split portion I54 therein extending around shaft I49, and its right-- hand end, as viewed in Figure 1, carries cam roller I55 which rides on a cam I55 (Figure 5) mounted on shaft I49. Cam I55 acting through link I52 (Figure l) coacts with spring I51 to cause arm I49 to move with a reciprocating action, and this movement is timed so that head I59 moves to the left, as viewed in Figure 1, each time a cup drops to the bottom of chute I45. In operation, the primary plunger assembly iI moves downwardly pleating the cup blank by co-action with the primary female die 48 and placing or seating it in the secondary female die assembly positioned therebeneath. At this time one.of the secondarymale die and plunger ,assemblies as I4 or H, is moving down and forming and placing a lip on a pleated blank while the other secondary plunger assembly is. dropping a finished cup onto its delivery tray. Thus, primary plunger assembly II moves downwardly once for each downward movement of each of the secondary plunger assemblies, and accordingly, plunger assembly II makes two strokes for each stroke of plunger assembly M or plunger assembly i1. Furthermore, as pointed out hereinabove, the sleeve and rod of each plunger assembly move downwardly and upwardly both in unison and as separate elements.

The motive power for moving the sleeves and rods and other moving parts of the machine is supplied by a motor I59 (Figure l) securedto the framework of the machine. Motor 959 (Figure 1) drives a pulley I59 (Figures 1 and 5) through belt I59 (Figure 1). Pulley I59 is connected to the end of shaft I9I mounted on bearings on the framework of the machine.- A gear; I52 (Figure 5) keyed to the right end of shaft Itl as viewed in Figure 5 meshes with a gear I93 keyed to shaft I94. At the opposite end of shaft I94 a gear Hi5 keyed thereto meshes with a gear I56 The left-hand end of shaft 49 (Figure 5) has a helical gear I91 keyed thereto which drives a helical gear I58. Helical gear 569 is keyed to shaft I59 whiclris mounted on bearings on the side of the machine. Gear 5.59 has twice the circumference of gear H55 so that gear-1.55 makes one revolution for two revolutions of shaft I54.

The moving parts of plunger assemblies I4 and I1 are actuated by, cams mounted on shaft I49. As the mechanisms for actuating the plunger assemblies are substantially similar, specific description will be limited to the mechanism' driving plunger assembly. I4. Referring to Figure 3, a cam roller arm I19 is pivotally mounted. on a shaft I1I extending transversely across and .secured to the framework of the machine. Cam roller arm I19 (Figures 1 and 2) carries acam roller I12 (Figures 3 and 5) which rides on a cam.l13 (Figure 5) keyed to shaft I49. A rod I14 (Figures 1, :3 .and5) is-pivotally 9' connected by pin I15 (Figures 1 and 3) to cam roller arm I10 above cam roller I12. Rod I14 extends upwardly and is pivotally connected to an arm I16 (Figure by a pin I'Ita. Arm I16 has a hub I81 which is mounted on a shaft I'I'I extending transversely across the machine and which has another arm I83 (Figures 1 and 5) extending forwardly therefrom across the machine. A link I13 (Figure 1) is pivotally connected to the forward end of arm I85] and extends vertically thereabove. Link I18 is pivotally connected by pin I82 to a bracket I83 connected to the upper end of rod 85 (Figure 4) by set screw I83a. A spring I19 (Figure 1) connected to arm I89 and the framework of the machine resiliently urges arm I80 downwardly. Thus, cam I14 coacting with spring I19 moves rod 85 upwardly and downwardly as the cam lid is turned by shaft I40.

Referring to Figure 5, a cam I84 is mounted on shaft I40 adjacent cam I13. A cam roller arm I85 (Figures 1, 3 and 5) having upper and lower arm portions 35a and I851) (Figure 1) extending above and below cam I 84 is pivotally mounted on a shaft I35 (Figure 1) extending transversely across the machine. Portion I851) has a cam roller I88 (Figures 1 and 5) mounted thereon adjacent the end thereof. This cam roller coacts with a spring (not shown) resil-- iently urging arm I85 upwardly to move rod I39 (Figures 1 and 5) upwardly and downwardly as the cam rotates. Rod I89 is pivotally connected by pin I92 (Figure 5) to the center portion of an arm I90 (Figures 1 and 5). Arm I52 is pivotally mounted by hub I83 (Figure 5) on a shaft I31 extending transversely across the rear of the machine. The forward end of arm I92 (Figures 1 and 4) has a yoke I94 (Figure 4) thereon, the arms of which extend around sleeve 82 to engage pins 82a and 821). Thus, the reciprocating action of rod we is transmitted through arm I95 to sleeve 82 (Figure 4) to move the die member 84 connected to its lower end upwardly and downwardly.

Referring to Figure 4, rod I8 of plunger assembly I1 is operated by cam 200 (Figure 5) through mechanism similar to the mechanism operating rod 85. This mechanism includes a cam roller arm 2M which actuates arms 203 and 254 through a rod 202. Cam 2M coacts with a spring (not shown), which resiliently urges arm 254, and thus rod 202, downwardly, to cause rod 13 to move upwardly and downwardly with respect to slide plate I3 (Figure 4). The sleeve 68 (Figure 4) of plunger assembly I1 is actuated by a cam 205 (Figure 5) through a cam roller arm 206 which is similar to arm I85 (Figure 1), a cam roller 236a, a rod and an arm 20!] operatively connected by a yoke 259 (Figure 4) to sleeve pins 11 and I2. Cam 235 coacts with a spring (not shown) resiliently urging cam roller arm 206 upwardly to move the sleeve 63 upwardly and downwardly.

Thus, plunger assemblies I4 and I! (Figure 4) are actuated by cams mounted on shaft I48 (Figure 5). The high portions of these cams are positioned on opposite sides of shaft I43, thus causing plunger assembly H to be at the bottom of its stroke when plunger assembly I5 is at the top of its stroke and plunger assembly I I to be at the top of its stroke when plunger assembly I4 is at the bottom of its stroke. Furthermore, each plunger assembly moves downwardly and upwardly once during each revolution of shaft I 40.

The rod and sleeve of plunger assembly II (Figure 4) are actuated by cams 210 and 2 (Figure 5), respectively, which are keyed to'shaft I64. A cam roller arm 2I3 (Figures 2 and 5), which is similar in construction to earn roller arm I10 (Figure 3) is pivotally mounted on shaft I 86 (Figure 3) extending transversely across the machine. This cam roller arm 2H3 has a cam roller 2 I4 which rides upon the periphery of cam 210. A rod 2I5 is pivotally connected to the forward end of cam roller arm 213 above cam roller 2| 4 by a pin 2I5a. The upper end of rod 215 (Figures 1 and 5) is pivotally connected to the end of arm 2I5 by a pin 2I3a (Figure 5). Arm 2I6 is pivotally mounted on shaft IT! by a hub 211 and is connected through this hub to an arm 218 (Figures 1 and 5) which extends forwardly across the machine. The forward end of this arm is pivotally connected to a link 2I9 (Figure 1), the upper end of which is pivotally connected by a pin 222 to bracket 22I. Bracket 22I (Figure 4) is connected torod 49. by set screw 222.

Sleeve 39 is driven by a cam roller arm 223 (Figures 2 and 5) which is similar in construction to cam roller arm III! (Figure 3) and is pivotally mounted on shaft I85. The forward end of cam roller arm 223 carries a cam roller 224 adapted to ride on the periphery of cam 2. A rod225 (Figures 1, 3 and 5) extends vertically above cam roller arm 223 and is pivotally connected to the forward end of cam roller arm 223 by a pin 223a. The upper end of rod 225 is pivotally connected to the center portion of arm 226 (Figures 1 and 5) by a pivot pin 225a. ,Arm 226 is pivotally mounted on shaft, ISI, and its forward end carries a yoke 22'! (Figures 1 and 4) the arms of which extend around sleeve 39 and engage

pins

43 and 44. Spring means (not shown) is provided to resiliently urge arm 226 and thus rod 225 downwardly. Thus, cam 2| I acting in conjunction with the spring means serves to move sleeve 33 upwardly and downwardly during operation of the machine. As shaft I64 is driven at twice the rate of shaft MI), plunger assembly I'I moves downwardly two times for each downward movement of either plunger assembly I I or plunger assembly I1.

For actuating the die twist or primary female die rotating mechanism of the die member 45 positioned beneath plunger assembly II (Figures 3 and 4), a cam 228 (Figure 5) is mounted on shaft I34. This cam coacts with a cam roller 229 (Figure 3) mounted on a cam roller arm 230 (Figures 2 and 5 which is pivotally mounted on shaft I86. A link (55, which is pivotally connected at its upper end to bracket 65 (Figure 3), is pivotally connected to the forward end of arm 230 by a pin 230a, Cam 228 (Figure 5) acting through cam roller 29 (Figure 3), cam roller arm.

230, and link 55 serves to twist die 43 each time shaft I64 makes a revolution. This rotative or twisting action, which is effected through bell crank 63 and arm 53 as described hereinabove, is timed so that die 48 is twisted or rotated in relation to male die 45 when said die member 45 is seated in die 48.

Referring to Figure 3, positioning finger 33 is actuated by link 35, as described hereinabove. The lower end of link 25 is pivotally connected by pin 35a (Figures 1 and 3) to one arm of a, bell crank 2411. Bell crank 245 is pivotally mounted on the framework of the machine by pin 240a, and its other arm is pivotally connected by a pin 24Gb to a link 23I (Figure 1) Link 23Iextends as viewed in this figure.

rearwardly in the machine around shaft I64 and has a cam roller 232 on its rear end. Thiscam roller rides on a cam 233 (Figure keyed to shaft I54. A spring 23d (Figure 1) connected to the lower armof bell crank resiliently urges the bell crank to move in a clockwise direction, Thus, cam 233 (Figure 5) coacting with spring 2% (Figure 1) serves to actuate link (Figure 3) to move positioning finger 33. As cam 233 (Figure 5) is mounted on the same shaft as the cams actuating plunger assembly l I, movement of positioning finger 33 is timed to position a blank beneath the die member 46 of plunger assembly I 5 before each downward stroke of die member it (Figure 3).

As described hereinabove, slide plate l3 (Figure 1) is moved with a reciprocating action by rocker arm 99 and cam Hi2. Cam N32 is mounted on shaft 1553 (Figures 1. and 5) which is turned through helical gears I68 and Hill. As helical gears use and I 37 are of the same size, shaft I69 makes a complete revolution for each revolution of shaft I40 (Figure 5). As shaft I controls the movements of plunger assemblies I 4 and Il and as shaft 169 makes a revolution for eachrevolution of shaft Mil, the movement of slide plate [3 (Figure 1) by rocker arm 99 is timed so that it shifts twice for each revolution of shaft Ml! (Figure 5).

In operation, blanks are fed from. hopper Ill (Figure 3) by the feeding mechanism beneath the plunger assembly II. Positioning. finger 33 at this time comes up and pushes the blank inwardly so that its rear edge contacts Vertical guide plate'36 (Figure 4). During this time the suction supplied by hose 08 through rod 85 of plunger assembly [4 (Figure 4-) is released, and the cup on male die 87 drops on delivery tray l5. Also, at the same time plunger assembly I1 is moving, downwardly to seat its die in-the female die assembly is and fold a lip on the edge of the pleated blank in the die assembly. Plunger assembly ll moves downwardly until die member 46 seats in die 43. Then die 48 is twisted by arm 60 (Figure 1) and the mechanism connected thereto to pleat the side wall of the cup. Next the rod 49 of. plunger assembly H moves downwardlyto place the pleated blank in the female die assembly 12 positioned therebeneath, after which plunger assemblies M and I? move upwardly, plunger assembly l'i carrying a completed cup with it by suction. Then. rocker arm 99 (Figure 1) shifts slide plate l3 (Figure 4) to the left, as viewed in this figure, placing the pleated blank in die assembly 1'2 beneath plunger assembly I4 and carrying the completed cup on delivery tray IE to a position in front of pusher member 20 (Figure 2). The delivery tray I8 moves beneath plunger assembly ll, and female die assembly it moves beneath plunger assembly l l. During the next period, the cup on plunger assembly I1 is dropped on delivery tray is; the blank beneath plunger H is pleated and then positioned in female die assembly it; and the pleated blank in femaledie assembly 52 is formed betweendies 81 and IE6, a lip being placed thereon by the grooves in die members 84 and l l 3. At this time delivery tray 85 is positioned in front of pusher member 20 (Figure 2), and the pusher member moves the completed cup from this tray into thedelivery chute. The cams on shafts Mil, H54 and H59 are all timed to actuate their related mechanisms in lglieproper sequence to insure the above operaion.

Thus a cup-forming machine and met d 0 ,forming cups has been disclosed by which cups the scope of the invention, it is to be understood that all matter hereinaboveset forth or shown in the accompanying drawings is to be interpretedv as illustrative and not in a limiting sense.

I claim:

1. In a cup-forming machine, in combination, a primary male die assembly, a primary female die assembly in fixed co-axial relation thereto a secondary male die assembly, means for actuating said die assemblies, a secondary female die assembly movable to and from operative coaxial relation to said primary and said secondary male die assemblies, means for. moving. said secondary female die assembly to alternately position it beneath said primary and secondary male die assemblies, and. meansfor feeding blanks to said primary male and female die assemblies, said primary male die assembly having portions coacting with said primary female die assembly to shape certain portions of a blank, and other portions'movable to convey said partly shaped blank from said primary male and female die assemblies into operative position in relation. to said seconolary female die assembly said. secondary female die assembly, then moving said partly shaped blank into operative position in relation to said secondary male die assembly. which'then coasts with said secondary female die assembly to complete the formation of the cup.

2. In a cup-forming machine, in combination, a primary male die assembly, a secondary male die assembly, means for actuating said die assemblies, a primary female die assembly, a secondary female die assembly movable to and from operative co-aXial relation thereto, means for moving said secondary female die assembly to alternately position it thereto said secondary-male die assembly and said primary male and female die assemblies, means for feeding blanks to said primary male and female die assemblies, said primary male" die assembly having portions coasting with said primary female die assembly to shape portions of a blank and other portions to move the shaped blank from said primary male and female die bly, and tray means mounted to move with said secondary female die assembly, said tray means being positioned beneath said secondary male die assembly when said secondary female die as-' sembly is positioned beneath said primary die assembly, said cup removing means being adapted to drop the completed cup removed from said secondary female die assembly on said tray. at the same time a blank is being shaped by said primary male and female die assemblies.

3. In a cup-forming'machine, in combination,

in operative relation' a primary male die assembly, a secondary male die assembly, means for actuating said die assemblies, a primary female die assembly, a secondary female die assembly, means for moving said secondary female die assembly to alternately position it beneath said secondary male die assembly and said primary male and female die assemblies, means for feeding blanks initially to said primary male and female die assemblies, said primary male die assembly having portions coacting with said primary female die assembly to shape portions of a blank and other portions to move said shaped blank from said primary male and female die assemblies into operative relation to said secondary female die assembly, said primary female die assembly then moving said shaped blank beneath said secondary male die assembly which then coacts with said secondary female die assembly to complete the formation of the cup, suction means on said secondary male die assembly for removing the completed cup from said secondary female die assembly, tray means mounted to move with said secondary female die assembly, said tray means being positioned beneath said secondary male die assembly when said secondary female die assembly is positioned beneath said primary male die assembly, said suction means being adapted to drop the completed cup removed from said secondary female die assembly on said tray when a blank is being shaped by said primary male and female die assemblies, and means for removing said cup from said tray when said secondary female die assembly is positioned beneath said secondary male die assembly.

4. In a cup-forming machine, in combination, a primary male die assembly, a primary female die assembly in fixed co-axial relation thereto a secondary male die assembly, means for actuating said male die assemblies, a slidable die carrier, a secondary female die assembly mounted thereon, means for moving said carrier with a reciprocating action to alternately position said secondary female die assembly beneath said primary and said secondary male die assemblies, and means for feeding blanks initially to said primary male and female die assemblies, said primary male die assembly coacting with said primary female die assembly to shape portions of a blank, means for moving said blank from said primary male and female die assemblies into operative engagement with said secondary female die assembly, and said secondary female die assembly on being moved by said carrier into operative relation to said secondary male die assembly coaoting therewith to complete the formation of the cup.

5. In a cup-forming machine, in combination, a primary male die assembly having a seating head and a primary male die member, a secondary male die assembly, means for driving said male die assemblies a primary female die assembly, a secondary female die assembly, and means for alternately positioning said secondary female die assembly beneath said secondary male die assembly and said primary male and female die assemblies, said secondary male die assembly having portions adapted to move upwardly and downwardly with respect to and coacting with said secondary female die assembly, said secondary female die assembly including a rigidly mounted center bottoming anvil member and a rim forming die member mounted thereon for vertical movement with respect thereto, said seating head being arranged and adapted to move toward said anvil independently of said primary male die member said secondary male die assembly including an inner bottoming die member for coacting with said center bottoming anvil member and an outer rim forming die member for coacting with said first mentioned rim forming die member, said inner bottoming die member being movable independently of said second mentioned rim forming die member, whereby said secondary male die assembly and said secondary female die assembly cooperate to effect two shaping operations on a cup blank during one downward movement of said secondary male die assembly.

6. In a cup-forming machine, in combination, a primary male die assembly, a secondary male die assembly, means for actuating said. die assemblies, a primary female die assembly, a secondary female die assembly, means for moving said secondary female die assembly with a reciprocating action to alternately position it beneath said primary and secondary male die assemblies, means for feeding a blank beneath said primary male die assembly, said primary male die assembly including an outer die member and an inner seating member movable independently of each other, said primary female die assembly coacting with said outer primary male die member to former portions of the blank and said secondary female die assembly coacting with the secondary male die assembly to form other portions of said cup, means for preventing rotational movement of said outer male die member, and means for rotating said primary female die assembly in relation to said outer primary male die member, whereby said primary female die assembly and said outer primary male die member co -act to pleat side Wall portion of a blank, and means for moving said blank from said primary female die assembly into operative relation to said secondary female die assembly, said shaped blank being then moved with said secondary female die assembly into operative position beneath said secondary male die assembly which then coacts with said secondary female die assembly to complete the formation of the cup.

'7. In a cup-forming machine, in combination, a primary male die assembly, a pair of secondary male die assemblies, means for actuating said primary and secondary male die assemblies, a primary female die assembly, a pair of secondary female die assemblies, means for shifting said secondary female die assemblies in unison with a reciprocating action to alternately position each of said secondary female die assemblies first under said primary male and female die asseme blies and then under one of said secondary male die assemblies, means for feeding blanks beneath said primary male die assembly, said primary male die assembly initially forming portions of said blanks with said primary female die assembly, and means for moving a partly formed blank from said primary male and female die assemblies into operative relation to one of said secondary female die assemblies, said secondary female die assemblies, on shifting with :a partly formed blank to operative position beneath a secondary male die assembly, completing the formation of the blanks.

8. In a cup-forming machine, in combination, a primary male die assembly, a pair of secondary male die assemblies, means for actuating said primary and secondary male die assemblies, a slidably mounted die assembly carrier, a pair of secondary female die assemblies mounted on said carrier, means for moving said carrier with a reciprocating action to alternately position each of sad secondary female die assemblies first under said primary male die assembly and then under one of said secondary male die assemblies, means for feeding blanks beneath said primary male die assembly, means cooperating therewith to form portions of said, blanks, and means for moving said formed blanks from said primary male die assembly and into operative position in relation to one of said secondary female die assemblies said primary male die assembly alternately forming portions of said blanks while on of said secondary female die assemblies forms other portions of said blank beneath one of said secondary male die assemblies whereby formation of the blanks into cups is completed.

v9. In a cup-forming machine, in combination, a primary male die assembly, a pair of secondary male die assemblies, means for driving said primary and secondary male die assemblies, a pair of primary female die assemblies, a secondary female die assembly positioned beneath said primary male die assembly, means for feeding blanks between said primary male die assembly and said secondary female die assemblies, said primary male die assembly including two porticns movable with respect to each other, one of said portions coacting with said secondary female die assembly to form portions of blanks and the other of said portions then coacting with each of said primary female die assemblies in turn to form other portions of blanks, means for moving said primary female die assemblies in unison with a reciprocating action to alternately position each of said primary female die assemblies first under said primary male die assembly and then under its related secondary male die assembly, each of said female die assemblies on shifting positioning the partly formed blanks carried by them beneath their respective secondary male die assembly with which they coact to complete the formation of a cup while said primary male die assembly is coacting with said secondary female die assembly and the other primary female die assembly to form another blank.

10. In a cup-forming machine, in combination, a primary male die assembly, a pair of secondary male die assemblies, means for driving said primary and secondary male die assemblies, a pair of primary female die assemblies, a secondary female die assembly positioned beneath said primary male die assembly, means for feeding blanks between said primary male die assembly and said secondary female die assemblies, said primary male die assembly including two portions movable with respect to each other, one of said portions coacting with said secondary female die assembly to form portionsof blanks and the other of said portions then coacting with each of said primary female die assemblies in turn to form other portions of blanks, means for preventing rotational movement of said primary male die assembly with respect to said secondary female die assembly, and means for twisting said secondary female die assembly with respect to the outer portion of said primary male die assembly whereby the outer portion of said primary male die assembly and said secondary female die assembly coact to pleat a blank when they are in seated relationship with respect to each other, means for, moving said primary female die assemblies in unison with a reciprocating action to alternately position each of said primary female die assemblies first under said primary male die assembly and then under its related secondary male die assembly, each of said female die assemblies on shiftingpositioning the partly formed blanks carried by them beneath their respective secondary male die assembly with which they coact to complete the formation of a cup while said primary male die assembly is coacting with said secondary female die assembly and the other primary female die assembly to form another blank.

11. In a cup-forming machine, in combination, a primary male die assembly, a pair of secondary male die assemblies, means for driving said primary and secondary male die assemblies, a pair of primary female die assemblies, a secondary female die assembly positioned beneath said primary male die assembly, means for feeding blanks between said primary male die assembly and said secondary female die assemblies, said primary male die assembly including two portions movable with respect to each other, one of said portions coacting with said secondary female die assembly to form portions of blanks and the other of said portions then coacting with each of said primary female die assemblies in turn to form other portions of blanks, slide means, means mounting said primary female die assemblies on said slide means, means moving said slide means with a reciprocating action to alternately position said primary female die as semblies under said primary male die assembly, each of said female die assemblies on shifting positioning the partly formed blanks carried by them beneath their respective secondary male die assembly with which they coact to complete the formation of a cup while said primary male die assembly is coacting with said secondary female die assembly and the other'primary female die assembly to form another blank, and means on said secondary male die assemblies for removing completed cups from said primary female die assemblies.

12. The method of forming paper cups which includes the steps of: feeding a blank between a primary male die assembly and a female die assembly, forming portions of the blank between said primary male die assembly and said female die assembly, shifting the partly formed blank in said female die assembly beneath a secondary male die assembly, completing the formation of said blank between said secondary male dieassembly and aid female die assembly, feeding another blank beneath said primary die assembly as said first female die assembly is shifted, forming portions of this blank between said primary die assembly and a second female die assembly as said first blank is being formed'between said secondary male die assembly and said first female die assembly, and shifting said second female die assembly with the partly formed blank therein beneath another secondary male die assembly as said first female die assembly is shifting back under said primary die assembly and completing the formation of said second blank between said second female die assembly and said second male die assembly.

13. The method of forming paper cups which includes the steps of: feeding a blank between a primary male die assembly and a female die assembly, forming portions of the blank between said primary male die assembly and said female die assembly, shifting the partly formed blank in said femaledie assembly beneath a secondary male die assembly, completing the formation of said blank between; said secondary, male die assembly and said female die assembly, removing completed cups from said female die assembly and dropping the completed cup on a tray moving in unison with said female die assembly when said female die assembly moves back under said primary male die assembly, feeding another blank beneath said primary die assembly as'said first female die assembly isshifted, forming portion of this blank between said primary die assembly and a second female die assembly as said first blank is being formed between said secondary male die assembly. and said first female die assembly, and shifting said second female die assembly with the partly formed blank therein beneath another secondary male die assembly as said first female die assembly is shifting back under said primary die assembly and completing the formation of said second blank between said second female die assembly and said second male die assembly. a

14. In a cup forming machine, the combination of a primary male blank forming die member, a primary female blank forming die member mounted in fixed co-axial relation therewith, means for moving said primary male blank forming die member toward and from said primary female blank forming die member, a blank seating member mounted concentrically with said primary male blank forming die member and movable therewith toward and independently thereof beyond said primary female blank forming die member, a secondary blank forming female diemember movable into and out of operative position in relation to said blank seating member, and means for moving said seating member independently of said primary male blank forming die member beyond said primary female blank forming die member and toward said secondary blank forming female die member when the latter is in operative relation tosaid blank seating member.

15. In a cup forming machine, the combination of a primary male blank forming die member, a primary female blank forming die member mounted in fixed co-axial relation therewith and rotatable in relation thereto, means for moving said primary male blank formingdie member toward and from said primary female blank forming die member, means for rotating said primary female blank forming die member, a blank seating member mounted concentrically with said primary male blank forming die member, and means operatively interposed between said last mentioned members and arranged and adapted to lock said primary male die member against rotation when said primary female die member is rotated.

16. In a cup forming machine the combination of a male die assembly including a bottoming die and a first rim forming die concentric therewith, a female die assembly having a rigidly mounted bottoming anvil member and a second rim forming die concentric therewith, means for moving said male die assembly toward said female die assembly, and means for moving said central bottoming die independently of said first rim forming die toward said rigidly mounted central bottoming anvil member.

1'7. In a cup forming machine, the combination of a primary male die assembly, a secondary male die assembly, means for actuating said die assemblies, a primary female die assembly, a die assembly carrier, a pair of secondary female die assemblies mounted thereon in spaced relation, means for moving said carrier with a reciprocating action to alternately position one or the other of said secondary female die assemblies beneath said primary and secondary die assemblies respectively, means for feedin blanks beneath said primary, male die assembly, said primary male die assembly including an outer die member andan inner seating member movable independently of each other, said primary female die assembly coactingwith said outer primary die member to form portions of a blank and saidinner seating member operating to seat the blank in one of said secondary female die assemblies, and means for moving said die carrier whereby said secondary female die assembly is shifted with said shaped blank to an operative position beneath said secondary male die assembly and the other of said secondary female die assemblies is shifted to an operative position beneath said primary male die assembly.

18. In a cup forming machine, the combination of a pair of spaced secondary male die assemblies, a primary male die assembly arranged between said secondary male die assemblies, means for actuating said primary and secondary male die assemblies, a slidably mounted die carrier, a pair of secondary female die assemblies mounted on said carrier and movable. with reciprocating motion thereof to alternately position one and then the other of said secondary female die assemblies first under said primary male die assembly and then under one of said secondary male die assemblies, means forfeeding blanks cooperative position in relation to said primary male die assembly, a primary female die cooperating with portions of said primary male die assembly to form certain parts of said blanks and 'means cooperating with other portions of said primary die assembly to move said formed parts of said blanks into seating engagement with one of said secondary female die assemblies, means for shifting said carrier in one direction to position one of said secondary female die assemblies and the partly formed blank in operative relation to one of the secondary male die assemblies where the formation of the cup from the blank is completed, and in the opposite direction to position the other of said secondary female die assemblies in operative relation to the other of said secondary male die assemblies, and means on each of said secondary male die as semblies for removing completed cups from said secondary female die assemblies. if

19. In a cup-formingmachine, in combination, a primary male die assembly, a pair of secondary male dieasseinblies; means fordriving said primary and secondary male die assemblies, a pair of secondary female die assemblies, a primary female die assembly positioned beneath said primary male die assembly, means for feeding blanks between said primary male and female die assemblies, said primary male die assembly including two portions movable with respect to each other, one of said portions co-acting with said primary female "die assembly to form portions of blanks and the other of said portions then co-acting with each of said secondary female die assemblies in turn to move said blanks into seated engagement therewith, meansfor moving said secondary female die assemblies in unison with a reciprocating action to alternately position each of said secondary female die assemblies first under said primary male die assembly and then under its related secondary male die assembly, each of said secondary female die assemblies, on shifting, being arranged and adapted to position the partly formed blanks carried by them opposite their respective secondary male die assemblies with which they co-act to complete the formation of a cup while said primary male die assembly is co-acting with said primary female die assembly and the other sec-- ondary female die assembly to form and seat another blank.

20. In a cup-forming machine, in combination, a primary male die assembly, a pair of secondary male die assemblies, means for driving said primary and secondary male die assemblies, a pair of secondary female die assemblies, a primary female die assembly positioned beneath said primary male die assembly, means for feeding blanks to said primary male and female die assemblies, said primary male die assembly including two portions movable with respect to each other, one of said portions coacting with said primary female die assembly to form portions of blanks and the other of said portions then coacting with each of said secondary female die assemblies in turn, means for preventing rotational movement of said primary male die assembly with respect to said primary female die assembly, and means for twisting said primaryfemale die assembly with respect to the outer portion of said primary male die assembly whereby the outer portion of said primary male die. assembly and said primary female die assembly coact to pleat a blank when they are in seatedrelationship with respect to each other, means for moving said secondary female die assemblies in unison With a reciprocating action to alternately position eachof said secondary female die assemblies first under said primary male die. assembly and then under its re: lated secondary male die assembly, each of said secondary female die assemblies, on shifting, positioning the partly formed blanks carried by them beneath their respective secondary male die assemblies witl'l'Which they coact to complete the formation of a cup while said primary male die assembly is coacting with saidprimary female die assembly and the othersecondary female dieassembly to form another blank. I

21. In a cup-forming machine, in combination,-

a primary male die assembly, apair of secondary male die assemblies, meansfor driving said pri mary and secondary male die assemblies, a pair of secondary female die assemblies, a primary female die assembly positioned beneath said prie 20 male die assembly to form portions of blanks and the other of said portions then coaoting with each of said secondary female die assemblies in' turn, slide means, means mounting said secondary female die assemblies on said slide means, means moving said slide means with a reciprocating action to alternately position said secondary female die assemblies under said primary male die assembly, each of said secondary female die assemblies, on shifting, positioning the partly formed blanks carried by them beneath their, respective secondary male die assemblies with which they coact to complete the formation of a cup while said primary male die assembly is coacting with said primary female .die assembly and the other secondary female die assembly to form another blank, and means on said secondary male die assemblies for removing completed cups fromsaid secondary female die assemblies.

22. The method of forming paper cups which includes the steps of: feeding a first blank between primary male and female die assemblies, forming portions of the blank between said primary male and. female die assemblies, shifting the partly formed blank from said primary female die assembly to a secondary female die assembly, completing the formation of said blank between a secondary male die assembly and said secondary female die assembly, feeding another blank to said primary male and female die assemblies as said first blank is shifted, forming portions of said other blank between said primary male and female die assemblies as said first blank is being completed and shifting said other secondary female die assembly with the partly formed blank therein beneath another secondary male die assembly, as said first secondary female di assembly is shifting back under said primary male and female die assemblies, and completing the formation of said second blank between said other secondary female die assembly and said other secondary male die assembly. 7 I

23. In a cup forming machine, the combination of spaced secondary male die assemblies, a primary male die assembly mounted between said secondaries, a reciprocatable die carrier, means for reciprocating said carrier, spaced secondary female dies mounted on said carrier, each movable therewith into and out of operative relation to said primary die assembly and one of said secondary die assemblies, means for effecting blank forming operation of said primary and said secondary die assemblies, and means operatively connected therewith and with said carrier reciprocating means to feed blanks to said primary die assembly between successive reciprocative movements of said carrier.

EUGENE vCorrrr.