US2479050A - Paper can making machine - Google Patents

Description

1949- M. H. SIDEBOTHAM 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet l Ffgi/ 90 Aug. 16," 1949. M. H. Sl DEBOTHAM V 2,479,050

" PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet 2 IN V EN TOR.

M. H. SIDEBOTHAM I PAPER CAN MAKINGMACHINE Aug. 16,1949.

9 Shets-Sheet 3 Filed March 21, 1945 Aug. 16, 1949.

Filed March 21, 1945 M. H. SIDEBOTHAM PAPER CAN MAKING MACHINE 9 Sheets-Shet 4 Aug. 16, 1949: I M. H. SIDEBOTHAM 2,479,050 I PAPER CAN MAKING MACHINE Filed March 21, 1945 v 9 Sheets-Sheet 5 BY Maw/# My Aug. 16, 1949. M. H. SlDE BOTHAM 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet 6 HF Mm A fv r m w 5 M m V f N Aug} 16, 1949. v M. H. SIDEBOTHANI- 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 9 Sheets-Sheet '7 Fly /4- BY W a/ My Aug. 16, 1949. M. H. SIDEBOTHAM IAPER CAN MAKING MACHINE 9 Sheets-Sheet 8 Filed March 21, 1945 mm W W A, V N m m 0 l m. m w V 8 NW 1949- I M.IH. SIDEBOTHAM 2,479,050

PAPER CAN MAKING MACHINE Filed March 21, 1945 v 9 Sheets-Sheet 9 IN V EN TOR.

Mm fla /95mm BY W M 4795/.

Patented Aug. 16, 1949 UNITED STATES PATENT OFFICE 2,479,050 PAPER CAN MAKING MACHINE Melvin n. Sidebotham, Newton, Mass. Application March 21, 1945, Serial No. 583,973

15 Claims. (01. 93-292) This invention relates to apparatus for producing round, paper containers by a sequence of op erations.

More particularly the invention relates to improvements in machines for making round paper containers by assembling together two cylindrical sleeves and securing a bottom element in one end of the assembled sleeves.

My invention consists in novelties of construction and in the coordination of novel devices. I do not confine my invention to the form shown, as changes in construction and operation may be made without departing from the spirit of my invention.

The embodiment of my invention described and claimed in this present application contemplates the production by automatic machinery of paper containers by the method described in my copending application Serial No. 556,345, filed September 29, 1944 which has become abandoned. However, my present invention is not limited to machines for producing containers by the particular method described in said copending application.

One object of my invention is to provide a machine for assembling one cylindrical paper sleeve over another cylindrical paper sleeve and then securing a paper bottom to one end of the sleeve assembly.

Another object of my invention is to provide a machine which will, by a sequence of operations produce cylindrical paper containers singly, successively and continuously, in a rapid, economical and efiicient manner.

Other more specific objects and advantages of the invention will be apparent to persons skilled in the art as the same becomes better understood by reference to the following description, taken in connection with the accompanying drawings, in which I have illustrated one practical embodiment of my invention, and. wherein:

Figure 1 is a front elevation of the machine.

Figure 2 is a partial section at 22 of Figure 3.

Figure 3 is an elevation of the turret assembly.

Figure 4 is a partial section at 4-4 of Figure 1.

Figure 5 is a partial section at 5-5 of Figure 1.

Figure 6 is a partial section at 6-43 of Figure 1.

Figure 7 is a front elevation of the apparatus for placing cylindrical paper sleeves over the mandrels of the machine.

Figure 8 is a side view of Figure 7. A

Figure 9 is a front view of themechanlsm which cuts a bottom disc element from a web and inserts the bottom disc element into the end of a cylindrical paper sleeve.

Figure 10 is a side elevation of Figure 9 with a portion cut away to more clearly illustrate the bottom assembling mechanism.

Figure 11 is a front elevation of the device for crimping inwardly ends or" the cylindrical sleeves. Figure 12 is a side view of Figure 11. V

Figure 13 is a front view ofthe device for removing the completed paper container from the mandrel of the machine.

Figure 14 is a side view of Figure 13.

Figure 15 is a plan view of one of the mandrels on which the paper containers are formed.

Figure 16 is a front elevation of Figure 15.

Figure 17 is a planviewoi a mandrel with an inner paper-sleeve positioned thereon. H

Figure 18 is a plan view of the mandrel with an inner paper sleeve positioned thereon, and with a bottom disc assembled within the end of the said sleeve; a portion of the bottom former ring 98 and bottomiormer block I05 are also shown. Figure 19 shows the end edge of the cylindrical paper sleeve turned inwardly over the bottom element; a portion of the crimping tool 35 for turning the end edge of the sleeve is also illustrated. 7

Figure'20 is a plan view of a mandrelwith two comp t d p p r can mounted on a mandrel of the machine; the tool 35 for crimping the ends of the assembled paper sleeves over the flanged edges of the bottom closure is also shown.

Figure 22 is a side view of the cylindrical paper sleeve which comprises the inner member of the Figure 21 is a plan view of the paper container.

Figure 23 is an end view of Figure 22. Figure 24 is an edge view'of the paper disc from which the bottom on the container is formed.

Figure 25 is a side view of the bottom disc shown in Figure 24.

Figure 26 is a side view of the bottom disc formed to provide a flange thereon.

Figure 27 is an end view of Figure 26. Figure 28 is a side view of the inner sleeve with the flanged bottom disc assembled therein.

Figure 29 is an end view of Figure 28. Figure 30 is thesame as Figure 28 except that one end of the sleeve is turned slightly inward over the flanged bottom disc.

Figure 31 i an end viewof Figure 30.

Figure 32 is a side view of the outer, cylindrical sleeve of the paper container. 7 v

Figure 33 is an end view of Figure 32.

Figure 34 is a side view of the assembly shown shaft ill. .is slidably secured to thedriveshaft NJ. The ex- "ternal clutch member ifi'is drivenby the internal in Figure 30 positioned within the sleeve shown in Figures 32 and 33.

Figure 35 is an end view of Figure 34.

Figure 36 is a side view of the completed paper container.

Figure 3'7 is an end view of Figure 36.

Figure 38 is a partial section at 38-38 of Figure 36.

Similar reference characters indicate .similar parts or features in all of the views.

It will aid toward an understanding of the operation of the machine and of the method-of fabricating the cylindrical paper containers to first generally the action ef the machine which efiects the production of cylindrical paper containers by a sequence of operations.

Cylindrical paper sleeves I t-Fligs. [22 sand 23) are placed in a supply hopper 56 (Figs. 1 and .8). From the said supply hopper 56, the paper tubes are fed, by gravity, singly and successively into position to be thrust horizontally over a mandrel. The said mandrel is one of six similar mandrels mounted on a-turret which is horizontally pivoted and so actuated as to move each mandrel successively from one position to another until a paper container is completed and deposited in a receiving hopper.

From the position where the paper sleeve '5 is pressed over one of the man'drels 49, the turret 6 revolves horizontally to move the paper sleeve l into position to receive the bottom disc 2 which is cut from a web and'then formed to provide a flange 3 (Figs. 24 to '29 inclusive).

The mandrel is neXt'moved-t'o a position where the end edges of'the-s'leeve 1 are turned slightly inward as shown in Figs. 19, '30and 31.

The next operation consists' in sliding an-outer paper sleeve '4 (Figs. 32 and 33) over the inner paper sleeve I, as-shown in Figure '20.

The sleeve assembly is then movedto a positionto inwardly crimp theadja-cent ends of the sleeves and i-over the "flange 5 3 of the bottom '2, to complete the paper container as shown in Figures 21, 36. and37.

The turret then operates to move the mandrel, carrying the completed can, to a position where the container is removed "from the mandrel. The

"mandrel is then movedto the first station to receive another paper sleeve l'to begin'another cycle of operations.

M achz'ne frame and machineopemting mechanism completemachin-e are supported'by a baseframe 5 having a'horizontally rotatable turret-.fiwmounted -on itsupper' structure.

Mounted within the base of frame =5 is-an elec -.tric motor '1 for driving the machine. The said motor 7 is operated continuouslywhile the machine is in use. ,-A pinion .8 (Fig. 6) .mounted .onthe shaft of .the .motor meshes .withedrive gear 9 secured to driveshaft iiljournaledin frame 5. A flywheel H is securedto. one end of the drive Afriction clutch internal.member i2 clutch member l2 operating in the conventional manner. Integral with the external clutch member 53 is a pinion M which meshes with gear I5 journaled on shaft l8 (Fig. 5). A chain sprocket'l'l is integrally joined to gear'l5. The

-chain sprocket ll servesby-means of chain i9 4. to drive chain sprocket i8 (Fig. 4) secured to shaft 29. Also secured to said shaft 20 is a bevel gear 25 which operates in the conventional manner to drive bevel gears 22, 23, 24, 2'5 and 26 which are secured to shafts 27, 28, 29, 3G and 3! respectively.

Shaft 28 (Fig. 4) drives the mechanism shown in Figures 7 and 8 for positioning a tubular paper sleeve 1 (Fig.22) over ,themandrel Min the first operation .for producing the papercontainer described in Figures 22 to 38 inclusive.

Secured to shaft 29 (Fig. 4) is a chain sprocket 32 which operates to drive mechanism, not nec- -;essary to describe, for causing the horizontally rotatable turret 6 (Figs. 2 and 3) to rotate for moving the Work carrying mandrels secured ithereto, progressively to the several stations which operate to produce the paper container described. Also secured to and driven by shaft 29 (Fig. 4) are cams 83 and 34 which operate the -n1echanism shown .in Figures 9 and 10 lfOI die snandrel. Amotor '33 isiprovided-with..a1beltipul- *1ey 34 which by means ofbelt 3,6. drivestthe crimpiing tool 35, to turn slightly inwardlyfthe end of :the tubular sleeve Lover therflange-S ofthe bottom disc 2.

*Shaft'Si (Fig.4) operates to-drive'mechanism such as isshown in'Figuresl'l and 8 which operates to feed a tub-ularsleevei (Figs. '32.and.'33) over thetubular sleeve i positioned .on ;the-.man drel. 'Thismechanismis-the same as themeclia- 'nism operated by shaft1Z8 foriplacing.thetubular sleeve I on the mandrel. '"The only difference "between the mechanismsdrivenby shafts-: zfiand 3! is that the 'mechanism driven by shaft 31 is made to handle a paper sleeve of slightlyilarger dimensions. At this stage of productionthe container is in the condition illustrated "by Figures 34and'35.

Shaft 25 (Fig. 4) serves to drive mechanism of the same character as shown in Figures 11 and '12, previously described as driven byshaft 39. The only difference between :the mechanisms driven by shafts 3i! and '28 is that the crimping :tool 35- in the latter instance is pressed further against the tube assembly on the-mandrel, to

firmly crimp'the adjacent endsof the tubes and 4-against the flange 3 of the disc 2,to complete :the paper canes illustrated by'Figures 36-and 37.

ihe shaft-'27 '(Fig. 4) operates'the mechanism shown in Figures 13 and '14 for successively removing the completed containers'from the mandrels and depositing them into a'hopper tel-from whichthey are picked up for use.

After the 'electric motors l and 331have'been 5 started, the several containerfabricating mecha- 6.

--by means of a hand'lever 3'! (Figs. "1 and 6) secured to'operating shaft 38 which is operatively :secured irrthe base of franiet. The operating shaft'=38 has secure'd'thereto a clutchyoke fi i nisms of the machine are started "and stopped for causing the internal .clutch member t2 to operatively engage external clutch member 33 to start the container fabricating mechanisms. -When'the machine is'to be'stopped"the lever'tl -is operatedto cause'the clutch yoker39'to d-isengage the internal clutch member 12 TEIOHI the 1' external clutch member 13, thus stopping: the

6 has been omitted for the sake of clarity, any

suitable means may be employed to cause the turret to rotate one-sixth of a revolution and then dwell for a very short interval and then rotate another one-sixth of a revolution. and'uso on as long as the machine is in operation.

1 While one part of the machine is performing an "operation on one container, other parts of the machine are at the same timeperforming other operations on other containers, all of said containers following one another progressively around the machine and are delivered therefrom as complete paper containers as shown in Figures 36 and 3'1.- i

The turret '6 has secured thereto six mandrel assemblies spaced equidistant about the said tur- -ret; drel-40 (Figs. 2; 3, 15 and 16) having a base Each mandrel assembly includes a manshoulder 42, a secondary shoulder 43 and a mandrel block 4|. Each mandrel block 4| is secured to-a vertical surface of the turret 5. The said mand1el block-4| isprovided with three recesses 44, within whichtie pins" 45 are secured. The

-' outer ends Oftiepins 45 support a face plate 49 which-isprovided with a central opening 41 "through which the tubular sleeves of the container'are fed into position on the mandrel 49.

f-Inperforming certain of thefcan'fabricating,

operations it is' necessary to securely hold the tubular assembly to the mandrel;

Pivotally mounted on the upper and lower tie pins 45 of each mandrel assembly are two hold- ;ing brackets, 48 connected together; by tension spring 49 anchored 'to ends of said gbrackets 48.

The opposite ends ofholding brackets 48-are provided with pins 50 on which are rotatably mounted rollers and pivotally mountedclamps '52. The tension springs 49 serve to hold the sleeve clamp 52 open and against holding pins 53 which extend inwardly from the face 1 plates 46.

Positioned around and operatively free of the turret 5 are two clampoperating rings 54, one ring positioned'over and adjacent to the mandrel assemblies and the other positioned under and adiacent to the said mandrel assemblies. The said clamp operating rings 54 are stationary with respect' to the turret and the mandrel assemblies.

In the operation of the turret 5 the rollers 5| ride on the inner surfaces of the clamp operating rings 54 which are provided with raised surfaces55. When the turret 6 is rotated'the rollers 5| at predetermined positions ride up onto the raised surfaces 55 of the clamp operating ring, with the result that the rollers 55 are' moved slightly toward each other causing the sleeve clamps 52 to securely clamp to the mandrel the tubular paper sleeve mounted thereon.

Sleeve feeding mechanism In the'first operation for producing the paper container described, a supply of tubular paper sleeves are placed in a supply hopper 55 (Figs. 7 and 8). The said sleeves l are fed singly and successively into position to be pressed over the mandrel 48 and against the outer edge of the secondary shoulder 43. The shaft 28 has its outer end journaled in bracket 51, and has secured thereto a cam 58; and a bevel gear 59 which 1 "At this stage of production a paper secured to the'end of lever secured to'arm 65' of bracket 51 which is mounted top portion of Jaw meshes with bevel'gear 59 secured to shaft 61 'journaled' in said bracket 51.* The rotation of cm 58 actuates the cam follower 62 'rotatably 53 pivoted on pin 54 on the base frame -5.;' Integral with the hub of lever 83 isa lever 55 provided at its outer end with a pin 61to whichis connected the lower end of link 58; The-upper end of link 68 is pivotally connected by means of pins 69 to the jaw 10 pivoted on pin 1 l'secured'in bracket 51. Thus it will be apparent that the rotation of cam 58 will cause the jaw 10' to pivot upwards at intervals so that 'the 19 will meet the top of fixed jaw 12 which is secured to said pin 1| to form ,a closure'for holding a sleeve in position to be pressed over 'ret 6.1

one of the mandrels 40 on the tur- The next operation tobe performed is to press thesleeve l, which is positioned between 'jaws 19 "and 12,'into position on the mandrel 40; This is accomplished by' the mechanism nowto be. de-

scribed. The bevelgear 59 (Figs. 7 and 8) meshes {with and'drives'bevel .gear'60which is secured to "A cam wheel 13 is secured to and is driven by said shaft 5|." A cam follower 14,'which -is operatively retained within cam race 15 of the cam wheel 13, is rotatably secured to the end of cam follower lever 16; which is'pivoted on pin 11 secured to bracket 51. "A lever 18 is secured to the said pin' 11. The upper end .of said lever 18 is pivctally connected to one endof link 19. The other end of the link 1,9.is'piv0ta1ly connected to the outerend' of thrustrod-EBD which is'slidably' held by hearing 8l'secured to bracket 51. The inner end of the thrust'rod supports a 'thrustj plate 82 which operatesto press the paper sleeve positioned between jaws 19 and 12 into position on the mandrel 49. 'It'will. be obvious that the rotation of cam wheel 13 will actuate the several elements just described to place paper sleeves on the 'm andrels in the sequence described. sleeve is in position on mandrel 40. The turrets5 .is then rotated one-sixth of a revolutiomwith' theresult that themandrel 49 with the sleeve positioned thereon isadvanced to a station to have a bottom disc 2 inserted into the end of the sleeve I. While the'mandrel 40 carrying the sleeve is being advanced, another mandrel is at the same time being advanced into position to receive a paper sleeve thereon; 1

Bottom forming mechanism 5 Referring toFigures 1, 9 and 10, there is'illus trated mechanismffor forming and inserting a bottom disc/2 into the end of the paper sleeve 1 positioned, on mandrel 49;

, In the operation-for providing a bottom for the container, a supply roll of paper is rotatably supported onstandards 9| secured 'to a support block 92, mounted on plate86 secured ,to base 'frame5. ,From. the supply roll 9|] a web 98 of paper'is drawn at predetermined intervals by means not necessary to describe; The web 98 is advanced overroller 93w rotatably 'journaled in bearings 94 secured to bearing plate 95 supported by. plate'86a' From the roller 93 the web passes downward and between a die block 91 and a former ring 98. The die block 91 is secured to the'top plate 86 and braced by angle 99 secured to bearing plate 95.. The formlervring 98 'is also supported by plate, 85. Slidably mounted inthe die" block 9.1;isj a; punching'die I 00 whichSerV S to cut a bottom disc 2 (Figs. 24 and-25)- from the produce an assembly as shown in Figures 34 and 35.

Mechanism for assembling the outer sleeve on the inner sleeve of the container The mechanism which positions the outer sleeve 4 over the inner sleeve I is substantially the same in all respects as the mechanism which positions inner sleevev I on the mandrel 40 in the first operation of the machine. The only differences being a slight difference in the size of parts, made necessary by the differences in the size of the inner and outer sleeves. The mechanism illustrated by Figures 7 and 8 will serve to illustrate the means for assembling the outer sleeve 4 over inner sleeve I at the fourth station of the ma- (shine. The shaft 3I (Fig. 4) operates in the same manner as shaft 28 to Operate mechanism shown in Figures '7 and 8.

After the outer sleeve 4 has been positioned over the inner sleeve I in the fourth operation of the machine, the turret 6 is again rotated onesixth of a revolution to advance the container assembly to the position where the adjacent ends of the outer and inner sleeves I and 4 are crimped tightly over the flange 3 of the bottom closure disc 2. r

Mechanism for performing the final crimping operation ,The' mechanism for performing the final crimping operation acts to crimp the adjacent ends of sleeves I and 4 to the condition illustrated by Figures 36, 37 and 38. This mechanism is substantially the same in all respects as the mechanism illustrated by Figuresll and 12; The only difference being that the crimping tool 35 is thrust further against the end of the container in the final crimpin operation than is done in'the first crimping operation.

After the final crimping operation the turret 6 is again advanced one-sixth of a revolution to therposition'where the completed container is removed from the mandrel 40.

Mechanism for discharging the completed containers from the machine When the completed container positioned on mandrel 40 reaches the sixth station of the machine, opposite the mechanism operated by shaft 29 which is shown in Figures 4, 13 and 14, the container is removed from the mandrel 40. The outer end of shaft 29 is journaled in discharge bracket I30 which is secured to base frame 5. Also secured to shaft 29 is a bevel gear I3I which meshes with bevel gear I32 secured to shaft I33 journaled in said bracket I30. A cam wheel I34, secured to and driven by said shaft I33, is provided with a cam race I35. A cam follower I36 operatively positioned in cam race I35 is rotatably secured to the lower end of lever I31 pivoted on'pin I38 secured in bracket I30. The upper end of lever I31 has a fork member I39 engaging pins I40 on pull hub I4I slidably mounted on fixed shaft I42 which is secured in the upper end of bracket I30. The said pull hub I4I has a downwardly extending bar I43 to which is fastened a suction cup I44. The said suction cup I44 is provided with an air valve the stem I46 of which extends through the bar. I43.- In its normal position the valve is closed so that no air may pass into the cup except through the open mouth I45, but by? outside means, air is admitted through the valve and. into the suction cup I44, even though when the valve stem is pressed 10 the mouth of the suction cup is closed by being pressed against the bottom of a container.

A receiving hopper I41 secured to bracket I30 is provided to receive the containers from the machine. Secured to the upper portion of hopper I41, horizontally opposite the suction cup I44, is a. trip bar I48 for engaging the valve stem I46 when the suction cup has drawn a container from the mandrel and positioned it over the discharge hopper I41. In the operation of this discharging mechanism the rotation of cam wheel I34 actuates lever I31-first to press suction cup I44 against the bottom of the completed container, in the conventional manner, to secure th container to the suction cup. The lever I31 then acts to draw the suction cup and the container to a position over the hopper I31. When this position is reached the valve stemv I46 engages the trip bar I43, causing air to enter the suction cup I44, thus removing the suction which causes the container to adhere to the suctioncup and permitting the container to fall into the discharge hopper I41 where the container is picked up for use;

After the completed container isremoved from the machine, the turret 6 is again advanced onesixth of a revolution to present the mandrel, from which a completed container was removed to position to receive another paper sleeve I to begin another cycle of operations to produce another, container.

Having now described my invention, I claims 1. In a machine for making cylindrical, paper containers of the character described, comprising means for positioning a paper sleeve on the end of a mandrel mounted on a horizontally rotatable turret, apparatus for cutting, forming and inserting a bottom disc into the end of the sleeve, a crimping tool for turning one end of the sleeve inward, means forpositioning a second paper sleeve over the first sleeve on the mandrel, a second crimpingtool for crimping adjacent ends of the sleeves tightly against the bottom disc, and a device for drawing the container from. the

mandrel.

2. In a machine for making double walled, cylindrical, paper co 'tainers; a base frame having a horizontally rotatable turret mounted thereon; six horizontally extending mandrels'secured to andjspaced eq distant about the turret; a device for placing inner wall, paper sleeves singly and successively upon the mandrels, leaving the outwardly extending ends of the sleeves free of the'mandrels; a die for'cutting bottom discs from a web of paper; a former block and a former ring for forming a flange on each bottom disc; means for advancing each formed bottom disc from the former ring and inserting it within the end of the corresponding paper sleeve; a crimping tool for turning the free end of each sleeve'slightly inward; a device'for sliding an outer wall paper sleeve over each inner wall paper sleeve; a crimping tool for crimping the free ends of the inner and outer wall sleeves tightly'over the flange on the bottom disc; and a device for drawing the completed containers singly and successively from the mandrels;

3. In a machine for makin double walled, cylindrical, paper containers; a base frame having a horizontally rotatable turret mounted thereon; six horizontally extending mandrels secured to and spaced equidistant about the tur-. ret; a device for placing inner wall, paper sleeves singly and'successively upon the mandrels, leaving. the outwardly extending ends of the sleeves a rees-c free of themandrels; means for cutting, forming and inserting a bottom into the free end of each paper sleeve; a crimping tool'for turning the free;

drawing the completedcontainers from th mandrels;

4. In a machine for making double walled, cylindrical, paper containers; abase frameha'v ing a horizontally rotatable turret mounted thereon; a; plurality of horizontally extending mandrels secured to-and spaced equidistant about theturret; a device for placing inner wall paper sleeves singly and successively upon the mandrels;

leavin'g the outwardly extending ends of-the sleeves freeof the mandrels; means for cutting,

formiii'gand'in'serting a bottom into thefree end o'feach paper sleeve; a crimping tool for turning-1 the freeend of each sleeveslightl inward; a device' for sliding an outer wall paper sleeve over each inner wall paper sleeve; a crimping tool for crimping the' c'ombined free ends of the inner and outer wall sleevesagainst the bottom disc and-= mechanism for drawing the completed containers" fromthe mandrels.

5' In a machinefor'making double walled cylindrical paper containers; a base frame having a rotatable turret mounted thereon; a plurality of outwardly extending mandrelss'ecured' to and spaced about the turret; a device for placing inner wallpaper Sleeves singly and successively upon the mandrels, leaving" the outwardly 6X tendingends of the'sleeves free of the mandrels; means for cutting; forming and inserting a' bot tom into the free end' of crimping; tool for turning sleeve inwardly; adevice forsliding' an outer wallpaper sleeve over each inner wall. paper sleeve and a crimping tool for crimping. the combined free ends of the inner and outer wall sleeves against the bottom disc.

6, In a machine, for making double walled, cylin'drical paper containersia base framehaving a rotatable turret mounted thereon; a plurality of outwardly extendingv mandrels' secured to" and spaced about the turret; a device for placing inner wall apersleeve's' singly and successively upon' the mandrels, leaving the outwardly ex-' tending ends of the sleeves free from the man-. drels; means for cutting, a bottom into the free end of each paper sleeve; adevice'for sliding an outer wall paper sleeve over eachinner wall paper sleeve; andjacrimping tool? forv crimping-the combined free ends of theinnerandouter wall'sleeves against the bottom disc.

7. Ina machine for making double Walled, cylindrical paper containers; a base frame having a. rotatable'turret mounted thereon; amandrel secured: to the turret; means for positioning an. inner wall paper sleeve upon the mandrel, leaving one end of the sleeve free of the mandrel; a' die for cutting bottom discs-from a web of paper; a former block anda. former ring for making aflange oneach bottom disc; means. for advancing each formed bottom disc from the former ringv and inserting it within-thefree end: of the paper sleeve; a crimpingdevice for turning the free" end of'the sleeve slightly inward; a devicefor sliding an- -outer wall paper sleeveover' the inner wall paper sleeve; a crimping tool for each paper sleeve; a' the free end of each forming; and inserting? crimping the free ends of the inner and outer" wall sleeves tightly over the flange on the bottom disc; and a device for drawing the completed container 7 fromthemandrel.

8. In a machine for making double walled, cylindrical; paper containers; a base frame having a rotatable turret mounted'thereon; a' mandrel secured to the turret; means for positioning: aninner wall paper sleeve upon the mandrel,

leaving one end of the sleeve-free from the mam,

drel; apparatus for cutting, forming and insert-- ing; a bottom disc within the free end of the:

sleeve; a crimping device forturning the free'end ofthesleeve slightlyinward; a device for sliding an outer wall paper sleeve over the inner wall paper sleeve; and a crimping tool for crimping the'f'ree endsof the inner and outer sleeves tightly against thebottom disc. N 9. In a machine for making double walled;

cylindrical, paper containers; a base framejhaving arotatable turret mountedthereon; a mandrel' secured tothe turret; means for positioning an inner'wall paper sleeve upon the mandrel, leaving one end of the sleevefree from the man- 'drel; means for inserting a bottom disc within the free endof tiie'sleeve;' a crimping device for turning the free end of the sleeve slightly inward; a device for placing an. outer wall. paper sleeve over the inner wall paper sleeve; and a crimping tool for crimping the. free ends of the combined inner and outer sleeves tightly against the bot-- to'mvdisc.

10. In a machine for making double walled; cylindrical; paper containers; at base framehaving a rotatable turret mounted; thereon; a mandrel secured'to the turret; means forpo's'iti'oning an inner wall paper sleeve upon the. mandrel leaving one end'of the'sleev'e free-from the mandrel; means for inserting. a bottom disc within the free end ofthe sleeve; a device for positioning an outer wall' paper sleeve over the innerwall paper sleeve; anda crimpin'grtool forcrimping the free ends of the combined inner andjout'er sleeves tightly against the bottom disc.

1 1 Ina machine for making double walled} cylindrical, paper containers; a mandrel for holding the containerelementsin position; while the container fabricating operations are being performed; a. device for positioning an inner wall paper sleeve upon themandrel, leaving: one end of the sleeve. free from the mandrel, means for insertinga bottom element withinthe freeend-of the sleeve; a crimping tool for turning. the free end of the sleeve slightly inward; a. device for positioning an outer wallpaper sleeve over the inner wall paper sleeve; anda crimping tool for crimping: the 'freeendsof the combined inner and outer sleeves tightly against. the bottomelement.

12; In=amachine for. making double walled cylindrical paper containers; a mandrel for holding the container elements ll1 pOSlti0n while the container fabricatin woperations are being. performed; a device for positioning an inner wall paper sleeve-upon the mandrel, leaving one end or thesleeve projecting from the end-of thefmandrel; means for insertinga-bottom element within the projecting endwof thev sleeve; a; sleeve assembling deviceiorpressingian' outer; wall paper sleeve. over the inner wallxpapen sleeve;,,and a crimping to 01 for crimping the proj eating; ends: of: the 1 combined inner and outer sleevestightly against the bottom'elementb V 13. In a machine for making double walled paper containers a mandrel for holding the con slightly inward over tainer elements in position while the container fabricating operations are being performed; means for pressing an inner wall paper sleeve over the end of a mandrel; means for inserting a bottom element within the paper sleeve; a sleeve assembling device for pressing an outer wall paper sleeve over the inner wall paper sleeve; and a crimping tool for crimping one end of the combined inner and outer sleeves tightly against the bottom element.

14. In a machine for making double walled containers; a mandrel for holding the container elements in position while the container fabricating operations are being performed; means for pressing a sleeve, comprising the inner wall of the container, over the end of the mandrel; a former block for inserting a bottom element within the sleeve; a tool for turning one end of the sleeve the bottom element; a sleeve assembling device for pressing an outer wall sleeve over the inner wall sleeve; and a tool for curling one end of the combined inner and outer sleeves tightly against the bottom element.

15. In a machine for making double walled containers; a base frame for supporting the several elements of the machine; a turret rotatably mounted on the base frame; a mandrel secured to the turret for holding the container elements sleeve over the inner wall sleeve;

in position while the container fabricating o era tions are being performed; means for positioning a sleeve which comprises the inner wall of the container over the end of the mandrel; a former block for inserting a bottom element within the sleeve; a tool for turning one end of the sleeve slightly inward over the bottom element; a sleeve assembling device for pressing an outer wall a tool for curling one end of the combined inner and outer sleeves tightly against the bottom element; and a suction cup operating device for drawing the container assembly off the end of the mandrel.

MELVIN H. SIDEBOTHAM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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