US2334213A - Machine for making container parts - Google Patents

Description

)Nvg 16 A1943. A .L H. MURcH 2,334,213

.l MACHINE FOR MAKING'CONTAIINERPARTS Filed July 26,- 1941 11 sheets-sheet 1 ATTORNEYS Nov .'16, 1943. J. H MuRcH 2,334,213

` n MACHINE FOR MAKING CONTAINER PARTS Filed July 26, 1941 11 Sheets-Sheet 2 ov. 16, 1943. J. H. MuRcH 2,334,213 MACHINE FOR MAKING CON'IAIFH'SR PARTS Filed July 26, 1941 11 Sheets-Sheet 5 Nov. 16, 1943. J. H. MURCH 2,334,213

NACHINEKFON MAKING CONTAINER PARTS Filed July 26, 1941 11 Sheets-Sheet 4 l y INVENTOR 547 54? y ATTORNEYS N0v.'16, 1943. J, H, MURCH 2,334,213

MACHINE FOR MAKING CONTAINER PARTS ATTORNEYS N0v.'16, 1943. J. H. MURCH' 2,334,213

MACHINE FOR MAKING CONTAINER PARTS Filed July 26, 1941 11 Sheets-Sheet 6 -AProreNEYe;

J. H. MURCH MACHINE NOR MAKING CONTAINER PARTS Filed July 2e, 1941 11 Sheets-Sheet '7 ATT'ONEYS Nov. 16, 1943. J, H. MURCH 2,334,213

MACHINE FOR MAKING CONTAINER PARTS Fil'ed July 26, 1941 11 Sheets-Sheet 8 INVENTOR ATTORNEYS Nov. 16, 1943. J, H. MURCH MACHINE FOR MAKING CONTAINER PARTS l1 Sheets-Sheet 9 Filed July 26, 1941 ATTORNEYS Newo 16, 1943. J, H MURCH 2,334,213

MACHIIIE FOR -MAKING CONTAINER PARTS Filed July 2e, 1941 11 sheets-sheet 1o ATTNEYS NGV. 16, 1943a J, H MURCH MACHINE FOR MAKING CONTAINER PARTS Filed July 26, 1941 ll SheetsSheet ll ENTOR WI ZbW/ A T TvO E N EYS BYZM .KNNNN l 'Patented Nov. 16, 1943 UNITEDsTATEs PATeN'r 4orifice MACHINE Foa MAKING coN'rAnma raars John H. March, East Orange, N. J., assignor to` American Can Company', New York, N. Y., a corporation oi' New Jersey application .any ze, 1941, serial No. mais 1o claims. (c1. ca -ae) The. present invention relates to a machine for making nbre container parts and has particular reference to forming and assembling such parts to produce a container end closure unit.

In the manufacture of fibre containers of the character disclosed in United States Patent 2,085,979. issued July 6, 1937, to John M. Hothersail, on Container, the top end member o1 the container is provided with a `closure element which preferably is secured in place with a staple so that the closure element may be opened and closed by bending it adjacent the staple in hinge simultaneously from a web' of fibre material, as-

sembled in proper` position on preformed end members advanced in -a plurality o! lines adjacent the path of .travel of the web, and are secured in place by wire staples to produce complete end closure` units ready for subsequent assembly with containers.

Another object is the provision of such a macine wherein the closure element blank is shaped while being attached to the web and is cut free of the web for a drawing operation that completes the closure element so that it may be assembled with and secured in place on the end member.

Another object is the provision of a machine of this character wherein the severing of the shaped closure element from therw'eb and the drawing operation on the element areperformed substantially simultaneously at the same station of the machine A Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken' in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Referring to the drawings:

Figure 1 is a side elevation of a machine embodying the instant invention, with parts broken back and shown in section;Y

Fig. 2 is a horizontal section taken substantially along the broken line 2--2 in Fig. 1, with parts broken away;

Fig. 3 is a longitudinal section tially along the line l--l in F18. 2;

Fig. 4 is an end elevation oi the machine as viewed along line I-I in Fig. 2;

Fig. 5 is an enlarged sectional detail taken substantially along the line 5-5 in Fig. 2, with parts broken away:

' Figs. 6 and '7 are transverse sectional views taken substantaken substantially along the respective lines` 8-0. 1-1 in Fig. 2, with parts broken away;

Fig. 8 is an enlarged sectional detail taken substantially along the line B--B in Fig. 2, with parts broken away;

Fig. 9 is an enlarged longitudinal section taken substantially along the line 9-9 in Fig. 2, with parts broken away:

Fig. 10 is a transverse section taken substantially along the line Ill-i0 in Fig. 9,'with parts broken away:

Fig. 11 is a sectional detail taken substantially along the line ii-II in Fig. 9, with parts broken away; Y

Figs. 12, 13, 1t are transverse sections taken substantiallyalong the respective lines |2-i2, i3-i3, MitinFig.2; Y

Fig. 15 is an enlarged plan view of a portion Y ofthe machine shown in Fig. 2, with parts shown in a different position;

Fig. 16 is a sectional detail taken substantially along the broken line IB-IB in Fig. 15, with parts broken away;

Fig. 17 is an enlarged view of a portion of a strip ofV material from which closure elements are produced in the machine, the strpshowing the diierent steps in forming the elements;

Fig. 18 is a perspective view of a closure element as produced in the machine;

Fig. 19 is a perspective view `of an end member to be assembled withV the closure element to produce an end closure unit;

Figs. 20V and 21 are perspective views of the assembled end closure unit, Fig. 20 showing the unit prior to being stapled and Fig. 21 showing the same unit after stapling;

Fig. 22 is an enlarged longitudinal section taken substantially alongthe line 22--22 in Fig. 2; and

Fig. 23 is a transverse section taken substantially along the line 23--23 in Fig. 22.

As a preferred embodiment of the instant invention the drawings illustrate a machine in which closure elements A (Fig. 18) having depressed or drawn plug sections B arecut and formed from a web or strip C (Fig. 17) of paper board or other fibrous material which is fed 'through the machine in a step-by-step movement.

The web preferably is suiiiciently wide to cut v'and form two closure elements simultaneously fromthe same web, one each in two rows extend-'- ing longitudinally of the web.

' side of the web. These end members are fed from suitable stacks of such members and each memberjs formed with a dispensing hole or aperture E adapted to receive the plug section of a closure element A.

At the proper time after a pair of closure elements A have been severed from the web and are fully formed, they are swept side-wise or laterally in opposite directions to bring them into position over the top of a pair of end members in the processione of such members moving with the web. While in this position the closure elements are assembled with the end members by being forced down onto the latter, the plug sections B y of the closure elements being pushed into the dispensing openings E of the end members. The

"closure elements are thus held tightly in position f the parts together.

tion, a wire staple F (Fig. 21) is driven through the assembled parts adjacent a tab G on the closure element and this staple permanently secures This completes the assembling operations and the end closure units thus produced are-re-stacked ready for use.

In the machine the advancement of the web C of closure element material and the advancement of the preformed end members D, are carried out along straight line paths of travel and a simple, highly eilicient and high speed construction thus obtains. The web C yis substantially continuous and may be unrolled from a suitable supply roll in any preferred manner.

1 'I'he web C as it enters the machine is received on and is fed along a table 3| (Figs. 1, 2, 3, 10 and 13) secured to a bracket 32 bolted to a frame bed 33. The frame bed is bolted to legs 34 which are supported on a base 35 and these parts constitute the main frame of the machine. Hold-down bars 36 disposed above the table prevent upward displacement of the web. These hold-down bars are secured to transverse tie bars 31 and ahandle 38 bolted to one of these tie bars is provided for removal of the hold-down bars when desired. The two outer hold-down bars also serve as guide rails for maintaining the web in proper position on the table. Y

The web C is fed along the table 3| in a stepby-step or intermittent manner by a pair of feed rollers 4|, 42 (Figs. 2, 3 and 12) which are located adjacent the outer end of the table. Roller 4| is disposed below the web C and is mounted on a shaft 44 carried in bearings 45 in a bracket 48 bolted to the frame bed 33. The roller is periodically rotated by a ratchet Wheel 41- (see also Fig. 1) which is keyed to an outer end of the roller shaft 44. The ratchet wheel is actuated ing 58 in the bracket 46 and in a bearing 59 in the frame bed 33. Adjacent the bearing 59, the shaft 51 carries a cam lever 6| having a Cam roller 62 which operates in a cam groove 63 of a barrel cam 64 mounted on a continuously rotating cam shaft 65.

The cam shaft 65 extends longitudinally of the machine along one side of the frame bed 33 and is journaled in a plurality of spaced bearings 66 formed in a trough-like extension 61 of the frame bed. The cam shaft is rotated by a bevel gear '1| (Fig. 2) which meshes with a bevel gear 12 mounted on the upper end of a vertical shaft13 (Fig. 8) Journaled in bearings 14 formed in a housing 15 bolted to the machine base 35 and formed as a part of the leg section 34.

The vertical shaft 13 is rotated by a helical gear 16 which is keyed thereto and which meshes with a helical driving gear 11 mounted on a main drive shaft 18 (see also Fig. 6) which extends transversely of the machine near the center thereof. 'I'his drive shaft is journaled in bearings 19 in the housing 15 and in a plurality of spaced bearing brackets 8| which are bolted to the machine base 35. The shaft is driven in any suitable manner in time with the other moving parts of the machine.

The feed roller 42 (Figs. l, 2, 3 and 12) is located above the web C and is mounted on a shaft carried. in side arms 86. The arms are mounted on pivot pins 81 carried in lugs 88 formed on the bracket 46. This roller 42 constitutes a pressure roller which presses the web C down tightly against the feed roller 4|. The pressure is exerted by compression springs 9| (Fig. 1) which are seated against the top edge of the side arms 86. The springs are held in place by lock- -nuts 92 threaded on long studs 93 which extend down through the springs and the arms and are secured in the bracket 46.

The pressure roller 42 rotates in unison with the feed roller 4| for advancing the web C into the machine. For this purpose the pressure roller shaft carries a spur gear 95 (Fig. 12) which meshes with a similar gear 96 mounted on the feed roller shaft 44.

As the web C is advanced in its step-by-step movement along the tablel 3|, it enters a cutting and forming mechanism |8| which produces various stages of completion of the closure elements A in different parts of the web. It is at the cut--r ting step that irregular shaped and staggered areas K (Fig. 17) are cut out from the middle of the strip. This forms part of the boundary of four of the closure elements.

At the same operating stroke of the cutting mechanism and in different positions, two slots L are cut in what will be two of the tabs G. Also two substantially triangular areas M are cut away from opposite edges of the web to shape the fronts of two of the closure elements. The cutting raway of the areas K, L and M at each step of cutting removes all waste and shapes blanks N for the closure elements but what will be the individual blanks remain integral with the web until severed at a subsequent station in the machine. Uncut bridge portions O provide the juncture between two adjacent blanks.

In the same mechanism |0| but at a later stroke, the bridge. portion O between blanks N is cut through to sever this closure element blank N from the web. Following this severing operation and as a final step the plug section B is drawn in the blank N and this completes the forming of a closure element A. After the operations have once been startedtwo completed elements A result at each operating stroke of the mechanism |0|.

The cutting and drawing operations incidental *l .to the complete forming ofthe closure elements A, is brought about by cooperating punch die members which preferably are included in the mechanism I0| and between which the web passes. These members include a stationary die block |04 (Figs. 2, 3, 6, 15 and'l) and vertically movable cooperating punches |05'. The dieblock |04 Vis secured to a bolster plate |06 bolted to the frame bed 33.

The top of the die block is flush with the path of travel of the web so that the latter will readily advance across it. A stripper plate |01 is dis` posed above the block to hold the web against upward displacement. The die block is formed with openings |08 which correspond in shape to the areas K, L and M to be cut from the web while the stripper plate, the bolster plate and the frame bed are formed with slightly larger clearance openings |09 of the same general shape.

The punches |05 are disposed above the-web C and cooperate with the die block openings |08 in cutting the areas K, L and M from the web. v

For this purpose the punches are mounted in a punch head H5 (Figs. 1, 3, 6, 7 and 16) 4which is bolted to a vertically movable lcross-head -||5. The cross-head extends transversely of the machine and eachend is secured to the upper shoul-V dered ends of a pair of spaced and parallel vertical actuating rods I|1. The cross-headfis held in place by locknuts H8.

The actuating rods ||1 extend down `through guide bearing brackets I2| which are bolted to the top of the frame bed 33, there being two brackets on each side of the machine as bestl shown in Fig. 2. The guide brackets,l are located in clearance openings |22 in the frame bed and provide long bearings for the rods. The-lower ends of the rods ||1 are shouldered and are se-l cured by nutsy |24 to an actuating member |25. This member holds all four of the actuating i rods |I1.

The actuating member |25 is held in vertical alignment by a pair of spaced and vertical pilot posed between the bearing |33 and a collar |35I on the stem. This provides a iiexible or yieldable connection between the member and thestem.

The lower end of the stem |32 carries a swivel head |4| (see Fig. 3) which is mounted on a pivot pin |42 inthe stem. Opposite sides of the head are pivotally connected to a pair of angularly disposed Veccentric arms |43 which operate on eccentrios |44 mounted on the main drive shaft 18. The eccentrics are arranged to vertically reciprocate the stem |32 while maintaining it in vertical alignment and there-v by prevent any side shifting of the actuating member |25 so that binding on its pilot pins |28 will be eliminated.

Thus'as the main drive shaft 18 rotates, it revolves the eccentrics |44 and hence through the eccentric arm |43, raises and lowers the` actuating member |25. This vertical movement of the actuating membershiftsthe actuating.V

rods ||1 'and thus raises and lowers the cross? head H6 and the punches |05 carried therein. On the downward stroke of the crosshead, the punches cooperate Awith the die block |04 and cut away the scrap portions of the web C to shape the closure element blank N as hereinbefore explained.'

4Severlng of a completely shaped closure element blank N lfrom the web C is effected by a tubular cut-off knife 'l5| (Fig. 16) which is carried in the Ypunch or crosshead `I|6. There' are two of these cut-off knives, one for each y vlongitudinal row of closure element blanks N r the web. Each knife is formed with a cutting or shearing edge' |52 which cooperates with a Vsimilar edge |53 on the die block |04 in cutting across the bridge O (Fig. 1 7) which connects the closure element blank N to the web'.

The severing operation iseffected on the down V stroke of the cross-head H8 and on this same stroke the 'cut-off knife pushes the severed blank N down into place on a draw ring |56 1or the drawing operation. The draw ring is seated in a stepped recess |51 located in the bolster plate |06. Within the ring there is an ejectingvplunger |58.l The plunger is normally held in a position flush with the top'of the draw ring, vby a] compression spring |59 which is housed within the plunger and which exerts its pressure against the frame bed`33.

After moving the sheared oi blank N down onto the draw ring |56, the tubular cut-off knife |5| momentarilyremai'ns stationary at the bottom of 'its stroke to hold the biankwith .a slip grip for and during the. drawing Opera* tion. This drawing operation immediately follows the cutting oif operation and produces the plug section B in the blank.

'I `he drawing of the plug sections B inthe blanks N is brought about by drawing punches |55 (Fig. 16)` which are carried Vin the tubular cut-oil knives |5I. There is one of these'punches for each knife and they extend up through ciear--` ance holes |86 in the punch head H5, and in thev cross head IIB andare secured at their -upper ends in an auxiliary cross head |1| (Fig.

6) The upper ends of the punches are threaded V and are locked in the auxiliary cross head by locknuts |12 which permit of adjusting the punch vertically 'to obtain a desired depth of draw in the blanks N.

The auxiliary cross head |1I is mounted directly above the cross'head H6 and is actuated independently of cross head H6. For this pur- 'pose the ends of the auxiliary c'ross head are .secured to the upper shouldered ends of vertical.

actuating rods |15. There is one of these rods at each end of the auxiliary cross head and they are disposed between and in line with the two actuating` rods I|1 of the-cross head H6 (see Fig. 2).

These rods |15 extend down through guide holes |15 (Fig. 6) in the cross head H6, holes |11 `in the frame bed 33, and holes |18 in the actu-4 ating member |25. Below the actuating member |25 the lower end of each actuating rod |15 terminates in a clevis |8|which carries a pivot pin |82 for a crank arm |83- mounted on a crank |84 formed in the main drive shaft 18. 'There are two of these cranks |84, one for each actuat-I ing rodv |15.

Hence rotation o f the main drive shaft 18 alsol lformed on 4the strokebar.4

.The twosegment vgears |93 areformed on a.

perateskth erankfarmsi-ar mateur through the actuating rods;4 |13, raise and` lower the? auxiliary cross 4-head |1If and its drawing punches |63 lintime with the movement of the'cross head with its end member D.

-Thegend members-Dare. retained in.. stacks in .-a pair ofmagazines 83 (Figa 1, 2,- 3 9-and10) ,whicht are located -f one ,on leach sidelof 'the `ma- :chlne just outside oi' and adiacent.. the path of travel-of the web C. These .magazine'sinclude :vertical .guidebars |81 whichare secured in ffmagazinebasesil. Thebases are secured to runway blocks-.|39 l; r )lted }j;o the frame. bed 33. The guide-xbis Bre arranged v.aroundtmopening ...|30- 4in ern-.lr .rnagazine. base and the' lower part of each stackof end t members extends down into Yits.assiciateti Jperiingand is supported'on'the vrunwiatygfll. A;;. f:he end-.members D are fed from the bottom .of the magazine one. at aftimeby a'short stroke bar l9l (1"i gs .,9V and 10) which extends under the magasine... ,There is onel of .these stroke barefor eachmagazlne |89 and they'are .dis- -posedin gsigie. grooyes |92. (see also Fig. 13)

ment gear |93`which meshes pairof arms |93fbotli'being mounted ,on across .from toename redes. 'rheshaft extends outj side;of ,thfe framebedon. one side and carries a carnl arm |93'.(see also Figs. 2. and" 3) .ha v i`: ng a cam roller |99whichoperates in a cam groove The feed. vnger 202 is located on the stack. The feed nger pushes the end `member intoj'the grip of -a pair cf rotating feed rollers Y' f 203,5 2043- (Figs. 9:'and110`) :Which-.are'lcated 'adja- "cent the inner end of 'each strokebar.

FeedA roller 2113"fis...disposed above lthe-'roller 2'04 and is mounted' one.- short shaft 205 `jour- 'naled'in bearings 286 'formed in "the magazine; base' |83'.

f Y2011; journalfe'd""`in f a bearing jin? lthe runway I 89 Roller -204 is -`mounted 'on a shaft and in a bearing bracket' 238' secured to the .framebed 33. The rollers are rotated ln'unison by'gear's 2 09, Unmounted on the respective'shafts side-'of the' main'frar'ne'and is drivn' by 'an endless chain` 2|8 which operates over aY sprocket .formed in then inways |89.' Each stroke baris ,reciprocated-througha forwarder feeding stroke andthence through a return stroke bya seg- 40 .Zllof-.fabarrel cam 20| m'ounted on 'the c'am` 'i1-shaft., 65... VItis this ,cam shaft thereforqthat .reciprocates the stroke bars |9 associa driving sprocket 2|! on the main driving shaft 13. The feed vrollers 233, 204 on each side of the lmachine feed `the end members D into position in front of advancing fingers 22| of reciprocable feed bar s 222 (Figs. 22 and 23) which are disposed adjacent the stroke bars |9I. These feed bars extend fornearly the full length of the machine alongside of the path of trave1`of the .web C and carry a plurality of the vfeed fingers `2| 2 'which arelocated in'spaoed order along the bars. l'This advances the end members D in a .stepby-step movement in time with the web 'C, and along fthe top of the runways |39.

.hold them"against return with the advancing flnger's' whenV the latter move back on a return stroke of the feed bars.

The feed bars 222 are disposed in slideways 224 (Figs. 22 and 23) formed in the runways |89. AdJacent4 oneend, each bar is formed with arack 223 which extends down through an opening 229 in the runway and which meshes with a segmentv gear 221. The segment gear is formed 'o n anupright ar'm of a bell crank 228 mounted on and keyed to a rocker shaft 229.` There are two of thesebell cranks, one for eachl feed barizzz.

T her'oeker' shaft 229 extends transversely of .the machine and iscarried in a pair of spaced bearings 230 which depend from the bottom of I the frame bed 33.

One of the bell cranks 223 is. connected by'a link 23| to an eccentric 232 (see also Figa-3 and '4) which is mounted on an .eccentric shaft 233 (see also Fig. 1) iournaled in bearings 234 in the leg section 34 of the machine frame. The eccentric shaft is driven by an endless chain 235 which operates over a sprocket 239 on the shaft and over a driving sprocket 231 on the main drive shaft 13.

Hence the rotation of the main drive shaft 19 vlrevolves the eccentric shaft 233 and this through the eccentric 232 rocks the rocker shaft 229. Rocking of this shaft rocks the bell cranks 228.

It is this rocking of the bell cranks that reciprovca'tes the two feed bars 222 through a forward or vfeedinfsftroke to advance the end members D valong thev runways |39l andthence through a return stroke.

Because o f the staggered arrangement of the closure elements A in the web C, an end member -D'advancing'along one runway |99 moves through assembly station 241 (Fig. 2).

one idle 'station before'being introduced into an 0n the opposite side ofthe machine, 'an end member moving along its runway moves through two idle stations before entering the assembly station. These assembly'stations are located adjacent the place where the closure elements A are formed after being severed from the web C.

' Whilef'an end member D is. at this assembly -station 241-a `finished closure element A is swept sidwise from its position on the ejector plunger |58 (Fig. 16) of the draw ring |56 to a position '-directly over the dispensing opening E of the end menber.` 'This shifting of the closure element is effected bya' transfer arm 25| (Figs. 2, 14 and 15) having a curved hook end 252 which is engageable around the drawn plugsection B of aclosure 'Y element. l

There are two of these transfer arms 25|, one for each row of closure elements in the web C and they are arranged as best Vshown in Fig. 15. These s ing 215 for the plunger (Fig. 9).

yasesina' arms are secured tothe upper ends of apair of rocker shafts 254 (Fig. 14) which are carried in bearings255 of the shafts carry meshing segment gears 256 so that the shafts and the arms maybe rocked in unison. i

One of the shafts also carries a segment bevel gear 251 which meshes with a similar gear 258 mounted on a rocker shaft 259 carried inbearings 261 in the frame bed 33. This .rocker shaft extends outside the bed and carries a camlever 262 having a cam roller 263 which operates-'inV a cam groove 254 (see also Fig. 2) of a barrel cam 265 mounted on the cam shaft 65.

Thus as the cam shaft 65 rotates the cam 265, the latter rocks the cam lever 262 and the rocker. shaft 259 and through thegear connection exe in the frame bed 33,.4 Thelower ends the anvils 211 against the resistance of the spring barrels 281, the closure element to withdraw the. anvil to ofthe assembled closure sembled parts may be further advancedalong the runway 189 as a unit.

the closure element A. is

At the assembly station 241, the positioned clo- I sure element A is pushed downonto the end member D by an assembling plunger 211 (Fig. 7).`

There is one of these plungers for each assembly station and they extend up through the cross head 116 and are secured by locknuts 212 in the auxiliary cross head 111. v

Onthe down stroke of the auxiliary cross head the plungers move down against the closure elethe bottom of .the frame bed. -There are two of y character disclosed in bed 33.

After such an assembling operation the closure unit is advanced bythe feed bars 222 through an idle station and thence into a stapling station 311 (Fig. 2) where the staple F; is insertedinto the assembled parts to secure them together. The. staples are formed from strands 312 (Figs. '1,13- v and 4) of wire taken` from a pair of spools 313 located one on each side oneach sideof the machine. These stapling devices States Patent 2,034,408, 'to the sameinventor, on

covers to containers.

' The s tapling devices ets 316 whichare bolted tothe top of the frame The Adevices areoperated by vertical plungers 311 (Fig. 3), thelower ends of which are connected by links 31Std levers 31S mounted on lpivot pins 321 carried-in lugs 322 formed `on these plungersand levers, one set for each sta pling device and each lever is pivotally connected tovan eccentricarm 324 of an eccentric 325. The

two eccentrics are mounted on and are rotated by the eccentric shaft 233.

ment. It is this movement that inserts the plug section B of the closure element into the dispensing opening E of the end member and thusv assembles the parts for further advancement'. On the return up stroke of the plunger the assembled parts are prevented from rising with the plunger, by a stripper plate 214 having a clearanceopen- During this assembling operation ber D is backed-up from below by a movable anvil 211 (Figs. 9 and 1l) which is recessed to clear the plug section Bof the closure'element. The anvil is secured to a slide block 218 which is located in a vertical'slideway 219 in the runway 189. A spring barrel 281 in the slide block exerts its force against the runway and thus presses the block down against a bearing block 282 on a crank 293 of a longitudinal rocker shaft 284 carried in bearings 285 in the frame bed 33.

The rocker shaft 284 on each side of the machine extends beyond the end ofthe machine as best shown in Fig. 9 and carries a segment gear 291 (see also Figs. 2 and 4). The two segment gears mesh with racks 292 formed in a transverse slide bar 293 which slides in 'brackets 294secured to the end of the machine. The slide bar is connected by a link 295 to a cam lever 296 mounted on a pivot stud 291 threaded. into the end of the trough extension 61 of the frame bed 33'.' The lever carries a cam roller cam groove 293 of a face cam 299 mounted on the end of the cam shaft 65.

Hence the rotation of shaft 65, reciprocates the 'the' @am iss Wahine cam slide bar 293 and thus the end mem-v Awhich operates in a ,K

rocks the segment gears291 and their shafts 284 3 in time with the other moving parts of the machine. This rocking movement of the shafts 234 swings the cranks 283 and thus raises and lowers pressure of In the stapling U-shape'to provide the vstaples F. The legs ofva staple thus l formed are driven through the alssembled closure element A and through the end memberD while they are atrthestaplingstation. The ends of the staple'then are bent back on the under side of the member.v It is this sta- 'pling action that secures member together to producethe end closure unit hereinbefore mentioned.

During the insertion of which bends back the ends of the staple as hereinbefore mentioned. The anvil is recessed to clear the plug section B of the closure element and is vertically movable to engage the end member during the insertingoperation and to withdraw from the end member to permit its further advancement.

The anvil 331 is mounted on' a` slide'block 332 which is located in a vertical slideway 333 in the runway 189 and is maintained under spring a springbarrel 334 in the sarneman-l ner as the assembling anvil 211. The anvil and the slide block are raised and loweredv in timewith the other moving parts of thermachine a bearing block 335 mounted on aV crank of the crank shaft 284.

This stapling together of A and an end member D completes the operations on tions for each runway.

to back up the end member D while is being assembled with it and clear the plug section B element so that the as" of the machine. Each y Wire strand-enters a stapling device 314 disposedv t over the path oftravel ofthe 'end members D issued March 1'1, 19,36'.`

Machine for fastening 314 are secured to brackdevices 314 the wire strands 312l arecut into-short lengths-and' are bent into.

the element and the the staple, the end` member -D is supported on an anvil 331 (Fig. 9)

av closure element the end closure units and thereaftery they are readyfor discharge from the machine.

' .=.produce a composite end closure unit.,

.. merely a preferred embodiment @At there-stacking station ai'closureunitis re`- ceived on a lifter pad 34| (Figs. 5 and 9) located under a vertical magazine 342, 'The-pad is disposed within aslideway M3 `formed in the frame bed f33- and in`a magasine base 344 which is secured to the top of the frame bed. The' top of the lifter pad is normally held flush with the runway |89 by a cylinder 345' formed on the rockshaft 2M` and 'aving a normally verticalliiat` cam side 340. e 'n' "i "'--1This cylinder` is `located within a recess. 346- in the pad and'operates against a shoes-341 inthe pada- S1ots348'in the pad adjacent the recess permit the rock shaft to extendthrough the pad. The cylinder retains thelifter pad in a devpre'sseci'iosition iii its recess, under pressure` of a plurality oi compression. springs` l which press upwardlyagainst .the bottom of the pad. These springs are disposed in vertical bores v35| '-forindin a plate 35i-secured to the bottom of the frame bed 33'. v l g Hence wienthe rocker shaftvzu moves through a partial rotation to bring the assembling anvil 211 and the stapling anvil 33 lj into operating position,` it also rotates the cylinder 345 and thus shifts 'its 'natcam side 340irm its normally-vertical position'intoa horizontal position. This shifting of l'the cylinder 'cam permits the springs 34e to lift lthepad 34j andthe closure unit carried thereon. The closure unit Ais thus raised upthrough an entrance-'opening 355- inl the magazine base 3M ax i:i"is`, 'deposited at the bottomA of a stack of such units" retained inthe magazine, The units are These stacks may be removed manually,l from the n magazines as desired. l

It is thought that'the invention and many of its attendant advantages willbeunderstood from theforegoingdescriptionr and it will be `apparent that various changes may be' made in the form,

`construction and arrangement" ofthe parts without departingfromthe spirit4 and 'scope ofthe `inventionor sacrificing all of its material advantages, the@` form hereinbefore described be' thereof.

I claim:

- 51; In` a `machine rer makingt nbrev container parts, `thecombination of meansfor severing a nat -blankfrom astrip of nbre stock, means for drawing the severed blank into a'closure element having a depressed drawn plug section, and de- ,-vi ces for l.assembling and securing the closure ele- `v`:ment with an apertured container end member :1f-by inserting saidl plugsection of the closure element into the aperture of said 'end .member to .l 2. In a. .machine for `making nbre container 4,pttr'tsrtheg combination ofmeans for simultaneously severingia pluralityfof nat blanks from a ered blanks into closure eleiner'itseach'A having a depressed drawn plug sectiomandldevices for assembling and securing the closure elements with apertured container end members byinsert- .ture cfa said lilat end member 13. In a machine for makingnbre container parts. the combination of means for feeding a nat strip of nbre stock along a predetermined path of travel, mechanism adjacent said path of travel for simultaneously forming and drawing a plurality of closure elements from said strip, each of said closure elements having a depressed 'drawn plug section, devices for shifting the newly formed closure elements into assembled position with cooperating fiat end members each having an aperture therein, and instrumentalities for securing the assembled parts together by inserting said plug section oi a closure element into-the aperto produce com posite end closure units.

4. In. a machine for making nbre container parts, the combinationlof means for feeding a strip of nbre. stock along a predetermined path of travel, mechanism adjacent said path of travel forforming and drawing from said strip a double row of closure elements each including ardepressed drawn plug section, and devices for shiftingthe closure elements soformed in opposite di- .rections'into respective registry with a plurality tions of said closure elements into the registered and aligned apertures of said container end members to -produce composite end closure units. l 5. In a machine for making nbre container parts, the combination of means for feeding a strip of nbre stock along a predetermined path of travel, mechanism adjacent said path of travel for forming and drawing a double row of closure elements fr om said strip, each of said closure ele- .-ments including a depressed drawn plug section auxiliary feeding vmeans for advancing container end members along a predetermined path parallel with the strip and closely adjacent its outer edges, each of said end members having an aperturel therein, devices for shifting the newly formed closure elements outwardly across the outer edges of the strip and into registering position above the advancing end members, means for pushing the positioned closure elements down on and into the apertures of the respective registered end members, and instrumentalities for securing the parts thus assembled together to produce composite end closure units.

8. In a machine for making nbre container parts, the combination of a die mechanism for forming a double longitudinal row of closure elements from a strip ofnbre stock, a pair of magazinesvgiocated one on each side of the strip of stockA for retaining a supply of container end members, feeding devices adjacent said magazines for feeding' the end members therefrom individually and in time with the forming of said closure elements and along paths of travel adjacent the strip, a pair of pivotally mounted trans- 'fer arms for engaging behind a pair'of newly formed closure elements and for transferring them into positions onto a pair of the advancing andl instrumentalities for securing the assembled parts together to produce end closure units.

7, In a machine for making nbre container 'j parts. vthe combination of means for intermittently feeding a strip of nbre stock along a n straight line path of travel, auxiliary means for feedingvv two lines `oi' end members having dispensing openings therein, along straight line paths of travel in time with said strip, one line being on each side of and closely adjacent said strip, die mechanism adjacent the path oi' travel of the strip for forming pairs of closure elements from two longitudinal rows in the strip, each closure element having a drawn plug section,.de vices adjacent said die mechanism for sweeping the individual closure elements of each pair in opposite directions and into position adjacent said end members, vertically movable'plungers located above the path of travel of the end members for assembling the closure elements with the end members by inserting the drawn plug sections of the elements into the dispensing openings of the end members, and instrumentalities duce end closure units.

8. In a machine for making fibre containerv parts, the combination of means for intermittently feeding a strip of nbre stock along a straight line path of travel. auxiliary means for feeding two lines of end members having dispensing openings therein along straight line paths of travel in time with said strip and one line on each side of and closelyV adjacent said strip, die mechanism adjacent the path of travel of the strip for forming pairs of closure elements from two longitudinal rows in the strip, each closure element having a drawnplug section, devices adjacent said die mechanism for sweeping the individual closure elements of each pair in opposite directions and into position adjacent said end members, vertically movable plungers positioned above the pth of travel of the end members for assembling the closure elements with the end members by inserting theA drawn plug sections of the elements into the dispensing openings of the end members, instrumentalities for stapling the assembled parts togetherl to produce end closure units, an anvil for each of said plungers and for each of said stapling instrumentalities for supporting the end members during the assembling and the securing ofthe parts, and means for simultaneously shifting said anvils into and out oi' operative position in time with the travel of said strip.

9. Ina machine for making fibre container ing the end members therefrom individually and in time with the forming of said closure elements and along paths of travel adjacent the strip, a pair of pivotally mounted transfer arms for engaging behind a pair of newly formed closure elements and for transferring them into positions onto a pair of the advancing end members, means for assembling the `positioned closure elements with the end members, instrumentalities for securing the assembled parts together to produce end closure units, and a discharge magazine at the end of each of the paths of travel of the end members for receiving completed end closure units and for retaining them in stacks.

10. In a-machine for making fibre container parts, the combination of a die mechanism for forming double longitudinal rows of closure elements from a strip of ilbre stock, a pair of magazines located one on each side of said strip for retaining a supply of container end members, feeding devices adjacent said magazines for feeding the end members therefrom individually and in time with the forming of said closure elements and along paths of travel adjacent the strip, a pair of pivotally mounted transfer arms for engaging behind a pair of newly formed closure elements and for transferring them into positions onto a pair Vof Vthe advancing end members, means for assembling the positioned closure elements with the end members, instrumentalities for securing the assembled parts to gether toproduce end closure units, a discharge magazine at the end of each of the paths of travel of the end members for receiving completed end closure units and for retaining them in stacks,

a magazine for receiving the said closure units,

and stacking devices for inserting individual units into said magazine at the bottom of the stack within the magazine.

JOI-IN H. MURCH.

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