US2614515A - Hood forming machine - Google Patents

Description

Oct. 21, 1952 E. M. WHEELER HOOD FORMING MACHINE 3 Sheets-Sheet 1 Filed June 22, 1951 3 m m WW 80 m m M m m E Oct. 21, 1952 3 Sheets-Sheet 2 Filed June 22, 1951 J i w w a, i m -N m aw Wm Oct. 21, E. WHEELER HOOD FORMING MACHINE 3 Sheets-Sheet 3 Filed June 22, 1951 fig. 10.

Shuffle Travel Z H mm Z w 8 m WM 4 WB m Patented Oct. 21, 1952 noon FORMING MACHINE Edward M. Wheeler, New Kensington, Pa., as-

signor to Aluminum ,Company of America, Pittsburgh, Pa., a corporationof Pennsylvania Application June 22, 1951, Serial No. 233,000

from successive portions of the length of metal foil strip that is provided with multi-color printed circular label sections incorporating such indicia as product designation, dairy identification, ornamentation, etc., at regular intervals along its length, and which are to appear on the top panel and, as desired, on the skirt portion of the hoods without excessive offsetting. To obtain this re'- sult, the invention contemplates the provision of a hood forming machine having a novel and simple die controlled shuttle mechanism ,incorporated in the forming die structure and effective subsequent to each feed cycle to shift the foil into registry position with respect to the die just before the blanking operation occurs. The invention further contemplates the incorporation of slack take-up means also controlled by .the die and interrelated with the foil feed mechanism to actuate the latter to remove the slack in the foil web that is created by the registry motion of the shuttle, so that the succeeding feed starts with a taut web and additive errors are thus avoided. It is a still further object of the invention to provide in a hood forming machine that is nominally operative on plain foil to make embossed hoods, die operated registry and slack takeup instrumentalities that are easily incorporated in the machine to enable it to produce the printed hoods or the embossed hoods with equal facility, so that the dairy may make and apply the two types of hoods to different products, as desired. Theinvention further consists in certain novel and advantageous features of construction and arrangement of parts hereinafter set forth and claimed.

Other objects and advantages of the invention, as well as the foregoing, will appear from the following description, appended claims and accompanying drawings illustrating a preferred embodiment of the invention and in which:

Fig. 1 is a side elevation of the hood forming machine adapted for the production of printed foil hoods, the top casing being shown in section; Fig. 2 is a plan view on an enlarged scale partly in elevation and partly in section taken substantially on the line II-II of Fig. 1;

Fig. 3 is a front elevationalview of the feed mechanism;

Fig. 4 isasi de elevation thereof and showing its association with the forming die structure;

'2 Claims. (o1. 113-42) Fig. 5 is a sectional view on an. enlarged scale taken on the lineV-V of Fig. 4; Fig. 6-is a sectional elevational viewon an.

enlarged scale taken'on the line VI-VI and showing the die structure;

Fig. '7 is a view taken on the Fig. 6;

Fig. 8 is a fragmentarysectional plan view of the lower part of-the die structure and showing part of the associated shuttle mechanism. in

section;

Fig. 9 is a fragmentary view on an enlarged scale taken on the line IXIX of Fig. 8 and showing the die structure in partially closed position to shown the action ofthe shuttle, and

Fig. 10 is a plan view of a fragment of the foil strip from which the printed hoods are to be made and illustrating diagrammatically the indexing action on this strip to effect its registry with the die. 1

The machine illustrated in the drawings is a self-contained unit that is adapted to beusedin the-bottling room of a dairy for-making the hoods and delivering them for release onto the tops of filled bottles passing to a sealing head where they are sealed on the bottles in a well known fashion. The invention, however, is not limited to this particular mode of use of the machine.

The general organization of the machine is shown in Fig. 1 and it comprises a foil supply station H] at the rearof the machine, a hood forming station 11,- a feedstation 12 and a scrap rewind station l3. All ofthese elements are supported on the upper portion of a transmission housing [4 which issupported on a table base l5 having adjustable legs l6 by which the machine can be located properly with respect to of Fig. 2

line VII VIIof the path of bottles moving from a filling station to a sealing station. The transmission housing l4 contains the driving mechanism for a main shaft i1 extending across the housing and journalled in bearings carried by the side walls thereof. This shaft carries an eccentric I8 which cooperates with pitman rod H] to vertically reciprocate slide platen 20 mounted in guide ways in a supporting. bracket 2| that is rigidly bolted to the top of the housing M. A continuously driven gear 22 is rotatably supported on shaft l1 and is operable to drive the shaft through a one revolution clutch having acontrol trigger element 23. Continuous rotation is imparted to gear 22 through reduction gearing, as indicated, and an adjustable speed pulley drive including pulleys 24 and 25, the latter being driven by motor-426. The clutch control trigger 23 islmountedon 48 forrota'tion with respect thereto. ing of the one-way clutch 56 is adapted to be oscillated to actuate'the gear 54 and thus intershaft 21 which extends through the front and the rear walls of the housing i4 and is adapted to be tripped by a solenoid 28 that is connected by means of a lever and link connection 29 to shaft 21 and also to be tripped manually by a finger piece 30 on the front end of the shaft 21. parts in housing i 4 thus far named may be of any appropriate known construction.

At the supply station ID, a coil 3| of printed foil is adapted to be supported on an arbor 32. Aluminum foil strip .0035 in thickness or similar impervious foil strip material may-beius'ed. The foil strip from coil 3| is threaded around fixed roller 33 supported on bracketv3'4, passes around a tension roller 35 and extends in substantially a straight line through an elongated guide 36 past the die station II to pull-through feed rolls at the feed station I2. The tension roller 35 is carried on a swinging arm that is normally tensioned to swing'to the right as viewed in'Fig; l'by' means of a spring3'l. A hold-down roller and cooperating wiper'felt, as indicated at 3,8, ar'e' provided at the 'entranceend of the guide 36." The foil is intermittently fed in timed relation to the operation of the die structure. The swinging of the arm and its roller 35 provides a cushioned feed of the strip from the supply coil, the arm and roller swinging forwardly at'each feed stroke and thereafter retracting so as to impart practically constant rotation to the supply coil, even though the feed is intermittent. A spring pressed friction disc bearing on the end of "the foil spool on arbor 32 is adjusted to prevent'overrunning of the spool as is customary.

As isseen more clearly in Figs. 3 and 4, the feed mechanism includes a feed roll 40 which'is keyed to'sha'ft 4| journalled in suitable bearine's n-a supporting bracket: 42 which in turn is securedby'bracket 43 to the front side of the housing l4. Laterally spaced portions of the feed roll "Ml-are knurled, as indicated, to prevent foil slippage 'and the foil is pressed down firmly incontact therewith by a rubber hold-down roll that iscarried by shaft 45 journalled in arm portions '46 of a hold-down weight 4i "that is pivotally connected to a back shaft 48 rigidly supported in upstanding arm portions 49 of the bracket 42. Feed roll shaft 4| is of reduced diameter at one end (Fig. 3) and has mounted thereon a one-way or overrunning clutch 50, the rotor element of which is pinned'to the shaft while the-casing portion thereof is keyed to the bracketagainst rotation'by means of set screw This clutch is o'f'well known construction, and serves'to permit rotation of the feed roll in a counter-clockwise directionbut to prevent its rotation'in the clockwise direction, as viewed in Fig. 4. Thereby, any retrograde movement of the foil once it has been advanced by the feed mechanism is prevented. A spring pressed friction disc 52 slidably keyed on one end of shaft '45 bears'against adjacent arm portion 46 and the drag pressure is adjusted to prevent overrunning of the hold-down roll 44 with respect to the feed roll.

Feed roll is adapted to be driven by means of gear 53-secured to the outer end of shaft 4| which gear meshes with a. drive gear 54 whose hub is secured to the rotor'element 55" of a oneway or overrunning clutch 56, the rotor 55 being journalled on the outer end of the fixed shaft The casmittently' drive feed .roll 40 in the feeddirection The by crank arm 51 having a crank pin 58 that is connected by a connecting rod 59 to crank pin 60 of a crank 6| fixed on a stub shaft 62 that is suitably journalled in the side wall of housing M. The inner end of the shaft 62 carries a sprocket 53 (Fig. 1) that is connected by chain 64 with sprocket 65 secured on main shaft l'l. TimingofLthefeed with respect to the position of eccentric i8 is controlled 'by adjusting the crank 6| on its shaft 62 while the amount of feed imparted at each stroke is adjustable by radially shifting-crank pin 58 with respect to crank arm 51. Crank pin 58 is carried by an adjusting screw fifi'rotatably mounted in the outer bifurcated end of "arm 5! whereby to permit accurate adjustment of the "amount of' feed.

in additionto this principal oscillating drive means for actuating the feed roll, an auxiliary friction drive means is provided which comprises a pair of friction discs 5'! on either side of the drive-gear 54. "Pressure discs til-supported onfitlie hub of ge'arfi54 bear on the outer faces of frictiOndis'c's -BT. These discs at circumferentially spaced'ipoints are connected by cross bolts 69 which carryfcompression springs 18 interposed between the 'face of one of the discs and adjusting nuts 1 I 'on the ends of the bolts. Under the influence of the springs, the plates 68 are urged towardeach other and maintain the friction discs fil infr-ictional driving contact With'gear- 54. *The pressure. plates 68 have arm extensions which at their outer ends pivot'ally carry a thimble l2 havinga .borethro'ugh whichan operatingrod 13 slidablyextends. Thisoperating rod iscarried by the punch holder of the dieset hereinafter to bedescribed so asto partake of the vertical reciprocation thereof. Upon downward:movementLo f the .rod, the rod slides through-the thimble until stop nuts 14 adjustably positioned thereon'engagethetop of the thimble and furtherilmovement'of the rod: effects turning of the pressure plates 68. Thismotion through friction discs BTis imparted to :gear 54 to turn the sameand drive the feed roll in the feed direction. The purpose of this auxiliary feed roll actuation will behereinafter pointed out. Subsequently, during upward travel of operating rod 74, ahead or shoulder on the lower end of the rod comes into engagement with the under side of the thimble to effect turning of theplates 6B in the opposite direction. This motion of the discs is also transmitted to the gear 54, but no movement thereof occurs because the clutch 50 prevents turning of the feed roll 40 in the counter-feed direction and thus through gear 53 the feed gear 54 is held against turning. The tension of springs 10 is adjusted to a point where the frictional driving torque for turning the feed roll is sufficient to feed the foil but insufficient to cause rupture thereof.

The main drive of the feed roll 45 causes a fixed length of foil to be drawn from the supply roll 3|. Subsequent to each feed stroke, the friction drive comes into play to independently actuate the feed roll 40 subsequent to clamping of the strip at the die station I At the die station, there is provided a punch and die structure designed for blanking and forming closure-hoods, which structure is of the character forming the subject matter of United States patent to -R. wM. Wareham, No. 2,251,433 and dated August 5, 1941. The structure comprises, in general, a lower die assembly and an upper reciprocable punch assembly 8| that is secured toa cap plate BZintegral with and proseem j'ectingi i forwardly from th'i'face} of the slide platen 20; "I The die assemb1y- 80 is boltedon the upper side of. housing I4' and'includes a'support drlbas'e plate B3.which carries vertical guide posts of'rods 84 which slide-bl? cooperate with the punchl'assembly BI to maintain it in registration with the die assembly. A die body is secured to'the'base plate'83 and carries a die plate 09 having a rais'edfcentral portion or area .81 of a diame'ter'gr'eater than strip width and formed withT'a, fcentralaperture ,therethrough which forms a' cutting edge surrounding a draw ring 00 which inturnsurroundsjan upstanding die ram'BQ internally of the die body 85. The draw ring is resiliently supported by'spring pressed pests90, one of whichis' shown in Fig; 6. j

v .The fpuncn' assembly 0 I includes hollow punch 9I whichcooperates with the cutting edge of die 86 to blank the foil strip Finterposed therebe tween.-, A clamping plate 92 which also serves as a stripper. surrounds the punch 9I and is movable therewith; but itis also reciprocable with respect tofithe'punch by virtue of the action of pressure springs 93, plate 92 being suspended from a punch hfolder94 by bolts 95, one of which is shown in Fig; ,4;i The punch BI is carried by the punch holder"'94 which is secured to the cap plate 82 andfthese parts contain a reciprocable knockout '96 and within the latter a slidable plunger 91 suspended from a removable plunger holder 98. Heretofore, the plunger 91 constitutes or was providedwith' an embossing die at its lower side, as disclosed in the aforementioned patent, but in the present instance the plunger is to act upon printed foilso a plunger'with a plain bottom face is utilized. iBythe coaction of these punch and die elements; the interposed foil strip F-is blanked and drawn intoa'hood H (Fig. 6) of shallow cuplike format each downward, stroke of the slide 20."The hood remains-in the hole in the strip from which the hood blank was cut so that upon the next' 'feed' step imparted to the foil by the feed roll 40, the hood is carried along and turns downintothe mouth of a chute 99 (Fig. 2) The strip F is normally spaced above the top surface of the dieafdistance less than the depth of the skirt portion of the hood to assure the hoodmovement-tothe'chute. The chute leads downwardly and laterally from the machine to supply I the hoods toa release at its lower end for application to the-tops of passingbo'ttles 'Ashereofore mentioned, the hoods are to-bemade from printed foil strip-which printing is to denote desired labelling and is necessarily requiredto-be in registry or concentric with the top panel of the hoods. At -the time of printing the foil'strip, it is also formed with a pairof transversely aligned arcuate cuts'of small diameter, foreigarnple w s", one of which is shown at I00 in new, defining tab-closed perforations along the marginal portions of the strip at points between adjacent circular label'print sections-indicated diagrammatically by the dotted circles 'IOI-,"broken line I02 indicating the blanking circle at the die. These cuts define tabs I03 which remain connectedwith the foil by neck portions delineated by the ends of the arcuate cuts. The tabs Kare thus easily displaced from the plane of the foil strip to leave perforations I04 therethrough; While full circleperforations-may be provided in the stripat printing and is contemplated; leaving the tabs I03 attached to the strip avoids theproblem of disposal of scrap "punching s and the possibility of their falling into and injuring parts of the printin press and also coming adheredto the'foil and later on accidently contaminatingthe packaged milk products.

Registry mechanism is provided to effect an exact registry of eachimprint IOI with the die subsequent to normal feed of thestrip. This mechanism comprises a shuttle plate I 05 provided with a pair of shuttle pins I06 that are cooperable with the perforations I04. The shuttle'plate is slidably supported on the die plate 86 in flanking relation to the raised central die portion 01, a central aperture I0I of plate I05 encircling the raised die areaB'Iand being'of I slightly larger diameter so as to allow the shuttle to reciprocate in the direction of foil travel. the shuttle plate is also counter-bored on a diameter greater than that of the die plate 06 to re-' ceive the latter and allow shuttle movement. The

upper face of the shuttle plate fore, and aft of the raised die area 01 is co-planar therewith for clamping of the strip thereon by the stripper 92, this co-planar relationship being made preferably by forming a longitudinal strip receiving channel I08 in the top of the shuttle plate. The

underside of stripper 92 is provided with a dependent portion I09 rimming the punch 9 I which rim portion is formed to enter and move down through channel I08 so as to depress and clamp the foil strip against the co-planar surfaces of the, die and the shuttle. The top surface of the shuttle plate in front of aperture I01 and'also the exposed top surface of the die .86 and die body for a width equal to that of channel I08 is downwardly inclined as indicated at IIO (Fig.

7) tofacilitate turning of the formed hoods down into the chute 99. e

The shuttle plate is provided with straight lateral or side portions II2 and the adjacent bush ings on the upstanding posts 84 are cut away to receive these straight portions. Theseportions are drilled through to pr'ovide a longitudinal bore or passageway II3 the lower wall of which is cut away to provide a bottom opening II4 through which an upstanding tongue or central member II5 of an F-shaped bell-crank rocker lever IIB extends upwardly into the bore II3. Two balls I I1 en age the front and rear sides of the member H5 and each ball is held thereagainst by a cone-pointed back-up screw H8 threaded into the side. portion H2 and locked in'adiusted positlon by lock nut I I 9. By adiustin'ent of the screws IIB, lost motion between the rockers H6 and the shuttle plate may be removed without causing binding. K

The rocker levers II6 are pivoted on pins I20 supported in'the die body 85. Each lever has an upstanding arm IZI on its front end, the'upper end of which is adapted to 'be engaged by a pin I22 secured to and projecting laterally from the clamping plate 92. Thereby, during descent of the punch assemblv, the levers IIG are rocked about their pivot pins and. cause forward motion of the shuttle plate. Spring pressed return plungers I23 slidably mounted in the base block 83 engage the underside of the levers H6 and through them yieldingly hold the shuttle and its pins in retracted position with respect to the die. A tail piece I24 of each lever bears against an adiustable stop screw I25 to limit the lever motion in the shuttle return direction. By adustment of the stops I25, the tops of arms 'I2I are disposed in a position such that the stripper contacts them and the strip substantially'simul taneously, whereby the [shuttle is advanced and the strip is depressedfinunison. The forward position of the shuttle is'reached concurrently The under side of 7. with clampingof the foil since the shuttles motion is dependent upon thedownward'niotionpf the stripper into foil clamping position "Theshuttle pins 106, as seen in Figs. '7 "and8, aredocated behind the raised die area 81 and laterally,-match {the transversespacing of the tab closedperforations I04 in the strip. ,They extend up to the iplane of the strip F and are bevelledffrom frdntto rear at their upper ends to provide point contact with the strip. With the shuttle in its forward position, the back-up screws 8 are adjusted to locate thefront face of the'pins:inexact registered relation with respet ittofthe die. In other words, the distance between the front face of the .pins and the center linefof the'di'e is made equal to the distance between thejc'entr line 'of' the imprints WI and the rounded-side of the perforations I04, Itis necessary to have therounded side of the perfoa rations leading with respect to the direction of feed. 7 V I 'The strip feed, by radial adjustment .of crank pin 58, is initially set to normally feed the strip to a, short of registry position by an amountwhich dispfoseslthe rounded side of the perforations in frontof the high side of the shuttle pins. In this position the perforations directly behind the foremost imprint are in forwardly overlapping relation to the shuttle pins.

Thus, as the foil is depressed it is pegged by the pins 105, thepointed ends of the pins pushing out the tabs I03, as shown in Fig. 9. Pockets I21 are provided in the rim portion I09 of the stripper to receive thepins and the up-struck tabs and also to Cooperate with the pins forcleanly punching plain foil whenever such foil is used. The forward motion of the shuttle with thefoil thus pegged ontheshuttle pins will index the foil into registry position, ,the pins freely advancing untilthey contact the front rounded. walls of the perforations, whereupon they positively move the strip, during the remainder of their forward travel. l

, L referably, the pins! 06 have the same diameter as the round front walls of the perforations so as to provide maximum bearing contact between the pins and suchwalls and thereby prevent the possibility of the foil being torn by the pins as they advance the strip foil into registry position. With reference to Fig. 10, broken lines A and (7 indicate the position of the front face of the shuttle pins, indicated by dotted linefcircle, in.retracted and advanced positions, respectively. Broken line B'indicates the position reached by the perforations in the strip at the end of the normal feed. It will be seen' that the shuttle pins have clearance or free travel with respect to'the strip from A to B and a registrycorrectihg travel fromB to C in which'th'ey move the strip. By way of example, the total shuttle travel between A and C may be .093 and the foil feed may be set to give .030" underfeed, whereby the perforations in the strip will forwardly overlap the shuttle pins. Thus, during depression of the foil, the tips of thepin's immediatelypunch up the tabs I03 while moving forwardly to engage with V the rounded front wall of the holes thus exposed in the foil. Thisenga gement comes about as a result of the shuttles forward motion concurrently with the depression ofv the foil. In this way the Dii s take up the. clearance between ,A and? afforded by theunde f fid plus or minus any difference which maybe caused by variation from normal in the .spacingbetween perforations, orpthervvi'se, and then they move the foil into the thimble 72, until the 8 registry with the die for blanking and drawing. Within the total'length of'its strolie,'jth'e shuttle thus compensates for any unavoidable variant imprint spacing throughout the length 'of the strip due to printing tolerance and foil stretch incurred. in the several tension coiling operations to which the strip is subjected after print ing to produce the suitably sized tight coilsforv use in the machine, 'As a result, the imprint on each successive length of foil to be converted intofa hood is quite accurately broughtjintq registra tion despite printing or stretching variations which may be presenting thestrip. U During the blanking and hood forming operation, the slack infthei'length' of scrap or jskele ton strip extendingfromftheidie to thefee'd roll which the shuttlefs forward 5 motion, created 'isremoved by operation'o'f the aforedes'cribedfriction feed operatingdevice b'y depression of 'thi'mble' 12 by the nuts 1.4 on operating rod 73. At the front of the shuttle, a pairrof hold down pins I30 project inwardly and fo'rwardlyf 'from the side walls of the channel I08 and ,thefoil strip passes under them. They serve in'cooperation with .the hold down fingers I29jat theffro'nt end of guide 36 (see Figs. 2 and 6) to hold thefolil declined with respect to its normal straight pass line to an extent that the foil normally presses against thetips of the shuttle pins I06 during feeding, so that it snaps down upon the shuttle pins as soon as the rounded edge of the arcuate cuts H30 defining the perforations I04 therethrough clear the tips of the pins, In addition, the bevelling of the endsof the pins from firont to rear provides flaring edgesfrom the tips to the sidesof thepins which serve in cooperation with the walls of the perforations to shift the foil sidewise, if it is offside, as the foil is.,.depressled onto the pins. This has been found effective to cause sheared strip where the shearing atsonie points is off laterally with, respect to the perforations as much as .020" to be shifted sidewis'e by the pins into alignment with the die without difiiiculty. a

The scrap foil strip leaving the feed rolls is wound into a coil on an arbor l3! that, through a friction coupling I32, is intermittently driven from the main shaft l 1 through suitable sprocket and chain connections indicated at I33, the wind up of the scrap foil'occurring only as the operation of the feed rolls 40-4! permits. l The operation of themachine will be quite apparent from the fore oing description,- At a point indicated. by line X in Fig. 4 in the upstroke ofthe punchwhere the formed hood can be moved without interference with the die, crank 5| begins the normal feed of the strip. The friction on feed gear 54 imposed by the pads ,6! is insufficient to interfere with this normal feed. At this time, in opposition to the clockwise drag of the feed gear on the pressure discs 68, the disc arms are dragged upwardly bythe upward pull of the head 75 of the operating-rod 13 on 7 punch assembly reaches top-most position. Then, during the downstroke of the punch assembly, the arms move down therewith under the continued feed gear drag until normal feed stops at an intermediate point in the descent of the punch. Thereafter, thepunch continues in its down-stroke while the arms remain at rest in, the intermediate posi tion, the operating rod 73 sliding freelythrough thimble 12., .The stripper moving down with thepunch engages the foil and also the shuttle operating levers H6, whereby the foil is pushed During these operations,

- this time also, nut'ldon "engages 'thimble 12 'feed gear 54 through the frictional drive. elements 61iand68 so as per as it depresses the foil down on the shuttle pins I06 and caused to be top of the shuttle'and The Jpunch continues to descend -;to from the registered strip. the stripper of course is stationary with respect to the punch,; the spring and slide bolt mounting of the stripper allowing this relative -motion at this time. At the operating rod 13 rotation of V the blank and draw a hood and .causes.

to turn the feed roll 40 in the feed direction and remove the slack in the skeleton 'web'l'lof foil. that was created by the shuttles forward motion. Overtravel of the discs 68 beyond the point where the slack is removed and the foil web made taut is permitted by slippage at the friction pads, the frictional force of the pads on the drivegear being made very light by adjustment of springs so that this slipping will occur before the strength of the narrowedge portions I remaining-in the V scrap foil is exceeded. Subsequently, during re- :1 traction of the punch assembly to the point where a new cycle of-operation begins, the clutch BO'holds-the feed mechanism against retrograde or counter-feed movement. Thus, each successive feed step is initiated from a previously registered position and this eliminates the possibility of additive errors.

While the presently preferred embodiment of the invention has been described in detail, it will be understood that various changes and modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

What is claimed is:

1. In a hood forming machine, a die set including a die and a reciprocable punch for blanking and drawing hoods from interposed foil strip normally spaced above said die and previously provided with printed labels spaced along its length andbetween them with a tab-closed perforation near each edge of the strip, a pair of strip feed, rolls operable on the strip leaving said die set, oscillatory means connected to one of said feed rolls to actuate the same in timed relation to reciprocations of said punch for feeding the strip past said die set and conveying the finished hoods therefrom, a shuttle plate slidably mountthey engage th I the shuttle plate.

and hold-down pinson the front-end ofsaid ,most label in forwardly overlapped relation to said pins, whereby said pins advance freely until front walls of theperforations and positively move theistripduringi the re- :mainder of their forward travel, to effectregistry betweenthe label and the die set, andfriction drive means interconnected between, said punch and said one feed roll toactu'ate thelatter -subsequent to foil clamping to take ujp the slack f in the foil strip between the die set and thefeed rolls that is created by the forward 1on of 2, A structure'as specifiedinfclaimil, wherein a one-way clutch is connected to one end ofsaid. onefeed roll to hold it a ainst rotation to the counter-feed direction;

3 A structure as specified in claim l;in,.whi:ch the said pins have their upper ends; bevelled downwardly from front to rear in: combination with hold-down fingers behind. sa id "'die z set 1 shuttle plate both overlying'the edges of the strip ed on said die in flanking relation to a raised central area thereof and co-planar with the top of said central area for clamping of the 'foil strip thereon, means for yieldingly holding said shuttle plate in a fixed retracted position on said die, a stripper movable with said punch for advancing the strip to a short of registry position that disposes the perforations of the foreata level below the tips of the bevelled pins'and holding the strip down to bear lightly on the tips of said bevelled pins. 1;

4. In a hood forming machine, a diegset-including a die and a reciprocable punch iQr ;blanking and forming a hood from interposed foil strip normally spaced above said die and,. previouslylabel printed at spaced intervals along its length and formed withtab-closed perforations therebetween near the edges of the-strip, feed means forwardly of the die set toyfeed the strip short of registry of the foremostlabehwith the die setfor subsequent'shuttle feed irrtqregistry position, said feedmeans including a r knurled feed roll and a pivotally supported hold-down roll to grip the strip therebetween, a driving gear connected to drive said feed roll in the feed-direction, a one-way clutch connected to the feed roll to hold it against counter-feed rotation, a second one-way clutch connected to drive said gear, means to reciprocate said punch and to actuate said second clutch in timed relation with respect to each other, a shuttle plate slidably supported on said die and flanking a raised central area of said die and co-planar with the top thereof for depression and clamping of the foil strip thereon, a pair of laterally spaced, vertical pins on said plate extended into contact with said foil strip, bell crank levers connected to opposite sides of said shuttle plate, spring pressed plungers acting on said levers to hold said plate in a fixed retracted position, with respect to which the said short of registry feed locates the perforations of the foremost label in forwardly overlapping relation to said pins, a stripper movable with said punch, means on said stripper for engaging said levers and rocking them to advance said shuttle plate concurrently with depression of the strip into clamped position, whereby said pins push out the tabs and enter the perforations and advance freely in the feed direction until they contact the front walls of said perforations whereupon they positively move the strip into said registry position, friction drive means for said gear, and means movable with said punch and having lost-motion connection with said friction drive means to actuate the same and thereby said feed roll subsequent to said clamping of the strip, to take-upv 5. A structure as specified in claim 4, wherein.

between opposed balls in plate; in combination with ball back -up screws threaded into the shuttle plate and adjustable to take-up lost motion between the levers and the a shuttle plate and to locate said pins in registered-relationwith respect to said die.

- 6. In a-machine-of'the class described, feed rolls arranged to pullfoil-gauge strip through formingdie"mechanism which includes a reciprocable punch and a die abovewhich the strip' is normally sp'aced;a'- stripper movable with the 'punc h" to depressand-clarnp the stripon the die'prelimin'ary to a blanking and" forming operation means for actuating's'aid feed-rolls in tlmed-=re1atibntoreciproeation cream punch, said --strip ha'ving a series of closely spacedcirpillar printed areas along its-length and marginalp'rforations in the waste area's therebev tWeen'said-fieed rolls normally feeding the strip shortqr registry-bi 'the' foremost printed area the strip into registry'of said a eawimthe'die, said shuttle means comprising a reciprocable shuttle carriedby said die; twd vertical pins therebn extended up tothe plane of the'strip and operating levers arranged for actuation by motibn' derived from movement of said stripper only as it depresses; the strip, to move said'shuttle and-its pins from a retracted position to-an advanced position of registered" relation with respect td said die, the upper ends of the pins-being' bevelled from front to rear, means yieldingly holdingsaid shuttle and 'pinsin said retracted position; said normal-strip feed disp'osingthe with'thedie, shuttle means for further-feeding I i 12 i i H perforations directlyto the rear ofirsaid foreiiibst printed area forwardly of: thefmntzside-of; said pins,- whereby the strip is pegged on the;pins during saidstrip depression'a'nd thepins freely-advan'ce until they contact thefront walls; of;.the perforations whe'reu'pon they positivelyymove, the

strip into said registry position andrsupplemem tal friction drive means for said feed. rolls ;arranged for actuation by a motion derived. from movement .of I said punch. subsequent", to--,strip clamping; to remove the slack ;in,,.the length of strip between the die mechanism and the feed rolls-which is created by the registering-feed; of the strip by said shuttle means. V

7. A'structure as specified in claim- 6,, wherein said perforationssand said pins are of roundjorm and have equaldiametersand mutually coactior laterally aligning .the strip WithTIQSDGCt: t0. zthe die. l. 4 a EDWARD: M; REFERENCES CITED,

The following references are of record in the file of this patentz 7 A 7 UNITED STATES PATENTS Number Name W 7 Date 553,604 Wurster Jan. 28,-- 1896 1,626,977 Sibley May, 3, 1927 2,151,028 Hayward Mart'2l, 1939 2,251,433 Warham .4 1 5, 1 41 2,393,683 Hetzelet al can; 29, 946 2,537,540 Messenger Jan. 9, 1951

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