Патент USA US2406784код для вставки
Sept. 3, 1946. A. E. ALMGREN 2,406,784 ì OVERCAPl APPLYING- MACHINE ‘ Filed March 19, 1942 »MH 1o ' sheets-sheet 41 INVENTOR _ BY ¿t ß . ATTORNEYS Sept. 3, 1946. „ A. E. ALMGRx-:N‘ ~ 2,406,734 ovERcAP APPLYING‘ MACHINE ` rfi Filed March 19, 1942-' 4_T` /7/ l ' 1o sheets-sheet 2 9 204.] INVENTOR ATTORNEYS ' > 3, ~1945- l A. E. ALMGRENY 2,406,784 OVERCAP APPLYING MACHINE ATTORNEYS ASept° 3, 1946. n A. E. ALMGREN . 2,406,784 OVERCAP APPLYING MACHÍINE _ Filed March 19, 1942 l0 Shelets-S‘heet l5 Sept. 3,1946. A. E. _»ALMGRE'N 2,406,784 OVERCAP APPLYING MACHINE .` Filed March 19, 1942 10 Sheets-Sheet 6 Sept. 3, 1946.` - A. E. ALMGREN 2,406,784 OVERGAP APPLYING MACHINE Filed March 19, 1942 1o sheets-sheet 7 Sept. 3, 1946. A. E. ALMGREN 2,406,784 OVERGAP APPLYING MACHINE Filed March 19, 1942 10 'Sheets-Sheet 8 Sept. 3, 1946.v y A. E. ALMGREN 2,406,784, OVERCAP APPLYING MACHINE ` Filedl March 19, 1942 ¿i 266 Zai Zäfi ff? 'Zail -1o sheets-sheet' e Patented Sept. 3, 1946 2,406,784 lUNITED .STATES ¿PATENT OFFICE l n «2,406,784 " ' Y, August oviinonr E. Mmmm-Hillside, APPLYING N. ` Yassignml- to AmericaiLCanQOmpany, `New York, N. Y., a corporation of> New lJersey Application March 19, 1942, seriaìfNo. ¿433,394 s claims. (ci. 164-48?) - 1 . The 'present yinve‘nïticïin relates to a »machine `v"for applying over-caps to containers and the like «and has particular reference to 'cúttingo?f a pòrtiö? 2 tially` along the line 5?-6 in 3, with parts broken away; Figs. '7' and 8 are enlarged detail views `of a of a web of overca-'p material to produce an over portion .of the machine shown in Fig. 6, the views showing ïtla‘è movable parts and 'a container Iin Icanto placing the, severed overcap in position on a container, and to securing the -o'vercap in place while 'the containers are movi-ng through different positions, with parts broken away; Fig. «9 -is la View similar to Fig. 6 and showing the machine in a continuous procession.v character nshown in United States Patent 2,085, the .movable parts in a `different position; Fig. 10 is aver-tical vsection taken substantial ly along the line IBI-’|10 'in Fig. l5, with parts 979, issued Jîuly 6,' 1937, ïto lJohn yM». -HothersalL broken away; In the ~manu-facture of fibre containers of the and -1i>articu’larly »used for milk, the container after being rfilled and sealed is protected prefèr~ y Í Fig.. 111 is a 'horizontal >section 'taken substan tially along the lline vrI I+II in Fig. 3.; Fig. >12 is a vertical section taken substantially “Cellophane” 0r the like which ¿is crimped >i-'n 15 along Athe line rie-:l2 lin Fig. 11, with parts broken `place over the top end yof the container. The instant invention Aconteinpla'tes an fim Fig. 13 iis an :enlargedisection of the upper por tion- of the «machine and taken substantially proved machine which cuts 'the material for 'such an o'vercap from 'a substantially continuous *strip along ‘the v'broken :line |3-I3 in Fig. 1, with parts and secures `the overc'ap in place on the contain -20 broken away; i ` ably ‘by an oveifc'aïp >'of -cellulo's'ic material such as er by crimping it tightly 'over the edges -of lthe » Figs. ylll 'and 15 -are fragmentary elevational container while applying heat to the crimped views of transfer fingers in the machine, 'as edges of the overcap. viewed "from ‘a .plane indicated 'by the line I 4-I4 An object therefore of the invention is the »pro in ».Fig. 1-3», with parts broken 'away and parts vision of an improved overcapping machine 25 shown in section; ' wherein the material for the overcap is severed Figs. 16 fand 1’7 `are sectional details taken sub stantially V'along »the respective lines `Iii-"-Iâ and from a substantially Vcontinuous trip of material, tl‘i‘e cut-'off overcap is transferred to a position I'I-l‘l] in Fig'. '14; on top 'of 4a'cont'ain'er >to be protected, 'and then is Fig. 18 'is an enlarged .perspective View of a sealed permanently in "place ai‘o'und its edges by 30 cutting element used ~in the machine; _ applying heat and pressure thereto thus protect Vli’i'g. 19 is an enlarged View of a' clinching head in'g the surface it covers against contamination. used in the machine, with parts broken away and Numerous other objects and advantages -of the shown in section; invention will be apparent as it is better under Fig. 20 .is a <'sectional view taken substantially stood from the following description, which, 35 along the line 20-20 in Fig. 19; taken in 'connection with the accompanying drawings, discloses a preferred embodiment thereof. ‘ n ` pad device used in the niachine with .a container in place, with parts Tof the device being broken ' Referring to the drawings: Figure 1 is a top plan Vviewrof a -machine em > Fig. ’21 is .-an enlarged detail View of a `lifter back `and Áshown in section, with a portion 'of the 40 container bi‘öken away; y Fig. 22 is 'an enlarged, exploded perspective away; View showing `the transfer Enger parts illustrat Fig. 2 is a perspective View ef the upper por' ed in Figs. 14 and 15; Fig. 23 is ‘an enlarged top plan view of a cutting tion of a container and anv overcap :to be applied thereto in the machine shown in Fig. 1; 45 device' lused in the machine; and Fig. 3 is a longitudinal section taken substan Figs. 24 »and‘25 are Vertical sections taken Ysub tially along the line 3_3 in Fig. `1, with parts stantially along the lines 2li-“24 and 25e-25 in bodying 'the instant invention, with parts broken broken away; Fig. 4 Vis a transverse section taken rsubstan Fig. v2'3. ` a preferred embodiment of the instant in tially along the broken line ¿#4 in Fig. 3, with 50 vention the drawings illustrate a machine for parts broken away; Fig, 5 is a fragmentary longitudinal section taken substantially along the broken line 5-5 in appl-ying a Cellópl'ialn‘ë brother suitable material overcap A (Fig. 2) "to «a square ñbre milk con Fig. 4; Fig. >6 is a 'horizontal section ’taken substan 55 tainei‘ B .of the character disclosed in the above m'e'ntioned -H'o'thersa'll patent. The top of such' a container is secured .in place by a suitable end 2,406,784 3 be understood further that the entire container is provided with a coating of wax or paraffin and this coating when partially melted serves as a in the machine frame 25. The drive shaft may . be rotated in any suitable manner. bonding agent for holding the overcap'in place on the container. ' ' The containers B are advanced-through the machine in an upright position in a continuous procession in which the individual containers are stopped momentarily at a sealing station where the overcaps are applied. The overcaps are cut from a continuous web or strip D (Fig. 4) of overcap stock preferably fed from a supply roll E. A cut-off overcap is moved into position over the top of a container to be sealed and ís held there stationary while the container moves up to meet the overcap. On the upward travel of the container it picks up- the overcap and carries 20 it up into a closing head F (Fig. 4) which secures the overcap i-n place. The positioned overcap is of suñicient area to extend beyond the ledges C of the container and these overhanging portions are folded down and inwardly around and against the bottom of the ledges by the closing head F. The closing head also presses the edges of the overcap tightly in place while heating them to produce a perma 4 formed on the main frame 25. The bevel gear 45 meshes with and is driven by a bevel gear 49 mounted on a continuously rotating main drive shaft 5i) which is journaled in bearings 5l formed seam which forms an overhanging ledge C which surrounds the container and it is to this ledge that the overcap is secured in place. It should Hence rotation of the drive shaft 55 rocks the cam arm 39 wand this, through the vertical shaft 31, rocks'the transfer arm 35 at the proper time 'to shift the container B. The transfer arm Ypushes the container into engagement with an offset guide rail 52 (Fig. 6) and since the con tainer is still partially on the conveyor 2l, the arm temporarily holds it in this shifted position under slight pressure to prevent premature longi tudinal movement of the container. The guide rail 52 is formed as a part of the guide rail 21. Provision is maden for stopping the feeding of containers through the machine when there are insufficient containers entering by way of the entrance belt 2l. This is brought about by a hook latch 53 (Figs. 6, 'l and 8) which is mounted on a pivot stud 54 secured in the main frame 25. The latch is backed up by a spring 55 located in a boss 55 formed on the main frame. The in ner end of the latch extends into the path of travel of the containers as they approach th'e stop lug 3i. The latch spring 55 presses the hook latch 53 nent seal between the overoap and the wax on 30 against the adjacent edge of the container push the container which binds the overcap to the container and thus encloses the top end thereof. The containersI B to be capped are introduced into the machine by way of a continuously mov ing endless beit entrance conveyor 2l (Figs. 1 and 3). The conveyor extends outside the ma. chine and is driven in any suitable manner. In the machine the conveyor takes over an idler plate 35 and the hook portion of the latch thus normally holds the plate from movement against the incoming containers as shown in Fig. 8. It is this holding action that prevents feeding of the containers through the machine. When the line of incoming containers is suiiî cient, such as shown in Fig. 6, there is enough pressure on the innermost container in the line to form the latch 53 back as far as the stop lug pulley 22 (see also Fig. 4) which is mounted on a short shaft 23 carried in a bearing bracket 40 3l and this releases the hook portion of the latch from the push plate and thus permits the plate 24 formed as a part of a frame 25 which con to function. Normally there are sufficient con stitutes the main frame of the machine. tainers passing into the machine to keep the push The conveyor 2l carries the entering contain plate in a released condition so that there will ers along a straight line path of travel between be no interruption in the operation of the ma a pair of guide rails 25, 21 which are disposed chine. one on each side of the conveyor. These guide Just as the transfer arm 35 begins to move rails are bolted to the machine frame 25. Ad back through a return stroke to release a con jacent the inner end of the conveyor the inner tainer shifted into position against the guide rail most container in the entering line is stopped temporarily against further forward travel by a 50 52; the container is engaged by a timing finger 51 (Figs. 3 and 6') and is advanced one step stop block 3l (Fig. 6) which is bolted to the main longitudinally of the machine. The timing finger frame 25. This temporary pause in the advance ment of the container is effected so that it can be brought into time with the other moving parts of the machine. 51 is formed on a stroke bar 53 which is disposed adjacent the path of travel of the containers. One end of the stroke bar is pivoted on a rocker While the innermost container is in this ar arm 59 mounted on a pivot pin Si) secured in a and 9) which engages against a side of the con- ` upper end of the vertical drive or crank shaft 41 (see Fig. 4). By reason of this connection with bracket 5| (see also Figs. 5 and 10) fastened to rested position it is shifted sidewise from the a gear housing 32 bolted to the machine frame position shown in Fig. 6 to that shown in dotted 25. lines in Fig. 9. This shifting of the container The opposite end of the stroke bar 58 is con is performed by a transfer arm 35 (Figs. 1, 4 and 60 nected pivotally to a crank 63 mounted on the 6) formed with a push plate 35 (see also Figs. 5 tainer. The transfer arm is mounted on a verti cal rock shaft 31 carried in a bearing 38 (see also the drive shaft (i1, the stroke bar 58 is reciprocated Fig. 4) formed in the main frame 25. The lower 65 through a forward or feeding stroke, as shown in Fig. 9, and thence through a return stroke, end of the shaft carries a bell crank 39 having on one leg a cam roller 4I (see also Fig. 11) which as shown in Fig. 6. . Gn the feeding stroke of the stroke bar 58, the operates against an edge cam 42. A spring 44 timing finger 51 pushes the shifted container holds the roller against the cam. One end of the spring is connected to the second leg of the 70 B longitudinally of the machine one step in time with the other moving parts of the machine and bell crank 39 while the opposite end of the spring places it in position on a lifter pad 65 (Figs. is secured to the machine frame 25. 3, 6 and 2l). Guide rails 65 formed on the pad The cam 42 is formed integrally with a bevel hold the container against displacementgear 46 (Figs. 3, 4 and 12) mounted on a verti-A During this placing of the container B on the cal crank shaft 41 carried in a long bearing 48 2,406,784 5 6 lifter pad £5, a stop >or gauge iñnger 11| (Figs. 6 and 10) ¿is interposed temporarily in the ïpath of travel ofthe Icontainer to bring the latter 'to formed 4in ¿the out .off bracket §99.. Theiinner endsoftthe arms Ilditerminate adja rest in a predeterminedglocation on the `ipad. The cent'the innervends o'f the .anvil IIII vand the .pres stop .iinger v1I is mounted on .a ¿short :shaft 'I2 which is carried in bearing brackets 13 >on vthe sure plate 132., :and .carry ya serrated out off knife III8 '(-see `also Fig. 18) which functions in severing main frame .25. The .shaft also .carries a cam lever 'I4 (Fig. V1(3) .having a cam roller 15 which operates against .an edge cam lIìmountedonfthe main drive shaft 5i) (Fig. 3). .It is this cam 'that 10 an -overcap A from the stripD. The opposite ends of the arms are 'tied together by a bridge ||9 shiftsithe stopñnger 'II .ìnt'oand 'out of container gauging position intime with the movement 'of bya link v|22 (Figs. "4,6, 1'1 and 12) ïto a camarm frame 25. the cam by a tension spring '|25 (Fig. 12) which is connected ‘between the cam arm and fa .bracket and one of the arms is lformed with a .lever ex tension |2I. vThe lever extension Sis connected |23 mounted on'a pivot shaft ‘I 24 carried in bear the -‘containers through :the machine. The A@roller ing brackets |25 .formed lin 'the machine frame is >maintained >.in engagement with the cam .by a 25. The inner end Aof the cam arm |23 carries spring vbarrel 'I1 (Figs. »10 and .1:1) which'presses 15 a cam .roller |26 (Figs-3 and 1.1) which oper ates against an .edge cam |21 mounted on "the against the :ca-rn leverv 1i. The spring 4barrel 'is main drive shaft 55. The roller is held against located ina .lug >’I8 sfo'rmedzon the machine lmain , After ‘a ycontainer :is .located properly fon Vthe lifter pad 65 and While the ¿timing îñnger 51 is 20 Y|25 which extends Yinwardly from the machine frame 25. . moving Vloack through 'a ?return stroke, the Icon Adjacent .the cut-oli knife 'I 'i8 and spaced îin tainer is lifted lto .an elevated position >to receive wardly thereof is `a cooperating auxiliary fout-ofi’ its‘overcap. A. lFor this purpose the lifter pad knife |31 which is merely a support edge 4for the is .formed »on a long depending .sleeve 19 (Figs. 3 ,and .21) which contains a compression spring 25 web being cut. The auxiliary cut-oit knife is disposed .below they path of travel ofthe web D SQ and which yextends -down `into .a long stem `8`|. and kis secured to the inner end of an auxiliary The spring provides .a cushion .for ‘the rcontainer out-off lever |32. This lever is `mounted on ‘the to prevent its being crushed when "it Íis lifted Vup pivot shaft II5 and is connected by a 'link |33 to into a clinching head, I‘as will be hereinafter ex plained. .The stein extendsdown through a slide 30 a cam lever |34. The cam lever is mounted 'on the pivot shaft v52e. The Iinner end of the cam bearing 82 :in thelmachinemainframe 25. ' lever |34 carries a fcarn roller 438 (Fig. 3) which ‘Thellowerßend of the ïlifter stem 8| -is connected operates in 1a ‘cani groove |35 of 'a -face cam 'MI pivotally lto a horizontal cam lever 83, Figs. mounted on `the main »drive shaft 5B. 4 and 10, mounted on .a pivot shaft 814 carried Thus as the 'main drive shaft '55 rotates, the in a bearing block 85 secured'to the main frame 35 the cams |21, MI »sli-ift the'links 422, "|33 and 25. The cam lever 83 extends adjacent the edge cam 116 and carries a cam -roller 8'6 which oper ates in a cam groove 81 'formed in a `face of the edge cam. It ís this cam :groove »that raises and lowers the -lifter pad .65 and a container B lo 40 cated 'thereongîin .time with the other moving parts of the machine. ‘ ~ While a container B is being raised into a posi thus operate the out-off levers IIA, |32 in scissor fashion in time with the yother moving parts of the machine. This -cuts oit an overcap from the web E. 'When 4the cut-off levers ‘are in anopen position, as shown 'in »Fig.4, the spring barrels I I I in the levers IM relieve pressure on‘the pressure plate "to2 v’and thus Vpermit the spring V|26 to raise the plate o'ff the web D. While the vpressure thus tion to receive an voveroap A, the `ove'rcap is severed from the .supply roll E and shifted into 45 is relieved from the web, the latter -is 'drawn for ward a distance sufli'cient to Ameasure. and expose vertical alignment with .the rising lcontainer, as enough material to produce an 'overcap A. hereinbefore mentioned. VThe supply roll E of After this predetermined quantity ofthe Web D overcap stock is retained on a reel (9| (Fig. 4) has been measured off, the A‘cut-oh levers begin supported `Ona shaft '.92 (seealso Fig. 1) carried infbearing vbrackets .S3 formed 'on a super-struc 50 to-close >or >come ’together lfor the severing opera tion. lDuring this movement of ‘the cut-off levers ture or upper frame e4 of the main frame 25. the spring barrels IÍII 'move ldow-n against the The 'web D of Y‘ove'rcap material `as it comes pressure plate vIll-2 and thus Aforce the latter Adown from the supplyl’roll E., kpasses-over an idler pulley against the vv'ebïD. This clamps ‘thelatt'er against $35 which is mounted 'on .arms 1Si! carried on the roll shaft 32. From the idler roller 95, fthe web 55 the anvil lol and hence holds 'the web from move ment. As Athe cuit-ofi” 'levers `continue tool‘ose, the passes under a .fianged guide roller 96 (Figs. auxiliary knife ‘|31 »comes 'up 'against thefbottom 4, 23 and 25) mounted 'on a shaft 91 carried of îthe 'web îto support it ywhile the serrated knife in bearings 98 in a 'cut-off Vbracket 99 secured to |'I8 comes down against the top of the web 'first the machine frame ¿25. The leading end of vthe web D is .held tightly between a 'stationary anvil 60 to :pierce :and 'then ’to Ysever the >.o'vercap from the web. pad I!!! and a superimposed pressure plate IIO`2. In order to prevent the roll »of overcap material The pressure plate m2 isloosely suspended from :rotating just after a length o'f the web AD ‘is from »a stud A|03 (see Fig. 24) which extends up measured off, an automatic brake device is pro through a bore IM in a boss |05 on the cut-off 65 videdon the reel '9 I. This-device includes a brake bracket 99. The head of the stud rests Aupon a drum |212 (Figs. 1 and?i) which is mounted on the compression spring I 06 'which surrounds the stud reel shaft ’92 adjacent the reel. This-drum ‘car and which is located in an enlarged shouldered ries-a'rilobon brake 'band V|43 which operates over borre |91 in the vboss |115. K a pin IM carried in a boss |45 secured ‘to a cover The pressure plate |02 also is maintained under 70 |45 for the reel 9i. This -end of ‘the band is pressure of a pair of vertical spring barrels III secured to a long adjustable stud I 41 which is which bear down on top of the plate. The spring carried loosely in 'the'bo'ss |45. A nut |49 on vthe barrels are located in sockets I I2 Yformed in a outerend of the stud is provided for adjusting the yoke IIS which connects a pair of arms H4. These arms IM vare mounted .on a >.pivot shaft 75 ` 'Theïopposite :end of the brakeband |548 .is se brake band. ' » _ ' v 2,406,784 7 are carried on a swing arm |61 (see also Figs. cured in a swing lever |50 mounted on a pivot pin |51 carried in a boss formed on the reel arm - 3 and 4). ' The two arms are mounted on a 93. The lever is maintained under action of a tension spring |52 which is stretched between pivot sleeve, |68 (see Fig. 13) carried in bear ings |89 in the upper frame 94. the outer end of the lever and the reel cover |45. At the ltop, the' swing arms are tied together This keeps the brake band taut around the brake drum |42. The outer end of the lever also is by a tie member |1| so that they operate in uni son. At the bottom, the lower end of each swing arm |51 is bifurcated and is formed with inward ly extending ears |15. (see Figs. 13, 16 and 22). formed with a button |53 which is located close but in spaced relation to one of the reel arms 90. Hence when the web D of overcap material is pulled to measure 01T a length for an overcap. 10 These ears on each> side form a support for a pivot pin |151»` (see also Figs. 17 and 22) of the associated lower gripper finger |66. the web draws the reel levers 9|! downwardly and Each lower gripper finger |66 is formed as an this brings Ithe lever on one side into engagement integral part on the inner ends of spaced and with the button |53 on the adjacent brake lever |58, This moves the brake lever inwardly. This 15 parallel lever arms |11. In the assembled posi tion these two arms |11 are disposed inside of the movement of the brake lever releases the pressure ears |15. The ears form a mounting for the pivot on the brake band and thus frees the brake drum pin |15. to permit the reel 9| to rotate. Each upper gripper finger |65 is formed as an When the pull on the web D ceases, the reel integral part of a single lever arm |8 I. This arm levers 98 shift back into original position under ts between the spaced arms |11 of the lower the action of a pair of springs |54 which are ñngers. The inner end of each upper arm |8| located one on each side of the reel and which is formed with a vertical slot |82 through which are .stretched between the levers and the reel cover IAS. The engaged lever thus moves away the pivot pin |18 extends. The outer end of each from the button on the brake lever |50 and 25 upper arm carries a short hinge pin |83, the ends thereby permits the spring |52 to draw the brake band taut around the drum. This brings the reel 9| to rest and holds it against rotation until the of which extend into horizontally elongated slots |84 cut through the outer ends of the lower par allel arms |11. web D is pulled again to measure off another The outer end of each upper gripper finger overcap. When no containers are passing through the arm |8| is formed with a rectangular vertical machine, as when the pusher plate 36 is held inoperative, the knife lever IM and the pressure plate I |12 are held inoperative. This prevents feeding of the web D and also prevents an over cap from being cut off. This is brought about by a stop pin |55 (Figs. 4, 10, 1l and 12) having one end disposed adjacent the path of travel of shank |86 (see Figs. 14, 16 and 22) which is dis posed in a vertical slideway |81 formed in the swing arm |81 on that side. The shank is re tained against displacement by a cover plate |88 which is secured to the swing arm. Each shank |38 is formed with a vertical, elon gated slot |85 in which a compression spring 19| is dispo-sed. The upper end of the spring a lug extension |58 on the knife operating cam engages against a pin |82 which is carried in the arm |23. The stop pin |55 is carried in a bracket 40 cover plate |88. This spring normally presses |51 formed on the main frame 25. The oppo down on the upper finger arm |8| and maintains site end of the stop pin is connected by a link its fingers |55, 1% in a closed position, as shown |58 to a short arm |59 formed as a part of the in Fig. 14. lever 39 mounted on the container pusher plate actuating rock shaft 31. Actuation or opening of the gripper fingers |65, |65 at the proper time is effected by rods |95 (Figs. 3, 4 and 13) which are secured to the up Hence every time the pusher plate actuating ~ shaft 31 is rocked by the edge cam 42 to feed containers into the machine, the short arm |58 per ends of the shanks |88 Rods |95 extend up through bearing blocks |56 on the outside of the pushes the stop pin |55 into the path of travel swing arms |51. The upper ends of the rods are of the lug extension |56 on the knife cam arm 50 bifurcated and carry cam rollers |91 which oper |23. This occurs in time with the movement of ate on cam surfaces |88 of a pair of internal edge the knife cam arm and while the arm is at rest cams |98. just prior to making a cut-off stroke. Normal 1y the pin is again withdrawn before the cut-off stroke is performed. end of a rock shaft 28| which extends through the swing arm pivot sleeve |68. One of the edge cams |99, the one at the right as viewed in Fig. 3, is formed as an integral part of a lever 2&4 which is connected by a link 285 (Figs. l, 5 and 13) to a substantially vertical cam However, when the pusher plate 36 Vis stopped from feeding containers into the machine, the rocker shaft 31 is held stationary with the stop pin |55 in an extended position. Hence when the knife cam arm |23 is about to operate through its next stroke it is stopped by the lug extension |55 striking against the extended stop pin. This Each cam is mounted on the outer lever 285. The cam lever is mounted on a pivot pin 251 carried in a boss 258 of the upper frame Se. The lever carries a cam roller ‘289 which oper- ’ ates against an edge cam 2li mounted on a cam prevents the arm from making its stroke and shaft 2212. A. tension spring 2 i3 stretched between thus prevents operation of the knife ||8 and the lever and the upper frame 54 holds the cam movement of the anvil pressure plate |02. It 65 roller against the cam. The shaft is journaled in is this action, in connection with other elements bearings 255 formed in the machine upper yet to be described, that prevents feeding of the frame 81|. web D until .containers are again brought into The cam shaft 2|2 is rotated continuously by a bevel gear 22| (Fig. 5) which is mounted on the the machine. -The measuring off of the overcap by drawing outer end of the shaft. The gear meshes with the web forward is effected by a pair of upper and is driven by a bevel gear 222 which is mounted and a pair of lower gripper fingers |65, |66 (Figs. on the upper end of a vertical tubular auxiliary drive shaft 223. The drive shaft is journaled in a 3, 14, 15 and 22,). One upper and one lower bearing 224 in the upper frame 94 and in a bear finger are located on each side of the path of travel of the web D. The fingers on each side 75 ing 225 (Figs. 3, 4 and 6) in the lower frame 25. 2,406,784 10 The lower end‘of the driveshaft223 carries av spur gear 228% (see also Fig. l1); which meshes with an idler gear 228 mounted on an idler shaft 23 | jour naled in a bearing 232 formed on the machine main frame. The idlery gear 229, meshes with af gear 235 which is mounted on the crank shaft 41 feeding containers into the machine, the vertical shaft 25.5 is held stationary andV its stop pin 253|` is` in an extended position in the path of travel of the finger actuating leverv 253. Thust the stop pin prevents actuating of the lever and> this holds the gripper fingers |55, l 5t open so that they will (Fig. 5) driven by the bevel gear connection 45, not engage and withdraw the Vweb D, as herein-‘l 49 with the main drive shaft 50. before explained. l , v After the overcap is severed from vthe web- the Thus through this connection with the main drive shaft 56, the cam 22| rotates in time with 10 swing arms te? resume, their backward swing and thus carry the cut-off overcap into a position di the other moving parts _of the machine and ac rectly over the tcp of the container B which is tuates the cam lever 236 and its link 205 to open being lifted by they lifter pad' 65. The gripper 1in and close the gripper fingers |65, |65 as herein gers |65, |65 holdv the- overcap in this-,position before explained. This opening and closing of the u gripper fingers is also effected in time with the 1-5 until it is picked upby the container. When the.- topof the rising container B- engages movement of the swing arms |61. The swing arms |61 are shifted by way of a link 24| (Fig. 4) which pivotally connects the swing arms with the lower end of a Cam lever 242 (see against the suspended overcapn, the latter is clamped down tight. on the; container before the grippery fingers release it. Clamping of the>~ ove-r also Fig. 5). The cam lever is mounted on a pivot 20 cap. is brought about by a knock-out plunger 25| (Fig-_, 13); which-is.- disposed in a clinching head pin 243 carried in a boss 244 formed on the upper frame 94. Intermediate its ends the cam lever carries a. camV roller which operates in a cam groove 255 of' a face cam 246 mounted' on the camshaft 2l'2'. ’ ' ~ Y ` » Y The rotating cam 24S iirst shifts the swing arms ist outwardiyfmrougnan idle stroke into me p‘o si'tion shown in 13.. lWhen first brought into 232I securedl tothe upper frame 92. The plunger. is carried on a vertical stem 265 which extends up through a head rsleeveíZ-ëâ> carried~ in >a slide bear ing> 261 in thev head. YNear its top end, thepl-unger y stemis formedwith a socketÍ253in which one end: ' of a rock lever Zâiiisengaged.- » 'I'he rock lever 259 is mountedv on a pivotpin 21| carried in lugsy 212 formed in the( upperV this position,” the ,gripper fingers |65, Iï'o‘íï are open and ‘arefdispiosed’ along-side of' the» anvil >mi andr 30 frame S4. The. inner end- of the rook lever en-v gages in a bifurcated end of a cam lever 215 the, pressure plate |32. These‘partshold'the- lead mounted on a pivot pin214 secured ina bearing ing end of the web D1. While iin this position of block 2_15'bolted tofthe upper frame. Intermethe swing arms,> the gripper ñngersA |55, |66 close, diate its ends the cam` lever carries a cam roller as hereinbefore explained, onto the outer edges of the: web Dwhi'ch project beyond the anvil HH and 35 2.11 which operatesI in afcam groove in a. face cam 218 mounted on the cam shaft 212. l pressure plate |22. The web thus is held tightly by the fingers»y and' it is at'this time that the pres f ÉThus as the cam 218. rotates, it rocks the cam llever 213 which in turn shifts the rock lever 269. surerplate` |212> is lifted to release the web. ’ Upon release of the web'D, the swing arms |615 Under contro] of this cam, the rock lever moves movek back or inwardly while drawing the webwith‘them a distance equal' to?k the length of one the knockout plunger 26| down. against4 the over cap and the top of the; rising container to-holdî the overcap.V This isfthe overcap: measuring operation overcap in place. Y As theV container conti-nues to mentioned> above and> when the web is draw-n out rise into the clinching. head- 262, theI plunger rises with it> and thus prevents displacement of the far‘enough the swingl arms pause i'n their ,travelv to permit the cut-off knives |18, l'ä'tto sever the 45 overcap. from> the web, as herein'before explained. During these measuring andl severing operations ther overcap is' held" tightly- between the gripper fingers |551, |65. ' overcap. , » As the container B`A with its superimposed over cap Aenters the clinching headY 262, the outer marginal edges' of the, ,overcap which project' be yond the outer edges of the container top engage WhenV no containers are passing through the 50 against segmental olinching jaws 285 (Fig. 13) machine, the'gripper fingers |25, H53 are prevent' ed from functioning. The web D will not be gripped and> will not" be pulled out for cutting. This interruption ofr normal function` is effectedy which wipe` the edges of the overcap down adja cent the sides of the container.A Four such jawsr arey illustrated. These jaws- are- secured to the lower- ends of vertically disposedv arms 265 (see bya stop pirr 251 (Figs. 1,4,.'5fand 13) which oper 55 also Figs. 19 and 20) which are mounted- on ates in conjunction with the stop pin F55 ofthe pivotr pinsî 281 carried inA lugs 288 formed on the knife actuating lever |23- hereinbefore explained'. head 262. , ~ The stop pin 25|= is located: adjacent the cam . Adjacent thev lower ends, the head arms 283 lever> 206 and’ slides inf a bearing bracket> 252> se' areV formed with beveled-_ cam surfaces 29|> which cured on the main frameA 25; One‘endf of the'pin 60 eng-age against cam rollers: 292 mounted on a is; connected by a link: 252 to,- an arm 2511¢ mounted on, the upper' end of; a Vertical' shaft. 255. VAdja~ disc- 293» in the headv 262.` The arms are.A held in engagement with these cam rol-1ers by- a coiled cent. thea-rm 2541, the shaft,A is carried in a bearingY brackety 25%“,> which extends out' from' the main spring 291|` whichv encircles the. head outside of and engaging against the arms. » frame: 25. The: shaft extends down through the 65 . The disc: 293 is formed integrally with the head middle; of the,v tubular shaft 2:23 and at- its lower sleeve, 263. The upper end> of the head sleeve endA carries ana-17111251 which is connectedI by a is secured by an adjusting screwv 29-1 to a sliding link 258 tothe cam lever bracket ilßl'which` is disposed: ina vertical slide, Hence as the cam', lever Se’rocks to actuate the way set offA by cooperating gibs 352V (Fig. 3) bolted pusher plate 35 tot position containersïi-n-.the 70 to. thev upper frame 94‘. mach-ine', the lever also osci'l-lates thevertical shaft The sliding bracket 36| is shifted vertically toV 255 and thus-movesI the stop( pim 25|' into and.- out. actuate; thev clinching jaws 28.5'. For this purpose of- the path off travelÉ of the gripper iinger actuat theV sliding> bracket ispivotally connected to> one ing: lever 2062' in time with. theÄ movement, ofthe;y end of a. pair of spaced and, parallel toggle links l’ever.` When the pusher plate '3.5: is-stopped- from; 715 305 (Figs. 3, 13- and» 19).» whichat their opposite 2,406,784 construction and arrangement of the parts with ends carry a pivot pin 3|J6 on which is mounted a >toggle arm 301 and one end of an actuating rod out Vdeparting from the spirit and scope of the invention or sacrificing all of its material ad 368. The toggle arm 301 is keyed to the swing vantages, the form hereinbefore described being arm pivot sleeve |68. The actuating rod 398 is connected to the upper CII merely a preferred embodiment thereof. I claim: end of a cam lever 3|| mounted on a pivot pin l. In a machine for applying protective over» 3|2 carried in brackets 313 formed in the upper caps to moving containers, said machine includ frame 94. Intermediate its ends, the cam lever ing an overcap applying head, a pair of swing carries a cam roller 3|4 which operates in a suit arms located adjacent said head and means for able groove in a face cam 3|5 (Fig. 5). Hence rotation of the cam 3|5 rocks the cam effecting relative movement between theV con tainers and said head for applying an overcap to a said container: the combination of gripper ñngers mounted on said swing arms for pulling a continuous web of overcap material to measure lever 3| I and-through the toggle connection with the sliding bracket 30|, shifts the head sleeve 266 through a downward or operating stroke and then upward through a return stroke. On the down stroke, the sleeve depresses the disc 293 and the cam rollers carried thereon and this per mits the spring 294 to move the jaw arms 286 inwardly. This movement of the jaw arms presses off a predetermined length of the web, cutting devices disposed adjacent the path of travel of said web for severing the gripped measured-off portion of the web from the remainder of the the jaws 285 inwardly against the wiped down 20 web'to produce an individual overcap, and actu ating means 'cooperatively associated with said swing arms, said actuating means operating to shift the arms to first 'measure 'off the overcap and thereafter to locate the held cut-off overcap in position between the container and the apply-‘ edges of the overcap A and thus folds the over cap edges up under the overhanging top ledges Cl of the container. At the same time the head sleeve presses down slightly on the knockout plunger 26| andthus sets up a squeezing action between the plunger and the jaws to bond the folded-under edges of the overcap to the container ing head. ’ ' ' ’ 2. In a machine for applying protective'over caps tomoving containers, said machine includ ing an overcap applying head and means for The jaws285 are heated, to facilitate the bond effecting relative movement between the con 30 ing> ofthe overcap edges to the containerY ledges tainers and said head for applying an overcap by partially melting the wax >on the containerl ledges. Y Y _ Y ` to a said container: the combination of a pair of This heating is effected by electric heating units swing arms located adjacent said head, gripper 3|`| (Fig. 1'3) which are embedded in the jaws and which maybe connected to _any suitable source of electric energy for heating theunits. "‘- It is this folding and heating action on the over cap that permanently clin'ches it in place on then container. to produce an overcap, actuating'means cooper atively associated with said swing arms, said ac tuating means operating to shift the arms to are opened by an up-stroke of the head sleeve 266. This brings the cam rollers 292 on the head sleeve disc 293 against the bevel cam surfaces ofthe first measure oil' the overcap and thereafter to jaw arms'2186 and thus Vspreads apart thearins and the jaws carried thereon, under the re-, y _y When the jaws 285 are fully open, the lifter pad 65 carries the sealed container down to its off a predetermined length of the web, cutting devices disposed adjacent the path of travel of said web for severing the held measured-off por tion of the web from the remainder of the web After such a clinching operation, the jawsf235V sistance of the spring 294. ñngers mounted on said swing arms for -pulling a continuous web of overcapmaterial to measure 45 locate the held cut-01T overcap in position be tween the container and the applying head, means for operating said gripper ñngers inde pendently of said swing arms to retain a grip on the cut-off overcap while the latter is cut off and original level in readiness for discharge from the carried to the container, and means for actuat machine. At this level the container is engaged by‘a discharge ñnger 32| (Figs. 3 and 6) of the 50 ing said gripper ñnger operating means toY re lease the severed and positioned overcap immedi stroke bar 58 and is pushed off the lifter pad 65 ately prior to the applying operation. onto a discharge belt 322. The belt- operates 3. In a machine for applying protective over-V over a pulley 323 mounted on a short pulley shaft caps to containers, said machine including vfeed 324 (see also Fig. 10,) carried in a bearing 325 ing devices for introducing containers into the formed in the gear housing 62,. 1 machine in a continuous procession, means en The pulley 323 is rotated constantly by a bevel gageable with the containers as they enter the gear 321 which is located inside the gear housing machine for separating them individually from 62 and is mounted on the pulley shaft 324. This the entering procession to arrange them in timed gear meshes with and is driven by a bevel pinion 328 mounted on a vertical shaft 329, the upper'end 60 order, auxiliary feeding devices for intermittently advancing the individual timed containers into of which is journaled in a bearingV 33| formed in and beyond an overcap applying station, and an the bracket 6| secured to the top of the gear overcap applying head operatively disposed at housing. The lower end of the shaft is journaled said station the combination of means for :mov-Y in a bearing 332 formed in the _bottom of the ing an individual overcap into positionrbetween housing. This lower end of the shaft extends be a said container and said'applying head, said low the bearing and carries a bevel gear 3'33 which moving means including a pair of swing arms meshes with a driving bevel pinion 334 mounted located adjacent said head, gripper ñngers on the main drive shaft 5U. Through this con mounted on said swing arms for pulling a c_on nection the discharge belt is constantly operated to carry containers received thereon to any suit 70 tinuous web of overcap material to measurel olf able place of deposit. A It is thought that the invention and many of its attendant advantages will be understood from a predetermined length of the web, cutting de vices disposed adjacent the path of travel of said web for severing the measured-olf portion of the web from the remainder of the web to produce the foregoingl description, and it will be apparent that various changes may be made in the form, 75 an overcap, and actuating means for moving saidV 2,406,784 14 time with said cutting devices to hold the over cap while it is cut from the web and to carry the cut-off overcap to a position for application swing arms relative to said head to properly lo cate the overcap with respect' to the container preparatory to the applying operation. ` 4. In a machine for applying protective over ‘ caps to containers, the combination of means for holding a web of overcap material, a pair of to a container. 5 5. The combination as defined in claim 1 wherein the machine also includes means in the swing arms pivotally mounted relative to said web overcap applying head movable into engagement holdingmeans, gripper fingers on said arms for gripping an end of thev web and for pulling the with the located overcap to hold the latter in web through said holding means, cutting devices pivotally mounted adjacentV said holding means for cutting the web to produce anv overcap, and actuating means for moving said swing arms in position against the container during relative movement between the container and theV head and during the overcap applying operation. AUGUST E. ALMGREN.