Dec. 10, 1946.v 2,412,369 客 E. s. TASCHER CARTON FORMING MACHINE h wnw.9 4o 3l rIlf� ,0.4 Y ?d vS 3 5 o3l mla|IncaeZo ~9a8eo /oo,4 W..2_IHU H s4) d ___ lsu ooL .1f 1.|.l � l.ll l| 7 033 |._3 .mv 2lv % ,f l籾.Zl n.l/籪k IU/r 1m H 2_/32 eZ 2\ |eM_1|| u w 4 173\ w�-y靗 "`,lIl:B M 97. l� 3f `T � M uMM ,qw , m t|\\ 2� _l|ocau ww ?l OCLt /03 RRl Dec. 10, 1946. ' E_ 5. TASCHER 2,412,369 CARTON FORMING MACHINE Original Filed April 17, 1941 ' _ BY l 8 Sheets-Sheet 2 � - 陀W蒚Z'ZJ蒠 Dec. '10, 1946. _ 2,412,369 E. s. TASCHER CARTON FORMING MACHINE or韌i?na1 Filed Apr11 17, 1941 s- sheets-sheet sl m2 Q . l N � o: 2 111mm? IN VEN TOR f. s. Msc/_fm BY _ f _' . ATT躥F/YEY � Dec. 10, 1946. ` E, s, TAS`CHER ? 2,412,369 ' CARTON FO蚏MING MACHINE Originalv Filed April 17, 1941 ` 8 Sheets-Sheet 4 ? INVENTOR. - � �/ISCHH? A镲aH/VEY _ Dec. 10, 1946. ` E. s. TASCHER 2,412,369' CARTON FORMING MACHINE original Filed Ap'r?il 17, 1941 8 Sheets-_Sheet 5 INVENTOR. I E. 5- T罶C/?蚮tq 317 BY 26!W77 %M7( Dec. 10, 1946. E. s. TASCHER v 2,412,359 `G罵TON FORMI袵? MACHIN� original Filed April 1v, 1941 s 'shams-sheet e ` INVENTOR.> E 5. TASCHER " 縔 Dec. 10, 1946. 2,412,369 E. s. l'msm-1ER CARTON FORMING MACHINE .original Filed April 17. 1941 8 Sheets-Sheet 7 \ INVENToR. �'. 5.' FISCHER BY ' ? . �" EY Dec. 10, 1946.~ E. s. '?AscHER ` > 2,412,369 CARTON FORMING MACHINE ' Origin鄉 Filed April 17, 1941 31.5 8 Sheets-She?etvS � / h l I "In l � i INVENTOR. l E. s. TA .SCH/5R _BY 'f ` ' '.0 ,ff AZE'Y 2,412,369 Patented Dec. 10, 1946 UNITED STATES PATENT o?FeFlcE N ational- Biscuit Company,"` New 鞾ork, N. Y., a -corporation of New Jersey v = i ' - Original application April 17, K1941, serial Nov 388,958. Divided 'and this application' May 211. 1945, Serial No."595,511 12 Claims. v (Cl. .Q3-351.1) by the> machine may be adapted to?forming _and locking?颿artons of many different sizes ._ and My invention pertains to carton forming ma chines. shapes; The embodiment that?l >have selected for il lustration is -designed particularly y'for forming cartons, such vas are commonly used for pack-` ` h ' ' vThe above and other objects and adyantages over prior carton `for-m ng machines l_are attained Aby my invention,an adaptation Aof which 1_ _have illustrated in' 縯he accompanying drawings' to which referenceis-had? Yfor a Vfull understanding aging crackers, cookies, and other vfood products but the invention is -not limited thereto. Such cartons are formed from~ carton blanks having thereof. side and end flaps4 andinterlockingtongues and lf) slits. yI_n??machines"heretofore used for forming 'l ` f' i Fi'g. 1 is a vertical section of a carton >forming andjfolding these cartons, all `operations' oi fold ing the sides and flaps and inserting >the locking . machine made?in accordance with my invention, tongues'in the slits have been performed by cam Fig. 2 is a front View,l partly` in elevation, partly in section and `With parts broken away; the view being taken >-substaritiall粂 onthefline I-Iof actuated " arms' 'a`nd"`_1evers.v This requires very accurate adjustment, an?d'tir'ning of all the parts and'the constant attendance of a mechanic to maintain the adjustment. _Even with the great est Acare;maladjustments and incorrect timing 15 ' ? ` - indicated the fynea?n'sl for opening 4the carton slitsy and invA ' serting the locking tongues, and also the4 means for fremoving the carton>` from the' tormer, the ` section being >indicated byA theline 4-4 on'Fig,_ 2_1.l is" a view at right `angles to Fig.v fi,A the Fig. 5 2.5 section being Aindicate/d by the line Vtif-"� on'xF頶�. 3'ar1`d4. . ` used, 'thereby obviating the difficulties inherent ' ' Another `-ob~ject is tofprcvide a machine in the 4articles -being operated upon. v ' lfront . sub- ` ` frame-assembly or?unit. lFig. 7 is a similar View of a rear sube-iframe assembly or unit, ' i " ' ? " ` Fig. 8 is a sectionon the line `8-.�of Fig.'` 3. 35. ' Fig�. 9 shows a former _or mandrel about which ' a large size'c'artonl -may be formed. Fig. lofshpws'a- Smau size former and new it is. attached to in Fig.'9. 40 " @65eme @OSS-bar? as, that Stern Fig. 11 is a section A,Online Il-II of rFig.?10 ' showing the adapter?that is used toconnect` the former?to the cross-bar. ? Another object is tocprovide sub-.frame _as semblies carrying 縯he ?carton -folding and locking means that caribe-_removed as units and quickly replaced by other similar interchangeable units "` Figo -is 'a `perspective _View of a formed times the -operations of folding', opening whichlall operations ofthe machine are timed by ' blankis opened? to `insert the tongue. 30 which the movement ofthe` carton as it is being the slit andV inserting the locking tongues, or in ?mh Fig; 5-f-A shows how鐃he slit in Vthe _carton Another object is 4to?do?away 'with the com plicatedl cam- and ylever mechanisms heretofore ' ' Fie. 4, is an enlarged Stegt靟h鄉 ,view ?awning 20 simplify the `_construction and operation of 'car-y ton forming 'and filling machines and increase " " l Figw�'靤 a plan View, partly int, section sub An important Vobject of my yinvention is to in 'their opera-tion and timing. ' stantially on the line 3?@ otQFig.- 2. " flexibility and adjustability, a complete machine being required for each size and style of carton. their speedand- certainty of operation. 2. � the View being taken' substantially as by mel une' 2.-.2 fon' Fig. '1; " will occur and `many Acartons will be destroyed inthe- operation. Also, because of the intricacy ofy the -mechanisn'i Yand close adjustments re quired, the speed of Ythemachine and the nurn ber of ?cartons that can' be formed 'in a stated time interval are limited. Another 'objection to machines Vas heretofore used is that they -lack Fig. o o lFigs. 12 to 16 show 駐e steps in the formation of a carton from a blank and liner as performed 45 by l MyV my invention invention. _inrits many aspects" anddetails ` ? to adapt ?the machinel to -form different sizes is adapted to?ruse withA different kinds or types of cartons. of carton forming -r'nachinesjV In Figs. ?loto 111', Another object is to ymake different sizes of I have shown how therinventiori may be adapted forming headsv or blocks -interchangeable on Vthe cross-?bar or vbars and operative with theinter 50 to a machine havinganumber of _forming`blocks moving in an endlessl cycle, and deliveringlonly empty' cartons; But the machine mayfutilize changeable sub-frame assemblies. ? Another'object is to provide an improved means hollowV formers or ?blocks and deliver?iille?df?la'r->r for removing -thelv carton land� liner'froiynV the tons. former lock. ` ` ' ` 籗till another-?object is toprovide means, where 55 This application 1s ` , ' ' ' 'i division of the joint-ap - _, f eine@ � � 'p'lieetien ef wiuiem Bazant and myself, filed and have downwardly and inwardly inclined'su? April 17, 1941, Ser. No. 388,958. feces su, 5| which turn in the back endrne'ps of ' Referring to Figs. 1 and 2, vertical frames |- the carton blank, as best _shown in Fig.~?1. Near the lower ends of these vertical guides are` and 2 are connected at the top by a removable> rear top plate3 _anda removablefront top 1plate .Y 4 and support fafpair of.` vertical columns 5, 6'] a vpair of Yfixed back-closing vplates 52,.,53. which fully turn _up the back sidef of :the carton blank which have adjustable bearings at their upper ends for a shaft 1. vThe shaft 1 carries a pair;v of sprockets 8, 9 over which a pair of endless to complete the formation of the Vcarton as the blank is carried down by one of >the forming " blocks. _ ' . chains I0, || run. Y The lower ends� of theseY `飅o chains pass around a pair of> sprockets l2, .I3-縥 , -- VThe two back closing plates are駒ed in opera tion but are adjustable on short stubs 54, 55 so Y secured to a shaft I4 mounted> in; bearings "n殇r' l the lower part of the frames |`and 2." The shaft# V[that their inclination? or slope can be adjusted?. It willA be noted that the liner holding bars 3|, I4 extends beyond the frame member | (Figs. 2 the guides 42, 43, the arms'44, 45, the vertical and 3) where it is secured to 縜 gear l�'thatv 粇guide>s~_48, 49, _andthe back closing'plates 52, 53 meshes with a gear I6 secured'to?a cam shaft ` >are all secured to .and supported by the rear top plate 3' and this entire assembly is removable as a unit from the machine simply by removing the l1 mounted in bearings in the framesl and 2, parallel to the shaft I4. The opposite endfof the l. shaft |1 carries a gear.Y|3 that meshes with a _ four screws or bolts 56, 51, 58 and 59 (Figs. 3 . pinion .|_Bc _secured to a gear I_8b, _both ofwhich are 縨ounted on aV stubrshaft. The-geary |8b籿 20 and 7). secured te the frame members | end 2 below the front'top plate 4 isa .cross-plate 60 (Figsvl meshes with a pinion l�'secured to a gear |9a, , blophjlof , which ., are mounted on a stub shaft |911 ; that _isf駒ed _in an adjustablearm-ZD. The arm 2_|_)_`i's_v adjustable _about a _bearing 26a that is 25 co-axial with theshaftof afmotor 2| havinga pinion' 2| a for` driving _theggear |912. ~ vA's'b?e'st'shown in Figs. 1 and 3, the top plates 3>> and 4_ are spaced apart so vas to provide an open ? ing� through which _ _ _ thecarton forming blocks 22l may pass, carrying _carton blank and liner down through the opening with them@` The carton formers or heads _2_2 30 and 2) which is connectedv by a pair of brackets 6| ,? 62to the top plate 4. ?The brackets extend j rearwardly` andsupport a feed. table 63 anda pair Theofinner carton'tfblanlgand edge of the feed liner-table guides is recessed 64, 65. to receive a folding plate, 66 to the opposite endsV of which are pivoted the wings 61, 68. The plate 6_6 is fixed to a, rock shaft 69 which is supported in bearings adjacent the front edge of the top plate ` ' _aresecured tol cross-'bars _23 . ` which'蛓 are'._ secured _ near their Opposite ends 4to tne頴iieins mill. } The cross-bars ' extend a shortA distance beyond the chainsjwhere their ends are widened toprovide cross-heads 24, 25which slide in'the'vertical' guides 26?21that are secured to 4.` At one end_the shaft 63 has a short crank 16 (Fig. 3) which is connected to the upper end of> a pusher Yrod 1|,_ the lower end of which is slotted to straddle the shaft l1 and has a roller engaging in a'groove in a cam12 fixed to the shaft |1.> The lower side of the folding' plate 66 has av Y pair.. of lugs 13, 14 in which levers 15, 16 are piv-M ' > ? A _ The'rear top plate 3 has a pair of bearings 281, 40 otally supported. The outer ends of these levers are connected by short links tothe underside of� 29,' _inwhicha rock shaft 38 is mounted. _This the wingsr 61, 68. Theinner `endsfof the levers. ~ `ro蚦lf�"shaft has liner holding bars 3| secured toit 75, rent loosely in eneend of levery n which is andone .of these bars vhas a short extension or pivoted tothe top plate 4 and at its opposite ,end a?rmfto which one end _of a link 32 isY connected. is connected to a spring 18 the lower end _of which The' upper ehdfof this link _isconnected to one is connected in any suitable manner to the cross-'_ _ a'rm 'of' a bell-crank 33 mounted'on a'shaft 34 the-frame members >land 2. plate supported in bearings on _the vertical columns 5, The `other`e`nd of the bell-crank carries a Y,roller 34?V which is adapted to be actuated by a earn 32'籝 carried by the shaftfl. 4_,緼sslflown in Fig,� 50 `adjustablebn?the :Across-frame member shaft 1. 36 _is supported � on ~_ the _ coluin'rl's'�V4 6 ?andy carries a pair of pivotally have short arms vadjustably connected Vto a pair _ _ -_ i is inclined _ ` l ,Y top'plate'� and adjacent their lower ends to the cross-plate'遧). Near the tops of these vertical guides are secured vertical front flap guides 8|, 82`ea`ch of which hasa- slit near the top through which, the no'seforpoint of a springr pressedl Secured to the � vertical guides 1S, 8,0縤s ashort fixed shaft 585 to 60 As best shown in Figs. 2, 4 and 5,'fthe guide 88 ' between the two top plates'遖nd 4 _and adjacent each lsideof the inclined portion is a carton blank guide 42, 43 (Fig. 3). _ " fingers, Veach of the front guides carries a tongue _guide 38, _89 and a 籺ongue presser roller 80, 9|. . ~ _ ?downwardly at.4|jtoward the opening , _ which are'. fixed a pair of tongue飃uide fingers 86,81 (Figs. 2 and 4). Beneath the tongue guide nected to the outer end of the horizontal arm?tof �Theinner or forward edge ofthe top plate 3 _ breaker finger` 83, 84y projects. 55 of link_s.� Mirthe upper endsof which are con粂 the bellcrank _33. _ .~ and 2) are connectedat their upper ends to the thecam 35 may be a split cam _which is readily mounted fold straightening _lingers 31, 38 which 60.- A pairof vertical front guides �, Sil (Figs. l j � - 額 u A forwardly kand inwardly extending arm 44,. 45,1isl secured to the rear top plate 3 adjacent each?bf'飔he guides- 42, 43 (Figs. Sand 1_) which` armsfproject into the opening between the two top'_'platesfand at their opposed edges may be and roller`9� are carried by an arm 90' pivoted to the- guide V1|! and are urged inwardly by the spring 98"'. Similarly, theguide 89 and ,roller 9| Vare carried by the pivoted arm 9|' which is yieldably ypulled inward by the spring 9|". ' I_t . will be noted that the breaker llingers, the tongue _, guide `fingers, the tongue guides, and the tongue presser rollers are substantially in alignment and theyare adjacent the path which will be travelled rounded or carry rollers 46, 41which will be close 70 by the slits cut in the carton blanks.y as the carton. to?theedges' of the formers 22 as they. pass be tween 'thefplate's and will fold -upthe bottom end flaps Vof the carton blan . ~ _. HA, pair of downwardlyextendingguides 48, � are securedito the underside of the rear top 'plate 75 blanks arecarried down bythe former-heads.. _ ?The'front top plate 4?the cross-plate 60, the brackets 6|, 62, the feed table 63, the-front fold ing plate- 66,- the wings61; 68, 縯heshaft 68,'Y the ' levers 13, 16, 11,`the spring 18, the Vertical guides Y 1.9, 80, the flap; guides 8|, 82', the breaker fingersy 83., 84, the tongue guide fingers 36, 31., the tongue guides .88, 89 ~and the? presser rollers 90, 9|. are all secured together as a unit and' can be re moved frein the machine asa unit simply by dis connecting the pusher rod' 1|, the lever |03 land removingv the three bolts 92, 93, 9.4 in the top plate andthe two bolts. 05., 90m the cross-plate. This unit may be. provided with eye-bolts for ease in handling, as. shown in Fig.. 6. due to their飋wn weight. In vorderltolassure-re'-> moval of the'cartons from 'the' formers I have provided. the striker arms which are.> bestA show-n in Figs. 1, 4 and 5. f `Astriker head |~|'2-',V which may be made?in two parts so as to be adjustable',> is' secured to the shaft |4. and carries. a pairv of ' pivoted varms ||3., ||.4. which are.> restrained-v againstV movementreverse to' the direction' of'` roi An arm ||1 carrying a stop ||8 is adjustable on 9.1 (Fig. 1) which the stub 55 that carries the back closing p1'ate'�'. is. secured toa pair of racks 98, meshing with a pair of pinions 99 which? in turn mesh with a pair of? racks |00.r formed incr secured to theY support' ingbrackets 6|, 62. The pinions 99 are keyed to a shaft |'0| to which a link |.02i is pivotally connect ed, theother end of the� link being pivoted to a rocking lever |03,~the lower end> ofwhich is loosely inpFig. 4. The position of the striker head'on` . Thefeed table. has a carriage mounted on a rock shaft; |04. A shortv arm |05 is and at >its outer end the arm has a short� lever ||~9.carrying a roller |20 loosely pivoted. on it.. This short.v arm is adapted to swing forward until~ it strikes the stop pin ||8 as shown in dotted lines the shaft I4 is adjusted so that one of the arms; H3;` or ||||A will contact the roller |20. and swing the arm against the stop | I8 at the time a former haspassed the lower ends of theguides 48,f49;and keyed to the shaft |04 adjacent the lever |03 and 20 19'y ~80 when the-carton surrounding the` former atits'free end hasa slot |06 through which passes will be in the position shownin dotted lines inv a bolt` |01 which screws into the lever |03. By means of this slotted arm the limits of the stroke ofthe feed carriage can be adjusted. ,The shaft |04 is mounted in bearings on the frame membersy | and 2 and at one end has an arm |03 keyed to it, the free end of the arm being pivotally connected to the lower end` of a pusher rod |09 which at its upper end has a slot straddling the shaft |1 (Fig. 1) and a follower - which runs inthe. groove of a cam ||0 keyed to the shaft |1.. The constructionv of the feed car riage 01 and of the racks and pinions by which movement of the lever |03 is transmitted to the feed carriage is not shown in all of its details - Fig. 4. When the arm (as say,l ||3`) strikesthey roller |20, itv will be stopped butr the shaft.4 |.4.wi11 y continue to rotate thus relatively turning the arm ||v3 backward about its pivotal support and put. ting tension on the spring ||`5. As; the'y shaft. continues to rotate, a point is reached, asshownx by dotted lines in Fig. 4, when the striker |;|?3. will snap-past the roller |20? andstrikeA the up' standing edge of the closingY flap 3|6 ofthe carton-and push it from the former., The. carton. will then drop to the'conveyor belt |-2 |A and ber-carried'V upto the packaging machine or wherever it isto be used; > ? The machine shown in Figs. 1 to 11 is designed.` because it is of usual- construction and? per se to make cartons of many dii飁rent sizes. Here--. does not form any part of theY present inven tofore, when changing a machine- of this gen tion. The operation and construction of these eral type to make a diiferent size carton, it Wasi parts are well-known to those skilled in this art. necessary to substantially rebuild the machine; Returning now to Fig.l 1 there are six` carton ILO because the blank feeding mechanism and all the. forming heads 22 shown on the chains butA any guides and stops on the front and rear plates had., suitable number may be used. These formers are tobe changed and the opening between the .tworectangular in outline and the bottom of each plates either narrowed o'r widened to s'uitthe former as it descends on the- left hand side of different size carton. It wasl also necessary to the chain (Fig. 1) is of substantially the same 45 change the timing of` alli the cams and'v operating size as the bottom of the carton ?that is to be levers throughout the machine. It was also nec formed. Each. of these> formers` or heads ?has a recessl |?| | on- each sidegwhich, as it carries:v the essary tol change the . relative position of the cartonjblank downward, will?have its lowerin clined' edge come substantially in alignmentwit-h the slit that isformed in� thel front flaps ofthe of different heights fory different' cartons. It was a matter of several days? Work to- change. a ma chine over from one size to another and required.y cartonblank. These recess'es'l | |> andr the slit >in the carton blank come in alignment: with the breaker fingersj83f, 8,4, the function; of whic'hzis to press i-_n on- the> carton materialy adjacent the slits and break anyl iibers 'that Imay> be' adheringf?or` which were not> cut completelyl through 'when the carton blank wasl cut out.> As the former then passes down carrying the carton with it, the guide chains. I0, || because the forming blocks 22'were. the services of highlyskilled mechanics'.` . By means of the present invention, themachine can. be changed over from one size toy another in avery short time, usually not more than 1/2 hour by two mechanics.- This is a great advan-' tage over previous machinesv which were so* diftl' cultv to adjust `for use of 4different size cartonsthat it was theusual practice to have a complete> fingers 86, 81 engage> thel locking tongues on the 60 machine for each size carton.? . rear carton iiaps and turn them inV -so that theyy kWith'the present invention, it l"is not necessary* will` engage behind the guides 88�, 89 Vand'` then'V as tochange the timing of anyv of the mechanism the former continues on down the rollers 90; 91|l when changing from one size carton to` another. will press the material of the carton adjacent the All that is done is to remove `the front and.` rearA top edge 'of the slit into the recesses |'| | so that interchangeable units, las illustratedl in'Figs. 6 the slit' is opened, and the locking: tongue can be andl 'Land replace each one' with a corresponding forced through the> slit tor complete the forma unit adapted for the -new size of cartf0n'."'The tion ot the;carton�, (Figs. 5, 5'--A). ' ' i formers'22 are also changed but these are' adapted When the carton reaches the lower end of the` guides.A 19?, 80, it is completely formed' around?the 70 to be connected to the cross-bars 23 so� that'thelower edge of each former, as it comes down in forming block. 'I'he tucking ii'ap 3f||靬 extends contact with the carton blank, is the same dis-? up from? the rear wall: of -the carton: as shown in tance `below'its cross-bar 23 irrespective of the Figs. 1` andv 16r as is usualr in'. this 籺ype of carton�. size of the' carton or former. Thel means" ?for Since these? cartons' areI not filled 'they are very interchangeably connecting the differenti for-mers@v lighty andi will not drop; always> from ' the formers` 75 2,412,36e- ' to the ,cross-bars is illustrated in Figs. 9 to .11;Fig.,_9?illustrat,es the` former-substantially as wall 313 of the carton. At the same time, through the pull of the spring 18, the' end flaps 61, 6.8.are shown-in 1._ _Each cross-bar23A has a [pair turned in `folding in ?chefsides of the liner ?and ofylo?cating lugs or stops- 23', which. are ,spaced apart a distance equal tothe largest'sizerof former Ul the front end flaps `311, 318 as shown in Fig. 13. As the former continues to press the carton blankv that'will be vused on the machine. >This isas and liner down the next operation is ?for the roll-Ashown in Fig. 9. Each former hasa slot in its ? ers 46, 41 to fold up the bottom end 馻ps 3| 1,312.1l upper end in which the cross=bar 23 駎s?so that together with the?overlying fold of the liner as ~the lugs 23? abut ?the two sides?of the- former. shown in Fig. 14. YIn this position the fold Pins orbolts 22a then secure the formers toi the 10, straightening 駈gers 31, 38have straightened; cross-bar; In '.Fig. V10 we have illustrated the out'the rear folds 23| in the liner and the遚arton smallest size of former which may be used on is- substantially in the position shown inFig. 14..l the machine; In this case an. adapter 22h is The fingers 31, 38 are now swung up and as the; secured to the former 22?. and at its upper end carton?continuesV to descend,`the'back panel 3114i I thisY adapter has a vslot to receive the cross-bar 15 of the carton and top 315 are folded up' by the ? 23 andis of the same length as the former 22 so downwardly and inwardly inclined> front edge Y41 that the adapter will 駎 snugly between thelock of the飏e'ar plate 3. . The inclined faces 50, 51 of - inglugs 23?. The adapter is then secured to the the vertical guides 48, 49' engage the flaps '321, cross-bar 23 by the same pins or bolts 22a that are ?used for securing the other sizes` ofV formers. 20 322, 321 and 328'and gradually'fold'them in-' wardly. During this time the slits 319,320 have ~ The adapter 22h is of such length that .when the passedbeneath the breaker fingers 83,84 which? former 22' is secured to the cross-bar the dis break> open the slits provided they have not been tance from the cross-bar to the bottom of the cut fully open when the carton blanks were formed. former would be exactly the same as'the distance As the carton> descends further the locking from the cross-bar to the bottom of the former 25 tongues 323, 324 will engage in the grooves in the 22; This relation is the same for allr sizes of lingers 86, 81^which are� inclined inwardly formers intermediate the largest and smallest ' Vguide toward the former and as the tongues slide along sizes illustrated. BY keeping this distance con; them they are turned in toward theV slits and also`> stant from the cross-bars to the bottom of the formers, iti is not necessary to change the timing 30 are positioned the correct distance from the slitsso that when the rear side of the carton is-folded of the4 chains 10, 1 I when changing from one size into its 駈al position by the plates 52, 53, the carton. to another.. All that is necessary then tongues will be in exact alignment and ready to in changing therformers is to remove the pins enter the slits 313, 320 when the latter-are opened or bolts 22a which releases the formers then on by `pressure of the rollers 93, 91 on both the the machine and to replace them with a different 35 tongues and the carton above the slits. (See Fig.v size, securing the' new formers in exactly the 5-A.) These rollers not only open the slits but" same'relative position to the chains by means of also press the locking tongues?駌mly against the the pins 22a. When the formers are thus assem-v sides of the ilaps 311, 318 directly above the slits bled on the machine and the properv size remov so that as the tongues are pressed forward by the able front and rear units are >in place the machine 40 is ready for operation with the new sizecarton and it is not necessary to change the timing of any of the >parts except in some cases it may bey ASV-the former 22 carries the cartondownbelow the rollers 90, 91 one ?of the strikersr113, 114 strikes the flap 31B and pushes the carton olf, advisable to make a slight adjustment of the striker arms 113, 114.?- ' � back closing plates 52, 53, the tongues must enter in the slits and lock the carton in formed position." ` " y if4 it does not drop off of. its own weight; to theI The'method of folding the` carton blank andi belt-,121 (Fig. 1).� liner is shown in Figs. 12 to 16. `A carton blank v229;and liner 230 are fed into the machine as -. .I ~ Asf clearly shown in Fig. 2, the arms carrying the rollers >911,111 are urged inwardly by` coil` shown in Fig. 12 spanning the lgap betweenfthe springs or other suitable means. front plate 4 and the rear plateS. The carton While I have shown `rollers for opening the carton slits, rounded blank is marked with score lines ysoas to provide apanel`310 which will form the bottom of the 1 surfaces or cams on the arms operate satisfactorily* but there is less friction and wear when rollers carton and which' lies directly over the-opening ? 90,91areused. inthe top frame and beneath Vthe former 22. Y A �. " � l ' Other score lines on the blank provide bottom 55 .'I?hefoldstraighteningf靚gers 31,. 38 shown in Fig. 2 generally are notnecessary when the car end flaps 311, 312, a front panel or side 313, a tons are small,l as say'lessthan one pound capac back side or panel 314, a cover 315 and a tuck ity, but when larger cartons are used, 'they assist� Y 316. At the two ends of the front panel 313 are materially in keepingrthe liner folds straightlan'd" front flaps 311, 318 each of which is provided contribute to higher speed of operation. `.Whenr ' the machine is usedfor. forming cartons without 314 is provided with opposite end flaps 321, 322 ? liners, lthe liner頷ol'ding'bars 31 and the fol-d , each of which has a locking tongue 323, 324 ' straightening lingers 31, 38, Itogether with their' which, when the carton is formed enter the re with a slit 319, 320. 'I?herback wall of the carton spective slits 319, 3213. Cuts 325, 326 separate top ` closing 馻ps 321, 328 from the cover 315 and these top flaps are connected along score lines to the 1 end or locking flaps 321, 322. This carton blank is of usual form. When the carton blank and liner have been inserted in the machine the former 22 descends. The 駌st operation as the bottom of the former operating mechanisms, are omitted. ` v Asfshown in Figs. 3, 7 and 8," therrear remov able unit used With the machinewof Fig. 1 may be Y positioned on the frame by dOWels 355, 356.2V I have greatly simpli馿d?the construction'and ? operation of carton *forming �'machines' particu-� larly `machines adapted- Ito form cartonsk from Y blanks> having interlocking Itonguesand slits; this HeretoforIe, type',` theVinback machines closing� forplates, vforming vthecartonsof breaker; fingers V(ifk used);lthe tongue guidee駈gers, and i to >rock the shaft 69 which raises the front plate the slit, opening lingers. (corresponding> topresseri l 66 folding up the frontof the liner andthe frontv 75 `rtillersflllt;91) _were all operated遙y levers-which; . starts to force the carton blank down between the front and rear top plates is for the cam 12 �412,369 . 9 in turn were actuated by cams. This required very accurate manufacture of all the operating parts and necessitated their being kept inexact adjustment, otherwi-se the machine would mal function. This has always been -very dif?dcultto doY and it has limited the speed at which such machines could be operated, ' ' ` By means of the present invention all' of these moving 玴arts l(cams, levers, shafts, fingers) are done away with?and theseveral functions of -fold i-ng up the back ofthe carton, opening the slits, inserting the tongues-and so forth are performed automatically by stationary parts as the carton being formed is carried pastthese >several parts. In other words, timing of ther-mechanism is done away with and -the carton be頽g- operated upon is its own timing means, so that all functions must be performed at the proper time and in the proper sequence.` This greatly simplifies the operation of the machine and enables it to be operated at speeds heretofore unattainable because no matter how fast the carton blanks are carried down by the formers, the sequence of operations necessary to fold the blanks into cartons -and lock them together are timed and performed automatically by the descent of the carton. vHaving thus described my invention and illus trated how it may be used in carton forming ma chines, VI claim yall adaptations and equivalents -thereof that may come within the spirit or within ? the scope of any of the following claims. 10 ft'o'lthe front 馻p guides, fixed guide fingers secured 籥djacent the outer edges of the front guides below the, front flap guides, yieldable tongue -pressers secured to the front guides below the guide fingers, a rock shaft supported on -the'top ' plate adjacent its front edge and above the -front guides, a folding plate secured to said shaft and `normally lying withina recess in .the top of said >top plate, a feed table secured -to said top plate, and a pair of brackets having vertical legsconnecting vthe top plate and cross-plate and horizontal legs sup porting said feed table, all of ,said parts compris ing a removable unitary structure, ,thetoppl?ate and cross-plate having means for securing the unit assembly to the frame'of ythe machine. _ 4. In a-?machineof the class described having -a supporting frame, a removable unit Vassembly comprising a rear top plate, liner guide fingers and stops secured to the top_of said plate,bottom `flap folders secured to the top _plate and vextend ing forwardly and inwardly therefrom, a'pair -,of downwardly Aand 4oppositely disposed vguides fixed at their upper ends to the top vplate?and-sup ported wholly thereby, downwardly 籥nd forwardly inclined kback .closing plates disposed between '_th'e guides and secured one to each guide adjacentits lower end and supported wholly'thereby, the rear ltcp plate having means for securing the` unit assembly to the frame of the rr-iachine.> ` ' _ 5. In a machine vof the classdescribed, a >re movable unit assembly comprising a rear top plate, 'liner guide fingers and stopssecured to the top of said plate, bottom fiap rfolders Vsecured to l. In a machine of the class described having a the topy plate and extending forwardly and in supporting frame, a removable uni-t assembly :wardly therefrom, a pair of 籨ownwardly and >op Comprising 'a top plate, a cross-plate below the :1., positely disposedguides fixed at their >upper Vends Atop plate, parallel front guides connecting the top Ato the top plate, fixed. downwardly and forwardly . plate and cross-plate, fixed front flap guides per inclined back closing >plates disposed between the pendicular to the >front?gu-ides and secured adj a lguides and secured one to each guide adjacent cent thereto,yieldable breaker fingers fixed to the Aits 頻ower -end and supported wholly thereby,I and front fiap guides ~and engageable by carton flaps vWhat I claim is: y - � = ' moving along the'guides, fixed guide fingers se cured adjacent theouter edges of the front guides ?below the front 馻p guides, and yieldable tongue pressers fixed to the front guides below the guide fingers, the breaker fingers, guide 駈gers and 1 -ftongue pressers being substantially in vertical alignment successively, the top plate and cross Aplate having means for securing the unit assem 'bly to the frameiof the machine. 2. In a machine of the class described-having 'a -supporting frame, ~a removable unit assembly comprising atop plate, a cross-plate below the top plate, parallel front guides connecting the top plate and `cross-plate, fixed front fiap guides perpendicular to the front guides and secured ad- ' means for adjusting the inclination?of vthe'bac'k - vclosing plates. . - 6. In a machine for forming a carton 'from' 籥 blank `having flaps with ?i slits and flaps with tongues adapted to be Iinserted Ain `the slits, the combination` of av table having> an Aopening there in and adapted to receive a` carton blank, Ia carton former� adapted to force the blank downward through said opening, means for folding the sides and fiaps on the `-blank as the former descends, and stationary means inthe path of the descend-`- ing blank becoming automatically operative by the >descent of the blank to open the lslits and insert the tongues therein. ' ' 7. In a machine for forming cartons from blanks having flaps with slits therein and flaps jacent thereto, fixed guide fingers secured ad with locking tongues thereon, the combination of jacent the outer edges of the front guides below a frame having a horizontal table with an open the front flap guides, yieldable tongue pressers ing therethrough, means for positioning a carton fixed to the front guides below the guide fingers, blank on the table over the opening, a carton a rock shaft supported on the top plate adjacent 60 forming head, means for moving the forming its front edge and above the front guides, a head downward through the opening to carry folding plate secured to vsaid shaft and normally the carton blank with it, vertical guides extend lying within a recess in the top of said top plate, ing downward from the table adjacent-the front and a feed table secured to said top plate, all of edge of the opening, means for folding up the said parts comprising a removable unitary struc 馻ps having slits as the forming head forces ture, the top plate and cross-plate having means the blank through the opening, the forming head for securing the unit assembly to the frame of having recesses over which the slits are folded, the machine. breaker fingers secured to the vertical guides in 3. In a machine of the class described having a supporting frame, a removable unit assembly 70 the path of the downwardly moving slits and adapted to press into the recesses, fixed means comprising a top plate, a cross-plate below the in the path of the descending carton blank adapt top plate, parallel front guides connecting the ed to fold the flaps having tongues so that the top plate and cross-plate, fixed front 馻p guides forward edges of the tongues lie adjacent the perpendicular to the front guides .and secured adjacent thereto, yieldable breaker fingers fixed Slits, fixed tongue pressers secured to said guides �412,369 11 -below?the breakersV and ini the Vpath ofi-縮aid -ing, vertical _guides depending from 縯heA table; ad� tongues, lslits and recesses, whereby the pressers will open therslits and press the entrant edge, of vjacent the front and >rear sides of 縯he opening, means adjacent theV rear guides `>for 籪olding'the the tongues into the-plane of the slitf openings, land?means for pressing vthe tongues into the slits. 33.'- In a ?machine for forming cartons from blanks having flaps with slits therein and flaps `witl?rlocking tongues thereon, the combination of Va frame having a horizontal-table with an open tongues Vforward toward the f slits, stationary pressers adjacent the frontguides >for opening the slits and pressing the tongues into-the plane of the opened slits, and stationary meansfad-ja cent the rear guides for-pressing- thetongues for ward and into the opened slits, said stationary -ing -therethrougmmeans for positioning a carton pressers andsaid stationary vmeans operating to .blank- on the table over the opening, a carton perform their functions as theAcarton-?blanlfzv~ is ' forming head, means for moving the forming moved downward past them. ` >head downward through the opening to carry `>the carton blank with it, vertical guides extend ing downward� from-the table 'adjacent the front edge'of the opening, means forfolding up the vflaps having- slits as the forming head forces the .'blankthrough the'opening, the forming head hav ing recesses 'over which the slits are folded, iixed means in the path ofthe descending cartonblank 20 adapted to fold the flaps having tongues so that the forward edges of the tongues lie adjacent the slits, vfixed tongue pressers secured to said guides 'below' the breakers and in theV path> of籚 said tongues, slits and recesses, whereby the pressers andV fixed means onthe rear guides for pressing the vtongues forward and into the opened slits. Y10.'1In 'a machine for forming cartons from blanks Vhaving flaps with slits therein and flaps with tongues adapted to interlock in the slits, the top plate and supported wholly thereby, V>dQwn.- l the 30 ofthe bottom of the carton to be formed, means fixed pressers for opening the> slits and pressing therefrom, a pair of downwardly and oppositely disposed guides fixed at their upper ends to the machine. , , f ' ` ` ' Y f blank having bottom; front, rearand en_d panels formed thereon and end 馻pswith slits therein l.for positioning a carton -blank on the table with ? its bottom Vpanel over the opening, means for the tonguesinto the plane Vof the opened slits, plate and extendingY forwardly andfinwardly l 1_2. In a machine for forming a carton froma _opening therethrough of approximately the size _guides >having means for?folding the tongues for- ' frame, a removable unit> assembly Vcomprisinga rear top plate', spaced carton blankjguideson said top plate, bottom riiap folders secured ,toA ,theftop whollythereby, Vthe rear top plate having means v ' th'e縞ombination of a horizontal table having an V.ward adjacent the slits, the front guides having A for securingvthe unit assembly to the frameof and means for pressing the tongues into the slits. 9. In a machine for formingVK cartons from l >the front and rear sides of the opening, the rear _ disposed between the` guides and secured one; to each guide adjacent its lower end and supported the tongues into the plane vof the Vslit openings, vforcing the blank downward through the opening, vertical guides depending?from the table adjacent t 4wardly and forwardly-inclinedback closing plates willODen theslits and press the entrant edge of ' blanks having馻ps with slits therein and iiaps with*v tongues adapted toV interlock in the?slits, u 111. In a carton forming: machine 縣aving`-v a and end flaps with tongues adapted to interlock in the slits; the combination of> a frame, front and rear top plates secured to> said 縡rame Yand spaced apart a distance substantially equal'to'the lwidth of the bottom� panel of the carton blank, means for positioning a cartonblank on said plates with its bottom 籶anel over the space fbe- ` Y tween them, a carton forming head, means for moving the forming head downward between said plates to carry the cartonblank with it; means fixed to and -supported'by the `frontvtop plate (for .successively- turning upthe front panel and the slitted- endsilaps, andopening the slitsas 'the forming head carries the blank downward; means 駒ed to and supported by the rear top plate ' for successivelyturning up the end panels, then> jturning up-the rear Apanel :and endiiaps with .tongues andv pressing the tongues fully into the vslits as the forming head .carries theblankjdown.- . combination of a horizontal table having an open ward; said front and rearr top'platesV with their ing 縯herethrough of approximately the size of 50 respective supported means being Aremovably lse -the bottom'of the carton to be formed, means cured to said frame and being removableY there for :positioning a carton blank on the table with vfrom as distinct front and rear units. Y f� ? � i ~ its bottom panel over'theopening, means for forcing the blank downward through the open EIVJGENEv s. 玊ASCHERQ� .