US1275550A - Sheet-feeding mechanism. - Google Patents

Description

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Wnefsae my, L

W. C. GLASS.

SHEET FEEUING MECHANiSM. APPLICMHUN mm Novus, |914.

Patented Aug. 13, 1918.

Inve no r Zi/Liana C'. (Zia/.55. y

W. C. GLASS.4 SHEET FEEDING MECHAMSM. APPLRCATIDN flLED NOVYB i914.

Patented Aug. 13, 1918.

12 SHEETSw-SHE l0- 09m, 4 a o ma 5%@ W5 tom, mm l n L,\ wc f www www www. 2 Jmf/5,1/w/.w/M/M/ om www www 6%.@ n wm .v raw I f W, C. GLASS. SHEETFEEDlNG MECHANISM. APPLICAUQN man Npmz's, |914.

Patented Allg. i3, 1918.

l2 SHEETS--SHEET 12- s, 5 www@ xo Ne wf MV i 5 island, liavc Uni'rnn sTArns Pirrnnr onnicn.

WILLIAM C.. GLASS: GF W'ONSOCKET, RHODE ISLAND, ASSIGNOEL TO NTED PRINTING MACHINERY COMPANY, F BOSTON, MASSACHUSETTS, A CORPORATIGN OF MAINE.

."HELETvFEEDING MECHANISM.

Specification of gutters Patent.

Patcntc-d An i3, "i918,

Original application filed November 8, 19W, Serial No. 730,165. Divided and this snplicaticn filed November 23,1914.. serial No. 874,550.

To r/ZZ vulmm. it may; concern:

Be` it lniown that l., lliiiiiinir C. GLASS. a citizen of ti'ic 4United Staten, incl zi resident of VVoonsocln-st, ifjrovidcncc county, Rhode invented nn improvement in Slicctfiioorling .l\lcclninisnif, of which the ol lmring description.in connection with the accompany.' drawings, c, specification, like. .clnirncicrs on tino ri'awings rcproscnting like. parts.

This in'rcnticn to slicct ccrling meclmnisms, and moro cspccinlly, tlicugli not e-xclusivciy. to incclianisrns for feeding she-.cts of cardboard .into n 'prcss which creases and cuts the shoots to malts. box blanks. This is n division of my i v .ipplicution for sheet feeding mechanisms, tsorinl No. 730,165, filed November 8, 191.

My invention. will lic oost iin'fcrsoorl by rcfcrcnco to the. following spe iicntion, when taken. in connection Willi tl' icccinpanying illustration ci cnc onorific embodiment choro of, wllilc its ccopc will lic niorc particularly pointed ont in. tlic nppcnficd claims. l

.ln tlic drawings: Figure 'l is :i plan oi' n prmting press of connnon forni.. lnirvin n .cliectffceding moon :mism cnilscilyirnc any inw tion thc parts boinc; shown: in iiic position which they occupy wlicntlic prcss is Wiiln open Fig. 2 is u sido clci'ntion of the and the sliect-fcecling nicchnnisin. with the parts in tlie` snm@y positionns in l'fliq'. l;

Fiom is n dci-.ail plan section, partly broken away, on lineB-- of Fig. 2, illustrating a portion of thc genring or nicnns of which thc shcct-o'cding incchnnisn'i derives its` power from the crcnlvpin :it cnc slide. of tho press; o Fig. el. a. .sido elevation of the press, slioW- ing the" positions which the ports of tlic press nml shoot-feeding mechanism occupy when the press is closed;

Fig. 5 .is :i detail side elevation', nt :in cnlnrgecl scnlc, of n portion of the fced-tnblo 'and flic stop-nger mechanism;

Figr is,nn cnlurgcfl dota-il plain section on line 6-6 of Fifi. 5;

Fig` 7 is a. det-nil sectional View, partly in clin/ation, on linc 7 7 of Fin. 5;

Fig. S is n dctnil side clufntion, nt nn er liirgcd scnlc, of n portion of the sheet-feeding mechanism, illustrating particularly thc first set of grippcrs and their actuating mechanism Fig. 9 is zin clcvction viewed-:tronos the l opposite side of thc machine froid that soon in Fig. 85 illustrating tlic first sot of grippcrs;

Fig. l0 is n roar clorntion of one pair of the first sel: of grippcrs;

Fig. 1l nn elevation 'view-cil from thc right lin-nd sidc of Fig. l0;

Fig. l2 is n clcvotion olE the shcct-'fcceiing mechanism. particularly thc first nml. sccf.: pci-s in the relntivc 1;; citions nitric-li they occupy when thc first is about to clclivcr n sheet to the second.;

portion of illustrating Fig. 13 is n drtnil plan porti??v in section,

:tionni if onv line.

W on lino i scale. on line 15E-i8 of Fig; l, looking toward the left;

Fig.l9 is c flctail sectional View on an enlarged scale on lino 19M-19 of Fig( l.;

irgerl scale" Fig. 20 isn sectionnl 'View partly brokcn I' own-y on line 20---20 of Fig. l.; i Figs. 2l cnil .l2-2 nro diagramma-tic vic-,Ws illustrating the. VVhitW'orth `cinici". return motion used in connection with t'nc second set ofgrippcrs, illustrating the com in -tlim position which it occupieswlien thc grippers take. their maximum stroke Figs. 23 and 24 are similar diagrammatic' views, illustrating the Whitworth quick rc turn motion, the onm boing illustrated in! thc position which it occupies when the grippers take their minimum strokegf Fig. 25 is si diagrammatic View illustrating tlic- .lVhitWorth quick return motion,` in

connection with the. second and third sets of."

grippcrs, `the gijppers beingl shown in the relativo' positions which they occupy at the moment When the sheetfis transferred from the second to the third set. This view illustrates particularly the fact that the Variation in the stroke of the second set of grippers 5 takes place beyond the transfer point;

Fig. 26 is a detail plan on an enlarged scale, partly broken away, of the side regisu ter mechanlsrn;

Fig. 27 is a side elevation of the side reg1s- 1o ter mechanism illustrated in Fig. 26;

Fig. 28 is a detail sectional View on line 28u28 of Fig. 26;

Fig. 29 is a detail section on line Z9-29 of Fig. 27;

Fig. 30 is a detail section on linev .B0-38 of 26;

Fig. 31 is a detail plan section on line 31-- 31 of Fig. 27;

Fig. 32 is a detail side elevation of a por tion of the sheet-feeding mechanism illus trating particularly the mechanism oi' the third set of grippers;

Fig. 33 is a sectional vien' on line 35S-3S of Fig. 32;

Fig. 234 a detail plan of one pair of grippers of the third set;

Fig. 85 is a side elevation oi" the grippers shown in Fig. 3i;

.f Fig. 36 is a detail sectional View at an saenlargcd scaleY on line 36-3G of Fig. 1;

Fig. is a detail sectional view at an i venlarged scale on line 37--37 of Fig. 1; i.' Fig. 38 is a diagrammatic View illustrating the first'set of grippers about to take the sheet from the feed-table, and showing the second set of grippers holding a previously fed sheet between the platen and the be y Fig. [39 is a diagrammatic view illustrati 40. ing thef first set of grippers carrying the first sheet toward the transfer point, where the same its 'to be transferred to the second set of gripperis, this View also illust-rating the secondlseti of grippers in the act trans-v fem-ing to the third set of grippers the sheet which has just been Withdrawn from the press bythe second set of grippers;

i: Fig. 410 a diagrammatic View, illustratiing the lirst set of grippers transferring the 50 sheet to the second set o gripper-s, and

illustrating also the third set o grippers just dropping the' previously creased 'and out sheet 'upon the pile in the sheet-reccivmg rack', or elevator; and

Fig. Ill 1s a. perspective View of a portion of the first and second sets of grippers,l illuspressure of the fingers 21 upon the feedtrating how the shoulders of the first set pass beyond the shoulders of the second set. to bring the 'front edge of the sheet against the shoulders of `the second set. ln this View, the spring-pressed gripprs are ornitted for the sake of ciear'ness.

Referring to the drawings, and to the embodiment ofi my invention which I have there disclosed for 'illustrative purposes, l

' being connected to each other4 byra. bar 18,

Feedtable and 'stop-finger meohwmsw have there shown a pressof common form, to which the sheet-feeding mechanism Aof 'my invention. ,is applied, I Will lirst briey describe the press.

Press--(See Figs. 1, 2, 3 `and fi.)

A. frame 1 provides a bedj2, to which a chase 3 is secured. Journaled in suitable bearings in the frame is a main driving shaft 1, the usual {1y-Wheels being'omitted for the sake of clearness. Secured to the shaft are two pinions'5 and 6, meshing with gears 7 and 8, respectively, constituting crank-disks provided with crank-pins 9 and l0. These c.ranlr-pins are connected by draw-bars 11 and 12 to eccentric bushings 13 and 1:1, swiveled on a platenl shaft 15,4 mounted in a platen bridge 16, forminga part of a rocking platen. 17, said bushings by means of which the bushings may be turned in unison upon the. platen, shaft which passes eccentrically through the bushings. The bar 18 is provided with means of adjustment not shown) of common forni, by which the 'bushings may be setto vary the strength of the impression at will, or to throw off the impression entirely,-

(See Figs. 1, 2, 41, 5, 6 and 7.)

notched abutments 22, against which 1e front edge of the sheet maybe placed by le operator. Thesejfingers maybe secured to. a rock-shaft 23, mounted in suitable beitrings 24 on the frame of the feed-table.' The lingers may be elevated at appropriate times in the operation of the machine by suitable mechanism, herein driven by the press'gearA 7 Herein there is secured to the rock-shaft 23 an arm 25, having scoured the-reto a stu'd' 26, located in a slot 27 provided in one end of a link Q8, and urged toward the left (Figs. 5 and 6) in saidslot by a spring 29,. secured at one end to said armand at its other end to a pin 30,-ixed to the link. This spring provides for a yielding downward table extensions, While the arrangement is sucy :1 that the fingers may bepositively lifted to'allou' the sheet to pass beneath the abut\ 125 410 ,nnisnL and adapting it to the press so.,that

' of negeer "5 i is a casing'GO, swiyeledon the stud jonrnaled on a stud 37. tHerein the gear 3G is'driven by a pinion 38, seeured'to4 one end of a shaft 39, journaled' in a bearing bracket 40, and having seeuredto its other-end a gear 41, meshing with the press lgear 7. The gears `36 and 38 may be provided.4 with a casing' secured to the bracket 40 and the stud 37.

4- In order to facilitate setting upl the'mech- "'thefgear 41 wlll properly" meshV with the "press gear 7, the bearing bracket40 may be swiveled on the stud 37', and Vmay-@be pro-- vided yithfa' segmental slot 'to-.receive a, clamping screw`44. 'By this" means, the pinion 41 may be' adjus ted`- wit`h.rela the press ger-T asf'to'properly'mesh therewith regardless 4of, l.inalceuracies and 4.slight.differencesiii Dri/vinggecrgig or Vp 4(See]`i1' gs`1'1",'2 3 As a zonvenien means .f4 riving the gripper mecbae. reilifber.;ds ribed -the 'ving i' .Sile

ef-withf; relation.- to he dri I bi erably by meansfofajshearpimhdesigned to shearotf, and prevent injnryaothfmechanism, in the eyentoiany. eoident Wendland tb'swp the rotas e', be'el'edgear 45, and pinion hieh 4also forms a movem i Inelosing th 46, is4 a. gear casing 52, `W bearing 5 3 forone end Aofthe shaft 47. This casing may be swiveledon a' huh 54, formed on-the, ea.r 45, and ,may'be'held against ro- 4tation y suitable-meansyhereina-jew 55, embracing the linfk :11, 'the g'singbe'ing held in place by suitable means, hereinstud. Inlosing the beveled ge'ar 49 and pinion 48, is 'a easing 57, which also forms a bearing 58 for the other end of the shaft. 47, as well as a support for -a xedstudo r. shaft 45S)4 .for the gears 49 and 50. Inclosing the gear 50 59,' and held in place. therebn hy suitable means, herein a washer ,61 secured to said stud.'

Tlie easing GO'may-also constitute a snp` port for -a gear 62, journaled on 1a stud 63 and meshingin turn with a gear 64, journaled on a stud 65. The 'easing 60 may also constitutes, housing for'the gears 62 and 64. Thegear 64 meshes with a gear 6G, jonrnaled on a stud 67 secured to a. side frame member 68.. This side fra-me member and a, similar side frame member 69, both secured to the sides of the platen 17, are rigidly connected to each other` by suitable 'sembling of the parts, inasnmelras it ad- M andfo'rth in a partial revolution' about the H wjhieh ent speed 'oflrotatio'n of the gear 62 will be diwill presently be described.

Referring nonr to thegears G4 and GG, 70 these gears are held in -niesh' with each other` by a linkf 72, piw'oted at its loweryend to the stud and at. its upper end to the stud ,67. Incidentally, this link facilitates '.the asmits of the location ofA the gear (54*heiiig slightly varied to compensate for variations 1n the. placing of the other parts. 4-Coniaringthe position of the parts shown in ig.\ 2 .with the position shown in'HFig. ,580

tion. to xitmust heferident that as the press opens and-closesQthefeasing 6() will oscillate'about the axis' of'the' stud 59,' and gear 50, and

onsequently the 'gear G2 will swing back gear 150;. LNOW, assuming that. the press gear 7 is drive'r'r'u the direction indicated by the ari-ow on,Y (Figs. 2 and 4), the gesso() Will in the direction oiltheuarrow thereongFigs. 2- and 4). It Will-1now be erident that when the gear 62is swnngnpardly ,'froi the position shown iii-,Fig 2 the position shown in Fig-4, yit'. is being lved in thesame direetion Vas thedireclori; .of ,.rotetioxil Vof I the gear.'- 50. ,-,On the other 11and,)vhen the press is open, thegear be s iimgfrom the"position.shown infFigf '1 4 to the position shown" in` Fig. 2, and'fthedirection in 'whieli itisthus re volvedjs contrary to the direction .of rotation" of the gear 50.' As a consequence, the

minished during the closingmovement of the pressanti accelerated during the 'opening movement. Since the gear 6G is driven through the 'gear 64 by the gear 62, it. must be evident that. this rotative movement. of the geart will be nnevem-that is to, say, during a )ortion of its. rotation, its movement will" e slow, and during the remainder of a.V given rotation, its movement will he relativelyl rapid.- v`4v l ln the cycle of the press. opening, movement takes place in approximately one-half the rotation1 of -the gear 7, and the closing movement also takes place in the remaining half of the rotative' movement, while it is fouiid `that theA gear G6 rotates approxi mately two-thirds of a rotation during the opening novement of thev press, and onethird of the rotation on the closing movement., due to the described swinging' movement oi.` the pinion G2- with relation to the gear 50. This irregular rotative movement may be translated into a uniform reciproeatery movement, or a. reeiproeatory more4 ment haring any desired dwells, retardat-ions or aeeelerations. by the use of a. Variation of the weli-lmonn Whitworth quick return motion, which will he hereinafter 130 described in connection with the second `gripper mechanism.

l\lfounted in suitable bearings iii the side frame members; 68 and 69, is a rock-shaft 7 3 carrying sheet grippers, which it will b e convenient. to refer to as the first set of grippers, since. the)7 act. .upon the sheet first. b v taking the same. from the feed-table and delivering it to a .second set of grippers. Loosely mounted' on the rock-shaft 73, but held against. swinging movement thereon, is a lever; or a plurality of levers, 74 (herein two levers), which carry the grippers. Since these two levers 'and the partscarried thereby are'exactl).v Similar, a detailed de.- scription ot' one will sutlice. for both. Each `at their ent-rance, so as to guide the entering 65 90 has secured thereto an arm 9G, to which 70 is pivoted a. rod 97 encircled by a spring 9S. bearing at one end against. a fixed collar 99 `on the rod, and at its other end againsta pivoted block 100. through ivhiclriid rod is arranged to slide.

limit the. motion of the latter, under the influence. of the spring 9o. The arm 9G is fixed upon the rock-shaft 90 in such a position that iu one position ot the' arm (sce 8,0

full line. position` Fig. 9). the arm is nearl)v in line with the rod 97, and consequently the spring 98 exerts its minimum force upon the A nut 101 and` clieck--7-5 'nut 102, threaded onto the rod 97, Serve to springs SG to cause the latter to urge ith'`\` lever 74 is preterabl)v forked, and provided grippers 79 toward thc grippers 76, the con- 85 with two arms 7 5 75 havirier formed thereonfor secured thereto, 4tilted grippers 7G-7G, having sheet-gripping surfaces rv- Fs il--H and shoulders iti-7,8, `which may serve, as abutinents for the front edge ofthe sheet. Supported upon thearms are two movable grippers 79-79, herein pivoted at 80 to a forked yoke 81, the latter being se- -cured to a rod 82 mounted to slide in a sleeve '83., This sleeve is provided with a. longitudinal slot 84, in which a. pin 85, secured to the rod S2, plays. Euch-cling the rod 82 is a spring SG, interposed between the yoke 81 and the sleeve 3?, and tending to niove them apart, or in other words, tending to urge the grippers 79 towail the grippers 76. The sleeve 83 is forme-dto receive one arm of alevcr 87, to which it is pivtedA at 88. This le'ver is interposed between a pair ot' arms S9 on the lever 74, and is secured to a lock-shaft by a key 91, located in a key-way, or spline, 92. The rock-shaft 90 is mounted in suitable bearings in 'the arms S9 of fthe lever 74, and is also journaled in bearings provided in one or more arms 93 secured to the rock-shaft 7 3. Therefore, the levers 74 may be adjusted longitudiiially of the rock- shafts 90 and 73, and yet receive their rocking motion from the shaft. 73 without being actually secured thereto. The lever 74 and the lever 87 may be held against longitudinal sliding movement. by providing the lever 87 with :i split ear 87 and a clamping screw 87, by meansV of which the lever 87 may be clamped to the rock-shaft 90. The yoke 81, carrying the grippers 79, may be held against lateral displacement by a link 94, pivoted. at one end to the yoke 81, and at its other end to the lever 75. The movable gripper 79 is provided with a sheet-engaging surface 95, which cooperates with the sheet-engaging surface 77 of the fixed gripper 7th-and said sheet-engaging surfaces preferably diverge sequence beingr that at that time` the. springs 86 furnish a very light. pressure upon the sheet. lVhen, however, the lever 7.3 is swung from the full line. position (Fig. 9) to the dotted line position. the. arm 96 is disposed 90 at a substantial aiig`le'(see dotted line position` Fig. 9) t0 the rod 97, the result being 'that the. spring 98 will serve to appl)v additional pressurc to the grippersh v causing the pins 85 ttnseiior bottoni. in the ends 95 of the. slots 84,' the b v -causing the pressure of the spring 98 to acti through positive con- Iieotions upon the grippeis, without intervention of the spriii gs 8G. this occurring during the cair \'iiig movement of the grippers, 100

Since the pivot connect-ing the arm 96 to the rod 97 is placed eccentric-alli7 with relation to the axis of the rock-shaft 73;; about.

which it swings, said'pivot vin swinging downward, will approach the abutment 100'` 105 and consequently cause .the spring 98 to be placed under greater tensionduring thc carrying movement of the grippers Sometimes in operating: on verv thin cardboard.

it is found desirable to utilize only the pressure ot the springs S6, during the transferring of the sheet.. Under such circumstances, ,the-nut 101 and check-nut 102 may be adjusted to limit the motion of the rod 97.

under the influence olthe spring 98, so that. 11.5

herein, there is secured to the rock-sh. ft an arm 103, connected by a link 104 to`a. :am lever 105, fulcrumed on a. stud 106. fi'kd to the side'ranie member 68, and said cauce lly equal pres- 12o Leverano f3 lever having jonrnnled thereo.\ u ouin roll motion. To this end., there is jouri'ialed in 107, actuated by a suitable ouin 108, the lntthe slides n. she-tt 121, having: secured thereter boing herein formed in one lnee of the to a pair of pinions '122. and 123, meshing gear GG. p with racks 124 and 125, secured to the side 5 By the deserilif-id meclnnnsni, when the frame members 68 und (if), respectively. 70

press cl the grippers 76 :ind 79 :1re Mounted. Jn. the slides 1,13 und 114, 1s fi "'4 ca'i'iseil 1V rwing forward into position to r0cksheft 126, which is rfiipnble ci longircceire the sheet from the feediuble in e tudinel sliding movement 'for e purpose rrninner which will be more fully described which will be explained in connection with hereinafter, and et the proper moment, the the side register mechnnisn'i hereinafter de- 75 gi'ii'xpors nre positively opened by the enscribed. Mounted upon the roclesh-iiift 126 gngz'cinenl. olf n emu-roll 109 jonrnaled on an and upon the .fixed rod '116, is n )iurulity of erin 10.9 secured tothe rock-shaft 90, with gripper supports 127 (herein two Each of n com 110 formed on or secured to the cam these gripper supports is capable of sliding lever 32 hereinbefore described (sce Figs. i 0n the fixed rod 116,'but is compelled to 80 v sind 5). This cern is so shaped und. placed move .longitudinally with the sliding rockl thiit. the pgriliipere will open to receive the Sheft 1,26, by being forked to provide a pair tSheetfrom beneath the fingers 21, and when of .arms 128, between which is located an :the press starts to open, the eain lever-32V arm 129 secured to the rock-shaft 126. The

*will lift -zhe anni 11.()1 thus releasing the roll gripper suppdrts 127 are capable oi edjnst- Se T09, und allowing the grippers instantlyto menty longitudinally o@ the roelrshet 126, l close under the eombinedpressure of th the latter for that purpose heilig provided springe Se and 98. with a s pline, and the erin 129 being proi The` grippers now lia-ving: received .the 4vlded with a key 130, and a split ear 131,

sh'eei ll ne swung into the proper position havin a` Clamping screw 132. 90'

F'r the saine to the second set of grip Elie of the gripper supports, with. the

ers.i ywhich will presently be described, and mechanism mounted thereon, is exactly simint thein'onient of delivery, the grippers will lar to the other, and e detailed description iie 'ia1-'tiall v vrelieved of the pressure ofthe .of'one will suice for both. Mounted on each ssprlng, 9S, so that the second set .ofgripgrlpper support 127 is a. gripper 133, which 9-.3

' 'per's `i'i'iii-y drew the sheet from' the frst'gs'etfv 1s fixed inthe opertion of the machine, but

Si ,egii'i 1'st merely a. 'slight resistance 'ogeredfcpnbleofdengthwise adjustment, it being y the springQS rioting through the springs ',"provided for 'this purpose with ny dove-tailed '-86 pressing the grippers upon the sheet.'` By cove 134, whichreceives n. correspondingly .l n inspection of Fig. 10, it will be l'seen that ovetailejd g'uide 135 on-the gripper support 100' thetwo-pairs of gripperson. each lever 75 i127. @As a means for adjusting the gripper so'pleced as to receive between them the longitudinally, it may he provided with :L

grippeis ofthe second setof grippers, which transverse Vslot 136, having therein the head `""willnow he described. of an eccentric'I stud 137," provided with e shank 188 Swiveled in the, gripper support 105 .t ,04 ndusive) 12.7. Theeceentrie stud may be provided @ffl i" 0 7 with e. slot 139, to receive a ,screw-driver Mount-eil in guidewnys 111 in the side by means of which it may be eonveniently from@ ineinher 68, and in guideweys 112 in rotated to advance` or ret-rant the ripper.

the side traine ineinher G9. are two slides 113 By advancing one or the other of tie grip- 110 and 114., rigidly connected' to each other by pers 133, the sheets may be squared very :f1-l rods 115 'mid 11.6. Preferably, theslide 113 readily. The gripper muy be secured in the is"v rovided with shoulders 117 arranged in desired position of adjustment by e clampsli ing4 content with finished face 118 of ,ing screw 14:0 passing through elongitudinel 5D the side frenio'nieinber 68,1to hold the Slide slot 141 p'rovided in the grippensaid screw 115 fiffganst lateral movement in one direction,I being threaded into the gripper support 127.

5.1.?! while the yslideis provided with e. groove 119, The gripper 133 is provided :it its forward which receives e. hey 12() secured to the frame end )Vith hdernlly-extending sheet-gripping "*fmember 68, to hold the slide against lateral .surfaces 142, prefernbli-f having :i slight '15I Aincrement in :in opposite direction. At the downward incline ton-iard their extremities 120 'other side of the machine, the slide 114 is tofncilitate the entrance of the edge of the ili'i" "pre'liernl'fly 'without lateral tqjnides, so that sheet.

tlio'side freine is to come and go solne- C oilwrnting with these fixed grippingr sin "what, without nlleeting the posit-'ion of the faces nre two-movable ,strippers lil-3, having slides 11C-i :ind 11.4.. sheet-mignonne sxirfnees 144, proferablv hav 125 Since these slide# are very short ns eoining u. downw-'nrd inoline rorreepoijlding `to r-:i'i j: paired with the widtl'i of the machine, it is the surfaces 142. These movable. grippers j desirable lo provide some ineens for insinfnre preferublj.r mounted on irpivot 145 on f "ingr their mov-ement 1n unison, so that the the gripper snppmi 1'5"?, :and seid flippers fte slee-et will ne held square during its rorwnrd are connected izo each other by n. pian 146. .A

'pivoted at 151 t0 a collar 152'interposed be- I tween said arms. The collar 152 is secured to a rod 153, 'arranged to slide through@ sle'eve 154 ivoted at 155 to the arm 129, the

flatter for t Aiat purpose being forked to stradl dle the sleeve 154. A' spring 156, encircling the rod 153, bears at one" end against the.

.sleeve 154, and at its other end against a nut 157, `threaded on the rod and' serving as a means ofadjustment for the spring. A lock-nut 158 may be providedto secure the nut 157 in the desired position of adjust' ment.

As a means for rocking the shaft 126 to actuate the movable grippers 143, said rockshaft has secured thereto an arm 159, having journaled thereon a cam-roll 16010- cated in the cam path of a stationary cam y161'secured to the side frame member 69. lBy giving the cam path the propershape, it may be caused to utilize. the forward and backward movement of the slides '113 and .114, and the described mechanism carried thereby "to open and close the grippers. To

this end, the cani is provided with tivo straight portions 162 and 163, and two depressed portions 164 and 165, the latter beingrshallower than the former. When the slides 113 and 114 and the mechanism carried thereinY are. in their retracted position shown in Figs. 16 and 20, the grippers' are open. iYhen, however, the slides and mechanis-in carried therebyst-art. to advance, the can'rroll 164 rises into the straight elevated portion 162 of the cani patlnthus acting through the arm 159, rock-shaft 126, arm 12S), and sleeve. 1514 to place the spring 156 under tension, and apply the-spring pressure. to close the grippers 143 upon the sheet, thus gripping the latter firmly against the grippers 143. This` occurs at an "appropria te time in the operation of the machine, as will be described hereinafter. The depth ol the depression 165 is only suicient to cause the. spring pressure o f the grippers upon the sheet to diminish at that point,

without being entirely removed, and hence there is no danger of the grippers dropping the sheet. during their forward movement.

In some cases, when' box blanks are being cut, it is desirable to have the cut extend clear to the front edge ofthe sheet, and since the sheet is to be held in the press by the second set of grippers during the cutting and creasing. operation, it 1s necessary to provide the gripper 133 with a notch 166, to permit thel sheet to be eut clear up to its frontedge without interference with the gripper.

- with a laterali 114, and the second set of'grippers carried thereby, are given their= forward and backward movements. The slide 113 is provided I projecting stud 167, connected by a lin 168 to one arm of a belln crank' lever 169, fulcrumed at 170 upon a lever A171, the-latter being ulcrumed on the stud v106, hereinbefore described. The othe arm of the bell-crank ,lever 169 has j 11a-led thereon a cam-roll 172,' located `'1n a.

cam path provided in a cam 173,'w'hich is fixed in the operation of the machine, but is adjustable-about the axis of the stud 106, as will presently be described.

v The lever 171 is rovided with a Slot 174, in which is loca-ted, a crank-pin, or roller, 175, carried by the gear 66 hereinbefore described. This mechanism constitutes what is familiarly known as the' Whitworth i quick return motion, with this diierence,

that the present device is a reversal of the.

lVhitworth quick return motion. In other words, instead of converting a uniform rotary motion into a reciprocatory motion having a slow motion Ain one direction-and a quick return, it converts, or more correctly speaking, is capable of converting the nonuniform rotation of the gear 66 into a uniform, reciprocatory motion. This would be the case if the slot 174 in the quick returnV lever 171 were made strai ht, but asV it is desirable to give the secon set of grippers 4a motion that will be more rapid at some points than at others, and which will have suitable dwells, the slot 174 is given an irregular outline. This irregular shape of the slot and the results accomplished thereby, will be referred to more particularly` hereinafter. The cam path of the cam 173 is formed 1n part on an arc of a c1rcle struck from 'the axis on which the lever 171 rocks, while the remainder -of the cam path takes a drop toward thehfulcrum of the lever., 'It will be convenient'tov refer tothe first part of the ca m path as the concentric part, and the remaining part as the dip, or drop. The

extentof the concentric portion of the 'ca m path .is such that when the cam is placed 1n the position shown 1n Figs. 12, 21 and 22, the cam-roll 172 will remain in the concen* ltric part of the cam fpath during the entire stroke of the lever 171, and consequently the motion iliich is imparted to the second set of gi'ippers will be unin'flucnced by the cam 173., This is the extreme travel given to the. second set of 4grippers,`and consequently at this time, these grippe-rs will more to their maximum dist-ance beyond the front. edge .of the pla-ten. This length of stroke is used for the 'smallest slze of sheet, since it is desirable that the of the righbhuud @mi mi iii@ @um paih, sind 'w'the cmu pat-h.. As si rsiilt, the stmk@ of the and zit Some point in the: dip m.' imp in.

Second sisi; of grippur wi'l. he silent/climi, the amount depending upm th@ position. at

which thu cam 1.73 is :ihieq miiusiin 180, providgd i411 ii? v`siied posit-ion m'. :with

shaft 17 gxteiids through i isegiiiniiai :310i

cum 1.75% {mi} pifevel- :Lhly through iin in vx 1,81 cci-( uiting wiih xSeries of siiitiihi@ .a .hiaioiis 'iBS-2 mi ih@ 4mim 173. These giafhizimiia iid indiv; may serve to assisi', the, @pm-uhu' iii stroke of tha second ,sg-i1 The shaft 17"?) imm i vided with Giannini lnoi'. only i1@ iiimigr' cia .as-a means for i-ying' me Mini `h wicket 177?, the hmm; v fixed to the 51de frame 38, the i heilig tha-tihese parts pifoifide :is ie 'www asort of rigid, hoxliim siriiiiiim for tha `median]isili suppmiii thesiihy (agee Fig. i. Qecured to the shaft 1?8, ii wurm maar i254. lashing with a 'wurm 185i, the luizen: hung;

*formed on, 01' iii'tzihij: muri'efi im, n., woran Byloosening the clmnping mit :moi rotating the Worm hafi 186 iii the propel' pm'periy ai@ 35 justing 'the cum foi the? hifi-wml, h'gi ai;

dimctoli, the muh 173 may he m'ljusted to the desired position, :ind secured 'in the sir,.- icted pmsitiori of adju'sunent, hy Ligi'itening up the eiamping nul; 183;

Referring now i0 iigs. Q1 and 22, wherein the can. 173 is shown in such :i positimi of wijustmunt that the shaft 178 is located ai thi, extreme righthand and of the 510i, '1.80n this adjustment of tha uam is Such that with aaah ri'ymimi of the gaat 6G carrying this crzmivpin, m' mii 1'? 5, the second son; of grippers Wiii. he Caused t0 travel its full stroke, einer: the cam-'m11 172 does not leave the c011- Celitri portion ofi-he cam path in the cam 175K Referriiig mmv 'EQ Figs. :'23 :ind 24, iifhmfein the ji' is shown iii such aA giisiizioii h., sicijusiman that the shaft 178 of. upies a pfissitiim ai. the extrano lehhnnd mid of lhe i i t 130s-In this pbsitioli of mi jilsiii'ini; ifiiie Camix the, Caiibrci 172 hef gin@ .ii-s stmk@ ifi i jaa'aixiilshown iii Fig. 533, alici @mis its sim) i@ :it ih@ point Shown in Fig i241. Naw it limsi he. evident that, ai.- izhoii ji' the. iiuicvi n the, haii-crank lever 14243 iiiwiiys tra-veis; to and fr@ zi. :ixed distiiiiaze the i'ishmce through which the, second Set oi gripprs Wiii @nivel will he, fiependeni: upon h@ Qontrol iifiic-.h-th@ @zum 173 @KeirN cise upon the cainwo'i 172. Thai'l is to say,

:stmis'odesud into the drop, 0i. dip.,l the. iban-@rank .iai'ei' 16S? will imminence il@ roch :hfiiit iis; fishfmiii'i in a simskwiisei ima-kiwi viii-h rfi-speri" is imm. 'L hy which It i@ Gaufrier.

y iii, :iffziia- ,imi Shown in Fig'. 214, w iwf www in i" .1 man ih@ i iii: i612 a'iiiifheiii'fu ai Eek u ig *im siti-wiske, of the. @mond l.C sai; mf grippei's. at@ 'a @machete Xa-1'iip1e,---\vith the @am E73 placed in the imsition shown in, Figs.

:21 and th@- second of ffriijpers "iIiiW- f3.1

hav@ n smoke of mfalw inchesI anni; Willi iiriifai 11's nmziumim. distancia 1m30 the press;

shown in Figs. and 24, ih@J stroke of the the, fili but with he @am placed in rhsl ppsition.

,Qrip'prs muy he 1re-dimmi to 011i y nine inchs; y r :mii the gilppeis Wlil trzwei mbo the press their mmmmmdistance. Bj" propmfly ad- J i jiisiniiig lthe cam, any desired 'variation in Stroke 4hetiifeeii thse n'm-y'he nhtmned.

Raimi-ting nQii.' to the slot 171k in the-lever l i a shape :is be remise 'the' itiiiust he evident;

I PIBSS.

It will be readily -ixed to the -rods- 115'and 116, gripper mechanism advances downwardly to .carry -th will be gripper-s start in the s" ring. will.. ass1st the driving mechathe par-ts to their initial. position.- -Sde 'register 'mechmnls'fni- See Figs. 2

and to that end, the slot 171 189, which. in the in their motion, is formed with a. portion position of the lever 171'shown in Fig. is concentric or coincident with the path of the crank-pin or roll 175. The extent ot this concentric portion 189 of the slot in the lever is, of course, determined by the length of the dwell required.

lVhen the sheet has been out and creased. and the press opens, it is desirable lha't lln second sct ot grippers shall carry thc .shoot as rapidly as possible out of the press, trans for the sheet to the third set of grippers, andv then recede to its initial position .\\hcrc it is to receive a new sheet` from the first set of grippers. T o this end, the slot 17aL is provided with an abrupt Iturn 190, which will produce the desired movement (sec Fig. and when the second set of grippers has 4reached the end of its stroke, thc new sheet is transferred thereto from the first set of grippers. The sheet now, having been transferred from the first set of grippers to `thesecond set, is carried forward into the apparent that when the press is closing-and the slides 113 and 114, together with the second set of grippers and all the other `mechanism carried by said slides, are advancing downwardly to carry `the sheet into quire; considerable momentum, and there-v the press, these parts will acore, in order to counterbalance the weight Vof these parts and take up .any back-lash which might result in an inaccurate positioning of the sheet, I provide suitable'means, herein a torsional spring 191, encircling the shaft 121, said spring Ahaving one end fixed to a c ollai` 192 secured to said shaft, and its other end fixed: to `an abutment 193, through which. the shaft passes, this abutment being en the sheet into the press, the spring 191 ound and' placed under such tension that it will-takenp allot the backlash of the parts, and moreover, when the to rise, thepower stored up 'lift the grippr'fneehanism; In

that the power nisni to fact,v it is found 31, inclusive.)

a side register' mechanism, which When-thc second set of grippe'rs has received the sheet, will cause the sheet and grippers to be shifted .If desired, there may be provided "bodily, so as to 'accurately register sidewise.

To that end, thev rock-shaft. 126, which car- .v riesthe supports of the second'set of grippers,.may be mounted to move longitudithus stored up is practically sufficient in'itself to return nallv. moans actuan-l by cont-act with the edge of the shunt 1n lvterniine the/extent of such niorenwnt. Heroin, loi'xgitudinal -motion is imparted lo the shaft 126 by a cam-roll 191, journalnd ther-wn and engaging a' fixed rain 1.95, which is heroin for convenience oi'l'nan-- n'l'rnff'urc formed on the cani 161, secured to Ihn sida frann1non|ber G9. is urged loward its cani by a. spring 196 (see Fig. 1`), bearing at one end against the fixed abutment. lai-, v a collar 19T, scoured to said shaft'. It will now be evident that if the spring 196 were to hold the cani-roll 194 continuously in con tact with the cani 195, as the second sei ot grippers is moved forward and back, it would be shifted lah-wally a distance equal to the throw o1 the cam.'

I 'will now describe the means by which the lateral motion o'f the sheet and the second set of grippers is stopped` when the side edge of the sheet has reached a predetermined 'point Formed on the sliding rockshaft 126, is a rack 198, which (see Fig. 27) is given a circular formation because oft'. the roching motion of said shaft. This rack meshes with a pinion 199, secured to a. sleeve 200, the latter having fixed 'thereto a. ratchet 201. The sleeve 200 is journaled on a stud 202, fixed to a support 203. This support is mounted upon the fixed' rods 115 and 116, in such a manner as to be capable of longi tndinal adjustment thereon, and is held fixed in the desired position of adjustment by suitable means, herein a clamping stud 204 and nut 205, said stud having a lateral recess 206, which receives the rod 116.

Coperating with the ratchet 201 is a pawl 207, pivoted on a stud 208 andr urgedtoward said ratchet by a spring 209, Carried. by the pawl 207V is a dog 210. having a tooth 211 .coperating with a rack-bar 212 provided with one or more teeth 213, each of which isprovided at its forward sidc'with an abruptshoulder 214, and at its rearward side with an inclined surface 215, for a purpose which will presently appear. The rackbar 212is mounted to slide in a suitable its movement in a slot-218 A spring- 219,

guide 216, and is limited in .by-.1a. fixed pin 217, located provided in said rack-bar.

its other end to a pin 221 carried by, the rack-bar 212, tendsto hold the rack-bar in the position shown in Fig. 26.' Theraek-bar 212 is connected to 22,3 upon a supporting piate 224. The trigger 222 is connected' to the rack-bar 212 pref'- erably by being provided with a tooth 225I located in the'slot 226 provided in-said rackloar. The trigger 222 is provided with a suitable sheet edge engaging surface 227, adapted .to be engaged by one side 'This cam-roll and at its other end against a trigger v222 pivoted at and there may be provided suitable secured at one end to a fixed pin 220andat

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