US1571987A - Machine for operating upon stock - Google Patents

Description

Feb. 9 1926. v EE. wlNKLEY l MACHINE FOR OPERATING UPON sTodxf I Ine-45 Y I m I Feb. 9,1926. 1,571,987

E. E. WINKLEY lMACHINE FOR OPERATING UPON STOCK Original Filed SePt l5, 1920 1.3y Sheets-Sheet 9 @7. C5, l 564 il:

Feb. 9 ,I 192.6.

' 4 E. E. WINKLEY MACHINE FOR OPERATING UPON STOCK 13 Sheets-Sheet 5 Invve v u Z7 Original Filed Sepb, 1920 Feb. 9,1926. 1,571,987

E. E. WINKLEIY MACHINE FOR OPERATING UPON STOCK Oxfgal Filed Sepl5. 1920 l5 Sheets-Sheet 4 l l l c l I Feb. 9 1926. 1,571,987

E. E. WINKLEY MACHINE FOROPRATING UPON STOCK Original Filed Sept. 15, 1920 15 Sheets-Sheet 5 Feb. 9 1926.

' 1,571,987 E. E. wxNKLl-:Y l

MACHINE FOR OPERATING UPON STOCK original Filed Sept- 15, 1920 15 sheets-sheet s A A ma o -@339D /v J 0 (me .Il i A Q Feb.. 9 1926.

` 1,571,987 E. E. WINKLEY MACHINE FOR OPERATING UPON STOCK l original Filed Sept. 15, 1920 15 Sheets-Sheet 7 Feb. 9, 1926. 1,571,987

` f E.' EL WINKLEY MACHINE FOR OPERATING UPON STOCK o t. 15, 1920 15 Shee' Iman/07;

Feb. 9 1926. 1,571,987 E. E. WINKLEY MACHINE FOR QPERATING UPON STOCK Original Filed Sept. 15, 1920 l5 Sheets-Sheet 9 gl ul f Feb. 9, 192s.

E. E. WINKLEY MACHINE FOR OPERATING UPON STOCK (D Hlllll Original Filed SQPC- l5, 1.920 13 Sheets-Sheet 10 ifi;

im@ W9 v E. E. WINKLEY .MACHINE FOR OPERATING UPON STOCK Feb. 9 1926.

Feb. 9,1926.

` E. E. WINKLEY MACHINE FOR OPERATING UPON STOCK originalFi-led` Sept. 15. 1920 15 sheets-sheet 12 Feb. 9 1926. 1,571,987

E. E. wlNKLEY MACHINE FOR OPERATING UPON STOCK Original Filed Sept. l5, 1920 13 meets-sheet 1s Patented Feb. 9,

UNITED STATES 1,571,987 PATENT orrlcr..

nnAs'rUs E. WINKLEY, or vLit-mv,,Mess.AC1-rusnrrrs, AssierNoR To UNITED suon MACHINERY oo-RroRATIoN, 0F PATERsoN, NEW JERSEY, A coRroRA'rIoN 0F MACHINE FOR OPERATING UPON STOCK.

,application lci SeptexnbcirlS, i920, Serial No. 410,443. ReneWediJune 23, 1925.

.To .all who/m, it may concer/n.:

Be it known that l, Enlisirus E. WINKLE'Y,

. a citizen of the United States, residing at Lynn', in the county of Essex and State of A" i/Iassachusett-s, have invented certain new and useful Improvements Machines. 'for Operating Upon Stock; and I do hereby` declare the fcllowino to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which 1t apport-eins to make and use the same.

This intention relates to machines for oocrating upon stoclnand more particular i' to stock-cutting or dinking machines suci as those emploifed for producing heel lifts; Machines for operating upon stock Aare frequently adapted to perform a series Vof successive operations upon a strip or sheetl of material the latter is intermittently fed to the operating instriunentalities of the machine. lln machines of this character, 'the first and last operations performed` upon' cach piece of stock are likely to result 1n the production of iniperfect work. ln stock-.cutting machines, for example, which operate toV out llilanks successively from a strip of stock an imperfect or incomplete hianl will be cut from the leading end of vthe stock if the stock is improperly positioned for the first cutting operation, and the, last cutting operation will also produce 'an imperfect blanlrunless the strip of stock was originally 'of such length that no waste end remains after the` last perfect or full sized blank has been cut therefrom. Acizorfxdingljf it is desirable to make special proen for preventing the production of imfeet work at both the forward and rear ends of the material .operated upon.

The object vof the present invention is to reorganize and improve machines of the alcove named general character for the pur-- pose of rendering them more eticient and reliable inpfoper-at-ion, and insuring that' the results of operations performed at the front and rear .ends of each piece of material operated lupon shall Ahe uniform with the re suits of operations performed throughout the length 'of the intermedia-te portion thereof.

lith Qth'is ol'iect in view, one feature of the ,invention contemplates the provision, in

el l'lililel;

spectiVely,

ne tor `op@ratiog -upou stock,

.that said first operationwill be properly performed.

To prevent the production of imperfect work at the rear end of each piece of stock, and to insure that the operating mechanisu'i shall he idle yWhile a succeeding piece oi stock is 'being fed into position for the performance of the first operation ther-r,- on, a further feature of the present invention comprises the provision, in a machine of the character specified, of improved means for determining the state of exhaustion of the stock and for automatically stopping the action of the operating instrumentali-ties when the piece of stock being operated on has become so far exhausted that there is not enough left to permit an'- lother operation to he properly performed thereon.

The invention further consists in the features of construction and combina-tions and arrangements of parts hereinafter described and subsequently defined in the appended claims, the advantages of which will be ap.- parent -to those skilled in the art. A

The various features of the invention will he readily understood from the following,r description and the accompanying .drawings invw'hich the invention is illustrated, in its preferred form, as emb `died in a heel lift cutting` or dinlrin-g nu chine.

ln the dra-wings, ligure 1 is a kplan view of the machine; Fig. 2 is a perspective view of a portion of the mechanism for loeatingthe stock for the first cutting operation and for starting the operation of the cutting-block; Fig. 3 is a view Vin side el-evation looking from the right in Fig. l, certain parts being broken away to disclose parts of the operating mechanism other- Wise obscured; Figs. 4 and 5 are plan views, on an `enlarged scale, of portions of the machine located at the right and-left sides, re-

o-f the central vertical plane eX- tending through the cutting instrumentalif ties; Fig. v6 is adetail tion, of 'the cooperating .Clie slitting-f view, in side 4elevaf Cri tlll

fit?

block showing` also the die-stripper and the dietliarge platt'oini; Fig. 7 is a Sectional View on the line T-`T of Fig. t3; Fig. 8 is z rien* in central vertical Section ot' the peitrl shown in Figi'. tt; Fie'. il is a rerti al Sectional i'ieiiv taken on a plane between the die and the cutting-block7 looking toiiard the 't'ront of the niachine; Fig. 10 is a perepef tiie View ot the various Caine and the drii'- ina' iiiechanisni as Seen troni the rear oi the machine: Fie. ll is a perspective View ebowino portiona et the stock feeding: iiiiiehanisio and the teeler mechanism tor detecting4 eriti cal exhauetion oi" the etoclt; Fig'. it is a View ol a portion ot a sheet of steelt illu:'- tration the operation o't the cuttii ej inetrunientzilitiess; Figi'. 12 is a i'iew. in le elevation. ot' a portion ol the machine looking.T :l'roin the let't in Fig. l and slioivingg` Airiarticularlj.' the cani shaft together ii'ith its eei'erfil cani-' i and parts actuated thereby; Fig 1.5i is ov iieii in vertical section taken on a plane extendinir through the cani eliatt, locking toward the rear oll the machine; Fie'. ll is a detail View. in vertical Section, ot' the plunger that carries; the cutting-block: Fig. lo is :i detail perspective View o'l" a portion ot' the actuating' mechanism `ler the ruttina-bloei;; Fig'. 1G is a rertial Sectional View taken on a plane betii'een the die and the cuttingv block, lookingr toward the rear ol the man chine: Figi'. 1T is a View. in side elevation and on an enlarged scale. ot' a portion oi' the iiiaebiiie ehoirn in Eig'. 3; Fia'. '18 a plan iieii` illustrating* particiilarl)Y the eliitcli toi' actuatinii the ani shalt. a port-ion ot the ineclianiz-iin ior controlling the operation ot the clutch and a portion ot the nieihanieoi `'or i'iieieniin. t;' the liutt'ingi ot stripe or pieces el' Stock; and Fig. l? :i plan i'ieii illuetratingr particolari),v the rarioiie came and the parte directlyv actuated therehi.

rthe present invention ie illustrated :ia enilxodiefl in a lii"`teuttiiri1` uiaehine which is adapted to 'leed sheet niziterial in :i ertifal plane to the euttini.;- inetrunientiilitier. "W

ine latter cinnpriees a Stationary die :Ui (Fv l) iriif-li ia mounted ii'itb ite cuttingb e; p dieper: .l in :i i'ertiezil plane. ind a i'ertiealli' Y v,l cutting-bloeit Qt which adapted reciprocate horizontally iioiard and 'treni the die. to cut lit'ts successively troni the Stoch as the stock if; advanced betii'een the die und the ciitting'hloel. The die 2Lioiiren :it hoth ends to permit the lit'te cutla the die to pase through the die and be tori nu io n.

iliacliareed tliereironi in stacked 'the cutting-bloeit 53o ia cauFed to ieiiiiiiii iuopeiutii'e iiliile each piece ot: stock is lieiiii ted into position itor the tiret cutting' opera-v tion. and ie' adapted to be actuated onliY when the leading` end of the stoel; habeen led coinpleteli.v crore the die eo that the eutt'ine; ot e. perfect tiret litt Awill lie insured.

lieben the .etocl which is being` operated upon has been so far exhausted that there is not enough lett; to produce another complete litt. the cutting-block 2G is aiitoniai'iiicallif dieconnected lroin its actuating mechanism to preventI the cutting,r ot scrap into the die, and provision is niade lor discharg-ing` the remaining Waste portion oit the stock Atroni the line of leed otI a Succeeding piece of stock.

The operating partel ol" the machine are carried b iv a head 2S liign. l and 3) which is supported by a pair ol? brackets pro- ,iet-ting upii'ardbY :it the t'ront and rear ot the machine lroiii a pair oil Standards 52, the latter being; connected together at opposite sides ot' the machine by means of crossliai'e 234-. ji. Vertical inain shaft 3G is journaled in suitable bearings in the head 28 and is connected by interiueehingl bevel gears 2:38 t Fin'. 3) with a horizontal shaft 40 which 'iournaled in bearings in. the cross-hars l and is provided with the usual last and loose pulleys l2 and Llet. Journaled in bearinge in a pair of lgiraclets llo which are bolted to the head QS is a vertical shaft 48 (Figs. l, 5, l0, and 18) having secured thereto a cani 50 which periodically,7 actuates a lieeler that operates, upon critical exhaustion of the stoel-r, to render the cutting inechanieni inoperative. The vertical Shaft S continuoiiel)v driven, during the operation of the inaeliine, through a train ot' gearings eoiiiprisingii a spur gear 54.- on the niain Shaft 3G, an idler gear 5G that is pivotallj,7 mounted upon the head 28, and. a spur rear 58 that secured to the lower end ot the i'ertieal shat't ttl Loosely siirrounding the shaft t8 ie a eleeve G0 (Figa. lt). l2 and 13) carrying' a iLiliii'alit-y olf calins tl. tfl. titi and (iti which :ictiiate certain ot the various coinponent nieehanieulev ot the niarhine in proper tinied rel-ation ii'itli each other. as will be Iiereiiia'ltei.' set loi'th. The cani sleeve titl normali).y idle, but is adapted to he connected to rotate with the ver" tial shalt 4t; bi' menus ot clutch niechaiiiieni TO (F it). l2 and i3). The Oper-- ation ot the clutch mechanism T0 is con trolled by devices ii'bieb are in turn controlled by the piece ol" Stoel; which ia beine' operated upon. The Various .levers which cooperate iiitli the eei'cral coins lor actuatingr the componenti mechanisme of the inachine are mounted upon the head 2S.

The etoeli is cut' bij incanti of the die 2liihich arranged ii'ith its breast odge up periiioet :ind ie euitablif secured in place upon a die-holder Tl. ne shown in Figs. l and i3. The die-holiler 7l is sulietantially circular in out-line and is provided with a concentric circular shoulder 76 ii'lifieh seated in a eireular opening in the head 28. The die-holder T-lis further provided with :i beveled clainpiuit'` plete T8 (Figi: thatv is .idapted to be engaged by the correspond llt) eine Woll 12:2` is supported by 11` l1 'iielqet which hnteil to the t'rnine o1" the 11'111ehi1'1e, :11111 the .s111111 111' plett'orin 1211 i111 11;;11111 hnt 111li1-1nl1l): sewn-eil to this rshte 111111. the 11111! 1'11111 1211. :111 11111111111 in 1111;'. J1, 1511111- 11115115 n #trip of 211151111 iron infrnnrgeil with 111e 111111 l1orixo11i11ll1 1:-1,1os1e1l to 5111111011' the the Stoelr, while tl 1 e, other :unl Sommeil to lr: 1ne:in:-; 11: 'i' rlitmnlingj 111111115111 verticaal whats "1" 1111111111' rtlon permits 1fer- 1w rt the 111 itiorni 1LT) "n :11hrfith the seize irl the die e111nlojfe1`? i tf1 ot "he torlt will bi1, lmerinowij nolnt 1h11 the.

tll i i enfle n'lth `-1re: these 111111111111 1,-41'5'1 i, rlriren '1"ro111 the 1111111111 -tli hena'y cflrren 1111111 lill in 511131111111 to the 11i1f1e enti o'i 1 11111111:

Mw vk. :1,111,111

Mtl the 11111111 heul i153 the To provide 'For rrlritire 111011111101111; 1t i111- iurorrh rzil :f1 ation ot the 'trril roth: 1

:tml 52113 m `wlnte stot'l: of 11111151119; ihirh'no 11 111111111112 i nnnerfon lrtineen the :Tofu-1 1 in 111111111111111111 :111 1 111111, lff'. 1e1n1oejiroij (Fig: 11. nifl henrine'ti l't'ene; nirnnfrizl to 1111x1111); :111111111 the :111101: nhont 11'l1iel1`tl1o nnional: 1111 :11111 111.1 turn. The l'eeil rolls :1re yielding 111111251111 toward erich other l1),v 1110111111 r1er111ittlnf1j anljiniitinent o5 their1i1nit et nrnproneh, :1111i 1111111115011 is nnnle ttor nornnillr 111:1intnnnrg;l the :teeal rolia` :1t their inl- ;i :teal limit o1" npprofnh :1nd 'tor 'permittingr 11s lhen'l to 511111111110 rieltlinn'ly ln orrlerto 11eyo111n1o1h1te (litterent thicknesses ot stool; or Variations in the thiilinens of the 111i1terh1l heinggj noted upon. The Ineens einplojfefl tor rtl'oefinej the ahove reSnltS is Snhetnntifllly the :1:11110 that illustrated and described in ll'nitefl States Letters Potent No. 1,291,72t, granted January 21` 1919, to 1V. C. Baxter, 11nd ssignefl to the United Shoe Machinery Pfl 111 :11111 111) 1 111111eeting tf1- 1111 the lower Side fit the 1,1111 on the verticaal shaft +18. The nzlehet-w1111111111 nwehnnninn co111p11se11 11 1'11'el1et-Wl1oel 1li-l (151111:. 23, 11 111111 15)) :1nd

n al 1111151; 11111111 1611, eiirriefl hy 111 111111 1G51?, 111:1 is mounted to oeeilhrte freelyv on the rhntt 1132, the driving pnwl being Secured 1o the lower end of :1 111ml 1i() which is treo 1111'11 in the omer entl oil the :11'111 .168. For 111113111111111 which will he hereinafter ex ,iinineih the 1111111-ei111j1i11gr :11111 16S .is oonneeteil with its netnntlng 111eehi1nisn'1through :1 yielding comptine, one 111911111111' oit which 111111911513@ oit :1 segmental :11'111 172, which is :icffznretl :1t one onfl to the' stncl 170 on the w :te side ot the 11111111411111111111); arm 168 '1111111 the 1111111 166. The seg-mental arm 172 11's pr sided on inner peripherel 'teme with 11 notch 1?-1: of the Shape shown in Fig. 1f). Tornnilli' sented in the noteh 12'1- :1 roller 171.1 that is enrretl by :1n :111111 11S which 1S :leo :uli ined to oneillnte 'lreely on the shn'ft 152. The weight ot the segmental 111111 172 nornmlly 111:111t11i111s it in finch :1 position that the roll 1715 oneness the notch 174, 11nd the *vtnl 1(311 operntirelv @11113115115 the teeth of 't mtl-hotwheel 1151. The :11111 178 is: coneftnil 11,1' 11111111113 oit :1 1311131111111 1120 with the melf-1in 1111) on the groan' 13.1' ineens ot the :1.1111111 tleeerihebl construction the 1111111 r11- 1111151 :11,111 11151 is norlnell)v oseillnted throughout its; 111111111111111 stroke to import r.l 'l'eoil movement ol predetorlnined length to the Stoch. hnt itt 'for :1111w reason the ntlrnnee 1m" the stoel; is ohstrnctefl, the roll 11(5 ricleS tl ot the notch 1731- in the segmental :11111 1.3 :11111 the.remainder o1 the stroke ot the will not tend to rotate the rutel1ct-Wheel. 1111111111' the return movement of the :11'111 178 :1 ttor the roll 1?(1 hns.; horn (lloengnged 'from ihe notch 1111. the roll 1715 will ride idle across the inner peripheral flaco ol the segjinontul 111111 172 until it encounters the noteh 1741-, whereupon it will enter the notch :1nd through tho 111111 172 will positively restore the 1111111worrying :11111 16S into position for its .next toed n1o11e1nent. As shown n Fig. 12, the ennli-pn 1GO hy means of which The pinnen 180 is reoiprooatefl, is carried, :1s in the Baxter patent herenbefore referred to, upon :1 sliding block that is mounted in a guideway extending along the radius of said gear, and said block is adaptedl to he adjusted in the guide'way to vary the throw of the pinnen 180, and thereby the amountof turning of the gear 150 when it is desired to vary the amount of feed movement imparted to tlie feed mechanism. Before 'starting the operation of the machine the position of the crank pin 160 on the gear 58 is adjusted so' that theV length of feed imparted'to the stock Will be equal to the widthy of the particular die Which is to he employed plus the Width of a narrow strip of scrap Which is to he left between the cuts in the stock, as shoivn in Fig. 11.

1n order .toadapt the machine to operate upon sheet stock, a pair of corrugated cutting disks 188 and 190`are secured vto the upper ends of thel shafts 138 and lei), respectively, which carry the feed rolls. The cutting disks l188'and 190 serve to separate a stripofmaterial from vih-ich the lifts are immediately to he died from the lower portion of a vsheet of .stock as the cutting operation progresses. The cutting disks overlap, as shoyvii in Fig. 1, and .cut the stock with a rotary shearing action asis in the machine of the aforesaid Baxter patent. The manner in Which a strip is separated by the cutting disks from a sheet of stock is illustrated in Fig; 11a, in

`which the line of cut made by the disks is in? stock is fed acrossa die-stripper 192 (Figs.

fik

1, 6, 7 and 8) and then passes between the die and the 'cutting-block] The die-stripper 192co1nprises an arm rising vertically be' tween the die and the feed rolls, and having a stock-engaging face normally positioned in a vertical plane slightly atthe rear of the cutting edge of the die; The diestripper arm is secured at its. lower' end toa slide block 194: (Figs. 6 and 8) which is adapted to slide forvardly and rearwardly upon a horizontalface 1196-, on the headv 28; The slide-block 19am guide-d in its sliding more? ments by means of a pair of guide rodsllt projecting forwardly from `ilie slide-block and extending into retesses200 in' the head 28.-y Surrounding each guide rod 198is a coiled vspring 202, one end of which hears against the front vertical face ofthe slideblock, While the opposite end thereof engages a vertical face formed on the' head 28, opposite'- vthe slide-'block The 'spring 202 normally maintains the die-stripper in the' position in which it appears in Figs. G and 7, ivith its stock-engaging face disposed' rea-r- Ward-ly of the cutting edge of the die. As the cutting-block cooperates with the die the stock is' displaced forwardly While av lift is being cut therefrom, and the die-stripper is correspcndii'igly displaced by the stock,

v against t-he force of the spriiig 202. Upon movement of the cutting-block away from the die', the diestrip'pr is moved rearwardly' by the spring 202 and strips .the stock from the die;

in order toprevent the leading end o'f the stock from striking against the die-stripper as thefsto'cl'r advancesilieyond the feed rolls,-

nieans is provid-ed for guidingthe portion.

of the-stock exten-ding between the feed rolls and .the die-stripper; This means comprises a pair of guide lingers 206 and 208 (Figs. 1

'and t) which yiel'd'ingly engage opposite sides of the stock. The guide linger 206 is pivoted at on'egend upon stud risingfrom a:

bracket 210 (Fig. Ai) Whicliis rigidly but ad` justa'blyr securedto thefrear side viali ofv verse annular groovein the feed roll 134, the finger terminating at a point adjacent the near side of the die .and at the rear of the die-stripper. Als shown-,in Fig. 4i, the length of the guide finger issuch that the finger will not interfere .ivi-th the reciprocation of the cutting-block. y.The guide finger 206 is acted updn by a coiled spring 212 which .tends to oscillate' the' linger about its pivotstud :so as to urge the Vfree extremity of the finger forwardlygintothe guideyvay 118. To' this end'tlie spring 212 is securedk at onefend` to` a' lufgr21eil projecting forwardly from the finger 206, While at its oppositeend the spring is secured ,to therear rside wall 121i of the guideway'llS: The guide finger 208, u'liicli cooperates with theguitle finger 206to' direct the' stock across the die-stripper and the die, is connected, at the end remotef from ythefeeding mechanism, vrto a member 216" (Fig. 1) that is pivotally mounted jupon the outer side'V of the front lside Wall 122. The guide finger ,208 extends close to the outer side of lthe side Wall 122 to av point substantially oppositepthepivot stud upon which the guide finger 206 is mounted, and from this point `thefinger v2084 .Ciirres rea-r- Wardly through a slot in the side Wall 122 and into the -guideivay'118'Where, if no stock is present, the tWo'guide lingers engage each other at, avpoint inrthe common axial plane of the feed rolls. At this poiiit the guide iin-ger 208 is received in a, transverse annular Vgroove inv the feed roll 13G, and thence it eXtendsJin parallelism lwith itscooperatingfinger tothe fr ee end of the latter. To press the gnideiinger 208 toward the guide finger 206to` yieldingly engage and guide the stock, tlie-guide'fiinger 208 is acted' upon by.V

roo

llOA

a coiled spring 21.8 (Fig. Il) which surrounds a stud 2.20 projecting forwardly from the stationary side wall 192, one end of the spring bearing against the guide linger 208, and the opposite end ot' the spring against a nut on the stud 220 which may be adj usted to vary the compression ot the spring.

As thestock advances beyond the diestrpper 192, its leading end is supported upon a movable platform 226 (Figs. (i, 7, 8 and 1T). This platform Q26, being located in the vertical plane oi the stock and in a horizontal plane just beneath the lowermost portion ot the cutting edge ot the diealics in the path ot movement ot the cuttingblock as the latte advances toward the die. The platform 226 is so mounted that it may be laterally displaced toward the front of the machine at each advance of the cuttingblock to permit the latter to cooperate with the die. Under certain conditions, also. the platform 226 performs a die-stripping `function, as it returns to normal strip-supporting position, atter being laterally displaced therefrom. In addition to being laterally displaced at each advance of the cuttingblock for the purpose above described, said platt'orm is momentarily displaced by means oi cam-actuated mechanism, after the last litt has been cut. and the operation ot the cutting-block has been arrested, in order to permit the remaining waste end o't the stock, it' any is present, to be discharged from the line of feed et a succeeding piece of stock. On account of this latter operation the plat form 226 will hereinafter, 'for convenience, be termed the discharge platform. The cam-actuated mechanism above referred to operates not only after the last lift has been cut but also after each successive cutting operation to modify the action of the discharge platform as the latter is displaced Vduring the advance o'l the cutting-bloeit.

For this reason the construction oi the discharge platform, and the manner in which it is displaced to permit the cooperation oi' the die and the cuttingeblock, will be de scribed later. in connection with the descrip tion ot said cam-actuated mechanism and the manner in which the discharge platform is displaced thereby to etlect the discharge oi: the scrap.

When the stock has been ted into position ior the lirst cutting operation, the clutch TO is operated automatically to rotate the cam sleeve (i0 through a halt revolution tor the purpose ot' connecting the cutting-block with its actuating mechanism. The operation of the clutch is controlled by a pair ot clutch controlling dogs and 232 (Figs. l0. 'i2 and i8), the t'ormer beingl tripped to initiate the rotation ot the cam sleeve GO by mechanism including a sliding abutment or teeler 234 (Figs. l, 2, 5 and 122), which is engaged and displaced by the Lawine?" leading end oit the stoel; as the latter reaches the larther end of the die. rlhe clutch-controlling dog Q32 brings the cam sleeve (SO to rest at the completion of the halt revolution which is initiated by the tripping ol" the dog 2230.

The sliding abutment i234 consists of a har which is dovetailed in the forward side ot a slide 236 and rigidly secured thereto with provision :tor a longitudinal adjustment by means oi screws 2138 extending through longitudinal slots in the abutment bar ti-if and into the slide 236. The slide 236 is provided with vertical guide-ribs 2i() (Figs. 2 and l2) which are received in guideways 242 that are 'formed in a ln'aolret Q-llt which is secured to the head 28, the. guideways 242 heilig inclined rearwardly from the plane ci1 the stock as the latter is ifed across the die. Normally the slide 22:36 occupies the position in which it appears in Fig. l, with the abutment 234 overlapping the adjacent cutting edge ot the die and lying in the path ot moven'ient of the stock. The slide 236 carries a dog 246 (Figs. l, 2 and which is pivoted on a vertical stud 248, the dog projecting rearwardly from the slide and being received in an elongated slot 250 in the bracket 241i. The dog 2lb is normally held yieldingly. in the position shown in Figs. l and 2. by a spring 252, the outward movement ot the dog under the influence ol the spring being limited by a tail 254 which is arranged to engage the base of a recess in the slide 236 into which the tail extends. The dog 246 is adapted to engage a .finger 5G which is secured to the upper end ot a vertical rocka sha-tt i258 to the lower end of which the elatch-controlling dog 23() is secured. The rocio-shaft is adapted to oscillate in a bearing- 260 which projects rearwardly from the bracket 241i.

When the leading end ot the stock which in being advanced by the feed rolls engages the sliding abutment 2255i. the latter displaced toward the le'it side oi the machine by means et the stock. causing the slide 2256 also to move toward the lettin its guide- Ways. The dog 'fi-lr6 then engages and aetu ates the finger Q56 to rock the shalt 25S and trip the clutch-controlling dog Q30, thereby rendering the clutch TO operative to rotate the cam sleeve (S0.

The clutch Tt) which is best shown in Figs. l0, 1:2. 'i3 and 18, comprises a driving' clutch member 2M and a driven clutch member 266. The driving clutch member 26st consists of a disk (Fig. 1B) which is secured to the vertical shaft Li8 and is provided with a plurality oil driving' lugs 26S 'formed on its upper face. The driven clutch member Qtt comprises a yoke which straddles a collar 270 which is adapted to turn on the shaft 48, above the driving clutch member 264, said yoke being pivoted to the `collar 270 by means of a stud 272. integrally formed with the collar 270 and projecting upwardly therefrom is a bushing 27a (Fig. 13) which is interposed between the shaft t8 and the cam sleeve 60.- ri`he driven clutch member 266 is provided with a tongue 276 (Figs. 10, 12

and 18) that is adapted to cooperate with one or another of the driving lugs 268 on the driving clutch member. r1`he ydriven clutch member 266 is engaged by one end of a spring 278, (F ig. 10) the opposite end of which bears against an ear 280 projecting from the collar 270, the force of the spring tending to depress the driven clutch member and maintains its tongue 276 in the path oft rotation of one or another ot the driving lugs 268. n

)While the cutting mechanism is inoperative, the driven clutch member 266 is maintained with its tongue 276 raised out of cooperative engagement with the driving lugs 268 by means of the clutch-controlling dog 230. After the dog 230 is tripped, the clutch members remain engaged only momentarily to cause thecutting-block to be connected with its actuating mechanism, the dog 232 disengaging the driven clutch member atter the cam sleeve has made a halt revolution. While the cutting mechanism is operating, the driven clutch member is held out of engagement with the driving clutch member by the clutch-controlling dog-,232 whichv is loosely mounted upon a vertical post 282 (Fig. 10) that is supported in the brackets i6. After the dog 232 is tripped, to cause the cutting-block and its actuating mechanism to be disconnected, the clutch members are engaged only during another half revolution on the cam sleeve 60, after which the clutch members are disengaged by the dog In order that the driven clutch member may be held out ot engagement with the driving clutch member to maintain the clutch inoperative, the two clutch-controlling dogs are severally provided with segmental lateral flanges 284, each concentric with the cam sleeve 60 and rising vertically from its respective dog into the path ot' rotation of the tongue 276 of the driven clutch member. The flange 284: has an upwardly inclined upper edge adapted to engage and raise the tongue 276 to rock the driving clutch member about its pivot stud 270 until it is disengaged from the driving lugs 268. Beyond the inclined upper edge .ot the flange 284 is a shoulder 286 which engages the side ot the tongue 276 vand arrests the rotation 'ot the driven clutch member after the latter has been disengaged Jfrom the driv ing clutch member.

i/Vhen the clutch-controllingdog 230 is tripped to cause the rotation ot the cam sleeve 60, Ythe camy 66, carried by the cam sleeve, operates to render the cutting mechanism active. The cam lever 200 (Figs. 10 and 12) is pivotally mounted at one end upon the rock-shaft 258 and carries a cam roll 292 which rides on the periphery of the cam 66, a spring `29a holding the cam roll against the cam. Pivoted to the outer end ot'y the cam lever 290 is the rod 112 which normally holds the push bar 102 in inoperative position at one side ot' the lug 110 on the plunger 90, and thus causes the push bar to reciprocate idly while the plunger 90 and the cutting-block 26 remain stationary.

In order to render the cutting-block operative, it is necessary to withdraw the rod 112 toward the left side of the machine so as to permit the spring 108 (Fig. 15) to swing the push bar 102 into position to engagethe lug 110 of the plunger 90, Then the rod 112 is withdrawn, a stop shoulder 111 5) on the lug 110 limits the angular movement of the push bar under theiniiuence oit' the spring 108. During the hall revolutionof the cam sleeve 60, the cam 66 operates to thus withdraw the rod 112 and after the push bar 102 has been positioned behind the lug 110, the advance oit' the push bar advances the plunger 90 and the cuttingblock 26. Upon the rearward movement ot the push bar 102, the springl 11% moves the plunger and the cutting-block rearwardly.

During such time as the plunger 90 is idle, it is held against the action of the spring 114 in theposition in which it is shown by dotted lines in F ig. 1 to provide clearance between the rear face ot the lug 110 on the plunger and the forward face of the push bar 102 by means of a detent 295 (Figs. 1 and 5). The detent 295 constitutes one arm ot a bell-crank lever 296 (also shown in Fig. 12) which is ulcrumed on the post 282, and-the detent is normally seated in 'a notch v297 in the adjacent Side wall oi" the plunger.

Upon the lirst advance ot the plunger, the rear side wall et the notch 297 acts as a cam to force the detent arm out et the notch, and betere the plunger 90 is retracted so as to. return the notch into position oppesite the detent, the lattenis held in retracted position, as shown in Fig.V 5, by means ct the cam 6st on the cam sleeve 60, said cam engaging a cam roll 298 carried by the other arm oi the bell-crank lever 1n this way the plunger 90 ispermitted to ltollow its actuating link 102 rear '-.f'ardly beyond the position invwhich the plunger is maintained when idle, the lug 110 on the plunger remaining in Contact -with the link 102 throughout the entire extent of both the forward and rearward movements ot the latter so that the cutting-block will be recip'rocated as smoothly as ir" it were positivelyconnected with its actuating mechanism.

In order that the sliding abutment 5l-fl

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