US823119A - Paper-cutting machine. - Google Patents

Description

6. 0 9 .I 2., l ..L N U Tu D E T N E ml A P um .l D R An H am Tu. 9. 1|. 1.... oo 2 o0 nw N .PAPER CUTTING MACHINE.

APPLICATION FILED HAB.. 28, 19'05.

5 SHEETS-SHEET l..

l I r l l l l l x a l A l l l n ATTORNEY WITNESSES:

PATNTED JUNE 12, 1906. Hmm.

5 8HEETB`SHBET 2,

PAPER CUTTING MACHINE.

APELIUATIOR FILED Lanza, 1905.

MSN Nf N LL.

ATTOR N EY PATENTED JUNE l2, 1906.

AFPLIUATION FILED MAILZB, 1905.

5 SHEETB-SHEET 3.

K/X/ /2 my No. 823,119. PATBNTED JUNE l2, 1.906.

' J.. G. BARBIE.

PAPER CUTTING MACHINE.

APPLICATION FILED MABLZS, 1905.

5 SHEETS-SEEET 4.

.m l v 1 n v x.

PATENTED JUNE 12, 1906 J. G. HARDI. PAPER CUTTING MACHINE.

llllmnil @N um .si

NNW

'wn'NEssEa in laper-Cutting Machines,

"" "rvr,

PAPER-CUTTING. MvAol-nne.

Specification of Letters Patent.

Application led March 28,

Patented .iur-ae Eff.,

1905. Serial No. 252,595.

fo tu zii/2,0m it may concern:

Be it known that I, JAMES G. HARiDrE, a citizen of the United States of America, and a resident of the'city of Canton, county of St. Lawrence, State of New York, have invented certain new and useful Improvements of which the following isa specification.

My invention relates to paper-cutting I nachines, and more particularly to that class of paper-cutting lmachines which are driven by' power and are adapted to cut stacks of aper of various dimensions as well as to trim ooks and perform other similar kinds of work,

The object of m invention is to provide a machine of this c ass which shall be simple and effective iii its construction and o eration, which shall be capable of handling a wide variety of work more expeditiously and conveniently than has beenpossible with the machines heretofore in use, and one in which special provision is made to prevent injury to t e paper while it is being held or clamped for the operation of cutting.

My invention consists in providing a suitable framework which com rises, essentially, two side uprights secure to a horizontal table or bed which is adapted to receive the paper in stacks or other form, in providin vertical guides which extend above the ta le, mounting a` cutter-bar in said guides nd .connecting it to cranks secured Vto a 'Nirank-shaft which is journaled in the frame;

in transmitting power to said crank-shaft by means of elliptic gears from a shaft which is driven at-a uniform speed, so that the descent of the cutter-bar consumes a greater amount of time than its ascent; in providing a power-clamp and means for causin the clamp to descend irl-'advance of the kni e until it strikes'the paper and means for causing the clamp to remain in contact with the paper until the knife'is free andclear above it on its return stroke; in providing means for varyin the pressure exerted by the clamp upon t e paper; means for increasing the pressure of the clamp upon the paper in successive incrementso predetermined amount between the times when the clamp and the knife first strike the paper, the organization. of the parts bein `'such that the excessive pressure produce r`when. the motion of thev clamp is arrested byjirst coming in contact with the paper-that is, when the friction beins to slip-is eliminatedor reduced to a harmless amount, and in the novel construction of the subclain ing it.

My invention consists, ifi it, ing a novel means for am and automatically stoppi in the cycle of operandi. struction of the gage mec for actuating the saine, and in features to be hereinafter mor pointed out and described.

In the drawings acconip..nyin2 ing-part of this speciiication, Yi" side view of the machine. partially in section, on li'f 3 is a front elevation, line 3 8 Of Fig. 1. n. si is a 4 of Fig. 3. Fig. 5 is an en thesubclamp. Fig. 6 is a portion of the subclamp. Figs enlarged sections taken on line "i i showing different op main clainp-bar-actua r sin. 9 is a partial section througgli the out and blade and clamps, showing ferent operative positions. iii tial planview of the back ga arranged for trimming bool side view of the saine, and i on line 12 12 of Fig. 1U. Rg section through the rock-sha? 7G, i. cylinder 71, andthe cecilia-ting fra me. s ing one of the hooksdrawn outwariy in its non-engaging position,

The reference cli saine sense throughout specification.

The main framework ofthe macliiiie corisists, essentially, ofthe nprighte' at the sides pand means for op.

of the machine and the table or bed If.. The g5 u rights are provided with exte i ons 3, w (il are located near the iront ci' niachine and extend some distance above the table and serve the purpose of to cutter-bar and the cianipoara, 'Vi "s tensions are tied together oy t` girder or beam e. A represents l pa er.

umeral 5 .represents the cuttenbar.

it' has the usual'cuttenblade G secured to it, and it is provided .at its-ends with balls ier the upper ends of the connectingaods 8. A iink 9 is pivoted to the beam and the cutter-ban 5 in the usual manner to give the cutter-bar a transverse motion, as is ywell und f toed. 10 represents a crankshaft wliic s the cranks 11 secured to its ends. These'cranks i V] hen the roclesliaft '2S ver, by means of the` set-screw 31.

vdriven at luniform sp atter shaft is also secured the gear 1), engages the pinion 20, loosely mounted on l. 21, and itis engaged .by the lever are provided withballs 12 for the lower ends of the connecting-rods '8.

13 is an elliptic gear secured to the crank shaft, and it is engaged by the corresponding elliptic gear 14, mounted on the shaft 15. rthe elliptic gear 13 is so located on the crankshaft 10 that that portieri of the pitch-line of said gear having the smallest radius is in ere gagement with that portion ol the gear 14 of greatest radius at the time when the cutterbar is about in the middle of its ascenriling stroke, from which it results that the veloc ity ratio between the crankshaft 1() and the intermediate shaft 15 is constantly changing and is greatest during the ascent of the cut# ter-bar and least during its descent.

I prefer to so 'form the elliptic gears that the ascent of theeutter-bar shall take place during about one hundred degrees of the revolution of the intermediate shaft 15 and its descent during the remaining two hundred and sixty degrees. The purpose of this construction is not merely to obtain a relatively quick return and slow descent of the cutter-bar, but also to obtain a more uniform descent. When the crank-shaft is eed the cutter-bar moves at highest speed at the middle of its stroke-,Withfthe result that when the cutterblade strikes a stack of aper near the iniddle of its descending stro re it partak'es of' the1 nature of a blow, causing severe strains upon. the machine. it will bev seen that by mea is of my improved construction tle 'machine may be run at much higher speed and the commencement of the /cut for stacks of diterent heights will be much more uniform than with the construction heretofore in use.

The gear 16, secured to the shaft '15, engages the pinion 17 on the shaft 18, on which which the shaft 21. The pinion 53D is secured to a clutch 22. The clutch 22 is preferably some torni of friction-clutch, and lit may be o1q any approved construction.

23 is a cone slid ably mounted on the shaft 24 in such .a Way that when the cone 23 is moved away from the clutch 22 the engagement of the lever 24 with the cone Z3 will put the clutch into action and cause the pinion 20 to revolve with the shaft 21.

. 25 is a groove in the cone 2B, which is gaged by the pin 26, secured to the iever 27, which is mounted on the rock-shaftl is turned to the left, the clutch 22 thrown' into action, and when it is turned to the right it is thrown out oi action.' p

The lever 29 is rigidlyseeured to the shaft 28,. and'it is provided with a lug 3() and set-- screw 31. 'lhe lever 32 mounted on the on is adjusted Ollsh'fit 28, and its position there A. ivcightei'i arm 33 is looseiy mounted on the shaft 15 beside the gear 1G, and a lug 34 secured to (the gear 16 in the path et the weighted arm 33, so that as said gear revolves the lug 534i will engage the weighted arm 33 and litt it to its highest position, after passing which, however, it drops by gravity and strikes theY lever 32 on the shaft 28, thereby turning said shaft and moving the cone 23 toward the clutch 22 and throwing said clutch out of engagement.

l t is thus seen that the clutch 22 is thrown out ol engagement at a predetermined point in the revolution of the shaft 15, this point being at the time when the cutter-bar has just returned to its highest position.

A hand-lever 35 is securei oi the shaft 28. rlhe machine is started bymeans et this hand-lever when the paper has been adjusted. to a proper position, and itis automatically stopped by the Weighted arm as soon as the cutter-bar has returned to its highest position, A pinion 36 is secured to a clutch 37 and engages the gear 16. ri`he clutch is operated by a cone 38 and lever 39, mounted on the rock-shaft 28 in the same manner as the clutch clutch 37 is thrown out of" engagement when the clutch is thrown in, and vice versa. 'ihe shaft 40, on which the clutch 37 is yniounted, is stationary7 and when the clutch is thrown into engagement it acts as a brake, tending .to retard the motion oi'" the gear 1, which is in engagement with the pinion 36.

The details oi the clutclns 2') and 37 aile not shown, as they form no part of 'my present invention and it is obvious that any of the well-known forms of ifiictioinclutches which'inavl 'i 'anged to be thrown into and out of er mt by making proper connectio'nsv a 'movable member, such the rock-shaft 28, would answer for the purpose, The beltavheel 41 shaft 21 and ifs ad aptcd to be belted. to any convenient source o'ipowor, ably made of sufficient weight to answer at the same time for the purposetof a fly-wheel.

Mounted in guides in the upright exteny sions 3 immediately behind the cutter-,bar 5 is the main clamp-bar n'iediately beneath 'themain' clamp-bar ,42' and adapted to move up and down the-saine guides is the subclamp 43. The subclamp t3 is adapted to be operated manually through conne/ctil ns which will presently be explained ally by its engagement with the main clamp4 bar 42, which descends upon the subclamp and forces the'latter down upon the stack oi paper position durirnT the:

to. hold the saine .in i Ppi- A but 'arg1- cuti--ig operation. Y ic su i, amp is tant,

weight `is counterbalanced by springs oi otherwise, se that i mwa rs tends to rise-and comparedwiththe main clamp-bar andit.4

make contact with the bott-em of the maisl L12, and mounted i1 1- l to the Jfront end 22., except that the lis secured te thel l,

or nie'chanicalfly andfautomatici 35 contact with the main clamp-bar 42.

esame clamp, the normal position of thel main clamp when the machine is at rest being' at the top of its throw.

The subclainp consists ol a longitudinal vertical web al and rearwardly-projecting lingers 45, (sce Figs. 5 and 6,) and it has secured to its under surface an elastic sli-oc Lto, preferably inade of felt, leather', or other coinpressible material. At the lront edge of xo the lower surface of thc subclainp is rib 47, which extends down below the main surl'acc ol the body of the sube-lamp a distance somewhat less than the thickness of the elastic shoe 46, so that when the subclanip exerts i5 pressure upon the surface of' the stack el paper the rib 47 will be out of contact with the paper. The purpose ol the elastic shoe is to prevent creasing or indenting the paper sheets of the stack of paper when pressure is zo exerted upon the subclainp, and the purpose of the rib 47 is to present a straight metallic edge close to the line of the cut. Pivotally secured to the ends of the subelamp are the links 48, and pivotally secured to the lower ends of said links are the levers 49, which latter are rigidly attached to theroclr-shaft 50.

A hand-lever 51 is pivotally mounted 'en the bracket v52,.secured to the front of the i' machine, and the said hand-.lever has a forked 3o end which engaves a in in the lever 53, secured to the roc @sha 't 50. A lever 54 secured to the rock-shaft 50, and a siningL 55 is attached to the end oi said lever ol sulicient strength to raise the subclainpand keep it in A lever 56 is also secured to the rock-shaft 5() and connected, by means ofthe links 57, to the A foot-'treadle As will be apparent from the above expla 4o nation the subclanip may be brought do i vupon the paper either by the hand-lever 5l. or by the foot-lever '58, and the direction of the motion of both they handlever and the foot-lever is the same as that oi the subclamp. The purpose of havinff the subclamp operate independently. or the main clarnp-bar is to enable the operator to bring y the subclamp down to the stecker' paper, so as to determine exactly where the line oi" cut 5o is going to take place before 'the power-clutch is thrown into action. v

The main clamp-bar 42 is of sulicient strength to give it great rigidity. it isprovided with rearward projections 63, correH spending .to the rearwardiy-projecting` 'liaV gers, 45 of, the subclamp and its lower surface isplanedso-as to accurately'tit ythe upper sur.

' faceA Q the-'subclanipwith which it makes contactl' The main clamp-bar 42 is provided 6o With-a stud 60, which is mounted on a' roller lmvhich roller overhangs the cutter-bar 5,

so that when the cutterbar rises its top surfacewillengage the roller 6l and carry with it the main clamp-bar and` the subclainp. At

'35 all times except vwillen-the subclanip .is operated manually the subi-.la mp and the i'nain clan'xp-bar act togetlur as a single member. 'lhe distance between the cuttingn edge of the linit'c ("3 and the top surface ol' the knife-bar is such that when the knife-bar engages the roller (il the cuttingl edge olVl the knii'e shall be above the lower suiace ol' the clamp. This insures the knilo being' free and clear above the top ot the stack oi" paper before the clamp has been withdrawn therefrom, thus `preventing,l any disturbance ol the stack which might result from the movement ol' the knife in contact with. the l'ront l'ace ot the stack if the stack was not secured by the rlainp.

At its ends the clanip-bar 1L is connected with the links (lll by means ol the bindingscrews and the anjusti1ig-scr ws (36. The links (il are provided :it their lower ends with elongated slots (37, in which operate the studs ('38, fixed to the levers (Si), said. levers being keyed to the roe.l;shalt '70. The elainp in the drawings is shown resting upon a stack of paper, aout having just been made and thel cutter-bar beingl in about the middle of its lreturn or upvv'ardstrolie.

The clamp-bar nieves 'downward from its highest position with the cutter-bar by gravity, carrying the subclamp with it, the lower or contact su rliace ci the subclalnp being always slightly in advance of the cutting edge 9 5 et the knife-blade until its movement is arrested by contact with the paper, at which point and just before the cutting edge of the knife-blade has reached the pa er the stud 68 in the lever 69 engagesthe en( of the slot 67, 10o bringing the appropriate pressure to act upon the clamp-bar by means of the friction mechanism which l will now proceed to describe.

Rigidly secured to the rock-shaft 70 is a Jfriotion-cylinder 'Z l, and mountedl on this 105 irictien-cylinder are a plurality ci frictionclarnps each consisting of an upper piece 72 and a lower piece 73, united to the former by means oi' bolts 74 and 7" The cylindrical bores of the friction-clamps are provided. 1ro

with a lining 7 6, of leather or other suitable' material. The upper part 72 cf the frictionclamps is provides with rearwardly-forojectl ing ends 77, which carry the adjustable banking-bolts '7S and forwardlyproiecting; arms U5 79, which carry the adjusting-screws 50.

ivotally mounted en the rock-shaft is lan oscillating frame rfiiii'ih. consists 'oli the side members Si, joined by an end piece` 82 and by the shafts `and` 84;, and each side 1go piece is provided with an arm 85.' carrying the 'iin 86, which engages the earns 87, keyed to t 1e shaft l5. Mounted on the shaft 83 of the oscillating frame' are a'plurality'of hooks 258 equal in number to the number of friction- 1 2 5 clamps, each hook being adapted to engage .one of said cla-inps. The' .hubs of the hooks $8, which encircle the shafi, are split and rovided with a binding-screw, which may lie adjusted to give a certain amountoifrc- ,13o

tion between the hub and the shaft for the purpose of causing the hooks to remain in whatever position they are left. A. rod 89 is pivotally-attached to each of said hooks`and extends 'forward through the front plate 82 of the oscillating frame, where it terminates in a knob conveniently accessible to the operator of the machine.

As will .be apparent from the drawings, the revolution of the cam 87 will cause the oseillating frame to oseillate, and during the downward movement of said frame each hook 88 which is thrown inward to its engaging or operative position, as shown in Fig. 4, will engage its corresponding friction-clamp and carry said clamp with it and by virtue of the friction between the friction-clamp and the friction-cylinder 71 will cause the cylinder and the rock-shaft 70 to move in unison withthe oscillating frame until the engagement of the pin 68 with the end of the slot 67 and the engagement ofthe subclamp 43 with the paper arrest the motion of the rock-shaft 70, from which point the friction-clamp will slip upon. the friction-cylinder and cause a. certain pressurev to be exerted bythe subclamp u on the paper. t

It wil also be apparent that if any one or more of the hooks 88 is withdrawn from its engaging position the corresponding frictionclamps will be thrown out of action and exert no influence upon the subclamp.

In the operation of power paper-cutting machines it is desirable to have the clamp exert as great a pressure as possible uponfthe paper without producing indentations therein, and if the clamp is adjusted to give the pro er pressurefor a broad cut it willbe found to e excessive for a narrower out. It will be scenthat by means of my construction the operator may quickly and conveniently modify the action of the clamp to suit the requirements as they arise.

During the upward movement ofthe oscillating frame the friction-clamps are returned to" their normal position by the engagement of the ad'usting-screws 80 with the shaft 84. The ban Aing 90 is provided to arrest the movement of the friction clamps at the proper ppint -on their return, the adjustingscrews 7 8 in the rear ends 77 of the frictionclamps bei-ng ad apted to engage the banking 90 for this purpose.

In all kinds of friction devices what is known as the starting friction is far in excess of what is usually termed the running friction, or the friction between the surfaces after they have begun to slip. It is, however,therunningfriction,or thefrictionwhich A 6o takes place during the slipping of the frictionclamps upon the friction-cylinder, which is relied upon `to -hold the naper during the cuttingo eration, from W lch-it follows that if `the friction device of a .paper-cutting machine is so adjusted as to give the maximum l clamping action obtainable without ini" the paper while the frictionis siippingis, while the cut is actually taking pl starting friction being far in L' 't running friction will be so great the aper. In order to mirjn; of t is peculiarity of fri.' tion, I arrange friction-clamps so that they come "to r ation successively, thereby avoiding the eessive starting friction which would occur all of the friction-clamps came into actie. ksimultaneously. This is accomplished in following manner: 'l

The ad justing-screws 89, whit' by the shaft 84 during the 'ret tion-clamps `by the upward me oscillating frame, are so adju the upper surfaces of the n etico-clan which are engaged by the hooks 38 sively-increasing heights, the engagir of the hooks being arranged at ui heights, so that during the downward ment of the oscillatingframe after the recit shaft has been arrested by the contact of the subclamp with the paper the several fricne tion-clamps will corne into action succes-A sively, as will be clearly' seen in Figs. 7 and. Mounted on the table 2 to the rear of the clamp-bars are the movable gage- brad t 91, 92, and 93. These gage-braclmts are pres vided with rollers 94 to if eilitate their nir ment back and forth. Each 'i 1 also with vertical webs 95, in iv l gitudinal slots for the reception i ing-bolts 96. By means of thi the gage-frames may bf a forth relative to each. otl 10, 11, and .12, where the itral .-ii 92 is considerably in advance of the e frames 91 and 93. The pin'pose of vconstruction is to provide feA bhe simultaneous trimming or cutting of stacks .of di lV mensions--such, for in the different edges of boo In the figures referred to, B repre whose edges c, d., and e are to be trimmed or cut in the order named. For this purpose the gage- frames 91, 92, and 93 will be ,adjusted so as to bring the front or working face of the gage-iingers in proper relation, so that ,a i single outv will trim the end C of the books gaged by the frame 91, the sides l) of the books on the frame 92, and the ends It of the books 'on the frame The books at the sides will be guided and ali-ned by the side guides 110, as is usual. In order, however, to provide for the trimming of a greater nunzber of books-at a time, I provide intermediate guides 111 and 112, which are joined by a transverse member 113, adapted to be secured in position by the bolts 114 or in any other convenient manner.

In order to steady ntim. stacks, i. provide a top guide 115, which is also secured in position by the belts .114C .or in any other cordon- 13,@

" ner, and in order to provide for a urge of adjustment between the three cer to provide for trimming very narrow book i. provide fillers 116, which come bethi top guide 115 and the transverse lng bar 113.

is mounted in cach of the gagesome distance above the surface of le, and upon this shaft a number of xrs 9S are pivotally mounted. The ace 99 of the gage-fingers rests upon of the table, and the front face 'ht angles thereto. .-'ingers are loosely' mounted on and may move independently and they are brought by graveontact with the surface of the 2e purpose of this construction is t0 between each of the ga e-inle surface ofthe table eveni there ari ties in the latter, and by having er of the shaft 97, on which the gagei "Voted, iocated above the center e-surfaee of the ga e-fmgers the einst gage-surface tends to ge-in sdown in contact with of the table. y

yelre 101 is secured to the ge rame 92 and has threaded holes f. hieh engage the screws 102. e mounted in brackets at the ie table and have fixed to their rear eied pinions 103, which 'mesh with Aons 104, fixed to the shaftA 1-05, on also y secured the spiral gear 106. i, 10S meshes with the spiral i, ich is mounted on the shaft 108, uch extends frem therear of the machine ur erneath the tabie to the front end thereof, i. Iwheel 109 is mounted. l be apparent from the drawings, the be vcd forward or backward by iii-wheel 109. By means of i table, and by the engagement of v10.1 'with the screws 102at points A ed the accurate a'linement of s is easiiy adjusted and maintained. 'hus d escribedvmy invention, what in a paper-cutting machine the combina. ien. with a clamp-b ar of a plurality of frict' said clam -bar and for separately throwing sai friction devices into and out of action.

2. In a paper-cutting machine the combination with a clamp-bar, of a friction mechvriem adapted to actuate said clamp-bar proce l 'f 'fh means for automatically increasi i clamp-bar after its moting machine the combipar of a frictional clampyhamsm provided with actuatmg 1;.

mies 91, 92, and 93, and especially in.

tlon of means on I avoid the usual central means for varying the power which said clamp exerts upon the paper in a predetermined manncr.

4. In a' paper-cutting machine the combination with a clamp-bar of a plurality of Jlamp-bar-actuating devices each capable of producing a clamping action of certain power and means for bringing a plurality ol' sald clamp bar'- actuating devices successively into action.

5. In a aper-cutting machine the combination Wit 1 a clamp-bar of a power-actuated member, a plurality of friction devices ad apted to connectsaid power-actuated member to`said lclamp-bar and means for independently throwing said friction devices into and out of action to regulate the power of the clamping action of said clamp-bar.

n a paper-cutting. machine the combination with a clamp-bar, a power-actuated member, a plurality offriction devices adapted to connect said power-actuated member to said clamp-bar and means for independently throwing said friction devices into acl for increasing the power of said clamp-bar after its motion has been arrested by contact with the paper. v In a aper-cutting machlne the combination wit a clamp-bar of a power-actuated member, a plurality of friction devices adapted to connect said power-actuated member with said clamp-bar and means for severally throwing said friction devices into action, and causing them to act successively upon said clamp-bar.

8. In a paper-cutting machine the combination with a clamp-barof a rock-shaft, con.- nections between said rock-shaft and said clamp-bar and plurality of friction devices each adapted to move said rock-shaft with a predetermined power and means for putting said friction devices into action independently.

9. In a aper-cutting machine the combination wit a power-actuated clamp-bar, of a rock-shaft, connections .between said rockshaft and said clamp-bar, a plurality of friction devices each adapted to move said rockar successively.

l0. In a aper-cutting machine the combination wit a clamp-bar, a rock-shaft and connections between the rock shalt and clamp-bar, of a power-actuated reciprocating member a plurality of frictional connections between the reciprocating member' and rock-shaft, and means for throwing said frictional connections into and out of action severally.

1 1. In a paper-cutting machine the combination with a clamp-bar, a rock-shaft and connections between the rockslt-.ift and IOG- IOS

IIO

l a predetermined power, meansfor l.

clei1ioi e'i, ol" e power-driven rcciprocntiile member pivotzilly :ittztched to the seid shul'lt, devices in lrii-,tionatl enge-gement 'with sind rock-shaft :ind ineens to enen-ge und disons gege seid pow ,r-(,lriven member and seid dcviccs.

l2. ln n Aympciecutting machine the combi nntion with o clump-burr, e rock-shalt :nu:

connections be'irween seid cln'mp-lmr end sind i rock-shalt, ol' e friction-cylinder secured to seid rock-slmfte friction ineniber mounted on seid lrictn,i1-cylinder infrictionel engagement therewith, e. Ypovvei=ihriven reciprocating member end ineens for operatively engaging und disengngingl seid reciprocatingl member with scid l`ri .:tion niember. A

13. ln e. pnpeneutting mnchine the combination with :t chemo-ber, si. rock-shaft end connectuins betwcenfsnid. clamp-ber and seid rock-shel`t, oi e lirictio.ncylinfiier secured to sind rock-shot@ a. plurality ol`Y friction ineinbcrs mounted on seid (.:ylinder in/'irictionol engagement therewith, :i power-driven shaft hai-ving n. cem n'iountcd thereon, :r'reciprocating member :ictinited by seid cern and ineens i'o'r severnlly engeging and disengeging s fnd 'friction nien'ibers l'rom seid reciprocating ineniber.

14. .in si peper-cutting machine the combination with n, clmnp-bnr, o. roclesheft end connections between seid clamp-ber end seid rock-shaft, ol :t l`riction-cylin(ler secured to seid roeleslml'l', :i plurality oif 'friction members mounted on seid cylinder in L irictionnl engagement therewith, n yowcrdriven. shalt lutvilnr it com mounted thi-troon, e reciprocating member actuated by seid een), n ineens for causing seid friction inem-- bers to engage seid reciprmxnting member consecutively el'ter the descent ol' the clnmpbei' hos been.nrrested by coming into Contact with the peper. Y

15. ln n pn )oncoming machine the combination with t 1e knife-ber, ol :i crznik-slntil'., e crunk thereon,. connections between seid crank end seid knife-lun', e power-driven shaft geared to said crank-shaft, :1. elinnp-lntr, ai rocksbocft, conmwctions between said elemp- `ber sind seid rock-shalt a cznn upon seid po\.ver -driven shalt, a. reciprocating?T nieniber actuated by seid cmu, a lrictionsil connoctirui between seid reci proce-ting member and seid rock-sluil't und ineens for operatively engagin g end disengeging seid fric-,tional connection.

16. In e voeper-cutting `inechine the combi.- netion with e knife-ber, n crankshaft, e crank thereon, connections between seid crank und seid knife-ber, of a power-driven shaft geared to said crenk-sheft, :t clamp-bin?, a. rocleshsft, e plurality ol' friction. devices connecting seid reciprocating member and iock-siiui"t, connections between clo'inpbnfr end seid rocleslutiit.

i7. .lin n piper-cutting machine the combine/tion with n. pow'er-e't .lated cutter :fer mid e n(nver-mftueted clamp-ber, oil e subelenip `lever and said Subcla-mp move in. the seine direction.

i8. in e pnpencutting machine the eonxbination with e 'flat table supported by a suit zible framework, of e cutter-ber and elempber operatively mounted across the forward end oi seid table, e back gage mounted on seid table to the rearof said clamp-ber, screws mounted et find parallel to the longitudinal sides ol seid table, n yoke secured to seid back gage in threaded engagement with said screws, e transverse shelt mounted on the rea-r end olt seid trible in geared connection with seid screws, e. shaft in geared connection with seid transverse shaftcxtendiiiigbeneeth seid table to tlm'lrontofseid 'nmehine and a hund-wheel on seid lest-named shaft.

'19. ln @paper-cutting machine the combination with n shaft adapted to be continuously driven, of e cutter-ber, actuating mechanism for seid cutter-imi', e clutch adapted to eonneet seid eontinuously-driven shaft with said actuating mechanism, e. weight pivotelly mountwl on e r'embcr driven by seid clutch und 'ineens :tctuetee by said weight to throw seid clutch out ol engagement et e predetermined point in the revolution of seid member.

2l). ln n mper-cuttiner machine the combination witli the cutter-ban e crank-shaft, cranks on seidshaf t, and connecting-rods between suid cranks and said cutter-ber, oi e contimwusly-driven shaft, geared connections between seid continuously-drivcn shaft and seid crank-shaft, e clutch between said contimiously-driven shaft and. seid geared connections7 e weighted arm unted concentricelly with an element oi seid reared connections, ineens on seid element adapted to ,lift seid weight during half' a revolution of said element endperinittin r said weight to drop away from seid ineens e ter it has passed the highest point in its revolution and ineens engaged by seid weight during its descent, to throw seid clutch out of engagement.

21. In e papercutting machine the combination with n cutter-bar and a crenk-sheftfor operating seid cutter-ber, of e continuously driven shaft, en intermediate shaft geared to seid crankshaft-and to n clutchineinber 'on seid continuouslyfdriven shaft, of e Weighted erin onv seid intermediate shaft, a lug secured to said in ternediete shaft adapted to engage seid weighted arm during the ascending half oi itsrevolution and permitting it to drop during the descending half ot' its revolution by gravityF sind means en raged by seid erin to throw sind. clutch out o. engagement.

IOO

v 22. in a papencutting machine the combination with the cutter-bar and crank-shaft adapted to operate said cuttenbar, of a powerdriven shaft, a clutch member mounted on Said power-driven shaft, geared connections between said clutch member and said cranlrshaft, a frictiombrake and means for auto-l matically unclutching said power-driven shaft from. said geared connections, and throwing said friction-brake into action to ar- A rest the motion of said crank-shaftat -a preby theengageinent of the disengagement of the other.

determined point in a revolution.

23. ina paper-cutting machine theV combination with the cutter-baracti1ati1ig mechanism, of a friction-clutch composed of two members one of whichis held against rotation, l the other being secured to a rotatingl element of the cutter-bar-actnating mechanism, and means for automatically engaging said clutch members to stop the machine.

' 24. In a paper-cutting maf-,lune tinl conzbination with a cutter-bfar-actuating mechanism, of a friction-clutch composed of two members, one of which is in geared connection\with said operating mechanism, the otherbeing held against rotation, and .means for automatically engaging said members to sto p the machine.

25. In a paper-cutting machine the combination with a cutter-bar-actirating mechan-` ism, ofadriving-sl1aft and a stationary shaft each carrying friction`-clutch members in geared connection with said actuating mechanism, enacting clutch members rotatably fixed upon said driving-shai`t and said stationary shaft respectively, and .means connecting said enacting clutch :members where`v one is accompanied by 26. .in a papeiwutting machine, the co1ubi nation with a power-actuated cutterbar and a clamp, of engaging means between saidcutter-bar. and said clamp, iihcrcby said clamp is raised by said cutter-bar, and lowered by gravity in Contact therewith, and a friction mechanism ada ted to act upon said clamp-hal' before am during the cutting op` eration.

27. in a papencutting machine the combination witn a clam i-bar of a downwardl T- projecting` rib ext-em ing along the iront edge of lits lower surface and an elastic shoe be hindsaid rib. f

2S, ln a paper-cutting machine the combi.- nation with a table, of a backgage extending transversely.across said tablemade in a-plurality of sections adjustable relative to each other, a transverse yoke secured to one of said sections, and means for operating said yoke forward and backward. y

29. In a `:iper-cutting machine,thc combination wit i a power-actuated .knife and clamp, of means for automatically causing the clamp to descend in advance of the knife, a friction mechanism adapted to cause the clamp to exert pressure upon a stack of pap after its descentlhas been arrested, means for releasingr the pressure upon the clamp ai'- tor the cut has been completed, and means permitting said clamp to remain in contact with the ieperA until alter the cutting edge of the lni e has risen above the stack on itsv return A stroke. v V l .In testimony whereof I have signed my name to this specification in the presence of two subecribinr witnesses.

JAMES G. HARDIF. Witnesses Uno. E. HARDY, Casin C. N nwKaAN'rz.

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