US815905A - Duplicating apparatus. - Google Patents

Description

PATBNTED MAR. 20, 1906. B. A. COX.

DUPLICATING APPARATUS APPLICATION FILED DEC. 23, 1904 3 BHEETSSHEET 1'.

v I wiktmeoae'o 331 h GHUW PATENTED MAR. 20

X 0 G A Rm 0 5 l 00 0 N .DUPLIOATING APPARATUS.-,

vAPILIGA'L'ION BIL BID 13110.23, 1904 3 SHEETSSHEET 2.

'wbawfoz No.'s15,905. I

PATENTED MAR. 20, 1906.

A. COX. DUPLIOATING APPARATUS.'

APPLICATION FILED DBO. 23, 1904 3 snnnws-saizm s.

UNITED STATES PATENT OFFICE.

EDWIN AUSTIN COX OF LONDON, ENGLANQ ASSIGNOR TO A. B. DICK new anduseful Improvement in Duplicating Apparatus, offwh'ich the following is a specification? 1L This'invention' relates to duplicating appa 'ratus,' and particularly to that type of such 'drurnflfaving a foraminated 'stencilcarrier extending overa portion of its (periphery and .upon'which the inking-pad an 7 aresecured. g Theojbject of'the invention is to increase the efiic'iency of machines of this type in several' respects hereinafter noted; One offhese respects: concerns the means for feeding the impression 'paper to the stencil eicarryin 'drum'fto recelve the print from said stenci Under the present invention means are emloyed wherebysuch paper may be fed by and, as; is'usual in machines of 'this type, or

automatically and as the result of the operation of. the stencil-carrying drum itself. For:

the latterpurpos'e there isempl oyed; preferahly inponjunction with thepressure roller which c'ommo y underlies the drum, an automatic paper feeding wdevice which may be and which. when inoperative position coacts with thefoi'ward'edge of. the top sheet of a paper pile to feed the same between the stencilj-ca g. dmm andthe pressure-roller in orderlt atthe slfirface thereof may receive the impression said drum.

. fy-Qtlil feafuresandadvantages of the appa Q i'm is In d h ill trat ng a preferred al'jfrom the fol owing descrip- :fdrrn iof thei inyentlon, Figure 1 1s a side elecan of the duplicating; apparatus,- certain f.superfluouszstiuetnral elementsjthereof being x2 isa' 1 central vertical section ed- 'Ei akefnf on the inc-indicated by the arrows in :F' .13'is sin-enlarged detail view look- 1 froin'fthevlower end of the roller ,-.J,th'e arm E being jre- U nfenlar ed detail .view

Specification of Letters Patent. Application filed December 2811904. fieriallloi 238,094.

stencil-sheet thrown to operative or-inop erative position from thestencil carried by" ZOMLANY; or c iioAeo; ILLIN S O-QRPORATEN OF ILLINOIS I "{;IUP| IQATING APPARA,TUS=- I I Patented March '20, 1906.

struction of the mechanism for operating the feed-board. Fig. 6 is a horizontal section taken on the line indicated by vthe arrows in.

Fig. 1.. Fig; 7 shows in cross-'secti'ona portion of the apparatus shown in Fig.- 2, butv illustrating what may be termed the sec- 0nd stage in the feeding of the sheet from the pile' Fi 8 'isan enlarged detail view illustrating w at may be termed'the third stagein the feeding f such sheet. Fig. 9 is a detail view illustrating'the drum-contained 'paper stop in sto ing' position. Fig. 10 is an enlarged detai illustrating a modification in the coi'istruction of the sheet-feeder.

11 is a transverse section of the mechanism shown; in Fig. 10, on the line indicated by the arrows in said figure. Fig. 12 is an enlarged detail of the pressure-roller, sheet-feeder, and sheet illustrated in Figs. 10 and 11; and Fig. 13 is a fragmentary side elevation showing the mechanism for-elevating and depressing the pressureroller.'.

' .Referring to the drawings, in which similar letters-denote corresponding parts, A designates the base of. the machine carrying the frame, which com rises mainly the side members A A he drum B is loosely mounted upon the shaft 17, secured to the side members of the frame by set-screw 6 or other suitable means. The heads of the drum are here shown as connected by the perforated stencil-carrier 15 over which ex- 8 5 tends the inlc-pad b the stencil-sheet b bein secured outside of-said pad by any suit ab emeans.

The inner face of each of thedrum-heads is provided with a cam-track c, with which ,coact sheaves 0, carried by the shaft 0 of the ink-distributing roller C. Said shaft 0 is v journaled in segmental arms 0 pivoted at t to radial arms 0 formed integral with or secured to collars c", which in turn are secured 5 to the shaft 1) by set-screws c or other suit able means. Coil-springs 0 connect the dis tan." ends of said segmental arms a with said collars,exertingatendenc to draw said dis--= tant ends inwardly tower the center of the 00- drum, and consequently toforce said ink-dis tributing roller C outwardly into contact with the stencil-carrier b an'dflits' sheaves c r into contact with said cam-track 0'.

D D' designate pa er-stop cams re ea 1015 I uporithe inner. faces otthe'heads of the dr'u .3. e v

13.; d designates the paper-stop. This is ,earried by vertical arms (1, havin slots d",

through which the shaft 1) exten s, and at their upper ends sheaves d coacting with said cams I). A cross-rod (1"; directly underlying the shaft 1), connects the paper-stopsupporting arms (1'. d designates a catch carried bv said shaft 1) and movable to operative and inoperative positions relatively to .said cross-rod (1 When in operative position, this catch. elevates said cross-rod, and thereby correspondingly elevates the supporting-arms (Z of the paper-stop. In this position the sheaves carried by said arms do not coact with the paper-stop cams l), and said step is therefore in inoperative position. To-bring said paper-stop to operative )osition, the cross-rod at may be released irom the catch, (see. Fig. 9,) whereupon said sheaves d'hwill coaet with said sto )-ca1ns l) in order to alternately raise and lower the paper-stop (l. The reaction of said cams I) and sheaves (1 results in the elevation of the paper-stop (i when that portion of the drum which is covered by the stencil is passing in contact with the pressure-roller wlnch underlies thodrum. (See Fig. 2.) As the covered portion of the drum passes the impression roller the curved portions of the cams l) cease to coact with the sheaves d, whereupon the stop-carrying arms (1 are free to descend so as to move the stop (Z to paper-stopping position. In this position, Fig. 9, it directly overlies the pressure-roller in order that the sheets may be fed against the same and there brought to a rest until the covered portion of the periphery of the drum comes in contact with the sheet and carries it through the machine under pressure from said pressureroller. In order to guide the stop-carrying arms d in this vertical movement, I prefer to employ guide-arms 0, extending between the pivotal points (1' and the )oints e", where said arms are pivotally attached to said stopsu )porting arms (1.

t will be understood that the paper-stop- )in device. above described is intended to )e released (by means of the catch (i only when the nnpression-sheets are to be fed b hand. Under this condition the feed-boar shown in thedrawings and presently to be de-- scribed is rearranged in order that the sheets passed over the same. may be moved substantially on the same )lane as the point of (.011- tact between the drum and pressure-roller, so as to abut against the paper-stop d when the same is in its lowermost position.

E designates a rock-shaft journaled at either end in the side members A A of the frame of the machine. Secured to' this rockshaft are arms E E in the forward ends whereof is 'ournaled the shaft 6 of the pressure-roller To the arm E is pivoted a vertically-reci rocating bar G, slotted at to receive the s aft 1) and -provided with a.

'pla ined.

sheave g, coacting with a cam g, formed upon the outer face of a pinion g movin with the drum. Said pinion g is operate by a pinion g, actuated by the crank and handle 9 The shaft of said pinion g is supported by the side member A of the frame and carries in addition to said pinion a s rocket-wheel g, which through the endless ciain g transmits motion to a s rocketwheel g", secured to the shaft e of t e pressure-roller F. The coaction of the cam g and sheaveg causes the depression of the pressure-roller F against the tension of the vertieally-arranged coil-spring (shown in Fig. 1) after the covered portion of the drum has passed said pressure-roller and keeps it depressed until the covered portion of the drum again comes into juxtaposition to said pressure-roller. Also said reaction of the cam g and sheave g causes the movement of said rock-shaft for the purpose hereinafter ex- 11 II desi nate collars loosely mounted upon the shaft 0 of the pressure-roller F and on either side of said pressure-roller. To these collars is detachably secured the paper-feeder 1, here shown in the form of a hail, the ends whereof are tui ned at a right an dc to the main body, such ends being detaehabl secured to the collars lI'l'I by means of tie screws '5. The body portion of said bail is preferably provided with a rubber covering i. The collar ll is provided with a projection h, extending outwardly and almost to the inner face of the sprocket-wheel g, and coacting therewith is a clutch, whereby said collars may be caused to rotate on the shaft e with said sprocket-wheel g. In the present embodiment of the invention this clutch takes the form of a bell-crank lever h, pivoted at h to the inner face of said sproclwt-whcel one end of said lever being provided with the operating linger-piece h", the other end It being movable by said finger-piece into the path of the projection it upon the collar 11. The construction here presented is illustrated in detail in Figs. 3 and 4. When the impression-sheets are to be fed by hand, (the crossrod of the paper-stopping arms being then released from the catch (1 the clutch h is moved to inoperative position, so that the shcet-feedcr will not move with the shaft e of the pressure-roller, but will assume a stationary position below and back of said roller. This is done by grasping the finger-piece h and turning clutch member h on its pivot until its end k is carried to such a position that as gear 9 is rotated the end h of the clutch member does not en age the pro'ection it on the collar H, to w llCh one en of bail I is connected. Movement of clutch member h in the opposite direction carries its end it to such a osition that as gear 8 is rotated the end a, engages rojection ii, and thus causes collar H bail and 001;

lar H to. rotate with gear 9. When the parts are in this position, the bail I may drop by gravity through approximately a half revolution after moving above. the pressureroller past the position n which the bad is vertically disposed, the collars H H' turning loosely on. shaft 0. l

L designates a rook-shaft, which, like the shaftE, is mounted at each end inthe side inein'bers 'AA of the frame. ,ylntermediate of its ends (see Figs. and 6) it is provided with the fiatfeed-board support Z, to which is secured one end of the arm l, the other end ofsaid' arm. being pivoted 'to a -paperguide 1 in the form of a bell-crank lever, the extension .Z' tl ere fzv operating, as shown in.

Fig. 2," tOfil'GtOI'lIllnd the degree to which the automatic feeding rests upon the support Z. It isalso prov ded withperforations through which extendpinsl carried by the rock I shaftl Said feed-board is preferably provided with the adjustable end guide Z and adjustable side guide Z for. determining the position of the paper.

,M designatesa crank-armsec'ured to one endof the rock-shaft L outside the side meinbenA. of the frame. m; designatesa cam-1e; verpivoted at m to the side member A of the frame, and m designates a connectingarm having slot and-pin c'onnectionsm m with the crank-arm M and cam-lever m; The cam-lever m is designed for manual-manipulation. to throw the feed-board to operative and inoperative positions; The normal position of the parts is illustrated in Fig. 5, in- :WlllGll the cam-lever m is shown as having been moved rearwardly. This bringsjthe feed-board to a very considerable downward incline, throwing the paper-guiding extension Z to ap roximately a ri ht angle relativelyto suc board. The heetpile may now be placed upon the board, its forward edge resting against such extension 1', and the cam-lever m moved forwardly; This rocks the shaft L, moving the feed-board. to the position in which it is shown in Figs. 1, 2, 7, and 8, the forward end of the sheet pile then directly underlying the pressure-roller'F. If now the clutch h be moved to engaging position, so as to cause the collars H H! to-move with the pressure-roller shaft e, the sheet feeder I, carried by said collars H H',"wi11 be rotated around said pressure roller'1. Its operation and the result thereof are clearly shown in Figs. 2, 7, and 8, illustrating. differentstages in the feeding of a sheet from the top of the pile. Said f eeder comes in con tact with the uppermost sheet near its forward edge and tends to move said edge backward. The entiresheet is precluded from such backward-movement by the end guide I. The continuod'moveinent of the feeder I, therefore, buckles only theforward portion of the uppermost sheet, as illustrated in F 'g. 2.

' "The quantum of curvature may be determined by the pressure of the hand'upoi the top of the sheet pile, or in lieu thereof I'inay employ a detachable'pressure device, such as thatillustrated in the drawings and-comprising the rod N, the angular'downturned'ends nwhereofen in feed-board l; The continued movement of the feeder Ibrings' the forwarded e of the uppermost sheet to the'position s own in Fig- 7. At this time, as will be seen, the covered portion of the periphery of the druni B has passed on from the, point of contact with the pressure-roller'F. As the feeder I therefore moves out of contact with theforward edge of the uppermost sheet said edge falls, by reason of the elasticity of the sheet, upon the periphery of the pressure-roller F, which through the operation of the camrg sheave g, and vertically-reciprocating b'ar G will have been depressed at this stagein the rotation of the drum B.- The rotary move.- inent of the feeder I is, continued, but without feeding effect, until the same again comes I intocontact with the sheet pile.

As the forward edge of the stencil comes in contact with the pressure-roller F (said roller having" been raised to operative position topermit this) the forward edge of the topmost sheet is graspedflbetween the 'pressure roller and,

age with perforations n, formed w the stencil-covered periphery of the drum};

and. fed rearward, the printing being ir'npressed uponthe surface thereof by the ink forced through the stencil-carrier bathe ad I), and the stencil b.- This coaction is i1 ustrated in Fig. 8.

exaggerated in the d raw'ings.)

(For the sake ofclearnes's; 1, a the thickness of the sheets of the pile is much i 5 O O designate fingers carried by the rock-j shaft E, the ends thereof extending-to a position immediately over the forward edge of the sheet pile.

as the forward edge of the uppermost sheet is Said fin ers press upon-the forward edge of the pile, epressing such edge removed therefrom'b'y the'jeeder 1, thereby assisting in the separation of such uppermost sheet from the pile andipreventi ig thelateiial edges of the sheet from curling upwardly, Also mounted upon said rock-shaftE and outside the side member A of the frame is anadjust able arm. the free end whereof underlies a Y cam 0, formed on the earn-lever m. When said cam-levee thrown to the position shown in Fig. 5, the coaction of itscam 0 with the arm o'ro cks' thero'ck-shaft E -.th by depressing the armsE' E d quently the pressurefroll er mounted inthose arms.

In order to permit p. of varying thickness to be employed the automatic feedherein described, a variable spring-tension is employed in connection with the feed-board and this is clearly shown in '1. comijo automatic feedin matic feeder and eed the sheets by hand, the

with a sto p, the end of said rod being pro- -vided wit a finger-piece p To increase or diminish the tension with which the rearward end of the feed-board is pressed upwardly, it is only necessary to lift the rod p from engagement with the stop 2 and to again engage said rod with said stop y means of a diff erent one of the several notches p formed therein. v I The position in which the feed-board is shown in the'drawings is the position which it occupies when the machine is arranged for To cut out the autocross-rod d of the paper-stop-carrying armsis released from the catch (1 so that the paperstop (1 shall occupy stop ing position from the time the rear end of t coact with the pressure-roller until the time when the forward end of the stencil commences to enact with said roller. The feedboard I is removed fromthe support l and ins l and placed in the machine so that its ateral edges shall rest upon the supportingins 1', ,the rearward end being revented om moving u ward by a pin 2*. his position of the fee -board is illustrated in dotted lines in' Fig. 2.

In Figs. 10, 11, and 12 I have illustrated a somewhat different method of mounting and operating the sheet-feeder, whereby the same is driven with a continuous iisitive movement around the pressure-roller rather than allowed to fall after passing its highest point on completing the feeding of the sheet. In this modification the feed-roll S is mounted upon a shaft 8, the ends whereof are journaled in the arms 8, which in turn are mounted upon the shaft of the pressure-roller. There is a connection of any suitable form between one of thcarnis s and a gear s, driven by the movement of the drum of the duplicating apparatus in any suitable manner. For instance, this gear may mesh with a corres )onding gear carried by one of the heads of the drum, means being provided for throwing said gears into and out of operative relation, accordingly as the machine is to be used for automatic feeding or for manual feeding. The 0 eration of the feed-roll is clearly illustratcr in Fig. 1], wherein said roll is shown as having engaged with, pressed backward, and buckled the top sheet of the pile. The continued movement of the roll S brings the sheet to the position indicated in full lines in Fig. 12 and in dotted lines, Fig. 11, where it is caught. between the pressure-roller and the stencil-carrying drum and thence passed out of the machine in the manner above described.

If desired, the feed-board may be provided e stencil ceases to erases at a point dirertly under the n'essure-roller with a facing a" of rubber or other elastic material.

Having now described my invention, what I claim as new therein, and desire to secure by Letters Patent, is as follows:

1. In duplicating ap )aratus, the combination with a drum and a pressure-roller, of a rotary sheet-feeder in 'uxtaposition to said roller, operating around the same and sup ported from the shaft thereof, said sheetfeeder comprising a rod having a covering of elastic material such as rubber, substantially as set forth.

2'. In duplicating a paratus, the combination with a drum an a pressure-rollerhaving a shaft, of collars carried by said shaft, and a sheet-feeder carried by said collars and comprising a rod having a coverin r of elastic material such as rubber, substantially as set forth.

3. In duplicating ap aratus, the combination with a drum, 0 a shaft below said drum and means for transmitting motion thereto, a pressure-roller mounted upon said shaft, a sheet-feeder loosely carried by said shaft and comprising a rod having a covering of elastic material such as rubber, and a clutch between said sheet feeder and said shaft, substantially as set forth.

4. in duplicating ap aratus, the combination with a drum ant a roller, of a feedboard, a rock-shaft for so porting the same, means for actuating said sliaf t, and a )ivoted pa )er-guide coactin with said feed -board, substantially as set orth.

5. In duplicating a paratus, the combination with a drum and pressure-roller, of an adjustable feed-board and. a paper-guide coacting therewith, and means for simultaneously throwing said feed-board and said pressure-roller to o )erativc or inoperative position, substantially as set forth.

6. ln duplicating apparatus, the combi nation with a drum and pressure-roller, of mechanism for automatically feeding surcessive sheets between said drum and roller, and means for throwing said mechanism out of operative relation and for manually feeding sheets between said drum and roller, said means including a feed-board and mechanism for supporting the same in different positions relatively to said drum and pressureroller, substantially as set forth.

7. In duplicating ap )aratus, the combination with a drum and roller, of means for automatically feeding sheets between said drum and roller, and mechanism for throwing such automatic feed out of operative condition, a feed-board and means for so porting the same in one position when said automatic feed is in operative condition and in another position to adapt the same for the manual feeding of sheets between said drum and roller, substantially as set forth.

juxtaposition to said roller for autmnatically feeding sheets between the same, and a feed- I aratu's, the c0mbito nation with a drumane roller, of means 111 board for supporting sue-h' sheets, the same having a facing ofelastic material such as rubber arranged directly below said auto- 15 matic feeding means and underlying said roller, substantiallyas set forth.

This specification signed and witnessed this 28th day of November, 1904.

EDWIN AUSTIN COX.

Witnesses: I

H. D. JAMESON, A. NUTTING.

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