US44917A - John hunt - Google Patents

Description

invented a certain new and useful Machine this specification.

' the delivering-roller has commenced to move i from a pile and to feed them the detaching and lifting means, whereby the sheet is separated from the pile not only along its front edge, but at one or more other points,

lifted, whereby the sheet is seized on its uplifted, all except the upper sheet are returned to certain novel means for raising and lower- UNITED STATES PATENT UFFICI-3.

JOHN HUNT, or New Yoan, N. Y., Assiejon 'ro niaisrnpivtzANn eictmen D. sHAnr, or SAME PLACE.

APPARATUS FOR FEEDiNG PAPER To PRINTING-PRESSE-s,-

Speeiiieation forming part of Letters Patent No. 411,9! 7, dated November 1, 1864.-

To all whom it may corcern: Be it known that I, JOHN HUNT', of New York city, in the State of New York, have for Feeding Paper to Printing-Presses 5 and I do hereby declare that the following is a full and exact description thereof.

The accompanying drawings form a part of p l Figure lisa side elevation. Fig. 2 is a longitudinal section correspondin, to Fig. l, the machine having just delivered a sheet and commenced preparing to take up and deliver the next. A.

The remaining figures are corresponding sections through the principal parts, to show their relation at different periods.

11i-Fig. 3 'the suetioatubesere pressed down upon the paper. theact of rising with asheet Fig. 5 these tubes have released .In Fig. et these tubes are in i of paper. In i the sheet and l itjaway. i Similar letters ot` reference indicate like parts in all the figures. Tints are employed merely to aid in distini guishing the several parts. A t-hin red line indicates the sheet.

VMy machineis adapted to take the sheets singly at a proper time tothe printing-press. Only a portion of the feed-table of the printing-press is represented. The machine is geared tothe press.

My improvements relate to a duplication cf so that the risk of feeding two or more sheets at a time is lessened. They alsorelate to certain novel means for acting on the sheets after' they are detached from the pile and per face only, and in case two or more are shaftB, l l

B2 to the horizontal framed), so that the'lat- -02 is smaller than the Wheel C',

to the pile' in good order. 'lh'ey also rela-te ing the table on'which the pile of paper is supported. They also relate to certain novel means of'guiding the table in a vertical motion and 0t`.iusuring a horizontal position of this table at all times. i

To enable others skilled in the art to make ingtheliftingmotion.

, n. Only and use my invention, I will proceed to describe its construction and'operation bythe aid of the drawings and ol' the letters of reference denoted thereon'.

A Ais a fixed framing,on whiclrall thcparts of my machine are 'mounted and guided.' Bis a stout shaft connected to the printingpress by gearing (not represented) v`so that the sha-ft B makes l one revolution for each sheet ot' paper which is required' by the press. On the near end of the shaft Bisacrank, B2, and

on the other end is a crank, B', (represented,

in Figs. land 2,) set nearly at right angles to the crank B2. A connection, b', connects the cra-nk at the farther side of the'4 machine to an arm on the rocking shaft O, so as to rock the latter at each revolution of the crank- A. eo'nueetim ,b?. connectsItheerank ter reciprocates horizontally forward and backward on its guides a a at each revolution of the shaft B. The rocking of the shaft O elevates the uppermost sheet of paper and holds it above the pile without moving it horizontally, and the recprocating motion of the Aframe l) introduces suitable parts between the sheet and the remainder of the pile. The shaft C carries two wheels, C' and GZ. lTo the periphery of i the former are attached the ends ot' two straps, M' and N', which pass over pulleys in the top ot' the framing A and descend to the bellows M and N, and are adapted to operate them. These bellows are mounted, respectively, in slides M2 and N2, which slides are adapted to move vertically in suitable ways in the framing'A. These slides are operated by straps M3 and N3, Which pass over pulleys in the framing, as represented, and are attached to the wheel C2. This wheel and is of nearly elliptical form, as represented. j Their arrangement, as described, causes the bellows M and N tobe both expanded simultaneously before the slides in which they are mounted coinmenceto lift, and to expand further dur- They are provided each with a system of vertical pipes, through which the air is drawn when thebellows are expanded. The bellows N draws air up through the pipes through these pipes, beeausetheiroflice is to retain against their lower ends the topmost a very little .air is actually drawn in relation of the wheels C and (J2, which at this sneet of paper, causing it to adhere thereto by l d and the clamps E. The means for conveythe pressure of the air while they rise. They l ing it away then come into action atthe front are, therefore,so nearly stopped up by the presedge and 'commence to draw thc sheet torl ward, while the clamps E, at the rear edge, little air linds its way in. That little is disl by pressing down upon the pile, prevent any charged at the top of the bellows during the i sheet from being moved which has not been closing motion of the bellows, which motion, lifted and divided from the pileat the rear as will bc readily understood, takes place duri edge as well as the front edge. It follows that ing the descent. The trame D carries a broad in case I chance to litt two sheets at 'the front piece oi' metal, d, which is very smooth on its edge, only the uppermost sheet of the two is upper surface, and is by the motion of D indrawn forward and fed to the printingfpress, terposed under the front edge of each sheet ot' because the lowermost otA tho two is held by paper as soon as it is Well lifted. The recip' the device at the rear edge. Two sheets canrocating movement of the frame D, which efnot be delivered at once, except in' the very l'ects this interposition, acts throughthe conrare case of two chancing to be lifted at both ence of the sheet ot' paper that only a very nection D', which is on the farther side of the the front and the rear edge at the same time. machine, and rocks the larm E' and shaft c, L is a table, o1. whichvthe pile of paper is and consequently the broad holding clamps deposited and gradually lifted to compensate or lingers E. rlhese latter are consequently forthe removal ot' sheets from the top. The introduced under the sheet at its rear edge at weight of the table and of its load rests on the the same time that the plate (l is introduced bent lever O, which turns on the shaft 0 by the under the sheet at the front and pressed upon agency of the chain l). rIhis chain l) is slowly l l l the remainder ot the pile.

G is a small roll, covered with rubber or the of the machine. At each revolution ot' the like. lt is rotated by the belt H from the shaft B, one sheet ot' paper having been repulley I. rlhis pulley is rotated by the belt lnnoved from the pile, the remainder ot' the pile J from the pulley B3 on the shaft B. l is raised by a very slight turning of the shaft `The frame K is adapted to raise and lower l Q through the locking of'thc wheel-*b* (indithe roll G und pulley G without disturbing cated by dotted lines in Fig. l) into the wheel i s rotary motion. lt supports the bearings Q during a small portion of the revolution of' ot' the roll G, and is hinged to the iiXed frame 1, B, and the turni'ngof Q by winding the chain A by hinges lo at the back side. Its front end l l turns the bent lever O and raises the table rests on cams b on the shaft B during a por- L equal to the thickness of theshectof paper tion of each revolution, but after the sheet of removed.

paper has been raised by the suction-tubes m. Instead of a single gear-wheel, Q', a' train ot' n, and the shuttle or dividing-plate d has been g gearing .may be employed, and some ofv the introduced under it at the front edge and the wheels may be changeable altter the manner holding-clamp E at the back edge, the cams b of ehangcwvheels in a lathe, so as to vary the allow it to sink down so as to bring the roll G l motion to adapt the table to rise with proper down upon the loose sheet of paper by pressspeed for ditterent thicknesses of paper. The, ing it between itseltandthe piece or plate d. pawl R retains the wheel Q', or train ci' The roll (l is made of rubber or analogous wheels which it representmbut whenever it material ot' a soft and strongly-frictional char- 'l is desired to lower the table L to supply more actcr, and moves the paperl forward with cerpaper it is readily effected by raising this pawl tainty and promptitude, provided but one while the tooth b3 or b'L is out of gear with the sheet is so embraced, and in case two sheets train.

chance to be so embraced the device at the Additional mechanism(notrepresented)inay rear edge holds the under one and prevents be supplied to control the descent of the table it from moving, and the top one moves for- Landto adjustitsheight on commencing again :ward alone. lt may be observed that the to work. The table L should maintain a tubes m and a relax their hold on the sheet strictly horizontal position as it rises and of paper immediately before the roll G sinks. 1 attain this end and also guide it touches it, so that little resistance is offered vertically by hinging to its edge strips of to its motion. rlhis is due to the form and board, which fold upon each other somewhat like thc tblding parts of the familiar musical juncture lift on the bellows M and N very slowly, while they lift on theslides MlA and may be provided ouali of the. four edges, cr N rapidly, and thus'close'the bellows 'and only on' two o'r three`edges. I have repre'- relieve them from their vacuum. It will now sented them on three edges. Common buttbe understood that the sheet is lift( d by hinges 'v w connect three edges ofthe table suction,77 generally so called-that is to say, to the outer edges of three boards, Y W X. it is taken from Jthe pile ol" paper by its ad- Hinges of, wf, and a" connect theinner edges ot' hesion 'to `the tubes m and a, in which a parthese boards V NV 'X with the inner edges ot' tial vacuum is formed, and, by the opening of similar boards, V W X', lying directly beh-.w the bellows M and N, it is so lifted, not only at them, andV 1'-,iniilar hinges, o2, wz, and .1.1, again its front edge, but also atits rear edge, and it is l connect thtA other edges ct' the, boards Y', W',

permanently divided trom the pile by theplate l and 2x either to a further continuation of the wound upon the shaft Q during the working instrument known as the accordion. They' series of hinged parts or to a fixed portion of the framing A. In. either case the table is free -to rise and sink by thcboards turning on y their'hinges. The-boards have parallel edges," andare of uniformwidth.` vThe hinges' are well iitted, and compel a-'stri-ctlyvertical motion and a horizontal position of the'table. K at all times.`

I am aware that'it is' common to remove `sheets from a pile -by producingaJ partial vac,- num in smallgfpiipjsliixressedrdovv-n4uponthe sheetssuccessively, and that machines intended to perform all the useful 'purposes of mine have been introduced with some degreeA I of success; but I believe that mine operates their proper order through' the connections.

represented.- The vertical tubes m descend uponthe pilelof paper (which pile is represented in the drawings -as very low) and press their lower ends upon the upper surface of the .upper shei t. 'The bellows M now partinll y open and form a parti-.il vacuumjn these tubes im and-n. .Next the tubes m commence'.`

` to rise. The pressure of the air 'beneath tends to hold the front edge of the uppermost Y sheet tightly up against the ends of the'tubes m and to -compel it to rise. with it but as thereis onlv a litt-lc airin the very thinspacer.

between` thetopmost sheet and the next, the elastic expansion of this -a-ir is only sufficient to raise the sheet a small distance, and although the flow of additional air inward'from. the edge ot the'pile to perfect the separation of this sheet from the pile is "rapid, it sometimes happens that the front edges oftwoor more sheets may chance to be thus taken-up at the same time. Let us suppose two sheets to have been Ithus unintentionally taken at the front edge andthen see' what has been meanwhile -takingplace atthe backedge. We find i that aprecisely similar' operation has been' there performed by the tubes n and bellows N and that the rear edge has been also lifted. But a similar accident-has not probably ocl cured there, and we iind that the uppermost sheet alone' has been taken up at the rear edge.

So soonas the tubes m and n, with their attached parts,.have -lifted the front and rear edges'to a sufficient height, the plate d is introduced under the front edge and the-clamp 'BunderLthe-rear edge.l Next' ,they advance 'ffartherii1 `ward`,"'the; clamp E presses down np'onithexrear of the pile, the bellows M and N partially collapse so as to allow the sheet @to be easily pulled away fromthe tubesm and a, and therollG drops down and seizes the two sheets which have been lifted at the front edge. The roll G by its friction immediately 'commences to remove the topmost sheet, but

not to remove the next sheet, because the next sheet is -held beneath the lclamp E at the rear edge. Thetop sheeton being carried forward by the friction of the roll G is delivered upon. the feedtable of the printingpress and is -thence'delivered into the press to be printed and removed in the `ordinary manner. So soon as the uppermost sheet has been fully delivered, the roll Grises, the clamp E relaxes its hold, and both itself and the plate d are moved away. The sheet which had been acddently lifted' at the front. edge and retained by the clamp at the rear edge now resumes its original place on the pile, and the tubes m, -and n descendjhnd `cause it to'adhere and be lifted and removed properly, like'its predecessor. In case a sheet is lifted properly, at the front edge while two are by accident lifted at the rear edge, only the one which is lifted at the front edge will be removed, because the other will be below instead 'of above the plate d, and consequently will not each sheet is removed the shaft Q is turned a very little, and chain P taken up and the lever O turned a very little. The effect is to lift the table L a space equal to the thickness of the' sheet of paper removed, and when the pile is,

lows the parts to resume their places and a new pile to be placedon the table.y As the tablel rises or sinks, the boards V-V and W W', allowing only a motion around their axes, the table L cannot move or incline forward or hack, .but must ,move vertically and maintain a horizontal position.

1 Some of the advantages due to certain featurescf my inventienmay-be separately enumerated, as follows z,

First. By reason ot' my employment lof the rear suction-tubes, n, and my clamp E, inde. pendently of the tubes m and the parts corref spending therewith, I am able to better insure the delivery of only one sheet of paper atatime,

because, iu case two or more sheets ot" paper should by chance be lifted to be taken off at rear edge. It is rare to have a 'similar acci. dent occur in the independent mechanism' at the two edges at the same time, andmy ma- `chine will, by'reason of these devicesat the morethan one sheet at a time.- It maybe remark'ed that the. duplication of the sets of vacuum tubes m and n may be carried still further, if desired, so as to have three 'or more sets of tubes acting on different.4 parts of the. f

sheets with retainers corresponding in function to my clamps E, to retain at each point all .f

convey it away without requiring any other be subjected to any action of theroll G. As

consumed a removal ot' the detent or pawl althe'front edge, all except the top one would .y be held by the clamps or retainers E at the rear edge, very rarely if ever feed lforward 1 am able to lift the table L at a proper rate than a vertical movement in the suction or l vacuum devices. In ordinary machines-of this character the suction-tubes are required to move forward and drag the sheet along a certain distance, and the hold by suction is villy adapted to perform such a function and is liable to slip.

Third. By reason of my widelyseparated4 teeth. l)2 b, wheel or traih ot' wheels Q, pawl R, chain P, and lever O, or their equivalents,

and to lovrerA thc vsaine with great facility, as required. It may be observed that the teeth b2 may be duplicated by inserting others in suitable holes, (not represented on the periphery of the Wheeh) so as to increase the number of rates at which the table L may be raised, but the teeth b2, &c., must in all casesbe so wide apart as to leave the train of wheels Q' free at some period in the revolution, so as to allow the table to be lowered at such period by lifting the pawl R.

' Fourth. By reason of my jointed or hinged guides V and W and hinges v w, arranged relatively to the lower guides, V' W', and hinges v vz w' fwl, in the manner represen-ted,- am able tc guide the table L and to retain it always in a perfectly horizontal condition with very little mechanism and Without sensible fthe purpose herein friction. I term these parts, taken collectively, an accordion motion, because ot' its analcl gous appearance, butv there is not any similarity of function thereto.

Having nou7 fully described my invention, what I claim as new therein, and dosire'to secure by Letters Patent, is as follows:

l. ln papenfeeding machines, the suction devices n and retaining-clamp E, for the pn'rpose of guarding against feeding too many sheets at once, as herein set forth.

2. The reciprocating plate or divider d an( friction device G, or Yits equivalent, arranged relatively tothe lifting device m, so as to re-.

vertical motion cf the latter,

quire a simply `substantially in the manner and pose herein set forth. 'I y 3. In combination with a paper feeding-ma chine, a table-motion composed oi' the Widelyseparated teeth` b2, wheel Q', pavv'l E, and the chain and lever P and 0, or their equivalents, arranged substantially in the manner and for set forth.

a. The accordion-like mechanism composed of the parts V V' and W W', or their equivafor the purlents, hinged together. and adapted to guide' the motion and compel the horizontal position of the table L, substantially yin the manner and for the purpose herein set forth; JOHN HUNT. `Witnesses D. W. Srn'rson, HENRY M. CoLLrnn.

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