US931227A - Sheet-separating device for printing and similar machines. - Google Patents

Description

, v 0. SCHNEIDER. SHEET SEPARATING DEVICE (FOR PRINTING AND SIMILAR MACHINES.

. APPLICATION FILEI) NOY.19,1907.

Patented Aug. 17, 1909.

' 2 SHEETSSHEET 1.

' W/ f/viss 0. SCHNEIDER.

SHEET SEPARATING DEVIGE FOR PRINTING AND SIMILAR MACHINES. APPLICATION FILED NOV.19,19(/)7.

E; Patented Au 17, 1909 2 SHEETS- SHEET 2.

3 .5 li'J L s ,T

A7: //A I i J 4 l m/q 34 31 1 a as U 5 3e OTTO SCHNEIDER, OF REIOHENBACH, VOIGTLANJ), GERMANY.

SHEET-SEPARATING DEVICE FOR PRINTING AND SIMILAR MACHINES.

, Application filed November 19, 1907. Serial Ni); 402,899.

Specification of Letters Patent.

Patented Aug-(g0 1309.

To all whom it may concern:

Be it known that I, OTTO SCHNEIDER, subject of the German Emperor, residing at iteichenbach, Voigtland, Germany, have invented new and useful Improvements in Sheet-Separating Devices for Printing and Similar Machines, of which the following is a specification.

The object of the invention is a device for separating the sheets of a pile of paper for the purpose of delivering the same separately into printing-or' similar machines which the apparatus is connected to. In performing this work, the top sheet of the said pile is taken up at one corner by .the action of a sector-shaped air-sucker and rolled up along its edge, a strikingdevice being pressed at the same time againstthe underside of the sheet thus striking off other sheets sticking on the first one. After this the sheet is released by the sucker and seized by another air-sucker approaching the under side of the sheet and carrying it to a delivery-device.

There are some constructions of paper feeding devices in which the sheets of paper are lifted up by a suckin pipe of the length of all the breadth of the paper having alarge number of holes. Apparatus of this kind have many disadvantages, which are avoided-by my invention, in whichthe whole force of the sucking airis' directed against one point, 2'. 6., the corner of the paper-sheet. Naturally it is easierto seize a sheet at one corner than at a long edge. The sucking mechanism being sector-shaped, the lifting of the paper takes place in an equal and slow manner. Sheets of paper sticking to the top "sheet are removed by a striking device whic together with the sucker are operated by the same mechanism.

p In order that the invention may be clearly understood reference is made to the accompanying drawings in which an embodiment 'is represented by way of example,and in which:

Figure 1 is an elevation of the new paperseparator in connection with a sheet-delivery device, Figs. 2, 3, and 4. are side-elevations showing the parts of the device at difierent- I positions; Figs. 5 and 6 are frontelevations of Figs. 2 and '3 respectively. Figs. 7 and 8 are a front and a side elevation of the striking device in an enlarged scale.

All the separating mechanism is arranged on a frame 1 which, provided with pulleys 2 on each side, is displaceable laterally on rails 3 of a stationary frame 4. This is fixed to the printing or simi ar machine and carries a revoluble bell-crank lever 22 the one leg of which is supplied with a tter frame handle 21 and the other is supplied with a link 23 connected to the movable franie ll The pile of paper 7 is lying on a table 5 -which is connected by a pair of screwspindles 6 to the movable frame 1. To one end of this frame a lever 8 is hinged lying with a roll-9 against a cam-wheel 10 attached to a rotating shaft 11. A second cam-wheel air-sucker 16 to the other end of the lever 8.

.At the outer side of the sucker 16 a striking mechanism 17 is revolubly mounted. As

shown in Figs. 7 and 8, a striker l7, whiohis provided with india rubber 31' at one side,

can turn on a pivot 32. This pivot is connected to a journal 33, which revolves on a forked bearing 3% attached to the slotted lever 13. On the pivot 32 a turnable sleeve 36 having a projection 38 is mounted and held by a eellar 37 in itsposition. Between the projection '38 and the striker 17 a spring 39 is attached tending to bring together both these parts, until they touch each other by stops. One end of a second spring 40 lying around the sleeve 36 is connected to the collar 37 the other, to the striker17. The spring tends to move the striker 17 away from the sucker. The link15 has a lengtheningpiece' 15, to which a ratchet Al is hinged. This ratchet is made to lie against a step 42 at tachedto-the' piece 15 and with its end to touch aprojecting lug 43 at the projection 38 of the sleeve 36. At that side of the movable frame 1 whichis shown in Figs. 3 and 4' on the left, a slide18 is provided in which a sucking pipe 19 can bemovedagainstthe under sideof the sheet .20 ;of the pile of paper 7. The pipe is connected as well as the sucker 16 by means of a hose. or movable pipes to pneumatic means not shown on the drawings.

The operation of this device is as follows:.

The air sucker 16 dropping down by the movement of the two cam-wheels 10, 1-2 and the levers 8, 13 on one corner of the top sheet of the pile of paper begins to suck that sheet presses thestriker harder-against the sucked ing. on the top up by so .far back that: the upper end of the pro.

grasping the front-edge of the sheet between rollers 22'27 that deliver the sheet to its oeri means for drawing away as shown in Figs. 2 and 3. The furtherm-vv tation of the cam-wheels 10,.12 makes the sucker 16 roll with the sucl ed'sh'eet along the edge of the pile and the sucked sheet is in this manner lifted up. When the sucker has during its movement been rolled up half way, the ratchet 41 seizes the projecting lug 13 and by aid of the spring 39 turns the end of the striker 17 with its india rubber face against the sheet of paper which is lifted the sucker the circumferential velocity of the sucker-end being reater than the velocity of the bearing 0 th 14. Since fromthis moment the ratchet 41 moves more quickly than the projecting lug .43 .rotates, the spring 39 is extended and sheet of during t the striker makes a frictional movement and by this-friction removes any sheet 20' st'i'cksucked sheet 20 as shown in Fig. 3). The parts continuing their movemcnts. the end of the lengthening piece 15 (see Fig. 7.) presses down the striker 17 and turns it around its bearin parts 33, 34, thus moving its frictional emf downward. The sucker 16 having nearly arrived at-the end of the slot l4,.t.he striker has been pressed aper. As this sheet moves upward jecting lug 43 reaches the lower end'of the ratchet .41, .whereupon the striker reooils into its normal positionby the action of-the spring .40. Now the link with all the striking mechanism is lifted up by the action of the cam 12 and the sucker pipe 19, which remained; away from the pile till now, as Figs. 1-3 show, does enter, followin the slide 18, under that separated sheet 20; yadmission of air into the-sucker 16 the sheet drops down and is lying on the sucker pipe 19 now, Fig. 4. To loosen the sheet over its whole surface, air is'blown under it in any known manner. The pipe 19 which sucks that separated=sheet now carries the same to a device tain place nea-rlthe cylinder of the printing or similaranachine. This'delivering device is not;pa2t:"ofifthe invention; it consists of -a frame-.21 hinged to the ends ofthe movable framel tha't'can move laterally with the same. Rollsi22'..are revolubly mounted in that-frame 2'1 and can-be rotated hytoothed wheels 24, 25 which a swinging rack-bar 26 is acting upon. Other rolls 27 are attached to the one leg of bell-crank levers 28 mounted' to turn on axes 29,:which are connected by special hearings to the frame 21. On the. other leg of the bell-crank levers rolls 27 are-provided, against which a cam 28 is working. This cam 28 and the rack-bar 26v are moved by mechanisms that are driven by the shaft 11 and which are not shown on e sucker in the slot e.rolling movement of the sucker ism periodically enterin against theau'nder 'removalof the striker.

the drawings. ()11 one pair of the rolls 27 and 22, which have a metallic surface, electric contacts 29 connected to a source of current' are 'slidingL If by chance no sheet of paper is delivered between the rolls 27 and 22, these rolls touch each other and close the electric circuit, whereby the printing machine can be stopped or a signal given.

During the operation of the apparatus the table 5 with the pile of paper is screwed upward corresponding to the-removal of the sheets and kept at the .right heig'ht automatically. inuany known manner..

To make the drawings, better understood all the driving mechanisms for the spindles 6, the cam- wheels 10, 12, the sucker pipe 19, the rack-bar 26, and the levens-28 are, unessential for the scope of the 1nyention, not shown in the drawings.

1 do-claimand desire tosecnre by Letters. Patent; ig.

1.. In. devices of the type :deawibed the combination of a frame, a table as: mpile of paper, an air-sucker, means for dro ping down said sucker on a corner of sai pile and for giving it a rolling movement along the edge of said pile, anda striking mechanism periodically entening against the under side of thelifted .sheet ofxpaper.

2.1m. devices of .the typedescribed the combination of a. frame, a table for a pile (If-paper, an airsucker consisting of a sectorshaped art with an air-sucking channel at one. en means for dro sucker on a corner of saidpile and for giving it a rolling movement along the edge f said iie, and a strikin mechanism periodical y entering against t e under side of the lifted sheet of paper. I

3..In devices of the type described the combination of a frame, a table'for a pile of. paper, an airsuckerpmeans for dro ping down -.sa id sncker. on .aucurner of. pile and for. giving its. rolling movementalong the edge of sa1dpile',;pnd a striking mechans ism periodicall enterin against the under. side oftheli ed. up s eet of paper, and

the sheetafter re; moval of. the striker for delivering. :it :into the printingor similar machine.

4. In devices of the type. described the combination of a .frame,.attalnile for a pile of paper, an air-sucker, means for dro ping down said suckeron a'cqrner of sai pile and for giving it a rolling --inovement along the edge of said pile, and a striking mechanside of the lifted. sheet'o paper, and a sucking piper periodically .xentermg. against the under Is'ide of the'lifted sheet ofpaper after 5.1n devices'of the type described the combination ofa frame, a. table for a p-ile of paper, a lev'ecr hinged to-the frame, a camwheel acting u' on' said lever a'second lever adapted to osclllate on the ing down said rame and having a slot, another cam-Wheel Working against said second lever, an air-sucker, a link connecting the end of said first level to said air-sucker which is movable in said slot of the second lever, and a striking mechanism. i

6. In devices of the type described the combination of a frame,' a table for a pile of paper, serewspindles connecting said table to said If nine, an air-slicker, means for dropping down said. sucker on a corner of said pile and for giving it a rolling movement along the edge of said pile, and a striking mechanism periodically entering against the under side of the lifted sheet of paper.

'4". In devices of the type described the combination of a frame, a table connected to said frame, rolls attached to said frame another frame hearing on rails said rolls, means for moving said frame laterally on said rails, an air-sucker, means for dropping down said sucker on a corner of said pile and for giving it a rolling movement along the edge of said pile, and a striking mechanism periodically entering against theunder side of the lifted sheetof on )er. V l. l.

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