US1593224A - Mechanical sheet-feeding device for folding, printing, and like machines - Google Patents

Description

7 G. SPIESS MECHANICAL SHEET FEE DING DEVICE FOR FOLDING, PRINTING, AND LIKE MACHINES FiledDec. 19, 1924 2 Sheets-Sheet l Gear ,July 20 1926.

G. SPIESS MECHANICAL SHEET FEEDING DEVICE FOR FOLDING, PRINTING, AND LIKE MACHINES Filer! Dec. 19, 1924 2 shuts-Shut 2 Patented July 20, 1926.

UNITED STATES 1,593,224 PATENT OFFICE.

GEORG SPIESS, OF LEIPZIG, GERMANY.

.MEGHANICAL SHEET-FEEDING DEVICE FOR FOLDING, PRINTING, AND LIKE MACHINES.

"Application tiled December 19, 1924, serial No. 756,909, and in Germany March 22, 1924.

' This'invention relates to a mechanical sheet feeding device for use in folding,

printing and like machines being of the type In whichfor mechanical feeding a hoisting table is employed above the table for manual feeding, and it has for its object to enable the hoisting and lowering of the feed table to be effected Without disconnecting the driving connections between the operating devices arranged on the feed table and their stationarily'journalled driving parts so that the devices arranged on the table should durmg hoisting perform either no movement or be moved onlyto an immaterial -extent. A further object of the connection is to avoid the provision for the operating devices arranged on the feed table of cumbersome driving mechanism with multiple joints which would readily give rise to interruptions.

According to this invention the above object is attained by arranging the axis of rotation of the driving parts for the operating devices located on the movable feed table such as cam mechanism or cam devices in the form of cam discs, eccentrics, grooved discs or the like so as to definitely or approximately coincide with the axis of oscillation of the feed table or so that the feed table is arranged to oscillate about the axis of said driving parts. In such an arrangement employing grooved cam discs for driving the operating devices located on the feed table said devices are not influenced during the hoisting if the roller or rollers actuated by the cam groove or a rod or the like controlled thereby are subjected to the effect of the concentric portion of the cam groove. Only an insignificant movement of the operating devices takes place when the cam 4 rollers, rods or the like, during the hoisting operatlon come under the influence of the nonconcentric portion of the cam groove, "which however is not generally the case.

According to the invention moreover the lever gear employed for the conversion of .the movement directed longitudinally of the table into a -movement transversely to the direction of feed required for such devices fasfor example the movableside registering members of the side registering devices is so constructed that one of the lever arms which are at right angles to one another, at the end engagin the other arm is rotatable about a pin whic is at right angles to its axis of oscillation whereby the friction between the link members oscillating in rectangular planes is considerably reduced.

In the place of such lever arrangement use may be made with advantage for the conversion ,of the movement longitudinally of the table into a transversely directed movement for the operation of the side registering member of a gear comprising a toothed rack and a toothed gear wheel connected to which, crank fashion, is a rod driven from the cam disc.

The accompanying drawings illustrate the invention by way of example'showing, however, for the sake of greater clearnessthe driving arrangement only for one operating device arranged on the table, namely the side registering member.

Figs. 1 and 2 illustrate a'sheet feeding mechanism with a hoisting feed table, omitting, however, all details unnecessary for the understanding of the arrangement, Fig. 1 being a lateral elevation and Fig. 2 a plan view of the parts in their working position for effecting the mechanical feed.

Fig. 3 is an elevational view of the mechanism shown in Fig. lshowing' the feed table hoisted to its upper position. I

Figs. 4 and 5 show respectively an elevationand plan view of a modified mechanlsm provided with a toothed gear for drivmg the side registering members. g

Figs. 4 and 4' illustrate a detail of F1gs. 4 and 5 in elevation and plan view on a slightly enlarged scale.

Fig. 6 is a plan view similar to Flg. 5 showing a different position of the parts.

Fig. 7 is a lateral elevation of a further modification though similar to Fig. 4 with the difference however that the driving gear is licated on the underside of the feed table, an

Figs. 8 and 9 illustrate a detail of Fig. 7 in plan view and cross-section respectively.

In the various figures 1 is the framework of the sheet feeding device, 2 the table for manual feeding, and 3 the hoisting table for mechanical sheet feeding which is ada ted to oscillate about the axis of shaft 4. Arranged on the shaft 4 is a- .cam disc 5 which is driven by means of a sprocket gear 6 from a main driving shaft Loosely rotatable about the shaft 4 is a member 8 guided in which is a pitman 9. This pitman ing the cam other end 1s which is conriected.to an oscillating shaft 14. This shaft is journalled in a bracket 12 arranged at the forward end of the feed table 3. The lower end of the lever 11 is provided with an eye-piece 13 having its aperture at right angles to the oscillating shaft 14. Secured in the said aperture is a fork 15 by means of a pin so as to be rotatable therein. The prongs of the fork 15 embrace the end of an arm of a rocker 17 fulcrumed at 16 and rigidly connected to a lever arm 19 of which the other end is attached to the slide 18 of the side registering member (not shown), which is movable in transverse direction.

During the hoisting of the feed table 3 no movement is imparted to the operating parts arranged on the forward end of the table becausethe roller 10 of the pitman 9 travels in the section of the cam groove which is concentric with the axis of oscillation. The lever arms 11 and 17 capable of oscillating in planes at right angles to one another are free to perform relative movements since the fork 15 by means of its prongs can readily adapt itself to the movement of the lever 17.

The adjustment of the side registering member drive for the registration of the sheets in regard to the opposite side registering surface is effected by disconnecting the pitman 9 from lever arm 11 and connecting it to an upwardly directed lug 20 on lever 11 which lug to that end is provided with a connecting eye-piece 21.

In the place of the parts 11, 15, 17 and 19 use may be made as shown in Figs. L-7 of a toothed gear comprising a toothed rack connected to a transversely movable slide 22 of the side registering member and a toothed gear wheel 23 rotatably journalled on the table 3. This wheel 23 is provided with two diametrically opposite pins 24 and 24 (see Fig. 4 one of which, say 24 is flexibly connected to a rod 25 equivalent to the pitman 9 previously referred to. This rod is flexibly attached to a strap 27 guided by the eccentric block 26, which latter as in the previous example is rotatably journalled in the hub of the grooved cam disc 5 or on the shaft 4. Driving motion is imparted to.

the cam disc from the shaft 7 by means of toothed gear wheels 28, 29 and 30. The roller 10 operating in the cam groove of the disc 5 is in this case arranged on the strap 27. I

The adjustment of the movement of the slide 22 connected with the slide registering member which is necessary for the registration of the sheets'ag'ainst the other side registering surface in the printing of the second page of the sheet, is effected by the connection of'the pitman 25 with the other pin 24f of the gear wheel 23.

- Fig. 7 illustrates a constructional formof the device which differs from the construction shown in Figs. 4 and 5 by the arrangement of the driving gear for the side registering member on the under-side of the feed table 3. The shaft 4.- and the cam disc 5 are here likewise arranged substantially below the upper feed table and the strap 31 is provided with an extension '32 which is guided in a lug 33. arranged on the under-side of the feed table and is flexibly connected to the pitman 34. The latter is attached to a pin projecting from a gear wheel 35 arranged on the under-side of the feed table.

For the purpose of a ready adjustment of the side registering member drive for the registration of the sheets against the other side registering surface during the printing of the second page the strapin this constructional form of the device is provided with two rollers 36 and 36 both adapted to be individually retracted into openings on the inner-side of the strap so as to enable only one of these rollers to be brought into operative engagement with the cam groove as shown in Figs. 8 and 9. i The roller stems 37 equipped with push buttons as shown are each provided with two ring shaped grooves adapted to receive spring actuated pins 38 for the purpose of safe-guarding the contrivance in its adjusted position.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a sheet feeding device, the combination of a vertically oscillating feed table, a rotary opera-ting element having its axis of rotation coinciding or substantially coinciding with the axis of oscillation of the table, said element having an acting surface in part concentric with and in part eccentric to said axis of rotation, a reciprocatory member in engagement with said surface so as tobe actuated thereby, and sheet controlling means operable by said reciprocatory member.

2. In a sheet feeding device, the combination of a vertically oscillating feed table, a rotary operating element having its axis of rotation coinciding or substantially coinciding with the axis of oscillation of the table, said element having an acting surface in part concentric with and in part eccentric to said axis of rotation, a reciprocatory member in engagement with said surface so as to be actuated thereby, a second reciprocatory member and motion translating means between said members.

' 3. In a sheet feeding device, the combination of a vertically oscillating feed table, 1 rotary operating element having its axis of oscillation coinciding or substantially coinciding with the axis of oscillation of the in part concentric with and in part eccentric to its said axis of oscillation, a pitinan actuated by said acting surface of said rotary operating element, and sheet controlling means actuated by said pitman.

4. In a sheet feeding device, the combination of a driven shaft, a feed table mounted to oscillate about an axis concentric with said shaft, a rotary operating element fixed to the shaft for rotation therewith and having an acting surface in part concentric with and in part eccentric to its axis of rotation, at pitman actuated by said acting surface of said rotary element, a sheet controlling member, and interconnecting motion transmitting means between said pitman and sheet controlling member.

5. In a sheet feeding device, the combination of a vertically oscillating feed table, an operating element rotating on an axis concentric with the axis of motion of the table, a reciprocatory member operatively connected with said element so as to be actuated thereby, and a reciprocable sheet controlling element operative by said reciprocatory member, said operative connection between the operating element and reclprocatory member being variable in action for reversing the direction of motion of said member.

6. In a sheet feeding device, the combinareceiving working motion from said acting surface of said rotary operating element, and sheet controlling means actuated by the pitman.

7. In a sheet feeding device, the combination of a drive shaft, a feed table mounted to swing on an axis concentric with said shaft, a reciprocating element, driving means actuated by the shaft for reciprocating said reciprocating element, a reciprocatory sheet controlling member, and a connecting means between said reciprocatory members whereby reciprocatory motion is transmitted from one to the other.

8. In a sheet feeding device, the combination of a driving shaft, a swinging feed table movable on an axis concentric with the shaft, :1- pitman, driving means carried by the shaft for actuating said pitman, a reciprocating sheet controlling member mounted on the feed table, rocker elements to which the pitman and reciprocatory sheet controlling member are coupled, and an oscillatory connection between said elements.

9. In a sheet feeding device, the combination with a pivotally supported feed table, and mechanism for actuating the same, of sheet controlling means mounted on said table, and actuating means forsaid sheet controlling means, said actuating means being actuable by said actuating mechanism and being so coupled thereto so as to render their working connection inoperative for actuation of said sheet controlling means in one direction of movement of the feed table.

In testimony whereof I have affixed my signature.

GEORG sPIEss;

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