US1841146A - Stitching machine - Google Patents

Description

Jan. 12, 1932. F. OHLIG STITCHING MACHINE Filed Jan. 26, 1929 7n van for.-

Jan. 12, 1932. F. OHLIG 1,841,146

STITCHING MACHINE Filed Jan. 26, 1929 2 Sheets-Sheet 2 Patented Jan. 12, 1932 j eanan STATES PATENT OFFICE FRITZOELIG; or 'GAUTZSCIVI, NEAR Lnirz e, GERMANY, ASSIGNOR TO THE FIRM rnuussn & co. AKTIEN-GESELLSGHAFT, or LEIPZIG, GERMANY STITCHING MACHINE Applicationfiled January 26, 1929, Serial No. 335,372, and in Germany January 23, 1928.

'The present-invention relates to a stitching'fnachine.

The stitching of books by means of the stitching machines at present in use is a very complicated and time-consuming process, be-

cause the printed, folded, and numbered sheets piledon long tables must be collected by hand, according towhether back or block stitching is to take place, laced into or on top of one another, and nally fed to the stitching machine by hand. I

T'Thes'e steps require much labor and space, and the object'ofthe invention is to remove these drawbacks by providing the stitching machine with a fully automatic sheet collecting,feeding and delivery device. The device serving for collecting the sheets,feeding them to the stitching machine and delivering them.

ma be executed in a great variety of types. ne'for'm of the invention is illustrated in the. accompanyin drawings, .in which Figure 1 is a side'view; ig. 2, a top view; Figs. 3 and 4, a view showing the action of the collecting.

blade; Fig. 5, a view. of the feeding device in various positions, and Fig. 6 shows a front view of the delivery device.

Referring to the drawings, 1 is the frame of the stitching machine which operates in the known manner and is driven by the motor 2. The'stitching heads and the means for driving them-have been omitted in the drawings to simplify matters. The motor 2 rests one carrier 3, one end of which is secured to the frame 1 and the other, to the base 4 of a column'5'. Surrounding the column 5 in .a

circle are the feeding tables 6 whichare supported by the arms 7 of the base 4. The tables are spaced uniformly from one another with the exception of two, the distance between 0 which is twice thatiprevailing between the others. These'two tables, i. e., the first and the lastone, are arranged symmetrically relative to the center line of the frame 1 and base.

4. The folded sheets to be stitched are piled 5 on the tables'so that each pile contains the sheets to be inserted in the sheets of thepreceding piles, while the side and rear ledges 8 preventthe pilesfrom shifting. 'The tables 6 are raised intheknown manner when the pile is reduced in height, and as the device for raising the tables is known, it is not shown in the drawings. Above each pile one or more suction, heads 9 are arranged connected by the hose 10 with an'air chamber 12 carried by the top 11 of the column 5. The'air chamber 12 is connected byan air piping 13 with an air pump 14 actuated by the driving motor of the stitching machine. For the sake of simplicity it is assumed that the pump is of the piston type and adapted to suck air from the chamber 12 at onestroke and to press in air at the next stroke. Each of the suctionheads 9 is carried by an arm 15 articulated to the column top 11 and engages, as a rule, the top sheetof the pile.

The column 4 is provided in its upper part with a rim 16 carrying a lever arm 17 with the pawl18, which rotate easily thereon, and supporting a feed disc 19 which rotates loosely on the column4, the pawl 18 cooperating with the feed disc 19. The lever 17 by means of a spring 20, is continually drawn against a crank pin 21 of a'disc 22 arranged on a shaft 24placed vertically in the arms 23 of the rim 16 of the base land driven continually by the motor 2 over a compound gear 25, a horizontal shaft 26, and a bevel pinion 27. During the rotation of the disc 22 the lever arm 17 is moved forward and backward to the extent of an angle corresponding to the distance between two piles. Durin the movement in one direction the feed disc 19 is caught which is provided with the flat blades 28 arranged on a level with the top of the pile and extending-towards the piles and. a distance across them, the number of blades exceeding the number of piles by one. The folded sheets are now piled so that the blades 28, at each rotation of the disc 19 and when striking a pile, move from one corner between .the folded top sheet and catch it. Between the various piles of pages is a platform 29 on which the sheets caught by the blades slide in horizontal position. Y en during the forward movement of the disc 19 the blades strike the next pile, they push the sheet carried by them into the fold of the top sheet of the pile concernedand catch the said top sheet also until finally the blades have removed one folded sheet each from all piles and inserted them into one another.

The suction'heads 9 serve for opening the folded sheet to make sure that the blades engage the topsheets without fail. The suction stroke of the pump 14 takes place shortly after the beginning of each feed motion of the disc 19 or the blades 28 so that the suc tion heads suck up the sheet lying under them. During the rotation of the disc 19 the stops 30 arranged thereon strike a nose 15a of the arms lacarrying the suction heads 9 and lift them. The suction heads 9 are lifted also and open the folded sheet so that the blades can enter., The compression stroke of the pump continues up to shortly after the beginning of the feed motion of the disc 19 so that,

as the: sheets are caught by the blades, they do not adhere any more to the suctionnozzles.

To. prevent the catching of the second sheetv during the further movement of the feed disc,

light springs 31 are arrangedin the direction of motion ofthe blades and in frontof the piles, the springs being adapted-to hold back the second sheet and to be pushedaside by the 1 blades.

Between the first and last pile no sheet slide-is provided. When the blades leave the last pile, the sheets arranged thereon drop down loosely so as to ride on the blades.

' lVhen the blades with their depending sheets stop between two motions ofthe disc 19 at the center line of the frame 1 and base 4, a bar 33 arranged I on the stitching table 32 of the stitching machine slips below the blade and between the sheets, drawsthem off from the blade, andpushes them on the stitching track 34. To prevent oscillation of the sheets after the feed motion and to cause the bar to enter safely between the sheets, a stop 35 is provided whichis struck by the'sheets at thelast feedmotion. In thehead 3300f the bar 33 float two feelers 36 which are connected with a sleeve 37 adapted to slide loosely on the bar 33. During the forward movement of the bar 33the sleeve 37, owing to inertia, remains behind and causes the feelers 36 to hug the bar flatly. (Fig. 5). The bar 33 is pushed forward far enough to have its head and the feelers 36 project completely over the sheets. If the bar 33 is pulled back now, the feelers 36 will spread out, because the sleeve 37 follows the bar 33 at a later time at this motion also. (Fig. 5). The feelers 36 hug the rear edge of the sheets, push the latter in position, and draw them offfrom the blade and and on to the stitching track.

. Themovement of the feeding bar 33 is actuated by a single arm lever 38 pivotally mounted on the machine frame and moved b meansof a connecting rod 39 from a crank drive 40, the" latter being driven from the shaft 26'by means of the double helical gears 41. I The movement of the bar 33 must be completed during'the stop between two motions of the disc'19. After the bar 33 has placed the .ods now in use.

ranged on the frame 1, the other arm of the bell crank running on the circumference of a cam disc 46 suitably driven by the motor 2. On the pivot 47 of the lever 43 "a torsional spring 48 is arranged having the tendency to place'the lever 43 in such a position that the ferrule 42 hugs the stitching track. The ferrule 42 is moved out of this position after each stitching process, when it carries the sheets lying on the stitching track with it and delivers them to a lateral table 49. When the ferrule moves up again, the stitched sheets unfold. g

The machine described makes possible a fully automaticv working process after the piles have been put on, so that the number of operators and auxiliary labor can be reduced considerably and the output increased many times. Moreover, the entire machine requires far less space than the working meth- The machine is fitted with the known safety devices adaptedto stop it, if a blade should failto catch a sheet from the pile or if anything else goes wrong.

Iclaim: f i

1. In a machine of the type described a column, a plurality of suction heads swingingly connected with the said column,a rotatably feed disc, and a plurality of noses secured to the said feed disc and adapted to raise the said suction heads uponzrotation of said feed disc.

2. In a machine of the type describeda column, a plurality ofblades, a table, a stitching track, a stitching table, means-for supporting a plurality of sheets, said blades re-' ceiving the sheets, and a bar slidingly arranged in the said table and adapted to pass under the sheets collected by the said blades and depending from them vertically when the said blades are on the center line ofthe machine and the said column and to draw the said sheets from the said blades and to serve as straightening means and catches for the sheets. 1

4. In a machine ofthe type described a longitudinally movable feed bar, a sleeve loosely arranged on the said bar, and a plurality of folding arms articulated to the said sleeve, the said sleeve being adapted to lag behind the motion of the said bar owing to inertia and to cause the movement of the nal direction thereto, said ferrule being provided with sheet engaging means, the said ferrule being moved away from the said track in parallel position after each stitching operation to deliver the stitched sheets.

7. In a machine of the type described a sheet engaging ferrule, a stitching table, a cam disc, and an arm carrying the said ferrule and being oscillatably arranged in the said table and actuated by the said cam disc.

8. A machine for collecting sheets in book making, comprising a vertical standard, a plurality of supports about the standard for receiving piles of sheets of folded paper, a rotatable disk on the standard arranged at the top of the piles of sheets, means for r0- 7 tating the disk, a plurality of plates carried by the disk for engaging the top sheets of each pile consecutively and removing same, and means for lifting the top sheet of each pile in advance of the plates to enable the plates to engage the sheets.

9. A machine for collecting sheets in book making, comprising a .vertical standard, a plurality of supports about the standard for receiving piles of sheets of folded paper, a rotatable disk on the standard arranged at the top of the piles of sheets, means for rotating the disk, a plurality of plates carried by the disk for movement in a path across the tops of the piles of sheets to engage each top sheet of each pile consecutively and remove the same, and means operating in advance of the plates for lifting the top sheet to enable the plate to engage it.

10. A machine for collecting sheets in book making, comprising a vertical standard, a

- plurality of supports about the standard for receiving piles of sheets of folded paper, a disk mounted for. intermittent rotational motion on the standard, means for actuating the disk, a plurality of plates carried by the disk for movement in a path across the tops of the piles of sheets to engage each top sheet of each pile consecutively and remove the same, table means between the piles of sheets adjacent the tops thereof, and means operating in advance of the plates for lifting the top sheet to enable the plate to engage it.

11. A machine for collecting sheets in book making, comprising a vertical standard, a plurality of supports arranged about the standard for receiving piles of sheets of folded paper, a disk on the standard and movable with respect thereto, pawl and ratchet means for giving the disk an intermittent motion, means for actuating the disk, table means between the piles of sheets adjacent the tops thereof, a plurality of plates carried by the disk and adapted each to pass across the tops of the piles as the disk is moved to engage and remove a sheet from each pile, pneumatic means operating in advance of the plates for lifting the top sheet to enable the plate to engage it, and means for removing the sheets from the plates.

In testimony whereof I have affixed my signature.

FRITZ OHLIG.

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