US1399555A - Automatic feeder for bock-stitching machines - Google Patents

Description

W. A. HEITSHU.

AUTOMATIC FEEDER FOR BOOK ST ITCHING MACHINES. APPLICATION FILED 1M. 9, 1919.

Patented Dec. 6, 1921.

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Application filed January 9, 1919.

I '0 all whom it may concern:

Be it known that l, l VILLmM It. llnrrsno, of Lancaster, l cnnsylvania, have invented a certain new and useful improvement in, Automatic Feeders for BoolcStitching lilachines, and do hereby declare that the fol lowing is a full, clear, and exact description thereof.

My invention relates to book st tch ng machines, of the class inwhich the stitching is done at intervals, as by wire passed through the leaves or signatures, and my object is to provide a mechanical feeder of simple and inexpensive construction, and which will be highly efficient, and to this end my invention consists in the feed mechanism constructed substantially as hereinafter speclfied and claimed.

In the annexed drawings,

Figure 1 is a perspective view of a well known wire stitcher, in which my invent on is embodied, the stitching machine being shown in dotted lines 5' Fig. 2is a detail view in cross sectlon through the saddle;

Fig. 3 is a detail view 1n perspective of one of the reciprocating feed blocks, and the finger trip; l

Fig. 4% is a detail view, lIl cross section, of the adjustable pivot connection between the members of the feed block reciprocating means; 1 n

Fig. 5 is a detail view showlng the contour of the cam that actuates the feed block.

The stitching machine, being of a wellknown construction, needs only a general do scription. It has a Cshaped frame 10, mounted upon legs 11, which frame supports an 111- verted, horizontal ll-shape table or saddle 12, and wire feeding and stitching mechanism, 13, and a horizontal operating shart 14L having a pulley 14" for revolving 1t. The book or pamphlet to be stitched 1s placed upon the saddle, which it straddles 111 an open position, and 1s slid or fed along the saddle to present it to the stltching mechanism for stitching at the desired points, and heretofore, the feeding has been done by hand.

Briefly described my invention comprehends the use of two similar reciprocating feed blocks, each carrying a book-engaging finger, one block at each side of the saddle, and a cam applied to the driving shaftby which motion is imparted to thefeed blocks alternately in opposite directions so that Specification of Letters Patent.

Patented Dec. 55, 1921..

Serial No. erases.

while one block is feeding a book, the other 15 returning to position to feed another book, and thus the output of the machine doubled. As each feed block is like the other, the description of one will apply to both. Each feed block 15 has a T-slot that fits a "l"-bar 16 secured to the underside of the saddle. and pivoted to its side is a finger 17 which is adapted to project upward through a longitudinal slot 18 in the saddle, in position to engage the end of a book placed outside the saddle. When the finger reaches the end of theslot, in its forward movement, a further short movement of the block results in the folding down of the finger below the outer face of the saddle, so that on ensuing reverse travel of the block, the finger will not collide with another book on the saddle. Attached to the finger 17 at the side thereof, and at an angle of 90 degrees thereto, is a short finger 19 adapted, on the return stroke of the block, to encounter a trip lug 20 secured to the underside of the saddle and be rocked thereby so as to lift the finger 17 to its book'engaging portion above the saddle. The trip lug 20 is mounted on a rod 21 which passes through an eye 22 of the lug which is thereby shiftable to place the trip at the desired adjustment required by the length of the book being fed. set screw 23 in the eye secures the trip to the rod at the desired adjustment. A scale is marked on the rod to facilitate adjustment.

A spring 24 attached at one end to the feed block and pressing at its other end upon the hub of the feed finger 17 holds the latter yieldingly in each of its two positions.

To the underside of the feed block is pivotally connected, preferably by a universal joint, one end of a link 25 whose other end is pivotally connected to the upper end of a lever 26 that it attached to a horizontal rock shaft 27 supported by bearings 28 on a base frame 29 that rests on the floor. Attached to the rock shaft is a crank arm 30 with which is pivotally connected a link 31 that is attached to a lever 32 pivoted to the machine frame 10, and having a roller 33 that engages a cam 34 geared two to one to the driving shaft, by which the movements of the feed block are effected or controlled.

The cam may be a track cam, or as shown, a spring 35 acting on the lever 32 may move the latter in opposition to the cam. The cam has such contour that it imparts three forward movements intermittently with two idle motions, and a return movement, an idle motion occurring between the first and second advance, at which time the work is stationary for the stitching operation, and the third advance being for the purpose of moving the stitched book onward to the packer. The packer is also operated from a cam on the driving shaft.

The rock shaft 36 for one of the feed mechanisms is a sleeve loose on the rock shaft 27 of the other and the cam acts on the levers of the two feed mechanisms at points 180 degrees apart so that while one set is feeding the other is returning.

The rock shaft bearings 28 are shiftable for adjusting the feed mechanisms to suit the length of the book or pamphlet, and to shift the rock shafts for such purpose, I attach to the rock shaft 27 a screw rod 37 with a hand wheel nut 38 that has a swiveled bearing on the base frame 29.

The throw of the feed block levers is adjustable by making the pivotal connection between the crank arm 30 and the link 31 adjustable. The details of the adjustment pivot are shown in big. 4. The crank arm has a slot 320 which engages a squared section .330 on a headed bolt 340 which passes through a sleeve 350 that hasa head 360, next to the crank arm and at its other end is engaged by a nut 370 on the bolt. The link 31 has a slot 380 which engages a squared section 89 on a tubular bolt 40 that fits over the sleeve 35, and the link lies between a head 41 on such sleeve and a washer 42 loose on the sleeve that is engaged by a clamping nut 43. p

The work is placed on the saddle by two operatives, one at each side of the saddle.

From the saddle the stitched book is delivered to a downwardly inclined chute or guide 4.4, supported by a vertically adjustable standard 45, which directs it to the packer 46, of well-known construction, and therefore needing no specific description. Its reciprocating pusher -17 is connected by a link 4&8 to a bell crank lever 49 that is vibrated by a rod 50 that is reciprocated by a cam 51 on the cam shaft 52.

Of course, my invention is applicable to other types of stitching machines than that shown in the drawings; and its details of construction may be varied without departure from the principle involved. Its characteristics, as l have worked out the construction, enable it to be applied to stitching machines already built and designed.

for hand feeding.

I claim:

1. In a book stitching machine, the combination of a work table and a plurality of alternately acting work feeders each having an idle and a feed motion and the feed motion of one occuring during the idle motion of the other.

2. In a book stitching machine, the combination of a work table and a plurality of alternately acting work feeders, each comprising a reciprocating feed block each having an idle and a feed motion and the feed motion of one occuring during the idle motion of the other.

3. In a book stitching machinefthe combination of a saddle, a reciprocating feed block for each side of the saddle and means to reciprocate such feed blocks alternately, the motion in one direction being feed and the other idle, and the feed motion of one occuring during the idle motion of the other.

In testimony that I claim the foregoing I have hereunto set my hand.

WM. A. HEITSHU.

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