USRE5803E - Improvement in machines for pricking leather - Google Patents

Description

UNITED STATES I PATENT OrrIcE J. H. WALKER, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR PRICKING LEATHER.

Specification forming part of Letters Patent No. 34,537, dated February 25, 1862; reissue No. 5,803, dated March 24, 1874; application filed February 26, 1874.

To all whom it may concern Be it known that I, J. H. WALKER, of the city and county of Worcester, State of Massasewed up by hand, enabling the seams to be sewed much faster, and insuring a true, even row of stitches corresponding to any form or pattern desired. It consists in arranging a series of pricking-points or awls (sufficient in number for all the stitches desired) in a carrier or slide, by means of which they may be jointly moved, and connecting therewith a perforated plate or table through which the awls pass before entering the leather, and into which they may be withdrawn sufficiently to release them from the leather, and a platen or point-receiver having a series of holes corresponding to the awls, and into which they enter after passing through the leather, and also in a peculiar arrangement and combination of levers and their connections with the above, and the necessary frame-work and table or stand, whereby the machine'is made capable of being operated quickly and conveniently by one person.

The accompanying drawings represent a machineembodying my invention.

Figure 1 is a front view. Fig. 2 is a view from above. Fig. 3 is a central vertical section from front to rear.

The bed or table marked 4 in the drawing is supported on the legs 5, and to it is attached the perforated plate 6, which has a series of holes corresponding to the awls in the awl-carrier S, in which the awls are set the proper distance apart, and on a curved line corresponding to the pattern or form of the boot, and which slides in the ways 9. 7 is the point-receiver or platen, having holes in its surface facing the awls, into which the awls enter, and moving in slides or ways 0. 10 is a spring, supported by the table, and connected to the point-receiver 7, and the carrier Sis provided with a similar one. 12 is a forked lever having its rear end pivoted at 13 and its forked ends resting against the point-receiver 7 to op-. erate it; and 14 is another forked lever whose forked end rests against the carrier 8, and has It will be seen in Fig. 2 that the point-receiver 7 is of a curved form, to correspond to the awls, which are set on the curve of the edge of the back or pattern of the boot to give the proper seam.

In operation, the gage 19 is set the distance from the awls that it is desired to make the holes from the edge, and the leather is put on 6 and against the gage, and the foot-lever 18 is depressed, bringing with it the rear'end of lever 14, which, by its rods 15, 'brings the platen 7 against the leather, and, at the same time, forces the carrier 8 and awls against the other side and through the leather into the holes in the platen, pricking the leather. On releasing the lever 18 the springs separate thev carrier 8 and point-receiver 7, returning the latter to place, and withdrawing the former and its awls back through or into the holes in plate 6, which strips or releases the leather from them, the whole operation being readily performed by one operator.

I claim- 1. In a leather-pricking machine, the combination of the awl-carrier 8, having a series of awls set in a curved line,-and a point-receiver, 7, having holes corresponding to the awls, and into which they enter in operation, as set forth.

2. The combination, in a leather-pricking machine, of the awl-carrier 8 having a series of awls set in a curved line, corresponding pointreceiver '7, and perforated plate or stripper 6, which releases the leather from the awls, substantially as described.

3. The combination, in a leather-pricking machine, of the carrier 8, point-receiver 7, and

the forked levers 12 and 14, springs 10, rods leather placed between shall be pricked as de- 15, and foot-lever 18, to operate them in thesired, and the awls released therefrom, submanner and for the purpose above set forth. stant-ially as described.

4. The combination, in a leather-pricking Witness my hand this 24th day of February, machine, of a perforated plate with an awl- A. D. 1874.

carrier having a series of awls set in a curved J. H. WALKER.- line,and corresponding point-receiver orplaten, Witnesses: with the mechanism to move the carrier and F. T. BLOEKMER,

platen toward and from each other, so that DAVID MANNING, J r.

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