US31922A - Boot-crimp - Google Patents

Description

IUNITED siarngsbrrnnr orrron.

JOSEPH G. VHIT'IIER, OF ATTICA, INDIANA.

. BOOT-CRIME Specification of Letters Patent No. 31,922, dated April 2, 1861.

To all whom fit may concern.'

Be it known that I, JOSEPH G. VHITTIER, of Attica, in the county of Fountain and State of Indiana, have invented a new and Improved Boot-Crimping Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part ofthis specification, in which- -Figure l, is a rear elevation of the said machine as employed for breaking. Fig. 2, a vertical section at Fig. 3, is a detached perspective view of the crimp employed.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists lst. In an improved construction of crimping jaws. 2nd. In an improved combination of devices for setting and releasing the jaws as hereinafter explained.

To enable others skilled in the art to make and use my invention I will proceed to de scribe its construction and operation.

A, A, are two standards, affording journal bearings 'for a horizontal shaft B, to which are rigidly secured segment gears C, C, which take into racks cl, CZ, upon a frame D, adapted to slide in ways on the standards A.

E, E, are levers rigidly secured to the shaft B, and connected by a hand bar E.

F, is the break or form, secured between suitable lugs projecting inwardly from the frame D, as shown in Fig. l.

Gr, is an angular bar fitting the upper edge of the form F, and secured to the upper ends of the frame D, in order to strengthen the same during the operation of first pressing the boot front into shape as hereinafter explained.

H, H', are a pair of metal plates, constituting the rigid backs of the crimping jaws. The faces I I of the said aws are composed of leather or other fiexible material attached at the lower edges to plates z', 2', and supported by springs J, J, of gum elastic or other suitable material.

The crimping aws are secured at any desired proximity and released at will by the following mechanism: K, is a horizontal rod formed with a head la, at its rear end and a screw thread at the front, upon which screw thread is a set nut L. M, is a toggle forming when in the position shown in Fig. 2, a rigid bearing between the plate I-I,

f and the head 7c, of the rod K. The two members of the toggle M, are pivoted in the center to a vertical bar N, working ina guide n, and attached at its lower end to a lever O, which lever is fulcrumed in the main frame of the machine and projects in front. P is a fra-me support-ing the rear end of the rod K, in such a manner asto aford it free longitudinal play.

Q, in Fig. 3, represents a crimping knee provided'with a crank screw R, and clamping jaws g, g, and applied to the form F, after the operation of breaking to stretch the boot front and thus hold it till dry.

rIhe operation is as follows The parts being in the position shown in Fig. 2, and the nut set in such position upon the rod as to compress the jaws together with the requisite force, a piece of leather to constitute a boot front is placed around the form F, and the levers E, being drawn forward and downward by means of the connecting bar E, the leather is forced downward betweenthe jaws, and thereby pressed into proper shape upon the form F. A slight pressure of the hand uponthe front end of the lever O, throws up the toggle M, thereby instantaneously releasing the jaws. The frame D, is then partially elevated and the bar G, removed and replaced by the conlining knee Q, to which the leather is attached by fixing its edge under the jaws Q. The frame D, is then again forced down and the leather tightly stretched around the form F, by means of crank screw R. This done, the frame is again elevated, the pin f, taken out and the form and crimping knee removed'with the crimped front n position, and' set away for the latter to dry. A new forni is then placed in the machine and the operation proceeded with as before.

, A great advantage in my invention is that the boot front is crimped by the machine upon the same form upon which it is left to dry thus performing the work much more effectually and saving the time and labor involved in transferring the boot front to the crimping board by hand.

Having thus described my invention what I claim as new and desire to secure by Letters Patent; is,

l. The construction of the crimping jaws 5 With rigid backs, flexible a-ces and interposed springs, substantially as and for the purposes set forth.

2. The combination `of the rodK, set nut plained.

J. Gr. VVHITTIER. lVitnesses Oo'rAvIUs KNIGHT, CHS. W. BENDR.

Images