US77489A

US77489A - Improved boot-form

Info

Publication number: US77489A
Authority: US
Publication date: 1868-05-05
Anticipated expiration: 1885-05-05

Description

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JARVIS HOWE, OF MILFORD, MASSACHUSETTS.

Letters Patent No. 77,489, dated May 5, 1868.

IMPROVED BOOT-FORM.

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TO ALL WHOM IT MAY'OONOERN:

Be it known that I, JARVIS HOWE, of Milford, in the county of Worcester, and State of Massachusetts, have invented a new and improved Boot-Form; and I do hereby declare that the following is a full, true, and exact description of the same, reference being had to the accompanying drawings.

My improved form is constructed in three main parts, A, B, and C, the two first being of wood, and the third of some suitable metal. I ordinarily use composition. The shape of the parts and the method of putting them together are sufliciently shown in the drawings, especially in .Figures 5 and 6, which show the parts A and B in perspective, and Figures 3 and 4, which are sections through the lines a: a: and y 3 respectively.

The thimble D, (to receive the end of the crimp-screw) is inserted in a chamber in the part Gyas shown in figs. 3 and 4, fig. '3 being a plan of the part 0, with part of one of its sides, (that part which forms one wall of the chamber) removed, in order to show the interior of the chamber.

This thimble rests upon a pivotal: the bottom of the chamber, and also upon notches cntuintwo walls of the chamber. It is so held in the chamber by means of the-pins b b, the washer c, and spring ii, that it can be pulled out farenough to allow the lugs on the plate a, to be shifted to the difi'erent notches. When so shifted,

the spring brings it back again to its proper position. Thepins b 6 pass entirely through the walls of the chamher over the washer e.

Boot-forms, heretofore, have been commonly made entirely of wood, in one piece, and the main object of my invention is to remedy the defects in forms so made.

The first part of my invention relates to the edge of the boot-form. All forms now in use are made wholly of wood, (except the thimble forthe end of the crimp-screw,) and the edge, when the wood becomes wet, from the wet leather of the boot-front, is liable to be compressed out of shape, from the pressure of the boot-front upon it, when the boot-form becomes practically worthless.

' To remedy this evil, I make that part of the edge of my bo0t-form, upon which the principal strain comes, of metal. The best method of applying this metal edge known tome, is by means of the flange and shoulders, as

shown in Figure 2, in section. It is obvious that this part of my invention may be made use of with advantage,

to improve the common form now in use, bycutting away the whole or a. part of its edge, and applying a metal piece, all as shown in fig. 2. This metal edge so applied would also, strengthen the form.

The second part of my invention relates, first, to strengthening the form; and, second, to preventing waste of lumber in its manufacture; and, third, to replacing worn-out forms. From the shape of the wooden form now in use, it is obvious that the foot-part is very liable to,be accidentally broken off, unless the grain of the wood happens to run in a particular way. It is also obvious that there must be a great waste of lumber in manufacturing this form.

By making the foot and leg-parts of my form in separate pieces, and uniting them by-a suitable metal piece,

I obviate both these objections, and am also enabled to use a cheaper quality of lumber. Making the foot and leg-parts of my form in separate pieces also enables me to gain a third advantage, which relates to replacing those parts of the form to which it is necessary to tack the fronts of the boot after the form is so much injured by these tack-holes as to be comparatively worthless, the great majority of the forms. consumed by the trade being thrown aside because of this wear of these parts. In my form these parts, (the leg and foot-parts A and B,) are manufactured to fit the metal part 0, so that when these parts are worn out they can be replaced, thus, to all practical intents and purposes, supplying the manufacturer with new forms, at a much cheaper rate than the wooden forms can be supplied.

- The third part of my invention relates to changing the draught of the crimp-screw, by adjusting the thimble, which receives one end of this screw. This I do by shifting the lug on the plate a to the difl'erent notches. This part of my invention is useful in any boot-form, although a shorter thimble must be used whenit is aflixed .to a form without a metal piece, as it would render a wooden form too weak to have a deep chamber cut in it.

' What I claim as myinvention, and desire to secure by Letters Patent, is-

1. As an article of manufacture, a. boot-form, having a metal edge, substantially as and for the purpose specified.

2. The combinationof the parts A, B, and C, substantially as and for the purpose specified. 3.- The thimble, when combined with a. plate, having lugs and the notches, substantially as and for the purpose specified.

4. As articles of manufacture, the parts A and B, when constructed and arranged for use on the part C,

eueh substantially as described. I

5- The arrangement of the piece D in the chamber, substantially as shown. 6. A boot-form, the leg and foot-parts of which are separate pieces, united together by a third piece, substantially as described and for the purpose specified JARVIS HOWE.

Witnesses:

CHAS. F. SLEEPER, J. E. MAYNADIER.