US3410A

US3410A - Boot-crimp

Info

Publication number: US3410A
Authority: US
Publication date: 1844-01-20
Anticipated expiration: 1861-01-20

Description

JOSIAI-I COPELAND, OF WEYMOUTH!MASSACHUSETTS, ASSTGNOR TO `.TOSIAH AND ABRM. THAYER, OF BOSTON, MASSACHUSETTS."

M. READ BOOT-CRIME Specication of Letters Patent No. 3,410, dated January 20, 1844:.

To all whom t may concern:

Be it known that I, JosIAi-r CornLAND, of lifeymouth, in the county of Norfolk and State of Massachusetts, have invented acertain new and useful Improvement in Boot- Crimps, and that the following specification of the same, taken in connection with the accompanying drawings, fully sets forth the nature and principles thereof by which it may be distinguished from others of like character. y

Of the drawings above mentioned Figure l represents a side elevation of my improved article as applied to the heel of a boot form and Fig. Q. is a central and longitudinal section thereof taken in a plane at right angles to that upon which Fig. l is delineated.

A, Figs. l, 2, denotes a block of metal which in shape is the frustum of a quadrangular pyramid. rThis block has a female screwI formed through its center to which (screw) the small screw a upon the straining shank B is adapted. The block A is situated withina metallic clasp C,`which is shaped as represented in the drawings and has suitable teethor indentations formed upon the inner sides of the portions Z2, Z), of it, or those between which and the sides of the block A the corners of the leather D are gripped. It will be perceived thatthe sides o, Z), of the clasp are not exactly at right angles with the `bottom Z thereoffbutare slightly inclined outward in opposite directions to each other, and form planes perpendicular to the said bottom the same be-` through. The sides of the block A may be scored or indented in order to `cause them to between its other opposite sides. This will enable us to readily adapt the instrument to leather of different thicknesses.

Tn order to use the crimp the end of the straining screw or shank B is applied in the socket of the heel of the boot form, in the usual manner, and the corners of the leather D, D, are next to be drawn over th-e opposite sides of the block A. The clasp C is then to be brought down upon the corners of the leather so as to inclose them between it and the block as seen in Fig. 2. This being completed the straining screw is to be turned in the requisite direction to cause the block A to recede from the boot form. The friction of the exterior sides of the corners of the leather upon the inner sides of` the clasp will retain the clasp in its position upon the leather while the black A is drawn into the clasp, or until the leather is firmly gripped between it and the same. of the straining screw being continued will stretch or draw the leather upon the form in the usual manner.

My particular arrangement of the parts of my bootI crimp renders it much cheaper in its construction and more convenient in operation than the article invented and patented byJosiah M. Read on the sixteenthV day of March, A. D. 1841, on which, as well as others, this may be considered as a great improvement. I am enabled to dispense with the wedge and stud used in the said Reads invention thereby simplifying the instrument. Generally speaking it will not be advantageous to construct the block A with indentations on its sides, but to leave the same very nearly smooth, and forming the inner sides of the clasp C with teeth.

I do not claim strictly the combination with a pyramidal frustum, or block A, of another piece ofmetal forced down upon or over it` by a screw orother contrivance separate from the main straining screw, and for the purpose of conining the corners or edges of the leather between the said pieces of meta-l; nor do I claim the forcing of the two jaws or pieces of metal together by a screw or other` contrivance separate from the main straining screw, but- That which I do claim consists in The manner, above described, of arranging the block A and clasp C, so that the The revolutions turning up of the straining screw shall, at specification of my invention I have hereto the same time, perform the double operation set my signature this tvventv seventh day of of confining the ends of the leather between December A. D. 1843.

the block and clasp, and of stretching the JOSIAH COPELAND. 5 leather over the boot form; the Whole being Witnesses:

substantially as above specified. IRA CURTIS,

In testimony that the above is a correctf ABRAHAM THAYER.