US257721A

US257721A - Eleazer kempshall

Info

Publication number: US257721A
Authority: US
Publication date: 1882-05-09
Anticipated expiration: 1899-05-09

Description

(No Model.)

` E. KEMPSHALL.

SNAP HOOK.

Patented May 9, 17882.

No 257,721. l

`UNITED STATES PATENT OFFICE.

ELEAZER KEMPSHALL, OF NEW BRITAIN, CNNECTICUT- SNAP-HOOK.

SPECIFICATION forming' part of Letters Patent No. 257,721, dated May 9, 1882. Application tiled December 15, 1881. (No model.)

To all whom it may concern l Be it known that I, ELEAZER KEMPsnALL, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Snap-Hooks, of which the following is a specification.

My invention relates to improvements in snap-hooks of the class which have a longitudinally-sliding bolt, in which the cylindrical hollow body of the hooks is made in two semicylindrical halves, with lugs upon one half, which take into recesses in the other half; also, in which a cylindrical body"is provided with a. hook and longitudinally-sliding bolt at each end, with a single spring between acting upon both bolts; and the objects ofl my improvements are, tirst, to reduce the cost ot construction, and,second, to produce a double snap-hook which shall be compactin form, and which can be made at a small cost. I

.attain these objects by the simple construction shown in the accompanying drawings, in Which- Figure l is a side elevation of the two halves ot'the body in the form in which theyare cast. Figs. 2 and 3 are plan views et' one ot' said parts. Fig. 4 is acentral longitudinal section ot` the complete snap, partly in elevation. Figs. 5 and 6 are transverse sections` of the body on line w .fr ot Figs. 4 and 8, showing respectively the two halves bet'ore and after securing them together. Fig. 7 is a plan view, showing my two-part body applied to a single instead ot' adouble hooked snap5and Fig. 8 is a side elevation ofthe same.

A designates the lower, and B the upper, halt'ot' the cylindrical body, both oi' which are substantially in the form of a semi-cylindrical shell in cross-section for the greater portion of their length. 4

The part A has a hook, a., at each end.` As in ordinary snaps, these hooks are first castas bent o" to one side, after which they are` straightened into the 4, 7, and 8.

Side recesses, b b, are cast in the part A, and corresponding lugs, c o, are cast on the part B, the same being formed preferably ot' cast malleable iron. The part B might,'however, be readily formed of sheet lnetal. `The bottoms of the recesses b b slant inward toward each other, as shown in Figs.`5 and 6.

position shown in Figs.

The parts are placed together with the lugs on part B entering the recesses in part A, as

shown in Fig. 5, after which the lugs are bent inward, as shown in Fig. 6, to hold the two parts of the body together. The seams are lilled up, and the parts also further secured together Yduring the usual tinuing operation. No drilling is required to make room for the spring and sliding bolts.

After one of the sliding bolts d d has been inserted the hook for that end may be bent intoposition. 'Then insertthe springoand the other bolt and bend the other hook into position, and the device is complete. The same Spring acts upon both sliding bolts, and therefore the body of this double-hooked snap does not have to be made twice thelength of asingle one. Such double-hooked snaps are useful upon breast-straps, and in many other places.

Figs. Zand S show the first part of my invention as applied to a single-hooked snap, and the sainey reference-letters are used to desig nate corresponding parts, but have the character affixed thereto.

l'do not claim a, snap-hook having a cylindrical body with spring and a longitudinallymoving bolt working therein, as the same is old; neither do I claim a double-hooked snap, because a prior patent shows a snap with a hook .at each end, and a single piece ot; sheet metal extending from hook to hook, fastened at the middle ot'its length to the body ot' said hook, so that each end constituted a springtongue adapted to close its own hook.

I claim as my invention- 1. AIn a snap-hook, the cylindrical body consistingoftwo semi-cylindrical shells havinglugs upon' one part and corresponding recesses in the. other part, which hold Ithe parts together when thelugs are putin place and bentinward, substantially as described, and for the purpose'A specified.

2. The im proved doublehooked snap,consist ing of the cylindrical body, two hooks and sliding bolts, and one spring acting upon both sliding bolts, substantially as described, and for the'pnrpose specified. v

ELEAZER KEMPSHALL.

Witnesses:

LYMAN S. BURR, JOHN P. BARTLETT.