US90896A - Improvement in snap-hook - Google Patents

Description

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FREDERICK VALENTINE, OF BU'FFALOl NEW YORK, ASSIGNOR 'lO PRATT & LE'ICHWOR'IH, OF SAME PLACE.

Letters Patent No. 90,896, dated June `l, 1869.

IMPROVEMENT IN SNAP-HOOK.

The Schedule referred to in these `Letters Patent and making part of the same.

To all 'whom 'it may concern Be it known 'that I, FREDERICK VALENTINE, of the city of Buffalo, in the county of Erie, and State of New York, have invented certain new and useful Improvements in Snap-Hooks; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, in which- Figure I is a longitudinal section.

Figure II is a perspective view.

Figure III is a back view, with the spring and trigger-lock removed.

Like letters of reference indicate like parts in each of the gures.

My yimproved snap-hook consists of the followingr essential features or elements, viz:

' First, a'rnortise and recess, cast in the shank of the hook without coring;

Second, a trigger or lever, hinged in said mortise, with one end uniting and locking with the end 'of the hook, while the other projects through the shank on the back side, so as to form a trigger or finger-piece for operating it; and

Third, ,a hat spring, arranged and secured in place by three bearing-points, of which the trigger forms one, without -the use of a rivet or other permanent fastening.

The invention does not consist oi' either of these elements, separately considered, but in the construction and arrangement of the several parts as a whole, forming an improved article of snap-hook.l

In the drawings above referred toa. represents the channel or recess formed in the back side of the shank, and a the mortise or opening through the shank, in which the trigger or lockinglever is hinged.

This lever consists of a locking-end, 11, projecting through the shank, and engaging with the end of the Y hook o, and t-he trigger or finger-piece b', i'or operating it in detaching the hook.

It is also formed -with a shoulder, d, which stops against the end of the front-plate portion c of the shank, andvwith a notch, e, to receive the end of the hat spring j, as shown in Fig. I.

The shank of the hook next tothe loop y, is cast with an opening, i, through it, so as to leave a crossba-r, m, and a feed-bearing' n, at the end of the plate c.

'lhe spring fis made of such width as to fit in the groove a.

The end which engages with the cross-bar m is slightly curved, so as to partially hook around the latter, while the opposite end iits in the notch e in the trigger.

It will thus be readily perceived that the three bearings e m n will securely retain the spring in place, without anyrother means of fastening.

The operation of my improved hook is obvious.

I am .aware that snap-hooks, provided with a trigger-lock and'spiral-spring, or a spring differently arranged from mine, are old.

VBut in all these,so far as -I am acquainted with them, the arrangement and construction of the parts are such as to make the article either more expensive than mine, or more liable to get out of order, or less convenient to handle, or more clumsy or ungraceful in appearance.

Thevshank of my hook can he cast without coring. The spring can be applied without any expensive mode of fastening; and, when once arranged, with the trigger in place, it becomes perfectly secure against displacement.4

Ihe hook is compact, can he cheaply man ufactured, isneat in appearance, and can be conveniently operated.

These advantages result from thc peculiar manner of forming the shank, in connection with the fiat spring and notch e in the trigger, whichftaken together as a whole, form my invention.

Having thus described my invention,

What I claim, and desire to securevby Letters latent. is-

'lhe construction and arrangement of the'recess and mortise a a', hearings on, n., and c, flat spring j, and,

lock-trigger b IJ, as herein described, and for the purpose set forti..

F. VALENTINE.

` Witnesses:

JosrAH Ln'ronwonTH, JAY HYATT.

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