US350055A - Assffinoe to w - Google Patents

Description

(No Model.)

G. M. HUBBARD.

SNAP HOOK.

No. 350,055. Patented Sept. 28,1886.

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N PETERS Paomumo nw Washmglun n c NITED STATES GEORGE M. HUBBARD, OF NE\V HAVEN, CONNEC'llUlll, A SSIGNOR O \V.

E. T. FITPH, OF SAliiFl FLAP-ll.

SNAP-HOOK.

QPECIPICATION forming part of Letters Patent No. 350,055, dated Sept/sinker 28. 1836.

A pplieulion filed July I2, 1856.

To all 1073/0722 it may concern.-

Be it known that .l, (t nomzn M. H nnexaoot New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Snap-Hooks; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a perspective view; Fig. 2, a top view complete; Fig. 3, a top view, thetougue removed, and showing the recess as cast suificientlyopen for theintroductiou of the spring; Fig. 4, a perspective view of the tongue; Fig. 5, a longitudinal section of the hook complete; Fig. (3, a longitudinal section showing the method of introducing the tongue.

This invention relates to animprovement in snap-hooks, and particularly to the snap known as the Bristol snap-that is to say, a snap in which the tongue is constructed with a recess in its hub to receive a torsion-spring, and the tongue and spring hung in a recess in the body of the hook, and particularlyto that class of such snaps in which the pivot upon which the tongue hinges is cast apart otthe body, in contradistinction to first drilling the body and introducing the wire for the pivot, and such, for illustration, as that patented to )harles B. Bristol March 30, 1880. In this construction oi. snaps it is necessary that the recess be cast open, so that the checks are sufficieutl y far apart to permit the tongue to pass the pivot in entering the recess, and then the cheeks or sides are forced toward each other to bring them into the proper relation to the sides or hub of the tongue. In bending the checks to thus embrace the tongue very many are broken, so many that the loss adds mate rially to the cost of manufacture. Attempts have been made to overcome this dilticulty by bending some other portion of the hook-as, for illustration, to bend the tongue around. the pivot, or to form lugs upon the body, which are bent down over the tongue. Such bending, however, does not to any material extent reduce the breakage.

The object of my invention is to so greatly reduce the extent oi. bending of the checks as Serial No. 2111,1312, (No model.)

to practically avoid the liability 01' breakage; and the invention consists in the construction as hereinafter described, and particularly recited in the claim.

A represents the body ol' the snap,conslrueted with a hook, l at one end and eye (1. at the opposite end. and with a recess, l), at the eye end ol'thc body and opcninginto the eye. On one ol the checksof this recess a stud, a, is cast as a part of thebody,and extending transversely nearly across the recess, but so as to leave a space between the opposite cheek and the end oi'thepivol. On one or both sides of the recess at its rear end. is an inwardly-projecting lug, I).

F is the tongue, of substantially the usual shape, the hub of the tongue somewhat less in thickness than the width ol' the recess l). The width oi" the tongue proper or at the hub is somewhat less than the distance between the legs I) I), and the hubof thetongue is constructed with a recess, (1, in one side, as in the Bristol patent bct'ore referred to, this recess being adapted to receive the spring. Through the hub is a concentric opening corresponding to the pivot, and which opening extends radially outward and downward, so as to open upon the under side of thehub andas seen in Fig. 5.

F is the spring, prelcrably a torsion-spring, the diameter of the coil corresponding to the diameter of the recess .iuthe hubol'thetongne, thcarms extendingtheret'rom,a.nd so thatwhen in thepositiou seen in Fig. 5 one armwill take a bearing beneath the tongue, and the other arm will take a like bearing upon the body below, the tendency being to hold the end of the tongue against the nose of the book, as in the Bristol snap.

In assembling the parts the spring is arranged upon the stud, the space between the end of the stud and the opposite cheek per mitting such introduction. The tongue is then introduced by passing it up through the loop until the hub comes to a position below the lugs I), as indicated in broken lines, Fig. 6, and in which position the opmiing inv the side of the hub may be permitted to pass onto the pivot. The tongue is now turned 'l'orward and upward into the recess and inside the lugs, as seen in Fig. (3. The opening in the side of the hub passes up over the stud, and the recess in the hub sets overthespring. The tongue is then turned forward and under the nose of the hook, and the spring will yioldiugly hold itin such position. The space between the two cheeks permits the tongue to be turned to one side sufficiently far to pass beneath the nose of the hook, so that the casting of the nose of the hook out of its natural plane, and bending it into that plane after the tongue is introduced, as in some manufacture, is avoided. The two cheeks are now forced toward each other to bring them close up to the sides of the hub of the tongue, as seen in Fig. 2, and so as to prevent the lateral displacement of the tongue.

Vhile Iprefer to cast a lug, 7), upon each sideof the recess, it will be understood that one may be omitted, as the remaining one will servevto prevent displacement of the hook after once properly set. By this construction the extent of bending the sides at the recess is I so slight that a break rarely occurs.

I do not wish to be understood as claiming, broadly, a snap-hook in which the tongue is constructed with a hook-like hub to embrace the pivot, as such, I am aware, is not new.

I claim- In a snap-hook, substantially such as described, the body constructed with a recess at its loop end to receive the hub of the tongue, 0 the said recess having a pivot cast upon one of the cheeks and extending transversely toward the other, but so as to leave a space between the end of the pivot and the opposite cheek,

and also with one or more lugs, 11, at the rear, 35, extending inward over said recess, combined with a tongue constructed with a hub adapted to enter said recess, and the tongue near the hub constructed thinner and so as to pass between the lugs into the recess, and the hub of 40 the tongue also constructed with a concentric recess upon one side. and with a pivot-open- I ing in the opposite side, the said opening extending radially outward and downward, and

a spring arranged on said pivot within the re- 45 cess, substantial] y as described.

GEORGE M. HUBBARD.

\Vitnesses:

JOHN E. EARLE, FRED. G. EARLE.

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