US340558A

US340558A - Maschil d

Info

Publication number: US340558A
Authority: US
Publication date: 1886-04-27
Anticipated expiration: 1903-04-27

Description

(Model.)

M. D. CONVERSE.

SNAP HOOK.

Patented Apr. 27, 1886.

N, Pm'zns, Fholomhognpher. Wilmington. D. C.

NlTED STATES ArnN'r OFFICE.

MASCHIL D. CONVERSE, OF .YONKERS, NEW YORK.

SNAP-HOOK.

-=%PECJEFICATION forming part of Letters Patent No, 340,558, dated April 27, 1886.

Application filed June 16,1884. Serial No. 134,053. ()l'ollel.)

To aZZ whom it may concern.-

Be it known that I, MAsoHI-L D. OoNvnnss, a citizen of the United States, residing at Yonkers, in the county of \Vestchester and State of New York, have invented newand useful Improvements in Snap Hooks for Harness and for other Purposes, of which the following is a specification.

The object of my invention is to provide a snap-hook which will under all circumstances maintain a grasp of the ring or other object to which it is hooked, but whichcan be instantly attached or detached when required. I attain this, as will be more clearly understood by reference to the accompanying drawings, forming part of this specification, first, by constructing my snaphook in two similar parts or halves, the one inverted upon the other and secured by a pivotal rivet; and, second, by the use of branches, branching off from the shanks and extending beyond and at or about right angles to the point of the hook of each of the halves, which together are adapted to keep the snaphook from becoming accident ally disengaged from the ring, as will hereinafter appear.

In the drawings, Figure 1 is a side view of my snap-hook complete, caught upon a ring, the dotted lines showing various positions of the same respectively, the thumb and indexfinger of the hand represented in the same figure showing the manner of grasping the snap-hook when required to disengage it from the ring; Fig. 3, a side view of one half of the snap-hook, the dotted lines in the same figure showingaccidental positions of the snaphook and the ring; Fig. 2, an edge view of the halves of the snap-hook separated and the pivotal rivet.

Similar letters indicate corresponding parts in the several figures. Y

A is the shanks of the halves of the snaphook, and B the branches; 0, the hooks; D, the pivotal rivet; E, the eye; F, the stops; h, 71. h h' If, the ring in different positions, and H a position of the ringhereinafter referred to.

The operation of my snap-hook is as follows: Grasping it in the manner shown in Fig. 1, the lips G are pressed forward against the ring h, and opened to receive the latter by pressing the thumb and index-finger toward each other, one of the halves of the snap-hook swinging oil into the position shown by dotted lines in the same figure. When the ring comes to the position h", and the stops F strike the shanks A, a continued forward thrust causes the hook of the half before swung off to swing back again by the ring pressing into the fork of the branches B, where they cross each other, until the hooks C are in the position they were when starting, and the ring has reached the position 71 Forward movement being now stopped, the hooks drop upon the ring, leaving the latter in the position shown by H. It will. be observed that forward pressure against is the only condition required to attach the.

snap-hook to the ring. Now, to detach it, it may be either pushed steadily forward against or hold slightly taut on the ring, the latter being the preferable method; but two other conditions are also necessary, and must be simultaneous with the former before it can be disengaged, as will appear. Therefore to de tach the snap-hook from the ring, grasp it in the manner shown in Fig. 1, with the thumb and the index'finger, respectively, upon the stops F; pull the snap-hook slightly on the ring; then press the thumb and finger toward each other quickly. This causes the branches of the snap-hook to force the ring back toward the hand till it will pass round the points of the hooks to the position 71? and out. It is shown, therefore, that sinuiltaneous pressure upon respective stops F, and the holding of the snaphook taut on the ring, (to use the preferred method,) must occur beforeit can be disengaged, as above stated, since, as shown in Fig. 3, if pressure be brought upon one side only-as, say, at the arrow-the ring would assume the position h, and if continued till the stops F reach the shanks Athe branch of the opposite half of the snap-hook would lock the ring into the last-cited position, and then if pressure be brought to bear upon the other stop also, or sinuiltan'eously upon the outside of the hooks at y c, the fork formed by crossing of the hooks at another point would force the ring from position h around their points ultimately to the proper position, (shown by H in Fig. 1,) with the snap-hook in the normal. position. (Shown by the full lines in. the same figure.)

In the manufacture of this snap-hook, if of consisting of the shanks A, secured by a pivcast malleable metal, the parts do not require otal rivet, D, provided with branches B, con- 10 to be seriously bentin the fitting; consequently structed and operating substantially as and for the native strength is retained unimpaired. the purposes set forth.

5 Having described my invention, what I MASOHIL D. CONVERSE.

claim as new, and desire to secure by Letters Vitnesses: Patent, is- F. O. MoOLEARY,

The improved snap-hook herein described, V. P. SMITHQ