US733921A - Snap-hook. - Google Patents

Description

' V. 1). SIBLEY;

SNAP HOOK.

APPLICATION FILED APR. 29. 1903.

N0 MODEL.

W/ TNESSES:

iPATENTED JULY 14,1903.

. VONDON D. SIBLEY, or roar HAMMOND, CANADA, Assienon or mann or VANCOUVER, BRITISH COLUMBIA, CANADA.

UNITED STATES v Patented July 14 1903- PATENT OF ICE.

TO PETER MCTAVISH,

SNAP-HOOK.-

sPEcIFIGATION forming part of Letters Patent No. 733,921, dated July 14. 1903. 1 1- Application fine April 29, 1903.

Serial No. 154,811. (No model.)

To all whom it may concern;

Beit known thatI,VONDOND.SIB LEY,acitizen of the Dominion of Canada, residing'at Port Hammond, in the Province of British Columbia, Canada,

' useful Improvement in Snap-Hooks, of which .of strength'with a minimum of weight.

thereafter crossed to opposite sides,

the following is a specification.

My invention relates to an improved snaphook designed so as to be simple and cheap to manufacture and to combine a maximum To attain these objects, I make the book from one piece of wire, without any further workon it than that of cuttingand bending. By such construction I avail myself of the greater weight-for-weight strength of wire than malleable cast-iron or drop-forgings, of which material these articles are commonly made, with the further advantage that the device hasin its own structure the necessary resilience to effect the closing of the hook without the requirement of hinge joints and independent springs.

Another point in my designis thereinforcement of strain on it from opposite sides, so that the flexure of one side checks that of the other.

lar view of it when opened by the "application of finger-pressurein thedirection of thearrows a. a; Fig. 3, a side elevation of the hook portion closed, and Fig. 4 a similar view of the same open.

- The attaching-eye of the device is by a doubleecoiled loop 2, and the formed wire is as 3 and I 4, and is then turned downward in slightlyone side, 3,being toward the end bent inward in single wire and curved back'to form a reversehook 5, the center ofwhichis on the center line of the device- 5. 6., in the line of strain. The opposite side 4. is bent to the same general conformation, but of course reversed, and the lower end is of double wire, enabling the hook 5 of the other member to pass freely between'th'e-dual memdiverging lines,

have invented a new and the hook end and the support of the posite direction of the other.

bore 6. The end 6 is bent downward,,fasat 7, and angled'back toward the center line,

enabling the crossover 7 or end of the loop to clear the movement M5 and form at the same timeian entering angle to guide to the opening when 'clasping. (See e in Figs. 2 and 4.) l

The doubled-up end of 6 is wound around Q the member 4 at 8 and is made into a crossloop 10, within which the member 3 is free to move, as in a guide, and at the outer end of which it is checked when in its normal position, the end of the wire being thereafter S6".

cured to, 4 by a turn 9.

In its normal position closed (see Figs. 1 and 3) the outward spring of the wire keeps the member 3 against the outer end of the guard-loop 10, in which positions the hook portions 5 and 6 of the opposing members 3 and 4 coincide and .form an'inclosing ring which will securely retain. anything placed within it and will' ofier not only the triple strength of the material to any pull, but owing to the flexure under strain of each portion being in opposite directions outward the tendency to straighten in one hook will be checked by the similar tendency in the op The doubling of one hook 6 to include the other, 4, also enables them to afford mutual support to one another under any tendency to spring or yield laterally.

When 3 and 4. are pressed together against the spring or resistance of the coil 2, as indicated by the arrows ct a, (see Figs. 1 and 2,) the hooks 5 and 6' areopened and a ready entrance is afiorded, the outside of the hook 5 and downwardly-turned end 7 of the-hook 6 (see Figs. 2 and 4) combining toform a. converging entrance-guide (see e'in Figs. 2 and 4) which facilitates attaching the hook to any suitable connection.

A careful consideration of the points mentioned will satisfy any-competent person that the hook possesses elements of strength. heyondwhat would at first sight appear, while it is securely locked on anything'it is connected'to, which can escape only by the bending or fracture of the members. The particular manner in which it is constructed from one piece of wire and the design which utiltion of the double .en t, is-

izes the coil of the eye 2 to give an efficient and durable spring are features which alone render my invention a novel and useful one.

I therefore declare that whatI claim as new, and desire to be protected in by Letters Pat- 1. A wire snap-hook comprising a spring portion forming an eye-ring; opposing lever members forming continuations thereof, the lower ends of which are formed into oppositely-bent hook members, one beingof dou ble wire between which the other is designed to pass, the openings of such hook members being to the outer side in each, so that in the normal or closed position, the opening'of one is closed by the hook portion of the other;- a loop secured to one of the lever members forming a lateral guide and check to the movement of the other, whereby the outward spring tendency is limited and the combinaand the single hook forms a retaining-eye. l I

In a wire snap-hook having a spring-coil eye, opposing lever members terminating in and the retaining-eye opened.

oppositely-bent hooks and a guide-loop to check the opposing hooks in their outward spring movement, so that they will normally form -aretaining-eye; the construction of one of the hooks of looped wire with a space between the loop to permit the passage of the single book, the end of the loop being bent back to form an entering-guide to within the hooks when. the levers are pressed together 3. -In a wire snap-hook made from one piece, the double-coil spring member 2, lever meni-. bers 3-and 4, one having the single hook 5 and the other one the double book 6, the downwardly-turned loopend 7, 7 on the d011- his book and the guide and-check loop 10. In testimony whereof I hai' e hereunto signed my name in the presence of two sub h scribing witnesses.

VONDON D. SIBLEY.

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