US241010A

US241010A - Snap-hook

Info

Publication number: US241010A
Authority: US
Publication date: 1881-05-03
Anticipated expiration: 1898-05-03

Description

Modem W. B. HAYDEN.

Snap Hook.

Patenfed May 3,1881- liaa'enioir N. PETERS. Fholo ljlh0gmphan Wfl-Shinglun. D. C.

' NiTsn STATES ATENT FFICE.

'WILLIAM B. HAYDEN, ()F COLUMBUS, OHIO.

SNAP-HOOK.

SPECIFICATION forming part of Letters Patent No. 241,010, dated May 3, 1881.

Application filed December 30, 1880.

To all whom it may concern:

Be it known that I, WILLIAM B. HAYDEN, a citizen of the United States, residing at O0- lumbus, in the county of Franklin and State of Ohio, have invented new and useful Improvements in Snap-Hooks, of which the following is a specification.

My invention, which relates to snap-hooks, is designed to improve upon the class of such devices in which efforts have been made to guard against lateral displacement of the spring which forms the tongue, and also to so improve the construction that the spring may be easily replaced when broken in use.

My improvement relates to certain details of construction in the shank of the hook and spring, and the mode of securing the spring, which will be fully and clearly described hereinafter, so that any person skilled in the art may make and use the same.

In the drawings, Figure 1 is a perspective view of the main portion of a snap-hook with the spring unattached, and the flange at the intersection of the loop and shank, and which covers the heel of the spring in a vertical position. Fig. 2 is a plan view thereof, with the spring secured to the shank; and Fig. 3 is a perspective view of the completed hook, the flange in this view being turned down.

Aindicates the shank of the book, which is, as usual, formed intermediate of the hook and the strap-loop. The shank consists of a fiat body of metal, widest at the point adjacent to the loop and gradually diminishing in width toward the point of the hook, or substantially triangular in form.

The book B is of the usual form, and is recessed on the under side of the back to form a seat for the free end of the spring. I

In forming the hook, shank, and the straploop 0, the strap-loop is provided with a "ertical flange, D, which projects from that one of its longest sides which is adjacent to its junction with the shank, one side of the said flange being made to form a continuation of the inner face of this longest side d of the strap-loop, as shown in Fig. 1. This flange is about equal in length to the length of the loop, and also equal in length to the widest part of the shank, the reasons for which will presently appear.

E indicates the spring, which is made of the (Model.)

same form and width as the shank of the hook, so that the heel thereof is of the same width as the flange D, against which it is to rest. A portion of the heel of the spring is designed to rest upon the flat. shank, and for this purpose, as well as to facilitate its adjustment and attachment, is bent for a short distance and rises at an angle from the bent portion to its free end, where it rests in the recess on the under sideof the beak of the hook. The shank of the hook is centrally perforated at a point a little distance from the flange D, and the heel of the spring is correspondingly perforated, so that in securing the spring but a single rivet is necessary to unite the two. This mode of securing the spring to the shank avoids weakening either the spring or the shank unnecessarily, and as the parts are united by an independent rivet instead of forming a stud or rivet integral with the shank, it the same should become worn or broken it can readily be replaced by another, or it the spring should be broken by any means it can be readily replaced, whereas where the stud or rivet is integral with the shank and becomes broken it necessitates the throwing away of the parts.

The spring is first set up against the flange, and then the single rivet passed through the perforations in the spring and shank, as shown in Fig. 2, and upset on the under side. The flange is then bent over and forced down upon the heel of the spring, so as to extend over it and prevent any lateral play of the spring, or its disengagement from the beak of the hook. The flange being the full width of the spring, the entire end and corners of the latter are concealed, leaving no unsightly corners, and producing a neat and finished article; and, further,

there can be no danger of any lateral play of the spring.

In casting the body of the hook of the form described no core is necessary for the production of a device intended to prevent any lateral play of the spring-tongue after the parts are secured together, and the flange forming a broad hearing or abutment for the heel of the spring, it will remain in place during the riveting process, and the free end of the spring will not be shifted to one side or the other of the beak of the hook.

The operation of riveting the spring to the shank is also greatly facilitated by making the shank perfectly flat at the point where the spring is riveted, instead of providing an inclined projecting seat (as has been formerly done) and bending the spring at the heel to give it the proper inclination.

By this relative form and construction of the parts it is next to impossible to rivet the spring to the shank without having the two to coincide, so that the free end of the spring will rest squarely in the beak of the hook, while with the inclined seat it is difficnlt to secure the spring in line with the point of the hook, as it will turn laterally to one side or the other.

Prior to my invention a halter-clamp has been made in which the spring is bent and its widest portion held against an abutment and then secured by two rivets. In such instance the use of the two rivets weakened the spring, and no provision was made for holding the head of the spring. In another instance a narrow straight spring in a snap-hook has been seated in a recess in the strap-loop and secured by a single rivet, and a loop or bridge employed to prevent lateral displacement but in such case a core was necessary in casting; and in another instance a seat and flan ge have been formed at the juncture of the shank and the strap-loop and a stud formed upon the seat. The spring with a hole in the end was fitted upon the stud and the flange forced down; but to prevent lateral displacement two lugs or guards were formed upon the shank at a point between the strap-loop and hook. In such case the side guards were relied upon to prevent lateral play, and, as before intimated, when the stud became broken by any means, the parts had to be thrown away, as the stud could not be replaced. I disclaim these different forms; but,

Having fully and clearly described my improvement, what I claim as new, and desire to secure by Letters Patent, is-

A snap-hook consisting of the strap-loop at one end and the hook at the other, an intermediate substantially triangular fla-t shank, havingasingle hole orperforatiomas described, and a flange at the intersection of the shank and loop, and having a spring of the same form as the shank, bent at its heel, and united to the shank by a single rivet, and held from lateral displacement by the flan ge, as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscril'iing witnesses.

\VILLIAM 1- II AYDEN.

Witnesses: V

LORENZO 1). HAGERTY, E. K. STEWART.