US271116A

US271116A - Safety-hook

Info

Publication number: US271116A
Authority: US
Publication date: 1883-01-23
Anticipated expiration: 1900-01-23

Description

(-No Model.) 2 Sheets-Sheet 1. W. K. RAIRIGH.

SAFETY HOOK.

No. 271,116. PatentedJanQZS, 1883.

(No Model.) 2 Sheets-Sheet 2.

W. K. RAIRIGH.

, SAFETY HOOK.

No. 271.116. Patented Jan.23, 1.883.

NITED STATES PATENT OFFICE.

IVILLIAM K. RAIRIGH, OF ST. PETERSBURG, PENNSYLVANIA.

SAFETY-HOOK.

SPECIFICATION forming part of Letters Patent,No. 271,116, dated January 23, 1883. Application filed September 13, 1882. (No model.)

.To all whom it may concern Be it known that I, WM. K. RAIRIGH, of St. Petersburg, in the county of Clarion and State of Pennsylvania, have invented a new and Improved Safety-Hook; and I hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this Specification, in which- Figure 1 is an elevation of the hook closed. Fig. 2 is an elevation showing the hook opened. Fig. 3 is a view of the swiveling ring detached from the hook. Figs. 4, 5, 6, 7, 8, and 9 are details to be referred to. Fig. 10 is a longitudinal sectional view.

'My invention relates to that class of hooks known as safety-hooks, and has for its object to provide a hook to beused for a great variety of purposes, which will, when engaged, have no tendency to automatically disengage, and which will throw from its jaws automatically when opened any ring or other device which has been in engagement with it.

My invention consists in a double-jawed hook, onejaw of which is bifurcated at the end to fit over the other jaw, which is centrally longitudinally grooved to contain a disengaginghook, which swings upon trunnions in the bifurcated jaw.

My invention further consists of sundry details of construction, as hereinafter fully described and specifically claimed.

My invention further consists in the combination, with asafety-hook, of a divided ring swiveled to said book by a headed shank and a bifurcated keeper, as is hereinafter fully set forth.

In order that those skilled in the art may make and use my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawings, A is the main hook, having the hollow butt a, having circular depressions l and 2 to receive studs 3 4, projecting from sections B G of the bifurcated hook. Along the sides certain portions, be, of hook A are cutaway, forming faces bc, against which the edges ofthe bifurcated hook abut when the hook is closed.

Within a longitudinal slot, d, in the main hook A is located a hook, D, which is swung on trunnions d, which enter the shell of the a raised rib, e e, 'on piece B, to separate pieces B and 0, thereby forming a chamber between them, in which the pivotal end of book D freely moves eccentric-allyto the movement of the bifurcated hook. The movement of the bifurcated hook is limited by a projecting stud, 7, on the rear end or butt, a, the said stud being aportion of a bifurcated stud or keeper, E, which is inserted transversely in the butt, for a purpose hereinafter described. The movement of hook D and its length are so regulated that when the bifurcated hook is opened to its fullest extent hook I) has traveled up to and flush with the end of book A, so that whatever hook, 8, or other object lies within the hook A it is forced out ofthe bight of said hook and detached therefrom. (See Fig. 2.)

Around the recess 2, leaving only a rib, 9, between, is a groove, f, in which lies a coiled spring, one end engaging projectionj in hook A, and the other end engaging with projection j, so that the opening of the hook distends the spring, and upon the book being released it snaps to.

In the end of the hollow butt is inserted the shank H of a divided hook, I, and near the end of the shank is a groove, Z, which, when the shank is inserted into thebutt, comes opposite a transverse slot, E, through the butt, and into which slips the bifurcated stud or keeper E, the legs of which straddle the shank H in the groove 1, and prevent the shank from being withdrawn, though it can turn freely, thereby making a swivel-connection. The division in the ring I is so cut that when the shank is engaged in the butt by the key or keeper E the radius of travel of the hinged portion is so long that it cannot move on its pivot 12, because of being arrestedin its movement by being brought against the end of the hollow butt.

When it is desired to secure this safety-hook to a bar or link the ring is opened to insert it 5 by the following means: The bifurcated hook is raised, and piece (which, whenthe hook is closed, covers a portion of the outer end of E) uncovers the keeper or key E, which being withdrawn allows the withdrawal of shank H. ID The link I is then opened, and the ring-bar or linkiuserted, the shank H replaced in the butt, and key E inserted.

Having thus described my invention, what I claim as new, and desire to secure by Letters 1 5 Patent, is

' l. The main hook A, provided with the rib 9 and interior recess, and recess 1, and offsets b b c,in combination with the bifurcated hook B 0, having the

studs

4 and 3, substantially as set forth.

2. The main hook A, provided with a longitudinal central groove, in combination with the hook D, located in said groove, and the bifurcated hook B G, to which hook D isjournaled at 5, substantially as and for the purpose described.

3. In combination with a safety-hook, sub-- sta ntiall y as described, the divided ring I, provided with a shank, H, having groove 1, and the bifurcated key E, all constructed, arranged, and operated asset forth.

4. The bifurcated key E, provided with the projection 7, in combination with hook B G and grooved shank I, whereby hook B 0, when closed, keeps key E in place, substantially as 3 5 described.

WILLIAM K. RAIRIGH.

Witnesses:

H. B. APPLEWHAITE, E. J. REDMoND.