US943220A

US943220A - Detachable link.

Info

Publication number: US943220A
Application number: US43390008A
Authority: US
Inventors: John Dufour
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-05-20
Filing date: 1908-05-20
Publication date: 1909-12-14
Anticipated expiration: 1926-12-14

Description

J. DUPOUR.

DETAGHABLE LINK.

APPLICATION FILED MAY 20, 190B.

943,2QQ Patented Dec. 14, 1909.

WITNESSES ments in detachable links or the like, and is full, clear, and exact Uhllldl) STATES JOHN DUFOUR, OF THE DALLES. OREGON.

nE'rAo'HA'BLn LINK.

sas es.

To all whom "it may concern:

Be it known that I, JOHN Durona, a citizen of the United States, residing at The Dalles, in the county of Wasco and State of regon, have invented certain new and useful Improvements inDetachable Links; and I do hereby declare the following to be a description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain improvenitended as a self-gripping device or snap hook to be used on chains, harness tugs, bridle reins, lifting cranes, and blocks and tackle, although it is susceptible of a variety of other applications in devices where there desired a safe, strong, and absolute gripping connection, and at the same time an easy method of releasing.

[in object of my invention is to provide a device of the cha'acter just mentioned, which possesses the greatest resisting strength possible, the parts being so related that the strain of the load is distributed equally throughout. A turther object is the provision of a gripping device the parts of which are adapted to be held automatically in normal or holding position, and which grip instantly when any weight them.

Other objects and advantages'will appear from the description as set forth in the specification hereinafter, and pointed out in the claims.

in the drawings hereto appended Figure 1 is a side elevation of the device in closed position. Fig. 2 is a top plan view of the device in open position. Fig. 3 is a top plan View of the device in Figs. 4 and 5 are detail views of the gripping jaws,

Referring more particularly to the several views, in which like characters of reference refer to corresponding parts in the different figures, A, A designate the gripping jaws, which are pivotally connected, as shown by or pull coines upon lugs u, {L1, on the jaw A. These lugs eniparts being sebrace an ear 6 on jaw A, the

ured together by a suitable pin 0. The

jaw A has an angular rear arm or lever (Z winch is provided with a slot e. The jaw A is formed at 1ts rear end into a neck f, the angle, of which corresponds to that of arm closed position.

Specification of Letters Patent. Application filed May 20, 1908.

l l, a f

l f i l I l i l a l I l I l l I "U e n: re JL hi in A -L kjdllxie Patented tier. it,

HEM Serial No. 433,900.

The neck 7' is arranged for movement in slot 0, and is provided with an enlarged head g. A spring it is suitably secured to one of the jaws, its free end abutting the other jaw, andcll'ecting, normally, a closing of the Ridgcsor teeth '2' are cut into the jaws to enable the device to be employed for the purpose of gripping a circular pipe or the like. The jaw .U is provided with an abutment which is adapted to engage the recess 7;, and serve to hold the jaws firmly in locking position.

B is a ring, for connecting the device to the chain or other instrumentality with which itis being employed, such connection being bad through a ring C swivcled to ring 13. It will be apparent that when there is a strain or load on the ring C, the jaws will be absolutely prevented from separat ing by reason of ring R engaging and ford ing the head g to the extreme end of slot 0, although the spring It has sutticient power under normal conditions, to force the jaws to closed position and grip a member, even though no pull is exerted on the rim G. hen it is desired to release the jaws, it is only necessary to separate the rear ends against the tension of spring 72, which can be accomplished very quickly and readily.

I have disclosed the invention in a form which includes my preferred embodiment, but 'arious changes and departure may be made in the present structure, and still be comprehended by the spirit of the invention.

lit

What T desire to secure by Letters-Patent, and claim, is

1. A. device of the character described in cluding a pair of gripping jaws, rearvvardly extending arms carried thereby, one of said arms being provided with an opening adapted to receive the other of said arms, and a spring positioned between the arms and serving to hold said jaws normally closed.

2. A device of the character described including a pair of gripping jaws, rearwardly extending arms carried thereby, one of said arms being arranged to project constantly through an opening in the other arm.

3. A device of the character described ineluding a pair of gripping jaws, re'arwardly extending arms carried thereby,v one of said arms being constantly in engagement with a slotted portion of the other arm, and an enlarged head carried by the tirstn'icntioned arm.

4-. A device of the character described iulit) ' tending arms carried by the jaws, one of said eluding a pair of gripping arms, lugs ear- I In testimony whereof, I afiix my signaried by one of said jaws and embracing an ture, in the presence of two subscribing Wit- 10 ear 0n the other jaw, a spring for holding nesses. said jaws normally closed, rearwardly eX- JOHN DUFOUR.

arms being arranged to engage a slotted por- \Yilnesses: tron 1n the other arniand an enlarged head GUssm Rosnnsrnm, carried by said first mentioned arm. 1 D. S. DUFUR.