US1041399A

US1041399A - Automatic safety-hook.

Info

Publication number: US1041399A
Application number: US64459311A
Authority: US
Inventors: Austin C Adams
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-08-17
Filing date: 1911-08-17
Publication date: 1912-10-15
Anticipated expiration: 1929-10-15

Description

A. C. ADAMS.

AUTOMATIC SAFETY HOOK. APPLICATION FILED AUG.17, 1911.

QLSQQ Patented Oct. 15, 1912. t

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AUSTIN ADAMS, OF LEBANON, OHIO.

AUTOMATIC SAFETY-HOOK.

Specification of Letters Patent.

Patented Oct. 15,1912.

Application filed August 17, 1911. Serial No. 644,593.

To all whom it-ma/g concern:

Be it known that I, AUSTIN C. ADAMS, a citizen of the United States, residing at Lebanon, in the county of \Varren and State of Ohio, have invented certain new and useful lm n'm'ements in Automatic Safety- Hooks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to automatic hooks, and more particularly to hooks which may be employed upon a clevis, was a grapple hook and for many other purposes.

An object of the invention is to provide an automatic safety hook which will be of simple construction and which will be effective and positive in the performance of its duties. 4

Another object is to provide a hook having opposite jaws pivoted at their inner ends to a turn block, said jaws being adapted to be swung toward and ass one another when the hook is in closed orm.

Another object is to providean automatic safety hook of this character, both jaws of which serve to hold a link of a chain, a snaphook, or the like, the jaws being adapted to be swung to various positions to equalize the strain upon the jaws.

Another object is to provide a hook of this character having means for preventing the.

jaws from separating accidentally.

Another object is to construct a hook of this character which will be of simple form and which may be manufactured at a small cost.

Other objects and advantages will be ap parent from the followingdescription, taken in connection with the accompanying drawings, and it will be understood. that I may make changes in the specific structure without departing from the spirit of the invention as claimed.

In the drawings: Figure 1 is a perspective view of the complete device, Fig. 2 is a side view thereof, parts being shown in section, and the jaws in open position, and Fig. 3 is a side elevation, the handles being broken away.

Referring particularly to the drawings, 1 represents the block, preferably a swivel block having a neck 2 projecting therefrom to be received within theconnecting portion 3 of the arms or handles 4, the neck haying an enlarged head. 5 to prevent casual Withdrawal of said neck from the connecting portion 3. Projecting in an opposite direction from the swivel block 1 are the parallel walls 6 between which are pivoted the inner ends of the aws 7 which are preferably curved and are pivoted'by means of the' pivot pins 8 passing through the inner ends.

thereof, and through the walls 6. The ins 8 are spaced some distance apart to aFl the free and independent swingingmovement of each jaw 7 upon its respective pivot pin 8. The outer edges of the walls 6 are cut in the form of an arc of a circle, as shown at 9, to present a substantially circular opening when the jaws are in overlapped or closed position, as shown in Figs. 1 and 3.

The jaws 7 are each curved or bentto avoid one another and allow the outer ends thereof to rest against the curved side edges of the walls 6, thus limiting the movement of the jaws 7 when being sprung to closed position. The movement of-the jaws 7 in the opposite directions, when being swung away from one another, is limited by the object and resting against the curved side edges of the walls 6, as will be clearly understood.

When it is desired to lock the jaws 7 positively in closed position, the spring latch members or bars 10 are employed. The latch bars 10 have opposite ends riveted or otherwise secured to the side edges of the walls 6, while their free ends are enlarged and provided with the rigid or integral latching fingers 11 which are pointed and adapted for engagement within suitable recesses near the free ends of the jaws 7, against which free ends the outer or latching ends of the spring lapped bars are re siliently engaged when the jaws 7 are in closed positioin It will thus be seen that I have provided an automatic safety hook which will be positive and effective in use,and which may be employed for various purposes. It will be evident that as the parallelhandles or arms 4 are provided with suitable perforations they may be readily secured upon the end of a plow' beam for the purpose of 'utilizing the device as a clevis. It will also be evident that the arms 4 will ellectively serve as means for coi'mecting the hook to various objects or hoisting mechanism and etc. If desired, however, the arms t may be dispensed with and the swivel block 1 secured by means of the neck portion 2, directly to hoisting or other mechanism, asv will be clearly apparent.

Owing to the extremely small number of parts in this device and the simple formation thereof, the cost of manufacturing the hook will be extremely small.

What I claim is: i

An automatic safety hook comprising a swivel block, parallel walls projecting from to agree with the curved jaws to present a circular opening when the hook is in closed position, said aws being" bent to avoid one another when I'll closed positlon, and allow the free ends thereof to rest against the side edges of the Walls, and means adapted for engagement with the free-ends of the jaws for automatically locking the jaws in closed position.

In testimony whereof I have signed my name to thisspecification in the presence of twosubscribing Witnesses. v

' AUSTIN C. ADAMS, Witnesses: v

JAMES GUSTIN, ALTON F. BROWN.