US1144099A

US1144099A - Hoisting-hook.

Info

Publication number: US1144099A
Application number: US86064014A
Authority: US
Inventors: Lee J Black
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-09-08
Filing date: 1914-09-08
Publication date: 1915-06-22
Anticipated expiration: 1932-06-22

Description

L. J. BLACK.

HOISTING HOOK.

APPLICATION FILED SEPT. a. [914.

1,144,099. Patented June 22, 1915.

rns NoRRIs PETERS cov. WASHINGTON, n. c.

FTQE.

LEE J. BLACK, OF BEAUMONT, TEXAS.

HOISTINGr-HOOK.

Specification of Letters Patent.

Patented June 22, 1915.

Application filed September 8, 1914. Serial No. 860,640.

To all whom it may concern:

Be itv known that I, Lnn J. BLACK, a citi- Zen of the United States, residing at Beaumont, in the county of Jefferson and State of Texas, have invented certain new and useful Improvements in Hoisting-Hooks, of which the following is a specification.

This invention relates to hooks employed for hoisting purposes, and its object is to provide a novel and improved safety device which will effectually prevent the load from accidentally slipping off the hook, or the hook from becoming detached from the'load.

The invention also hasfor its object to provide a safety device of the kind stated which can be easily and quickly operated.

These objects are attained by means of a combination and arrangement of parts to be hereinafter described and claimed, reference being had to the accompanying drawing, in which- Figure 1 is an elevation, partly broken away, showing the safety device, and Fig. 2 is an edge View of the lower portion of the hook showing in dotted lines the safety device swung to open position.

I In the drawing, the shank of the hook is shown at 5, and the bill at 6. The shank is carried by a clevis or bail 7 to which it is swiveled. The swivel takes care of any twist in the hoisting line to which the clevis is attached, and it also enables the hook to be quickly and easily rotated to catch into the link or other object in which it is intended to be hooked. A ball-bearing 8 is provided to obtain a freely running swivel.

The safety device is a swinging latch bar 9 carried by a rotatable pin 10 passing transversely through the shank 5. The latch bar is made fast to one end of the pin, and to the other end of the pin is made fast a hand grip 11 for rotating the pin and thereby swinging the latch bar to open or close the hook. The latch bar is located on that side of the hook shank from which the bill 6 projects, and it is of such a length that it extends obliquely between the shank and the point of the bill, thus closing up the hook. Upon swinging the latch bar sidewise, away from the bill, the hook is left open to permit attachment to the load.

The hand grip 11 carries a sliding latch bolt 12 for locking the pin 10 against rotation when the latch bar 9 is in safety position. The latch bolt is slidably mounted in a transverse recess 13 in the hand grip, said recess opening through that side of the hand grlp which is contiguous to the hook shank 5, the latter having a keeper aperture 14: into which the forward end of the latch bolt is designed to enter. To the rear end of the latch bolt is pivotally connected, as indicated at 15, a trigger 16, which latter is pivotally mounted at 17 in a recess 18 in the back of the hand grip. The trigger has a projecting part 19 which extends from the back of the hand grip. A spring 20 is mounted in a recess 21 in the hand grip, and bears against the trigger in such a manner that it tends to swing the same in a direction to shoot the latch bolt forward into the keeper aperture. The part 19 now projects from the back of the hand grip, and upon taking hold of the latter and pressing against the part 19, the trigger swings in a direction to retract the latch bolt. The pin 10 is now unlocked and free to be rotated, and upon giving the hand grip a twist sidewise, the pin is rotated, and the latch bar 9 is swung away from the bill of the hook to open the same. By reversing this operation, the latch bar is swung back to close the hook.

The hook can be easily and quickly applied or detached, and when the latch bar is in closing position an efficient and reliable safety device is had. The natural position of the operator, as the hook comes down to unhook or to hook on, as the case may he, would be for him to catch the hook by the hand grip and to squeeze the latter. The hand would then press against the part 19, which unlocks the pin 10 as hereinbefore described. Thus, the safety device can be easily operated with one hand, and without any waste of time.

I claim:

1. The combination with a hoisting hook comprising a shank and a bill extending beyond one side thereof, of a hand grip on the other side of the shank, a rotatable pin passing transversely through the shank, to one end of which pin the hand grip is rigidly connected, and a latch bar rigidly carried by the other end of the pin and adapted to extend between the shank and the bill of the hook.

2. The combination with a hoisting hook, of a safety device comprising a swinging latch bar extending between the shank and the bill of the hook, a rotatable pin passing transversely through the hook shank and carrying at one of its ends the aforesaid latch bar, a hand grip connected to the other end of the pin for rotating the same, and a latch bolt carried by the hand grip, the hook having a keeper for said latch bolt.

3. The combination with a hoisting hook, of a safety device comprising a swinging latch bar extending between the shank and the bill of the hook, a rotatable pin passing transversely through the hook shank and carrying at one of its ends the aforesaid latch bar, a hand grip connected to the other end of the pin for rotating the same, a latch bolt carried by the hand grip, the hook having a keeper for said latch bolt, and means carried by the hand grip for operating the latch bolt.

4. The combination with a hoisting hook, of a safety device comprising a swinging latch bar extending between the shank and the bill of the hook, a rotatable pin passing transversely through the hook shank and carrying at one of its ends the aforesaid latch bar, a hand grip connected to the other end of the pin for rotating the same, a latch bolt carried by the hand grip, the hook having a keeper for said latch bolt, and means carried bythe hand grip for operating the latch bolt, said operating means having an actuating part projecting from the hand grip. V

5. The combination with a hoisting hook,

of a safety device comprising a swinging latchbar extending between the shank and the bill of the hook, a rotatable pin passing transversely through the hook shank and carrying at one of its ends the aforesaid latch bar, a hand grip connected to the other LEE J. BLACK.

Witnesses C. H. SAoNDnRs, H. J. 'WHITAKER.

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