Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1979-07-11
1981-10-06
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
24241PS, B66C 136
Patent
active
042931568
ABSTRACT:
This load hoisting hook is adapted to meet the requirements of automatic safety locking devices while facilitating its actuation with both heavy and light loads and comprises essentially two members, namely a suspension ring formed with a shank, and a hook proper of which one end normally engages the end of the shank as a consequence of the locking engagement produced between the opposite arm of the hook with respect to the ring due to the penetration of the end of a sliding lock bolt into a blind hole formed in the hub-like central portion of the ring which is encompassed by a fork-like extension of the opposite arm, the pivot member interconnecting the ring and hook portions of the device passing through the fork and the hub-like portion and having its axis off set laterally in relation to the axis of the cable attached to the ring, the lock bolt being actuatable by means of a trigger movable in a recess of the grip-handle forming hook body, or by a member secured inside the hook at the end of the lock bolt.
REFERENCES:
patent: 1144099 (1915-06-01), Black
patent: 1390023 (1921-09-01), Coon
patent: 1554303 (1925-09-01), Smith
patent: 1618321 (1927-02-01), Woods
patent: 1956786 (1934-05-01), Bemis
patent: 3940173 (1976-02-01), Ulbing
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