Safe load indicator for jib cranes

Details Safe load indicator for jib cranes Safe load indicator for jib cranes

1977-02-15

1978-07-04

Oresky, Lawrence J.

Traversing hoists

Overhead

Cable

340685, B66C 1348

Patent

active

040984109

ABSTRACT:
An overload warning device for use in a crane having a telescopic jib which includes, in a transmission between a slave jib and a pointer, a bank of cams each appropriate for a different length of jib, a common follower cooperable with the cams, and a selector mechanism operable automatically in response to change in the jib length for effecting relative movement between the follower and the cams to bring the follower into cooperation with the cam corresponding to the newly selected jib length.

REFERENCES:
patent: 3148659 (1964-09-01), Artken
patent: 3828339 (1974-08-01), Schedrovitsky et al.
patent: 3990584 (1976-11-01), Strawson et al.

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