Safe load indicator for jib cranes

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

B - Operations, Transporting

66

C

73/168, 212/41,

B66C 13/48 (2006.01) B66C 23/90 (2006.01)

Patent

CA 1090440

ABSTRACT OF THE DISCLOSURE An overload warning device of the type specified for use in a crane having a telescopic jib which includes, in the transmission between the slave jib and the second 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.

271792

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