bell crank

bell crank

noun Machinery.
a lever or rocker having two arms meeting at a pivot at a right angle, used for transmitting motion between two parts meeting at an angle.

Origin:
1880–85

bell-cranked, adjective
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World English Dictionary
bell crank
 
n
engineering a lever with two arms having a common fulcrum at their junction

Collins English Dictionary - Complete & Unabridged 10th Edition
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