Bell crank at English => English (Websters 1913) Of Explained:

Bell crank \Bell" crank`\
A lever whose two arms form a right angle, or nearly a right
angle, having its fulcrum at the apex of the angle. It is
used in bell pulls and in changing the direction of bell
wires at angles of rooms, etc., and also in machinery.

Related words:

bell  bell 103  Bell and hopper  Bell animalcule  bell animalcules  bell apple  Bell arch  Bell bearer  bell book  bell bottoms  bell boy  Bell buoy  bell buoys  Bell Burnell, (Susan) Jocelyn  Bell cage  bell captain  bell captains  Bell carriage  Bell cot  bell cote  bell curve  bell curves  Bell deck  Bell founder  Bell foundery  Bell foundry  Bell gable  Bell glass  Bell hanger  bell heather  Bell jar  bell jars  Bell Laboratories  Bell Laboratories Bell Labs  bell labs  bell magpie  Bell metal  Bell metal ore  bell morel  bell out  bell pepper  bell peppers  Bell process  Bell pull  Bell punch  bell push  Bell ringer  bell ringers  bell ringing  Bell roof  Bell rope  bell ropes  bell seat  bell shape  Bell state  Bell system of control  Bell tent  bell the cat  bell toad  bell tower