Improvements in securing cranks, levers or arms onto shafts, axles or spindles and particularly in driving pedal crank sets for bicycles, motor-assisted bicycles, tricycles and the like

摘要

782,325. Securing elements to shafts. BEZET, B. B. Dec. 19, 1955 [Sept. 28, 1955], No. 27558/55. Class 80 (2). Means for securing cranks, levers or arms, and particularly cycle pedal cranks, to shafts, axles or spindles consists in forming the shaft end A of an obliquely cut non-circular crosssection to engage in a corresponding hole in the crank D and securing it by an obliquely cut locking member B of similar cross-section to the shaft end A clamped by a central bolt or screw C.