Speed control for gravity operated trolleys

Details Speed control for gravity operated trolleys Speed control for gravity operated trolleys

B - Operations, Transporting

61

B

198/12.017

B61B 3/00 (2006.01) B61B 13/04 (2006.01)

Patent

CA 1158192

SPEED CONTROL FOR GRAVITY OPERATED TROLLEYS Abstract of the Disclosure A gravity operated conveyor comprises a work- piece supporting trolley having at least two independent unpowered wheels for supporting the trolley on a track. One of the wheels engages the track when the trolley is empty and the other engages the track when the trolley is loaded with a workpiece. Each wheel has a speed re- tarding mechanism operably connected therewith so that the speed retarding force on the trolley is greater when the trolley is loaded than when the trolley is empty. ------------ o -----------

381077

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