Worm reducing gear

摘要

This worm reducing-gear of relatively reduced dimensions has associated therewith in a same and single gear case two gear trains, namely a primary reducing-gear driven from the input shaft or motor, and an intermediate reducing-gear disposed between said primary gear train and the worm of said worm reducing-gear; the gear case comprises two halves and all the bearing-receiving cavities thereof, except those of the crown-wheel shaft, are formed in the joint plane along which said case halves are assembled. Clutch means may be provided between said primary and intermediate reducing-gears and the worm-gear proper for changing the worm speed or braking the mechanism.