Harmsworth, Alfred Charles William, Sir, bart · London Bombay : Longmans, Green, and Co. · leaf 236
of the gear, in which case they are not spring held, butare moved from side to side by a lever—thus, in fig. 10 wehave two gear wheels, which may be of different sizes, runningon one shaft with a double clutch between them. By movingthe clutch over to the left, wheel a is held fast to and drivenbv… … between the two, both wheels are free and neither is driven.In another form of clutch, connection is made by expandingfriction rings on the inner faces of drums, fixed to the parts
Automobiles
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