Loose Driving Pulley

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“The belt is thrown on to set the machine in motion, the loose pulley is pressed aside by the spiral springs on the bolts, its rim entirely touches that of the fast pulley and helps to set this latter in motion by friction.” —Grimshaw, 1902


Grimshaw, Robert Modern Workshop Hints (Philadelphia, PA: Sampson Low Marston & Company LTD, 1902)


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