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Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries (1910)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The N. W. Henley publishing company · leaf 248

An illustration from Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries, 1910, leaf 248
638. THE DEAD CENTER PROB-LEM. The crank pin is held off the cen-ter by the spring J, the tension of whichalways pushes the crank pin off the center.Shows the action of a single treadle in■> the two extreme positions. 639. THE DEAD CENTER PROBLEM.A supplementary crank set at an angle with… … 640. CRANK SUBSTITUTE. The shaft to bedriven has recesses in which are pawls or frictiondevices, two rings being placed on the sleeve hav-ing internal ratchets when pawls are used, whilebands are connected to the rings and to a frame sothat when the frame is moved downward one of therings on the…

Mechanical movements

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