. 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. 616. PARALLELISM FROM CIR-CULAR MOTION. A central pulleywhich is stationary and belted to a pulleyof the same size, but loose on an arm re-volving around the stationary pulley, willhave an indicator arm on the movingpulley always in the same direction. An idler pinion
. 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. 616. PARALLELISM FROM CIR-CULAR MOTION. A central pulleywhich is stationary and belted to a pulleyof the same size, but loose on an arm re-volving around the stationary pulley, willhave an indicator arm on the movingpulley always in the same direction. An idler pinion on the arm between twoequal gears will also produce the sameeffect on revolving the arm and indexwheel around the central gear wheel. 617. CIRCULARLY VIBRATING MOTION. A ring plate pin-ioned to three gears drivenby a central gear, or a rightand left screw worm, lefthand figure, will swing thering plate in a circle equalto twice the distance ofthe wrist pins from thecenter of the gear 618. DIFFERENTIAL SPEED GEAR. A speed gearing in whicha center pinion driven at a constant rate of speed drives directly and at different rates of speed a seriesof pinions mounted in a sur-rounding revoluble case orshell, so that by turning theshell one or another of thesecondary pinions may bebrought into operative relationto the parts to be driven there-from. C, a stop for locating eachspeed pinion. Each shaft of the pinions, F, F, F, carries below the plate a gear ofuniform size, E, which alternately meshes with the driven wheel by thedifferent positions of the shell.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
