. 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. 234 GEARING AND GEAR MOTION, 602. STOP-GEAR MOTION. B is the driving gear, with a loose sector, A, held to its forward positionby a light spring to catch the teethof the driven pinion and hold themin position to mesh with the teeth ofthe driving gear when its st
. 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. 234 GEARING AND GEAR MOTION, 602. STOP-GEAR MOTION. B is the driving gear, with a loose sector, A, held to its forward positionby a light spring to catch the teethof the driven pinion and hold themin position to mesh with the teeth ofthe driving gear when its stop at Dreaches the sector. The stop is dur-ing the traverse of open space throughwhich the sector moves. 603. Right hand figure shows commencement of the stop motion,which ends when the stop, D, reaches the sector. 604. VOLUTE TAPPET GEAR. A pinion of the smallest num-ber of teeth, consisting of two spiral teeth so curved that the point of / one tooth engages with the friction roller of the next tooth while the preceding roller is en-gaged with the opposite tooth of the alternate roller teeth are on opposite sidesof the roller gear, and the pinion teeth areoffset to match them. 605. GEARED REVERSING MOTION. Broken sections of teeth on a pair of bevel gearsalternately reverse the motion of a bevel pinion. Guide fingers are necessary in this class
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