. 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. g in a concentric slot as shown, which permitsthe bar to oscillate with the wrist plate without interfering with thegovernor rod. It will be seen that when the slotted bar operated bythe governor occupies the position shown, the valves have full travel,but when this b
. 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. g in a concentric slot as shown, which permitsthe bar to oscillate with the wrist plate without interfering with thegovernor rod. It will be seen that when the slotted bar operated bythe governor occupies the position shown, the valves have full travel,but when this bar is drawn toward the governor the ends of the hori-zontal links to which the valve rods are attached will be drawn towardthe hub of the wrist plate by the short vertical links, thus reducing theradius of the valve-rod connections which shortens the stroke of thevalves and consequently changes the point of cut-off in the cylinder. STEAM POWER APPLIANCES. 89 186. CORLISS VALVE GEAR and release mechanism, stand-ard type. A, valve stem. A bell crank operated by a connecting rod fromthe wrist plate, lifts the grab hook, E, and thevalve arm. An adjustable roller at R, releasesthe valve arm, which is pivoted to the dashpotfor regulating its fall. The release roller is oper-ated by the bell crank H, and rod Z, from ojrowpiST PUTE 187. CORLISS VALVE GEAR and release mechanism. Thegrab hook consists of a block, C, sliding in a grooved slot in the bell-crank lever B B, and normally forced out-ward by a spring. The block C carries apin, E, on the rear side, which is held incontact with a cam ring, F, having twovv--, ^iv^^.Jid^^-^^ knock-off dies, M and N, on its inside sur- face. As the bell crank moves in thedirection of the arrow from the positionshown, the roller on the pin E strikes thecam die N, and is forced rapidly inward,releasing the drop lever a. If from any cause the dashpot should failto act, the projection on the bell-crank lever would engage with thedrop lever
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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910
