. 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. hirdarm. Valve lead is made by the crosshead arm link and lever con-nected to the valve rod and link-block rod. ItaUan railway. STEA^r rOWER APPLTANXES. 95 209. REVERSING GEAR. The eccentric is provided with acurved rack near its periphery which meshes with a small pi
. 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. hirdarm. Valve lead is made by the crosshead arm link and lever con-nected to the valve rod and link-block rod. ItaUan railway. STEA^r rOWER APPLTANXES. 95 209. REVERSING GEAR. The eccentric is provided with acurved rack near its periphery which meshes with a small pinion. The pinion is secured to the end of ashaft provided with a groove dis-posed spirally for a portion of itslength. The shaft is journaled intwo collars or flanges keyed tothe main shaft so that the smallshaft lies parallel to the engineshaft. A third collar slidablymounted on the engine shaft isprevented from turning by asuitable key, this collar carrying the strap to which the reversing leveris connected. A pin in the latter collar engages the groove in thesmaller shaft and when this collar is shifted sidewise the pin causes thesmaller shaft to revolve, which turns the eccentric around on the engineshaft and thus shifts the position of the valve. 210. Longitudinal section, showing the spiral grooved shaft and 211. ENGINE STOPPING MECHANISM. If the governorbelt breaks, the weight N will drop, and through the system of levers and links throw the beli--^ crank lever B so as to shift the safety blocks on theknock-off cams of the valvegear and prevent the valvesfrom being opened by thegrab hooks. An auxiliary device is alsoprovided to act in the caseof racing. This consists ofa small centrifugal governorof the shaft type mounted in the belt wheel of the main weight w of this auxiUary governor is provided with a lip, which,in the event of abnormal speed, will be thrown outward so as to en-gage with a small Hp, O, on the end of the rocker arm shown. Theother
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
