. 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. 372. AIR-OPER-ATED HYDRAU-LIC CRANE. Com-pressed air pressure ina supplementary cyl-inder forces the waterinto the lifting cylin-der. A water valvegoverns the flow ofwater and holds theweight steady orlocked by closing thevalve. 152 AIR-POWER MOTORS AND 3
. 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. 372. AIR-OPER-ATED HYDRAU-LIC CRANE. Com-pressed air pressure ina supplementary cyl-inder forces the waterinto the lifting cylin-der. A water valvegoverns the flow ofwater and holds theweight steady orlocked by closing thevalve. 152 AIR-POWER MOTORS AND 373. VALVE-LIGHT VENTI-LATOR. The valves are of glass set inframes and hung to swing, controlled byconnecting rods to a vertical pole extend-ing down within reach of the hand. 374. FRUIT-DRYING APPARATUS. A box, a, arranged for receiving perforatedshelves or netting on frames. A fresh-airinlet, g, and heating chamber, c, under whicha lamp is placed. A deflecting plate, h, tospread the warm air evenly through the boxand another at the top for gathering the airto the ventilator (? / w, a thermometer. Tem-perature should be 100° Fah. SECTION IX. GAS AND AIR-GAS DEVICES, ETC. 153 Section AND AIR-GAS DEVICES, ETC. 375. KEROSENE PORTABLE FORGE. French. The ap-paratus consists of a copper reservoir, P, containing the petroleum, and traversed by a pump, C, whichserves to establish a pressure of air atthe surface of the liquid. Above thereservoir, and separated therefrom by ahorizontal disk, U, forming a screen toprevent the heating of the reservoir, isplaced the stove, so called. In t
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