. 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. VALVE IN WIDE OPEN POSITION i66. BALANCED VALVE for steam engine. Wilson type. Pressuresare equalized by steam pressure underthe riding plate. Valve has double ad-mission and double exhaust ports. Thethree sections show the positions of thevalve when opening, wide ope


. 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. VALVE IN WIDE OPEN POSITION i66. BALANCED VALVE for steam engine. Wilson type. Pressuresare equalized by steam pressure underthe riding plate. Valve has double ad-mission and double exhaust ports. Thethree sections show the positions of thevalve when opening, wide open, andexhaust opening position. 167. Wide open position, takingsteam under the balance 168. Position of valve at exhaustopening of both cylinder and balanceplate. VALVE IN EXHAUST OPENING POSITION 169, NOVEL PISTON VALVE for a steam engine. A sideelevation, partly in section, of the valve and its casing, and a longitu-dinal sectional elevation. Thevalve consists principally of a re-Hef valve held seated by a spring,but exposed at the opposite sideto the pressure of the steam, sothat in case of excessive pressure,suction, or vacuum, the enginebeing in motion and steam shutoff, the valve will lift, and steamor hot vapor and gases will enterand destroy compression and vac-uum, by way of the aperturesunder the valve leading to theexhaust, as well as by the open-ing directly into the steam pipe through the piston valve, therebygiving free openings from the steam pipe direct to the atmospherethrough the exhaust pipes. The valve casing is formed with steamports, and the valve is composed of two similar heads or pistons, each


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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910