. Railway mechanical engineer . when lifting an engine; inno position will it be concentrated on one section. AUTOMATIC DRIFTING VALVE An automatic drifting valve for use on superheater locomo-tives is shown herewith. It is known as Woods vacuumbreaker and its operation is controlled by the pressure in thelive steam passage of the valve chamber. The device has four pipe connections: Pipe A leads to the livesteam passage of one of the valve chambers or to one of the steampipes; pipe B to the turret, or other source of constant boilerpressure, and the two pipes C to the live steam passages of th
. Railway mechanical engineer . when lifting an engine; inno position will it be concentrated on one section. AUTOMATIC DRIFTING VALVE An automatic drifting valve for use on superheater locomo-tives is shown herewith. It is known as Woods vacuumbreaker and its operation is controlled by the pressure in thelive steam passage of the valve chamber. The device has four pipe connections: Pipe A leads to the livesteam passage of one of the valve chambers or to one of the steampipes; pipe B to the turret, or other source of constant boilerpressure, and the two pipes C to the live steam passages of thevalve chambers. When the throttle is open the plug piston intlie large chamber at the end of the valve body is subjected tothe pressure in the valve chamber. The resulting movement ofthe piston to the left closes communication between the constantsteam supply at connection B and the passages leading to thevalve chambers. On the release of pressure at A due to theclosing of the throttle the spring forces the piston back to the. Drifting Valve for Superheat ri:.4lit, opening the communication between connection B and pas-sages C and admitting a limited supply of steam to the valvechambers, which provides a medium for carrying and distributingthe lubricant over the valve chamber and cylinder walls. .\ patent has been applied for on this device and it is manu-factured by the Xathan Manufacturing Company, New York. Ithas been subjected to service trials and its performance is under-stood to have been highlj- satisfactory. It may be located at anyconvenient point on the locomotive, preferably near one of thecvlinders. RAILWAY ACF. , MICCIIANICAL EDITION 373 CONTINUOUS MOTION HAMMER BOLTHEADING MACHINE More than half of all sfiiiarc. hcxaiicm and toe lu-afl holts arctlie product of the haiiuner tyi)c of holt heading machine. Inthe operation of the usual design of these machines the output,hoth in quantity and uniformity, is dependent entirely upon thephysical ability of the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
