. American engineer and railroad journal . d by the pressure of the rings against he walls of the valve chamber. To demonstrate that the contact of the rings with the bush-ing is absolutely controlled, a set of valves were applied toan engine on the Pennsylvania Division of the New York Cen-tral & Hudson River Railroad under Mr. E. A. Walton, divisionsuperintendent of motive power, on July 1, 1905. The bridgesin the steam ports were removed. After a years service, with he valves passing over the ports without bridges, there wasno sign of a blow and no perceptible wear of either the valve lushi
. American engineer and railroad journal . d by the pressure of the rings against he walls of the valve chamber. To demonstrate that the contact of the rings with the bush-ing is absolutely controlled, a set of valves were applied toan engine on the Pennsylvania Division of the New York Cen-tral & Hudson River Railroad under Mr. E. A. Walton, divisionsuperintendent of motive power, on July 1, 1905. The bridgesin the steam ports were removed. After a years service, with he valves passing over the ports without bridges, there wasno sign of a blow and no perceptible wear of either the valve lushings or rings. The committee on piston valves in their report to the MasterMechanics Association in 1904 cited a number of careful testswhich were made by the Norfolk & Western Railway and theLake Shore & Michigan Southern Railway to determine theamount of leakage of valves. The best piston valve showed aleakage of lbs. per hour and the best slide valve a leak-age of 348 lbs. per hour. The worst case of leakage of piston.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
