. Railway mechanical engineer . o assume that theefficiency of the valveis increased abovewhat it would be if itwere cleaned fourtimes during the yearor every three control valves thatwere subjected to thistest were lubricated asfollows: The slidevalves, piston bushingsand packing rings werelubricated, sparingly,with dynamo and oil, triplevalve oil and a lightgenerator oil. The cost of removing, cleaning, testing and replacing acontrol valve is, together with the dust collector and strainer,about $ All valvular mechanism that fails to pass theyard test should be re
. Railway mechanical engineer . o assume that theefficiency of the valveis increased abovewhat it would be if itwere cleaned fourtimes during the yearor every three control valves thatwere subjected to thistest were lubricated asfollows: The slidevalves, piston bushingsand packing rings werelubricated, sparingly,with dynamo and oil, triplevalve oil and a lightgenerator oil. The cost of removing, cleaning, testing and replacing acontrol valve is, together with the dust collector and strainer,about $ All valvular mechanism that fails to pass theyard test should be removed and shopped for repairs. All piping should be thoroughly inspected and have determined that if brake cylinders are properlycleaned and lubricated, particularly if they are equippedwith the J. M. expander ring, they will remain in servicewith a minimum leakage for 18 months. The cost of clean-ing and lubricating the brake cylinders and slack adjustersis about $, which, added to $ for the control Otto Best. Brake Association JUNE, 1916. RAILWAY MECHANICAL ENGINEER J(U gives a total cost lor cleaning the entire equipment of $,the average price of labor being cents per hour. Ex-tending the time of cleaning of the control valve to sixmonths and the brake cylinder and slack adjuster to 12months would mean a saving of 50 per cent of the presentcost of this work, and experience will probably demonstratethat a further saving may advantageously be made akmgthese lines. Levers and roil- should be carefully inspected. The con-struction of the foundation brake gear should be such as tomaintain the position of the brake shoe in relation to thewheel at the same point practically all the time, giving uni-form braking and an even wear of the shoes. With the heavy passenger equipment now in use a prop-erly designed clasp brake is of the utmost importance for ef-ficient and satisfactory braking. The advantage derived byusing the clasp brake is
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
