. Railway mechanical engineer . March, 1920 RAILWAY MECHANICAL ENGINEER 1S3 TEST RACK FOR INSTRUCTING AIRBRAKE REPAIRMEN BY N. J. CLINEAir Brake Foreman, Pittsburgh & Lake Erie A novel and ingenious test rack installed in the air-brakeinstruction car of the Pittsburgh & Lake Erie is shown inthe illustrations. This test rack is used for instructing airbrake repairmen in the method of testing a car on the repairtrack for defects in the air brake equipment. .\ 10-in. freight brake equipment stands vertically againstthe wall, with suitable pipe connections and gages to indi-cate resulting pressure
. Railway mechanical engineer . March, 1920 RAILWAY MECHANICAL ENGINEER 1S3 TEST RACK FOR INSTRUCTING AIRBRAKE REPAIRMEN BY N. J. CLINEAir Brake Foreman, Pittsburgh & Lake Erie A novel and ingenious test rack installed in the air-brakeinstruction car of the Pittsburgh & Lake Erie is shown inthe illustrations. This test rack is used for instructing airbrake repairmen in the method of testing a car on the repairtrack for defects in the air brake equipment. .\ 10-in. freight brake equipment stands vertically againstthe wall, with suitable pipe connections and gages to indi-cate resulting pressures and their changes. Two triple valves,one known to be in good condition and the other known tobe in bad condition, or at least a condition that should re-ceive attention, are also connected. The same is true of thepressure retaining valves installed on the top of the air cylin-der, one of them being known as a good valve and the otheras one needing attention. To the left of the brake apparatus is a device for testing. The Air Brake Testing Device Installed in the Instruction Car brakes on single cars, which is permanently installed as apart of this rack, but is, in detail, exactly like that used bythe repairmen on the repair track. The repairmen are Ijrought into the car in classes, andeach man is asked to test out this car equipment, locate anydefects, if they , and indicate what should be done toovercome them. Brake cylinder leakage can be varied, andeither the good or bad triple valve or pressure retaining valvecan be cut into the equipment. The code of tests used wMth this rack is that for freightbrake triple valves, which is as follows: The tests are to be made with 80 to 90 lb. pressure in thesupply line and with the single-car test apparatus. Test for Testing. Device.—Before coupling the testing de-vice to the brake pipe hose, close cocks i and 2 and open the cock in the supply pipe. There should be no escap • of airfrom the coupling at the end of the test dev
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
