. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . NO. 2.—AN VIKW OF THE HOCKING VALLEY)AIR-BRAKE INSTRUCTION CAR. (84) A. B. L., Lexington, Ky., asks:Why dont they put a collar on thelower end of the piston rod of the airpump, thus giving a broader shoulderor bearing surface for the piston head?The bearing is so narrow that when thehead works loose on the rod, the pound-ing of the head against the narrow Dcoembcr, RAILWAY AND LOCOMOTIVE ENGINEERING 555 shoulder will wear a big liulc in thehead and let the rod slip through.
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . NO. 2.—AN VIKW OF THE HOCKING VALLEY)AIR-BRAKE INSTRUCTION CAR. (84) A. B. L., Lexington, Ky., asks:Why dont they put a collar on thelower end of the piston rod of the airpump, thus giving a broader shoulderor bearing surface for the piston head?The bearing is so narrow that when thehead works loose on the rod, the pound-ing of the head against the narrow Dcoembcr, RAILWAY AND LOCOMOTIVE ENGINEERING 555 shoulder will wear a big liulc in thehead and let the rod slip through. A.—The trouble is not in the narrowshoulder, which is wide enough if lostmotion is Ucpt out. but is due to the as in the other A.—As a general rulethe longer the blow at the angle fittingthe longer the train, providing the blowsin both cases sound about alike; but ifone discharge is rather weaker than the. tut a larger thread on it? It would bestronger then, and would not break aseasy as it docs now. There are a lotof engines that break the nut off therod right where the thread stops. A.—If the nut is screwed up lightly and se-curely locked so there is absolutely nolost motion between the nut and thepiston, the piston rod will be found tobe large and strong enough. The usualcause of the breakage of the rod at thepoint described is the screwing up of thenut with a chisel when the piston is inthe cylinder. This damage is frequentlydone in the round house by the run-ning repair man, who resorts to a ham-mer and chisel after finding the wholepiston turns when a wrench is used onthe nut. R. M. Buffalo, X. 3.—INTKRIOR VIEW OK THK HOCKING ^HV CAR. LOOKING DOWN THE AISLE THE COMPRESSOR. nuts not being screwed up tightly andsecurely, and the head is not held tight-ly against the shoulder. A little lostmotion will be left which grows and in-creases unt
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
