. Locomotive engineering : a practical journal of railway motive power and rolling stock . packings andthe air was escaping around one of thecylinder packing leathers. Now, it looks plain enough that air wasescaping from under the face of the slidevalve and was going to the brake cylin-ders, which induced a current and causeda suction through the exhaust port, but itdoes not look quite clear to me why theair should go through the pipes instead of April, 1900. slide valve from its seat, but was removedas soon as the slide valve moved. Theron H. Williams,Air Brake Inspector, C, M. & St. P. Ry. C


. Locomotive engineering : a practical journal of railway motive power and rolling stock . packings andthe air was escaping around one of thecylinder packing leathers. Now, it looks plain enough that air wasescaping from under the face of the slidevalve and was going to the brake cylin-ders, which induced a current and causeda suction through the exhaust port, but itdoes not look quite clear to me why theair should go through the pipes instead of April, 1900. slide valve from its seat, but was removedas soon as the slide valve moved. Theron H. Williams,Air Brake Inspector, C, M. & St. P. Ry. Chicago, III. [Your trouble with the driver braketriple valve would seem to be possible asyou describe it. Perhaps the slide valvewas not in full release position and dirtwas so located between the face of theslide valve and seat that there was apassage of air rushing in the direction ofthe cylinder port, which produced thesame action that the injector does whenforcing water to the boiler. In the in-jector, so long as the boiler check valve isopen, the water goes direct through the. EXTERIOR VIEW OF PITTSBURGH & WESTERN INSTRUCTION CAR. What will cause a plain triple valve todraw air in through the exhaust port ? I cleaned and oiled a driver brake triplevalve a few days ago, and after I put thevalve together and started the pump airstarted to flow in through the exhaustport of the triple valve, enough to take inmost all of the blaze of a torch. I watched it until the maximum pres-sure was pumped up. For experiment, Idisconnected the pipe leading to the brakecylinders at the first union joint from thetriple valve, and found air was going to blowing out the exhaust, the defectivepacking being on the opposite side of theengine, and the pipes leading to it arequite long and crooked. I applied the brakes and they set allright, and the packing was perfectly tightas soon as air entered the cylinder withforce enough to expand the packing to thesides of the cylinder. When I released the


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892