. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . .120 x 30—450-R. P. M. of the driver If the speed of the driver is M. If the diam. of the driver is M. If the speed of the driver is M. To find the diam. of the driver? Using the pulley to divide by, or thequestion asked about the driver— x 30—8 inch. diam. of driver 450 If you have more than one set of pul-leys, figure out the first set; take the re-sults and figure out the next pulley, andso on until you arrive at the point de-sired. Mr. Blackburn gives the
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . .120 x 30—450-R. P. M. of the driver If the speed of the driver is M. If the diam. of the driver is M. If the speed of the driver is M. To find the diam. of the driver? Using the pulley to divide by, or thequestion asked about the driver— x 30—8 inch. diam. of driver 450 If you have more than one set of pul-leys, figure out the first set; take the re-sults and figure out the next pulley, andso on until you arrive at the point de-sired. Mr. Blackburn gives the above adviceparticularly to apprentices, but the in-formation given will profit every me-chanic no matter how long he has passedthe apprenticeship period. Every ambi-tious mechanic will find familiarity withknowledge helpful in raising him fromthe common workman condition. October, 1914. RAILWAY AND LOCOMOTIVE ENGINEERING. 381 Important Improvement in By-Pass and Drifting Valves An important addition to locomotiveappliances in regard to the perfecting ofby-pass valves and drifting valves has. FIG. 1. been jointly invented by Mr. H. C. Man-chester, Superintendent of Motor Powerand engineer of the Lackawanna, and S. Riegel, Mechanical Engineer of thesame road. As shown in the accompany-ing illustrations Fig. 1 is a vertical sec-tion through a locomotive engine cyl-inder and steam chest, Fig. 2 a centralsection of one of the improved valvemechanisms, and Fig. 3 a side elevationof the engine cylinder and valve mechan-ism, showing the pipe connections. Theinvention has for its principal object toprovide an improved valve mechanismfor automatically opening communicationthrough a by-pass valve between the op-posite ends of the engine cylinder whenthe locomotive is drifting, or runningwhen the throttle is closed, thereby per-mitting free passage of the contents ofthe cylinder from one end to the other,and maintaining the piston substantiallybalanced as to pressure upon its
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
