. The Street railway journal . rimental equipment of con-siderable importance. The apparatus is, for the most part, de-voted to railroad testing in some of its numerous branches. Oneof the larger pieces of apparatus is the Master Car Buildersbrake shoe testing machine, shown in Fig. 1. This machine wasbuilt in 1893 at Wilmerding. Pa., for the M. C. B. Association, tive coefficients of friction of different shoes under different speedsand pressures of application. Another unique piece of apparatus is the air brake testing rack,also belonging to the Master Car Builders Association. Thisrack, sho
. The Street railway journal . rimental equipment of con-siderable importance. The apparatus is, for the most part, de-voted to railroad testing in some of its numerous branches. Oneof the larger pieces of apparatus is the Master Car Buildersbrake shoe testing machine, shown in Fig. 1. This machine wasbuilt in 1893 at Wilmerding. Pa., for the M. C. B. Association, tive coefficients of friction of different shoes under different speedsand pressures of application. Another unique piece of apparatus is the air brake testing rack,also belonging to the Master Car Builders Association. Thisrack, shown in Figs. 2 and 4, was until recently located atAltoona, Pa., and is the one upon which the notable tests con-ducted by the M. C. B. Association were made. This rack hasbeen deposited at Purdue, and future shop tests of air brakes willbe made at that institution. The rack consists of a completeequipment for a fifty-car train. The triples, reservoirs and cylin-ders are in duplicate. Referring to Fig. 4, the hose pipe shown in. BRAKE SHOE DEPARTMENT MR1 BRAKEDEPARTMENT and has recently been deposited at Purdue, where the future workon brake shoe testing will be done. Several notable series oftests have already been carried out on the machine by committeesof the M. C. B. Association, the results of which tests have beenpublished in its proceedings. The machine consists in its ele-ments of a standard car wheel mounted on a shaft to which iskeyed a large fly wheel, designed so as to possess at any speed akinetic energy of one-eighth of a loaded 60,000-lb. freight car. Theshoe to be tested is applied to the car wheel by means of a series
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
