. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . ssure was to read it from an indicating gage each time abrake application was made, noting also the time of each appli-cation. Thus, one observer obtained data for determining thenumber of brake applications in a given time, the pressure ofeach of such appKcations, and the time at which each recording gage was afterward connected to the ser\deereservoir, in which the pressure did not vary greatly. Thespeed of the car was obtained by means of a Boyer railwayspeed recorder which
. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . ssure was to read it from an indicating gage each time abrake application was made, noting also the time of each appli-cation. Thus, one observer obtained data for determining thenumber of brake applications in a given time, the pressure ofeach of such appKcations, and the time at which each recording gage was afterward connected to the ser\deereservoir, in which the pressure did not vary greatly. Thespeed of the car was obtained by means of a Boyer railwayspeed recorder which was checked by noting the time of pass-ing certain points in the route, and thus the distance traveled 302 ELECTRIC RAILWAY TEST COMMISSION in a given time was also determined directly. An observernoted the time of making each stop and its duration, thus giv-ing data permitting of a comparison of the number of stopsand the number of brake appHcations. WORKING UP THE RESULTS. The data were first arrangeci in tabular form after correctionof the instrument readings by calibration, and from these values. lb Brake. :To Tani^ Sase. -«^ ^ ^ to^ =Q f
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