Identifier: streetrailwayrev09amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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head traveler system enablesthe armatures to be run from the shop directly to the motor inwhich it is tested. NEW YORK BRAKE TESTS. In the Review for May, page 336, was published the announce-ment of the Railroad Commissioners of New York inviting themakers of brakes for street cars to submit them for an ofKcial test.In response to this invitation, 21 diflFerent systems of brakes weresubmitted for tests, and six of these were to be tested on August29th and 30th. The tests were made on the Lenox Ave. line of the MetropolitanStreet Ry., between 146th St. and 135th St., in New York City, thisportion being appro.\imately level. Fourteen speed and distancecurves were taken for each brake, three each at initial speeds of 8,\^, 15 and 16 miles per hour and two at 16 miles per hour usingsand. The brakes were all fitted to long cars mounted on Brillmaximum traction trucks. The apparatus for registering the speed, distance and time wasdesigned by Mr. C. R. Barnes, the comissioners engineer. For
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.\RMATURE TESTING ROOM-CHICAGO CITY RAILWAY. 620 STREET RAILWAY REVIEW. (Vol. IX, No. 9. recording the speed there are two wooden wheels mounted on an.i.xle and held against the rails for springs; the axle is geared to ashaft which in turn is connected to a screw by friction gearing. Onthe screw is a carriage with the recording pencil. The pencil hasa weight attached to it and is carried downward at a rate determinedby a clock mounted on the carriage. A Boyer speed recorder ismounted in the usual manner and an adjustable stop placed so that01 reaching a given speed the dial pointer makes contact with it.This contact closes an electric circuit and the action of the currentsimultaneously throws into gear the friction clutch driving thecarriage, releases the escapement controlling the vertical motion ofthe pencil and rings a bell, which is the signal for the motorman toslop. The first test, .August J9th, wms that of the electric brake of theGeneral Electric Co., and this was followed by

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