. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . position 159 Quick-action valve venting 160 Quick-action valve closed 162 Westinghouse train air-signal system 165 Essentials of air-signal system 165 Reducing valve 167 Signal valve 167 Brief instructions for use and care of air-brake equipment 168 CONTENTSAIR BRAKES AS APPLIED TO ELECTRIC CARS PAQB General survey of systems developed 171 Hand brakes 171 Early forms of air brake 172 Characteristics of modern systems 172 Details of SME brake equipment 174 Fea
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . position 159 Quick-action valve venting 160 Quick-action valve closed 162 Westinghouse train air-signal system 165 Essentials of air-signal system 165 Reducing valve 167 Signal valve 167 Brief instructions for use and care of air-brake equipment 168 CONTENTSAIR BRAKES AS APPLIED TO ELECTRIC CARS PAQB General survey of systems developed 171 Hand brakes 171 Early forms of air brake 172 Characteristics of modern systems 172 Details of SME brake equipment 174 Features of SME system 174 Principal working parts 174 Equipment of non-motor trailers 176 Proper and improper manipulation 178 Type D-EG motor-driven air compressor 181 Ty])e J electric compressor governor 185 Tj-pe AI-18 brake valve . 189 Duplex air gage 190 Type D emergency valve 190 Brake cylinder 191 Conductors valve 191 Charging 193 Service application 193 Holding brakes appHed 194 Releasing 196 Emergency application 196 Axle-driven compressor equipment 197 Storage air-brake equipment 197 Train air signal 199 Stopping a car 199. AIR BRAKES PART I INTRODUCTION Braking an Outgrowth of Speed. The development of the manyaccessory appliances with which the rolling stock of our railways isfitted has been the subject of a great deal of study and the many appliances which have received careful and systematicstudy, the braking apparatus is one of the most important. The time when the question of braking first received attentiondates back farther than the time when highways became sufficientlywell made and well maintained to permit of vehicles being drawn ata moderate rate of speed. When wheeled vehicles, drawn at speedsof ten or fifteen miles per hour, first made their appearance, it wasfound necessary to provide means by which they could be easily andquickly stopped in case of emergency. The first carts and wagons,built for agricultural purposes, were of such constr
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