. Operation of trains and station work and telegraphy . FIG. 74. SIDE VIEW OF BUCKER SHOWING COUPLER HEAD. The required counter voltages are generated automati-cally in these two windings, one providing the necessaryregulation for the generator field as the speed increases,and the other increasing as the charging voltage of thebattery increases, thus keeping the lamp voltage constant. HEATING AND LIGHTING CARS 169 Automatic Switch.—The connection between thegenerator and the rest of the system is controlled bymeans of an automatic device called the generatorswitch/ It is simply a solenoid comp
. Operation of trains and station work and telegraphy . FIG. 74. SIDE VIEW OF BUCKER SHOWING COUPLER HEAD. The required counter voltages are generated automati-cally in these two windings, one providing the necessaryregulation for the generator field as the speed increases,and the other increasing as the charging voltage of thebattery increases, thus keeping the lamp voltage constant. HEATING AND LIGHTING CARS 169 Automatic Switch.—The connection between thegenerator and the rest of the system is controlled bymeans of an automatic device called the generatorswitch/ It is simply a solenoid composed of two coils,one the lifting or closing coil, the other the releasing oropening coil. These coils act upon a plunger, which isdrawn up by the lifting coil. When so drawn up, ametal brush attached to the plunger connects two termi-. » PIG. 75. BUCKER WITH LOWER FRAME REMOVED SHOWINGARMATURE IN LOWER FRAME. nals thus connecting the generator to the battery. Thesolenoid switch closes the connection between the mainwires when the generator has attained an operating speedand opens automatically when the generator drops belowthe operating speed. Storage Battery.—In general, two groupings ofstorage battery have been standardized for railroad work, 170 RULES FOR MOVEMENT OF TRAINS i. e., 16 cells with operating voltage of 30 to 32, and 32cells with operating voltage of 60 to 64. Where onlysingle car lighting is considered, it is probable that neithersystem presents any marked advantage over the other,and decision has been based on individual operating con-ditions. The 16-cell equipment reduces the number of connec-tions in the battery, and also tends to reduce the costof inspection and maintenance, on account of the smallernumber of battery units. The 32-cell system, on thecontrary, entails more apparent complication
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadtrains, booky
