Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . o have teams use the steel track rather than the paving, althoughthis advantage in maintenance is probably more than counterbalancedby the delay of cars through the regular wse of the track by teams. Trilby or Grooved Rail. A modi-fication of the girder rail, known as theTrilby, and somet
Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . o have teams use the steel track rather than the paving, althoughthis advantage in maintenance is probably more than counterbalancedby the delay of cars through the regular wse of the track by teams. Trilby or Grooved Rail. A modi-fication of the girder rail, known as theTrilby, and sometimes as the groovedgirder, is shown in Fig. 225. It has agroove of such a shape that the flangesof the car wheels will force snow anddirt out of it instead of packing it intothe bottom of the groove, as in the caseof the regular European narrow-groovedrail. A narrow-grooved rail in whichthe grooves correspond closely to theshape of the car-wheel flanges is sureto make trouble in localities where thereis snow and ice, as the grooves becomepacked and derail the cars. A numberof varieties of this type of rail are inuse. They difier principally in theheight of the lip shown at the right in the figure. This may behigher than the head or lower, or it may be, as in the section shown,nearly on the same Fig, 225. Trilby or Grooved Rai 333 236 ELECTRIC RAILWAYS Guard Rail. On T-rail curves it is customary to use a guardrail which bears against the inside of the wheel flange and assistsin holding the wheel to the rail. The guard rail is of a special formas shown in the mate in Fig. 236, p. 246. It is bolted to theinside of the rail web. Guard rails may be improvised out of oldstandard rails bolted to the main rail with spacing blocks between,but the regular sections are to be preferred. Composition of Rails. As the qualities of steel are very greatlyaffected by the chemical composition, specifications drawn by rail-way companies are very rigid in this matter. For rails of averageh
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Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910
