International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 530
ectly upon the switch rails. The throw of the switch is from 4^ to 5 inches. The railbraces / are usually of forged steel, though some are stillmade of cast iron. 1687. Safety Switches. —When a train passes fromthe main track to the side track, it necessarily passesthe points of the switch first.… … 1118 TRACK WORK. William Lorenz, chief engineer of the Philadelphia andReading Railroad, has the credit of designing a self-actingswitch, which is provided with a powerful spring that holdsthe switch points firmly against the stock rail, thus keepingthe main track constantly unbroken. With the…
Railroad engineering
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