International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 533
ave a total lateral movement atthe head chairs of from 10 to 12 inches, depending upon thednnensions of the rails. Their lateral movement is fixed bythe lugs/, k on the head chairs. The switch stand is shown in elevation at C, and in planat D. The three positions of the switch are fixed by theslots… … FiG. 5:«. duced scale the switch and both turnout curves with mainrail frogs/ and v, and the crotch frog ;-, by means of which TRACK WORK. 1121 the outer rails of the turnout curves cross each other. Theturnout curves of a double-throw switch are usually of thesame degree, which brings the crotch…
Railroad engineering
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