. Railway track and track work . n this case teams wereused in addition to the machine. It is possible to put on enough men to laymore track by haml than by machine, but this is usually more rapidity of work is now rarely a first consideration. Holman System.—The tracklaying train. Fig. 203, has ordinary flat carsfitted on each side with tramways 20 ins. wide, having a series of iron tramways are 30 ft. long, and are carried by iron brackets set in the-stake pockets of the cars. The sections are flexibly connected between the^cars, and extend the full length of the
. Railway track and track work . n this case teams wereused in addition to the machine. It is possible to put on enough men to laymore track by haml than by machine, but this is usually more rapidity of work is now rarely a first consideration. Holman System.—The tracklaying train. Fig. 203, has ordinary flat carsfitted on each side with tramways 20 ins. wide, having a series of iron tramways are 30 ft. long, and are carried by iron brackets set in the-stake pockets of the cars. The sections are flexibly connected between the^cars, and extend the full length of the train, having a slight inclination towards:the front end. The ties and rails on the cars are thrown uj)on these tram— 316 TRACK WORK. ways and rolled down to the front, where men receive them and place themin position on the roadbed. The ties (moving endways) come down on oneside of the train, and the rails on the opposite side. The tie tramway endsin a chute, supported by a wire cable, which runs out 35 ft. in front of the. a g \% o 3 1 3 3 n = i - I! ^0 train, so that the tie gang is one rail length ahead of the rail gang. Tlie tiechute is adjustable laterally, so,that on curves the ties are always deliveredat the proper distance from the center line, while on bridges and trestles theycan be delivered near the center of the track. As each rail conies down the TRACK LAYING. 317 chute it is seized by the rail gang, placed upon the ties and pushed backagainst the previous rail, the expansion spacing being arranged by the jointgang. The rails are usually delivered on the left side, the left rail being theline rail, from which the position of the other is gaged. A recent modi-fication of the machine has a cantilever frame on which travel trolleys bywhich the rails are run out. The pioneer car at the head of the train is fitted with an elevated frame ortrestle, from which the chutes forming the end of the tramways are this frame rides a man who signals the enginem
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