. Railway track and track work . ; then the mediumand then the high stand. Where two come in line, the medium is used forthe outer and the high stand for the inner switch. These stands have a whitedisk and red target, as shown in Fig. 69. On the high stand the disk is 17y2ins. diameter, of No. 16 A. W. G. steel; the red target is 30x12 ins., of No. 12;steel. The Norfolk & Western Ry. high stand is 7 ft. 5% ins. from the tieto the top of the rod, and has an oval white target %-in. thick (No. 10 iron)12x8^ ins., made in two pieces, flanged and riveted; the red target is 24xl2 ins., rectangular,
. Railway track and track work . ; then the mediumand then the high stand. Where two come in line, the medium is used forthe outer and the high stand for the inner switch. These stands have a whitedisk and red target, as shown in Fig. 69. On the high stand the disk is 17y2ins. diameter, of No. 16 A. W. G. steel; the red target is 30x12 ins., of No. 12;steel. The Norfolk & Western Ry. high stand is 7 ft. 5% ins. from the tieto the top of the rod, and has an oval white target %-in. thick (No. 10 iron)12x8^ ins., made in two pieces, flanged and riveted; the red target is 24xl2 ins., rectangular, with a 6-in. fishtail notch. The stand has switch rods1% ins. diameter, target rod %-in. square, and a throw of 3% ins., the dis-tance from center of shaft to center of pin being 2%-ins. The lamp has 5%.-in. lenses. The medium stand is 3 ft. 11%-ins. high to the top of the medium, low and pony (horizontal, Fig. 69) switchstands have whiteoval targets, 6 x 10 ins., and red targets, 6 x 12 ins. The Great Northern Half Thrown by WheelsTrai !ina throuah Switch. Half Thrown by 71.— Ramapo Automatic Switchstand uses a high stand 8 ft. 10 ins. high to the top of the lamp fork, with a whitetarget 12 ins. wide, on which is painted a 9-in. red disk. The target for theturnout may be shaped to indicate to which side the switch leads. Ondouble track the back of each target may be painted black. The switchstand is carried on one or two long ties, called the headblocks,so as to be kept immovably fixed in relation to the switch, but for highswitchstands the shaft carrying the lamp and target is frequently supportedby collar bearings on a vertical braced post or a set of three or four inclinedrods, the post or rods being fitted to a framed foundation independent ofthe headblock. In this way the lamp is relieved from some of the shock andjar incident to the operation of the switch. The switchstand should befirmly bolted to well tamped headblocks, and no lost motion sho
Size: 1944px × 1286px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
