. The street railway review . it was fiveor six years ago and the wearing qualities have been greatly im-proved. Steel wheels a few years ago cost from £20 to £22 perset, whereas they can now be purchased at from £14 o £16 perset, and while at the same time the price of the cast iron wheel hasbeen reduced it is not to a proportionate extent. The latter can nowbe bought at 28s. The chipping of flanges seems to be the mostfrequent cause of trouble with the cast iron wheel, due to the narrowgroove rail required by the Board of Trade, the flange of the wheelbeing of necessity so thin that the meta
. The street railway review . it was fiveor six years ago and the wearing qualities have been greatly im-proved. Steel wheels a few years ago cost from £20 to £22 perset, whereas they can now be purchased at from £14 o £16 perset, and while at the same time the price of the cast iron wheel hasbeen reduced it is not to a proportionate extent. The latter can nowbe bought at 28s. The chipping of flanges seems to be the mostfrequent cause of trouble with the cast iron wheel, due to the narrowgroove rail required by the Board of Trade, the flange of the wheelbeing of necessity so thin that the metal is chilled completely throughin casting and consequently becoming too brittle to long withstandthe continued shocks received in passing over points and of wheels is another trouble which is frequently experi-enced with cast wheels; however, this can be practically eliminatedby the careful training and discipline of the motormen. Flangesdo not chip, flats are almost unknown and cars run smoother and. CRANE CAR, INDIANAPOLIS TRACTION & TERMINAL CO. wliich has twelve 6-in. wheels spaced at equal intervals apartaround the circumference of a circle 7 ft. 6 in. in diameter, thecrane frame being secured to the car proper by a king bolt. Thehorizontal side members of the frame are 8-in. I-beams 16 ft. long,spaced 8 ft. apart. The posts are 6-in. I-beams 7 ft. high; thebraces of the frame are 6-in. I-beams. The boom is made of two6-in. beams braced with diagonal stiffeners and is 18 ft. long. Atthe rear of the crane frame is mounted an electric hoist driven bya 6-h. p. motor. The capacity of the crane is a load of 2 tonssupported at a distance of 18 ft. from the pivot. This crane car has been found especially convenient in recon-structing old track and in building new work, as a switch or cross-ing or other piece of special work can be lifted bodily and de-posited in place in the track, thus onahling special work to be laidat the .same time as the track rails
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
