. The Street railway journal . transoms are madeof 10-in. channels, 30 lbs. per foot, connected to the truckframe by ^-in. steel gusset plates, securely riveted andbolted as shown. The bolsters are open-hearth steel plates8 ins. wide by 3 in. thick, placed flatwise and fastened to-gether, as shown in the section. The steel has a tensile in two cables bent out in each direction so as to reduce thedanger of breaking. As shown in the cross section thehanger is also made with a toothed slot, where it is boltedonto the truck frame, so that its height can be adjustedwithout difficulty. MOTOR-CAR TRA
. The Street railway journal . transoms are madeof 10-in. channels, 30 lbs. per foot, connected to the truckframe by ^-in. steel gusset plates, securely riveted andbolted as shown. The bolsters are open-hearth steel plates8 ins. wide by 3 in. thick, placed flatwise and fastened to-gether, as shown in the section. The steel has a tensile in two cables bent out in each direction so as to reduce thedanger of breaking. As shown in the cross section thehanger is also made with a toothed slot, where it is boltedonto the truck frame, so that its height can be adjustedwithout difficulty. MOTOR-CAR TRAILER TRUCKS The motor-car trailer trucks have been remodeled fromthe former trucks used in steam operation, although a fewnew trucks were purchased from the Baldwin LocomotiveWorks. They have a 5-ft. wheel base, instead of one of 6ft., as with the motor trucks. The truck frame is made of 3-in. x i{-in. wrought-ironbars, with reinforced corners. The bolster is made ofthree pieces of white oak 9 ins. deep, and two 7A-in. x ^ .—~~ Street Railway Journal MOTOR TRUCK, GENERAL ASSEMBLY strength of 60,000 lbs. per square inch and an elongationof 22 per cent in 8 ins. The spring-plank is made ofan 8-in. channel, lbs. per foot, with an oak plankfitted to the channel. The pedestals for the journal boxesare of cast steel, and the equalizer bars are of steel 1 in. x6 ins. in section. The journal boxes are of malleable journal brasses used are of phosphor bronze lined withbabbitt. The phosphor bronze employed follows the Man-hattan composition, viz.: 77 per cent copper, 8 per centtin and 15 per cent lead. The babbitt is made up of cent tin, per cent copper, 16 per cent antimony,and per cent lead. The third-rail shoes are of cast-iron, and are somewhatlighter in weight than those ordinarily there is not much possibility for variety in pat-tern in the way of third-rail shoes, one or two points inconnection with this part of the equip
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
