. The street railway review . Manufacturing Bridgeport, grinders are each provided with a set of inclined guides upwhich the axle and its pair of wheels are run to he placed betweenthe The grinder wheels are of corundum, outside diameter16?^ in.; face, 6 in.; thickness, 2 in. The corundum wheels lastfrom two to three months. The grinders are driven by belting from each side. About i4 hours arc required fcir luniing unless thewheels have already been ground, when the flanges are turned inabout 45 minutes. If the wheel circumferences differ by A measured upon bein
. The street railway review . Manufacturing Bridgeport, grinders are each provided with a set of inclined guides upwhich the axle and its pair of wheels are run to he placed betweenthe The grinder wheels are of corundum, outside diameter16?^ in.; face, 6 in.; thickness, 2 in. The corundum wheels lastfrom two to three months. The grinders are driven by belting from each side. About i4 hours arc required fcir luniing unless thewheels have already been ground, when the flanges are turned inabout 45 minutes. If the wheel circumferences differ by A measured upon being taken from a car, they are turned in thislathe to the same size. The maximum difference in circumferencepermitted for wheels on the same axle is % in., but wheels on twodifferent axles may be K ■ difference in circumference. The Pondlathe is driven by a is-h. p. Westinghouse motor at 550 volts directcurrent, and the speed range is from 675 to y25 r. p. m. The powerconsumption of the lathe is kw. b. per pair of FK,. 4. WHEEL GRINDING M.\CHINE. a countershaft run by a 40-h. p. motor. About 1-16 in. of circum-ference is taken off in each grinding, the operation taking from 15minutes to half an hour. The flat spots are first taken out, and whenthese arc removed—determined by the appearance of the tire—afinishing touch is put on by running the grinder along the tread of The dust ground from the wheels in the tire grinding process isdrawn into a 12-in. by 8-in. duct set in the floor at the bottomof the grinders. Thence it is drawn out of the building by a 36-infan driven by a 3-h. p. motor. Two men are required to oversee thegrinding, look after the belts, etc. Form 934 10(X)-12-04 Diameter of Centre Material Cast Iron Wheel Fitted by Pressed on by Wlicet No. 479 Made by A B C Purchased Put in Service Tons Pressure Diam. Material Made by Purchased Pul in ^erviee Fiited by Axle No. 237 Tire No. 30 Put In RemoTcd No. Days TireLoss Car No. Date Measureme
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
