. The street railway review . andlead, having melting points of 140°, 240°, 440° and 610°, all Fahren-heit, respectively. When beeswax melted in a hole 2 in. fromthe circumference it w^s assumed that the plate of the wheelat that point had reached a temperature of 140° F. .\ soft cast iron brake shoe. M. C. B. standard, was applied witha pressure of lb. and the wheel driven continuously at therate of 30 miles per hour for .joj^ minutes. After six minutesrunning the brake shoe was heated to a cherry red and continuedso to the end of the test, throwing off scintilating sparks. Atthe end of
. The street railway review . andlead, having melting points of 140°, 240°, 440° and 610°, all Fahren-heit, respectively. When beeswax melted in a hole 2 in. fromthe circumference it w^s assumed that the plate of the wheelat that point had reached a temperature of 140° F. .\ soft cast iron brake shoe. M. C. B. standard, was applied witha pressure of lb. and the wheel driven continuously at therate of 30 miles per hour for .joj^ minutes. After six minutesrunning the brake shoe was heated to a cherry red and continuedso to the end of the test, throwing off scintilating sparks. Atthe end of the test, an examination of the wheel showed thatsulphur (204°) was melted in hole No. 2, 3 in. from the tread,and wax (140°) was melted in hole No. 5, 8 in. from the tread of the wheel was blue and in spots small cracks werevisible where the chilled iron had disintegrated. The body of thewheel showed no cracks. After 29 minutes the heat had workedinto the wheel so that wax melted on the hub. No part of the. WHEEL STOK.\GE TRACKS, CEXTK.\L bHulS. J.\CK FOR TURNIXC. MOUNTED CAK WHEELS. consists of two parts, the lower portion fitting into the hole in thebase plate and the upper one turning about a horizontal in use the jack is inclined as shown dotted in the linedrawing, being .supported by a swinging link. The momentum ofthe moving w-heels carries the jack to a vertical position andlifts the flanges clear of the rails so that they can be swungaround and pushed off onto the spur track. When not in usethe jack may be turned over flat on the ground as shown at theright of the half tone. A Northern Pacific passenger train ran into a Grant Street elec-tric car in Seattle, June 3d. killing i passenger and severelyinjuring 18 others. The accident occurred near the WashingtonIron Works. In the scramble to get out of the car the peoplejumped into the bay and had a narrow escape from drowning. Thewater is 15 ft. deep. wheel more than 2 in. fro
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
