. The street railway review . car-bodies upto a weight of 40,000 lb. at a speed of 60 miles an hour, with perfectsafety. A test of one side frame of the No. 35 truck showed a de-flection of Yz in. with a permanent set of 5-16 in. under a pressure furnishes a supply of about 600 litres per second, h dam is builtacross the river and canal of 740 meters in length opened to thepower house. The latter contains a turbine of 180 h. p. making500 r. p. m. which is directly coupled to a three-phase generator of138 kw. capacity, at 3,600 volts and of a frequency of 50 p. p. s. Thefields are excited by. a
. The street railway review . car-bodies upto a weight of 40,000 lb. at a speed of 60 miles an hour, with perfectsafety. A test of one side frame of the No. 35 truck showed a de-flection of Yz in. with a permanent set of 5-16 in. under a pressure furnishes a supply of about 600 litres per second, h dam is builtacross the river and canal of 740 meters in length opened to thepower house. The latter contains a turbine of 180 h. p. making500 r. p. m. which is directly coupled to a three-phase generator of138 kw. capacity, at 3,600 volts and of a frequency of 50 p. p. s. Thefields are excited by. a small dynamo of 600 watts at 50 volts,mounted upon the shaft of the alternator. The transmission lineis composed of three bare silicon-bronze wires of 4 mm. diameter,carried on double petticoat porcelain insulators. The electricalenergy is transmitted to the summit of the mountain, up which theread runs, where there is a sub-station, in which is located an elec-tric motor which operates the cable drums. This is a three-phase. McGUIRE NO. 39 TRUCK. of 55 tons, without sign of fracture, and the cast steel bolster undera pressure of 140,000 lb. showed a deflection of yA in. and a per-manent set of 3 in. without sign of fracture, and it tooka pressure of 160,000 lb. to break the bolster. All thebolsters used, are tested up to 70,000 lb. and all side framesare tested up to 40,000 lb., and in a test of 700 bolsters and 1,400 sideframes, not a single frame or bolster had to be rejected. The Mc-Guire company claims that there is no other form of constructionwhere so large a factor of safety is obtainable. ♦ » » The Union Traction Co., of Anderson, Ind., has let contractsamounting to $50,000 for the construction of four bridges. synchronous motor with a revolving field of I2 poles, making 490r. p. m. The motion is transmitted to the drum by means of twoshafts and the necessary gears and pinions. The direction of rota-tion of the drum is changed by changing the direction of two ofth
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