. The Street railway journal . pur-pose. (2) The tension of the trolley wire at a temperature of 0 (32 degs. Fahr.) ought to be between 450 and 500 kg (990 to1100 lbs.) for wires square millimeter in cross section ( B. & S,) (3) The ears should be long and pliable and at least 380 mm(15 ins.) in length. (4) The overhead frogs and switches should have long andpliable arms, which should be provided with guard shields .so thatthe trolley pole will not tear down the overhead structure if itleaves the wire. (5) Ordinary hangers should be provided with similar guardswhere the span i
. The Street railway journal . pur-pose. (2) The tension of the trolley wire at a temperature of 0 (32 degs. Fahr.) ought to be between 450 and 500 kg (990 to1100 lbs.) for wires square millimeter in cross section ( B. & S,) (3) The ears should be long and pliable and at least 380 mm(15 ins.) in length. (4) The overhead frogs and switches should have long andpliable arms, which should be provided with guard shields .so thatthe trolley pole will not tear down the overhead structure if itleaves the wire. (5) Ordinary hangers should be provided with similar guardswhere the span is more than 45 meters (137 ft.). (6) Where soldered ears are used, comparatively soft soldershould be employed, and the trolley wire should not be allowedto get to too high a temperature. The convention then adjourned. COAL CAR AT HUDDERSFIELD A coal car of somewhat novel design has recently been putin operation on the Huddersfield Tramway, and is said to be thefirst electric car of this kind in use in England. The car is. tons, and its load is discharged from side doors, as shown inthe engravings. The trolley pole is supported from one of thesides of the car. The car is mounted on a Brush radial truckand is equipped with two 45-hp Westinghouse motors, also theWestinghouse Newell magnetic brake. The truck and car bodywere supplied by Milnes, Voss & Company. RECENT ELECTRIC ROAD IN DERBY, ENGLAND A good example of present city railway construction in GreatBritain is shown by the recent installation in the city of Derby,which has a population of 125,000. The road has a length,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
