. Electric railway journal . on the tramwayrail and makes the negative connection. This collectorconsists of a skate hinged at the rear end of the vehicleand arranged so that it may be raised and lowered. Itpermits a deviation of 5 ft. from the center line of thetrack. The cars, of which two have been ordered for Brad-ford and four for Leeds, resemble a motor Bradford cars are entered from a rear platform andhave a motorman and a conductor, but the Leeds cars areentered from the front platform and only a motormanis required. The bodies of both types of cars have crossseats upholste
. Electric railway journal . on the tramwayrail and makes the negative connection. This collectorconsists of a skate hinged at the rear end of the vehicleand arranged so that it may be raised and lowered. Itpermits a deviation of 5 ft. from the center line of thetrack. The cars, of which two have been ordered for Brad-ford and four for Leeds, resemble a motor Bradford cars are entered from a rear platform andhave a motorman and a conductor, but the Leeds cars areentered from the front platform and only a motormanis required. The bodies of both types of cars have crossseats upholstered in rattan and they have a total seating-capacity for 28 passengers. The wheels are of the artillervtype, with solid rubber tires. Single tires are used onthe front wheels and double tires on the rear wheels. Thewheel base is 13 ft. The cars are equipped with twoSiemens interpole motors of 20 hp each. These motorshave shunted fields and are suspended below the frameof the chassis. Each motor drives a countershaft through. Bradford Trackless Trolleys—Type of Rolling Stock worm gearing immersed in oil and the drive from thesecountershafts to each of the rear wheels is by chainsand sprockets which are inclosed in a metallic dust-proofcase. A large part of the weight of the cars is carriedon -the rear wheels. This increases the tractive effortand facilitates steering by the front wheels. The motorshave a maximum speed of 1050 on 525 volt currentThey are geared to give a maximum speed of 10 the car. The controller is of the Siemens series-paralleltype and is provided with special connections for cuttingout either motor. The controller has nine positions, ofwhich five are running positions, giving various rates ofspeed up to 10 The steering gear is designedto permit the car to be turned in a radius of 12 ft. measuredfrom the rim of the inside rear wheel. The cars arelighted from incandescent lamps connected in the trolleycircuit. Two sets of brakes are pro
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
