GB189718730A - Improvements in and relating to Motor Vehicles for Electric Railways and Tramways. - Google Patents

Abstract

18,730. Short, S. H. Aug. 12. Electric locomotives and motor vehicles.-Relates firstly to bearings, secondly to rheostats, and thirdly to brakes. Fig. 1 (Sheet 2) shows the bearings for the motor shaft and driven axle. Liners C, made in halves with their junctions out of the line of thrust, are held in box castings U by dowels V. The box for the axle A is in two parts. Wells L in each box receive lubricant and a spring S which presses waste against the axles through openings in the liners. Fig. 2 (Sheet 3) shows the rheostats. Hubs A with forked arms B are strung on an axis in a casing, and a coil of strip iron with insulating-material is wound in a mica trough in the arms. The ends of the strip are held by the clamp K to which the inner end F of the adjacent coil and the wire P leading to the motor circuit are connected by binding-screws. Fig. 1 (Sheet 4) shows the brake. Bars D of copper pass through insulating-sleeves in the rim of a brake-wheel B, and are short-circuited on copper rings E. Brake shoes K bearing on the periphery of the wheel are hung on the ends of a magnet core which is energized from any suitable source, such as the trolley wire, or by causing the motors to act as generators. When the core is excited, there is an electric braking action in the inductor bars D as well as the frictional effect of the shoes K. This brake-wheel may be mounted on the motor axle or on an intermediate or wheel axle.