Patent GB-289057-A (GB)
Title: Improvements in current collectors for high speed railways
IPC: B60L5/06
Filed: 1928-04-18
Abstract: 289,057. Kruckenberg, F., and Stedefeld, C. April 21, 1927, [Convention date]. Trolly heads and pulleys; supporting arrangements for collectors; conductors for electricity, and arrangements of with respect to track.- Electric high-speed railways, such as mono-rail suspended ways, have a current collector comprising one or more pairs of pivotally carried wheels pressed in opposite directions against a single conductor by a spring or springs on the trolly acting in common on both wheels of a pair, so that if one member leaves the conductor the other one is pressed more strongly. The trollies 112, 113, Fig. 13, may be carried by levers 115. 116 pivoted at 117 to the support or a lever carried thereby, and under the action of compression or tension springs. Laminated springs may be connected direct to the trolly journals or to levers 69, 70, Fig. 4, bearing against the support. The trollies may be staggered or arranged in sets of four, Fig. 27, on a scissors arrangement of levers. The conductor rails may be double headed, with round heads, Fig. 4, or wedge-shaped heads, Fig. 8, inverted V-shape, Fig. 6, or inverted U- shape, or may be similar to the track rails 167, Fig. 16, and may be erect, inverted, or horizontal. The support arms may be carried by universal joints 173 on the vehicle-body 172, or brought nearer the centre of swing by attachment to the axle boxes 234, Fig. 27, and the arms may comprise rods or ropes 231 connected between pairs of supports. With staggered wheels, they may be mounted on arms 205, Fig. 22, pivoted to a tube 207 carried by ball-bearings 215 within a tube 208 pivoted on the car, the tubes being connected together by a torsion spring 212. The conductor, shown mounted between the track rail and the car, may be placed beyond the track rail, with the trolly arm under the action of a spring or counterweight. The trolly head may be connected to the car by an arm having a universal joint at each end. The trolly pulleys are shaped to suit the surface of the conductor rails, and may have a certain sliding engagement to remove foreign bodies. In addition to the differing radii of the pulley, positive sliding may be obtained by connecting the wheels 112, 113, Fig. 13, by gearing 107, 110 of a different ratio. The shaft 111 is held in the housing 118 but slides in relation to the housing 119, while both housings can rotate with respect to the arms 115, 116. The Specification as open to inspection under Sect. 91 (3) (a) shows in Fig. 26 (Cancelled) an alternative arrangement of staggered collectors, and in Fig. 22 (Cancelled) a modified support comprising trolly forks 145, sliding in guides carried by a bridge 147 pivoted to the arm 151 and under the action of a spring or counterweight. The arm 151 is spring-pivoted to a pendant arm 152 hinged to the car. Skate collectors.-The wheels mav be replaced by shoes 125, 126, Fig. 19 (Cancelled), engaging within a U-shaped conductor 124, or pressed upon opposite sides of a rail such as 51, Fig. 4. This subject-matter does not appear in the Specification as accepted.