Patent GB-190612787-A (GB)
Title: Improvements in and relating to Station Indicators
Inventor: MANN PETER JOSEPH
Filed: 1906-06-01
Granted: 1906-12-20
Abstract: 12,787. Mann, P. J. June 1. Indicators, station, stopping - place, a n d like.-Relates to a station indicator in which the names of the stations with advertisements are carried on a band wound upon rollers and are displayed at apertures in a casing, the apparatus being operated by an eleetro-magnet controlled by stops on the line. The band 14 is wound on rollers 13, and passes over a lower guide roller 17 and between a driving- roller 16 and tension rollers 15, which are geared together so that the band may be positively driven in either direction. The tension rollers 15 are spring - pressed, but may be held out of engagement by catches 26. To ensure that the rollers 13 rotate at the proper varying speed, each is provided on an extension of its axle with a spool 30, over which passes a tape 31 of the same length as the band 14 and enclosed by an endes belt 29, which, being provided with a spring fastening 32, can yield slightly to accommodate itself to the varying shapes it must assume as the tape is wound from one spool to the other. An electro-magnet 33 is energized at each stopping-place, and attracts its core 38 downwards, thus causing a rack 45 connected thereto, Fig. 11, to engage and drive a segment 54 upon a shaft 52 which is mounted in bearings on a framework 55. The shaft 52 is capable of longitudinal movement and may be locked in either of two positions by a hand-lever 58, which may be placed in one of two slots 56 in different vertical planes and retained there by a spring-urged pin 57. The segment 54 is wide enough to engage always the rack 45. The shaft 52 carries a frame 60 carrying two segments 61, 62, adapted to engage pinions 63, 64 loose on the axle of the driving-cylinder 16. These segmeuts are so arranged that in one position of the shaft 52 the segment 62 engages the pinion 64, the other segment being free of the pinion 63, and in the other position of the shaft 52 the other segment and pinion are engaged, so that the hand-lever 58 constitutes a reversing- lever. Between the pinions 63, 64, and keyed to the shaft, is a clutch disk 73 in which is a pair of hollow pins 75 on each side continually pressed outwards by their springs 77 to engage oppositelydisposed clutch notches in disks 70, 71, which are attached to the pinions 64, 63, so that the pins 75 are caused to retreat into their holes when the pinions are driven one way without driving the member 73, this being necessary on account of the rack 45. which engages the segment 54 in both its driving and return movements. The frame 60 carries a hammer 84 adapted to strike one of the gongs 81 at each actuation of the apparatus. The gongs are not set at the same distance from the frame plate 6, Fig. 6, to allow for the fact that the shaft 52 is moved longitudinally when the motion is reversed, so that one gong is struck for one direction of motion, and the other for the other direction. The electro-magnet 33 is energized by means of a switch placed beneath the carriage, and having a lever 104 which is adapted to be swung to one side by stops on the line. The motion of the lever 104 rocks a shaft 102, Fig. 10, carrying between ears 101 rollers 103, which engage a rib 100 on a bell-crank lever 97, thus turning the lever against a spring 99, and pushing forward an insulating-block 95 carrying spring arms 94 connected by a brush contact 93, which is thus caused to bridge a gap between two brush contacts 92 attached to plates 91 on an insulating-block 90.