Patent GB-417434-A (GB)
Title: Improvements in connection with vehicle lighting for parking
IPC: B60Q1/48
Filed: 1934-01-26
Abstract: 417,434. Switching systems for motorvehicle lamps. EVANS, C. J., and EVANS, S. C., 99, London Road North, Lowestoft. Jan. 26, 1934, No. 12578. Divided out of 412,604. [Class 38 (iv).] A lighting arrangement for a vehicle fitted with normal and reverse lighting circuits, either of which can be used at will, comprises a device arranged so that the vehicle cannot be driven forwards but can be reversed with its lighting reversed and the reverse lighting circuit can be closed only by a manual or foot-actuated switch. In the arrangements shown, 176, 180 represent the usual switches for the lighting and ignition circuits respectively, 179 the ignition device whilst the circuits for normal and reverse illumination are denoted by 177, 178. In the form shown in Fig. 40, the ignition 179 is switched off when the hand switch 82 is rotated clockwise to illuminate the reverse lights 178, 183 but a plunger switch 95 is so mounted with respect to the reverse gearing that the ignition is re-connected when the gear is operated. In a modified form, the ignition is automatically cut off only if a forward gear is engaged. In the form shown in Fig. 46 a combined switch 116 and fuel cock 117 as described below with reference to Fig. 17, is provided so that when the lighting is reversed by the switch, the fuel is deflected from the engine 186 to the cock 126 which automatically interrupts the fuel if a forward gear is engaged, this cock being operated by a plunger acted on by the gear mechanism. In a further modification, a plunger is actuated to allow fuel to pass to the engine only when the reverse gear is operated. As shown in Fig. 45, engagement of a forward gear operates switch 95 to close solenoid circuit 144 of switch 143 if the reverse lights 178 are on, and the switch 143, returns the lighting to normal. The same effect may be produced by means of a plunger type change-over switch. The spindle of switch 143, Fig. 27, carries segmental contacts 60, 61 which bridge fixed contacts 64, 67 and one of the contacts on either side thereof and the spindle is hinged to a core which is attracted when the solenoid 144 is energized and the spindle is thereby rotated to bridge the contacts corresponding to normal lighting. The switch part 116 of the device used in the arrangement shown in Fig. 46 is similar to switch 143 with the omission of the electromagnet but its spindle sleeve has fuel apertures 119, Fig. 17, co-operating with the bored stem 118. The cock 126 which is also used with this arrangement is constructed on similar lines but with the stem movable axially by means of a plunger, whilst to disconnect the ignition automatically when the plunger is operated a switch having fixed contacts as in Fig. 17 but with axially movable segmental contacts would be combined with the fuel cock. Additional circuits for both directions, which may include warning lamps, may be provided, as represented by 182, 183 in Figs. 40, 45 whilst the switch may also control the battery charging rate. If such circuits are not provided, however, the number of contacts on the hand switches may be reduced. Methods of mounting the plunger switches relatively to the gear mechanism are described.