Patent GB-191311739-A (GB)
Title: Signalling Apparatus for use on or in connection with Railway and Road Vehicles and Air and Water Craft.
Inventor: STOBWASSER HERMAN
IPC: B60Q1/34
Filed: 1913-05-20
Granted: 1914-04-16
Abstract: 11,739. Stobwasser, H. May 20. Road-vehicle signals; lamps, semaphore, and transparency signals.- Relates to means for indicating the action of a series of mechanical signals to its operator, to actuating-devices described in connexion with motor - car signals, and to signals comprising revolving transparency indications or an illuminated semaphore. Improvements in joints for electricconductor conduits and in the mounting of an electric lamp are also described. The invention is applicable to railway and road traffic signalling, and to road vehicles, aeroplanes, ships, and other craft. The disks 6, 7, Fig. 1, are co-axial with the steering-wheel of a motor-car and operate two or more left and right hand turning signals respectively, these signals being mounted at the back and sides of the car. The disks 6, 7 are turned by a disk 9, which is frictionally controlled by the spring 10, and is operated by a handle 16, Fig. 4, which slides in a tube 15 and is axially spring-controlled. Its axial travel is limited bv a pin 21 which moves in a slot in the tube 15, and its rotation is limited by the same pin in engagement with the tappet 23 which corresponds to a turning signal. But by pulling out the handle 16 and moving it over the tappet 23, a further rotation limited by a second tappet 24 can be imparted in order to give a stopping signal. The disk 9 has a projecting pin 25 which enters slots 6<a>, 7<a> in the disks 6, 7, the slots being so arranged that the disk 6 is turned when the handle 16 and disk 9 are turned to the left, but is unaffected when these are turned to the right, while the disk 7 is oppositely acted upon. The motion of each disk 6, 7 is limited by a pin 33 which engages the edge 34 of a cut-away sector of the disk, and wear of this edge can be compensated by turning a wedge-shaped screw 36 which works in a radial cleft in the disk. The stopping signal is actuated by either disk when a rotation greater than that necessary to give a turning signal is imparted to it. Such rotation is, on the use of the brake, given to the disk 7 automatically by a disk 8 which tends to turn under the influence of a spring 30, but is normally retained by a pin 38. The pin is withdrawn by the cable 42 when the brake pedal is depressed. The disk 8 can be reset by the pin 28 of the disk 7, which normally moves freely in the slot 29 but engages the end of the slot when the disk 8 is in the signalling position. The signal devices are arranged in two series at the back and sides of the car, the members of each series giving identical signals. They are actuated by cables 26, 27, and are so arranged that the last signal device of each series is visible to the driver, so that failure to act is notified to him. In one form, such devices may consist of pivoted arms having each an illuminated glass tube or half - tube 74 and an illuminable surface 76. The tube 74 may be made in halves to facilitate replacement. A mercury gravity switch is provided, so that the arm may be illuminated only in the signalling position. The lighting leads are taken into the arm through a special swivel joint, Fig. 14, in which a fixed tube 64 mounted on a bracket 63 projects into the tube 65, which rotates with the signal arm. A special lamp is used, Fig. 13, comprising a lens and bulb the mounting of which screws into a split cone 84, which is attached to the supporting-cylinder by a bayonet-joint. The parts of the cone may be drawn together by screws or conical sleeves. The necessary electric contact is made through a spring-controlled pin 86. Alternatively, the signal device may comprise either one or two lamps having revolving transparent illuminated disks or stencils bearing indications which signal the intention of the driver by their angular positions. Where two disks bearing transverse lines are employed. they may be turned successively by the continued movement of the lever 16 by means of a contrivance on the lamps.