Patent GB-191107775-A (GB)
Title: Improvements in or relating to Vehicle Lamps.
Inventor: MACDONALD ARTHUR ERNEST
IPC: B60Q1/076
Filed: 1911-03-28
Granted: 1912-03-28
Abstract: 7775. Macdonald, A. E., and Edge, S. F. March 28. [Cognate Application, 9149/11.] Burners, mounting and adjusting.-In vehicle head-lights the source of light, or the reflector, or both, are connected with the steering - mechanism so that one or both of them is moved in relation to the lamp casing when the direction of the vehicle is changed. Manuallycontrolled operative connexions may also be provided. A gas-connexion B is screwed to a base A inside the lamp casing, and is provided with a projection on which is rotatably mounted a drum C having oppositely disposed ratchet teeth C<1>, C<2>. The burner D is mounted in a hole passing through the drum C in a gas-tight manner, and the drum C is provided with an arm E, on which is mounted a reflector E<2>. A lever F, Fig. 2, carrying a spring-pressed pawl F<2> is pivotally mounted. at F<1>, and provided with a spring F‹, which normally keeps the end F<4> of the lever away from the electromagnet F<5>. A similar lever G is mounted on the other side of the drum. A contact drum H, Fig. 1, is carried by the drum C and rotates with it, but it may be connected by gearing to rotate at a different speed. The drum H may be mounted separately and provided with ratchet teeth to be engaged by pawls on the levers F, G similarly to the drum C. The contacts on the drum H are in touch with brushes K<1>, K<2>, Fig. 5, which are spaced so that, when one is engaged by a contact, the other is between it and the next contact. The brushes K<1>, K<2> are connected to alternate contacts of a number of contacts J by connecting them to terminals J<1>, J<2>, and the contacts on the drum H are earthed. The contacts J are engaged by an arm comprising a metallic portion J<3>, which is connected to, but insulated from a pin J<5> operated by the steering-gear of the vehicle. A bifurcated member J<6> carrying contact-screws J<7>, J<8>, which are insulated therefrom, is secured to the pin J<5>. The arm J<3> is electrically connected to a terminal J<9>, and the terminal J<10> is connected to an arm which connects the arm J<3> and pin J<5> but is insulated from both. The contacts J<7>, J<8> are connected to terminals J<11>, J<12>, which are connected to the electromagnet coils F<5>, G<5>, Fig. 2, respectively, the other ends of these coils being earthed. A battery or other source of electric current is connected through a switch across the terminals J<9>, J<10>. When the arm J<3> is moved in either direction, one of the screws J<7>, J<8> bears against the metallic projection J<13>, and the circuit is completed. One of the electro-magnets F<5>, G<5> is energized, and the corresponding lever F, G attracted, thus bringing one of the pawls F<2>, G<2> into contact with the drum C and rotating it. In modified constructions, the electrical control is replaced by a double-acting fluid compressor which actuates a double - acting piston connected to the reflector, or the steering-gear and reflector may be connected by rods, cables, or Bowden wires. The reflector and source of light can be mounted at either end of a central pivoted arm, or the burner can be arranged to move independently of the reflector.