| 摘要 |
940,068. Theft alarms. HARTWOOD ALARMS Ltd., and H. HART. March 30, 1961 [May 13, 1960], No. 17051/60. Heading G4N. In a motor vehicle in which the horn 41 is operable only when the ignition switch 43 is closed, a keyoperates switch 31 having four pairs of contacts E, F, G, H, may be left in the position shown in Fig. 1, in which the ignition circuit is broken between the coil 44 and the contact breaker 45 and closure of the ignition switch 43 causes the horn 41 to sound. The key-operated switch 31 has two other positions, for switching on the ignition, Fig. 2, and starting the engine, Fig. 3, respectively. |
