Push button electrical combination ignition lock

An electrical switching device connected to the ignition circuit of the motor of a vehicle which permits connection of power to the ignition circuit when the proper combination of switches mounted on the device are simultaneously manually operated and which disables the electrical circuit when one or more disabling switches are manually operated comprising

• a switch box on which a plurality of push buttons are mounted for the individual operation of momentary normally open switches, with a first group of said switches wired together in series to a circuit for connecting a self-latching relay to a power supply circuit, and with
• one or more of a second group of said switches wired in parallel together, and to a circuit joining the opposite poles of the power supply circuit, together with
• an electrical fuse connected in series with the power supply line leading to all the switches of the second group and to one of the switches of the first group, such that operation of any of the parallel wired switches will cause the fuse to blow,
• said relay having a normally open contactor that joins the ignition circuit of the motor through said fuse to the power supply when the relay is in the energized state.