Abstract: Two ignition plugs are provided for each cylinder of an engine. Since it is desirable that these two plugs be sparked by one ignition coil, separate output terminal of a secondary coil of the ignition coil are respectively connected to each of the two plugs. An impedance circuit element is provided between one terminal of the secondary coil and ground to disturb a balance of the output voltages from the secondary coil terminals. The voltage of the other terminal of the secondary coil then reaches the break-down voltage between the air gap of its respective ignition plug first due to this imbalance of terminal voltages. The voltage of the one terminal then reaches the break-down voltage between the air gap of its respective ignition plug after the breaking-down of the other ignition plug. The two ignition plugs of each cylinder can thus be sparked at approximately the same time by providing the impedance circuit element between one output terminal of the ignition coil and ground.

Abstract: A flame detection system responsive to an arc triggering voltage in a spark gap having at least a portion located in a flame is used to control spark generating equipment. A pulse generator used to trigger the arc is inhibited upon detection of a lowered spark triggering voltage resulting from ignition of a flame.

Abstract: A hand-operated portable electric ignition device for the ignition of gas comprises within an insulating housing means for producing from a battery relatively high voltage alternating current pulses in response to the operation of a manually-operable switch, said means including a transistor oscillator circuit, rectifying means for rectifying the alternating current pulses for charging a capacitor and means arranged to conduct to provide for the discharge of the capacitor through the primary of a transformer in the output circuit of which is a spark gap across which sparking occurs when the charge voltage on the capacitor reaches a predetermined value.

Abstract: An oscillator utilizing a negative resistance light emitting semiconductor diode is connected in series with voltage booster means which in turn provides a high voltage to electrodes of a gas igniter. Discharge of the gas between the electrodes occurs with the aid of the high voltage derived from the voltage booster means to thereby effect an ignition of the gas. Light emission from the diode in the absence of gas ignition is indicative of a deficiency in the supply of gas, while the absence of light emission in the absence of gas ignition is indicative of a deficiency in the operation of the oscillator circuit.

Abstract: A combination of an electronic timepiece with a liquefied gas fueled cigarette lighter is proposed. A common source battery is used for the bath main constituents. The spark ignition circuit for the gas lighter is fitted with a diode for the prevention of otherwise possible electrical switching shock as appearing during the on-off control of the high voltage spark generation for igniting the fuel gas. Several points of the overall circuit are positively earthed for the same purpose.

Abstract: An ignition system for heating appliances which burn gas or vaporous fuels. A spark igniter is programmed to ignite a pilot burner which in turn ignites a main burner. A flame rod is used to confirm to the control circuitry that pilot ignition has taken place before the main gas valve is opened. An initially closed timing control circuit opens the pilot gas valve but times out if ignition of the pilot does not occur within a predetermined time. Other circuit interlocking features are provided for overall fail-safe operation.

Abstract: A fuel ignition control arrangement for use in a fuel ignition system includes a control circuit responsive to a thermostatically-controlled circuit element for the fuel ignition system for causing a gaseous fuel to be supplied to burner apparatus of the system, a spark-producing circuit responsive to the thermostatically-controlled element for igniting the fuel supplied to the burner apparatus, a timing circuit responsive to the thermostatically-controlled element for de-energizing the control circuit after a predetermined timing interval, and a flame sensing circuit responsive to the ignition of the fuel supplied to the burner apparatus for maintaining the control circuit in fuel supplying condition.

Abstract: A capacitor discharge ignition system utilizing in-phase charging and trigger coil waveforms with automatic spark advance with increased engine speed, force commutation of the electronic switch of the ignition circuit, automatic speed compensation for variations in temperature and lamination gap, prohibition of engine reversal and an extremely low impedance manual shutoff of the engine.

Abstract: An electrically-ignited gas lighter with a capacitor discharge ignition circuit is provided with a blocking oscillator and an oscillation transformer to increase the level of the voltage from a single silver oxide battery of 1.5 volts to a higher level of at least 100 volts for charging the storage capacitor through a half-wave rectifier. A triggering circuit is provided to discharge the storage capacitor automatically and periodically through a silicon controlled rectifier at a predetermined voltage.