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Aviation History
1952
1952 - 2366.PDF
58 FLIGHT 29 AUGUST 1952 VENNER AIRCRAFT EQUIPMENT STANDS at S.B.A.C. Nos. 187 & 188 VENNER TIME-DELAY SWITCH, Type PTC/DH as fitted to the ignition system of the de Havilland "Vampire" and "Venom" jet aircraft. It is designed to switch ON the high ignition side of the ignition system for a predetermined time, for initial starting on the ground and for relighting in the air. This timing device is spring operated, the action of setting the knob winding the spring which obtains the delay period. VENNER EMERGENCY LIGHTING UNIT An Emergency Aircraft Lighting Unit has been developed, this being a self-contained unit operated by an inertia switch (variable), and the source of power being a built-in Venner Silver Zinc Accumulator. The advantages of this unit are: firstly, a definite assurance of lighting in the event of a crash and the elimination of external wiring; secondly, due to more than one unit being installed, the probability of all being destroyed are remote; thirdly, they can be easily serviced, the accumulator being readily charged; fourthly, they can be removed by two quick fasteners and used as hand lamps in times of emergency. Weight, with accumulator, only 1 lb. VENNER TIME-DELAY SWITCH, Type TDS/359 is used extensively in leading British military aircraft with fully feathering propellers. This switch is specially designed for use in aircraft fire- extinguisher systems to delay discharge of the main methyl bromide spray until the engine has come to rest. Can also be adapted to disconnect the batteries within a specific period of time in the event of a crash. VENNER LIGHTWEIGHT ACCUMULATOR This type D27A silver-zinc accumulator is fitted to the Airspeed Ambassador for emergency cabin lighting. (Weight only 18 oz.) FOR AUTOMATIC RADIO BEACON OPERATION SPECBFY THE VENNER CODER SWITCH A fully automatic switch for the transmission of a predetermined call-sign once in every 30 seconds. Leaflets for above sent on request to Dept. SB LIMITED Kingston By-pass, New Maiden, Surrey. Telephone: Maiden 2442
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