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Aviation History
1939
1939 - 1817.PDF
Advertisements. JUNE 15, 1939 VOKES 99*9% Efficient QflLTRATION for aircraft J is no easy problem—ques tions of weight and space are all importan'. The air filter must not restrict the air flow and the oil fil'er must not result in appreciable reduc tion of oil pressure, whether the oil is cold or hot. Because Vokes have solved these problems, their equipment is VOKES LIMITED, 95-105 LOWER standard on leading aircraft to day. Owners of civil aircraft will do well to follow the lead of the Air Ministry and fit Vokes filters. They reduce wear, increase reliability and assist to safe flying at all times. Operational periods under severe conditions are greatly extended by their use. On filtration consult RICHMOND RD., PUTNEY, 8.W.I5 MODtRH «4H0S fWei*! vv BRILYBDENUM // MOIY80ENUH IRON. ALLOY PISTON RINGS Hf&tf TBMSikt STHEHCW * HIGH ELASTIC VALUE MAtHTAlHS HIHC mUSiiU UH&£& EXTREME HEAT O&iS #&f Stitff LATEST AIR MINISTRY MATERIAL SPEC. B.TD. 2f7 Manufactured by THE BRITISH PISTON RING CO.. LTD.. COVENTRY
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