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Aviation History
1929
1929 - 0323.PDF
FEBRUARY 14, THE " HEENAN-FELL " PATENT VARIABLE AIR BRAKE DYNAMOMETER (As used by the British Air Ministry, etc.) Specially designed for the production testing of Aero Engines running at sub- stantially similar speeds of airscrew shaft. This apparatus supplies an air blast of sufficient volume and velocity to ventilate air-cooled engines without requiring the ex- penditure of power from any external source. Simultaneously it measures the power developed by the engine undergoing test with the same degree of accuracy as offered by the " Froude " system. If professionally interested, send for free copy of illustrated Catalogue No. 80. Heenan & Froude Ltd Worcester England mum iniiiii uimiii iiiiinii niiiiiii iiiiiiiii IIIIIIII IIINIII iiiiiiii iiiitim ACCESSIBILITY This is an outstanding featureof the New Type Power Jet CARBURETTER 1. Immediate removal, by one operation, of slow- running jet assemblage without alteration to setting. 2. Immediate removal, by one operation, of main jet. 3. Immediate removal, by one operation, of power jet. 4. Immediate removal, by one operation, of needle valve seating after detachment of petrol pipe. 5. Detachable air intake, giving easy access to choke tube. 6. Easy removal of choke tube. 7. Air shutter for starting purposes. H. M. HOBSON, LTD., 47-55, The Vale, Acton, London, W.3. 'Phone; Chiswick 4231 (4 lines). 'Grams: " Assemblage, London." Generous allowance forOld Type Carburetters IIIIIIII IIIIIIII miiim— iiiiiiii iimin mmim inmuL •»«»!uliiiii iiiinti IIIIIIII IIIIIIII Save time by using the Air Mail. xxi A.J.W.
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