Bond, A. Russell (Alexander Russell), 1876- · New York, The Century co. · leaf 206
ballonets. These air-bags were placed inside the gas-bags and as thehydrogen expanded it would force the air outthrough valves, but the hydrogen itself wouldnot escape. When the hydrogen contracted, theair-bags were pumped full of air so as to main-tain the balloon in its fully distended… … (C) Underwood & Underwood Giant British Dirigible built along the lines of a Zeppelin
Inventions
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