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The extremities of its wings were made to flap, and the driving power was obtained from a cylinder of compressed carbonic acid gas, released through a hand-operated valve which, Lilienthal anticipated, would keep the machine in the air for four minutes.
"A Lloyds surveyor in testing one of these hand-operated doors started two men on the main deck to close it. They worked four hours before they had carried out his order. If all the doors on the ship had worked as badly as this one, what would have happened in event of accident?"
Captain S. R. Donohue set up a newspaper office at the west corner of Sager Avenue and Payne Street. He had operated a paper of his own in Alexandria called "The Alexandria Times". When he moved to Fairfax, he brought his printing press with him. This press, which was the first in Fairfax, had to be hand-operated by two men and can still be seen today in the present Fairfax Herald Building.
German equipment at the outset, which put the Allies at a disadvantage, included a hand-operated magneto engine-starter and a small independent screw which, mounted on one of the main planes, drove the dynamo used for the wireless set.
The speed variation of this engine was obtained by varying the extent and duration of the opening of the exhaust valves, and was controlled by the pilot by hand-operated levers acting on the valve tappet rollers.
The steam after passing through the valve, which, in the case of small turbines, is hand-operated, goes in turn through the automatic stop-valve B, the function of which is to automatically shut steam off should the turbine attain a predetermined speed above the normal, the steam strainer C, and finally through the governing valve D into the turbine.
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