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Russia 1925 stock footage and images
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United States Army Air Force footage of Berliner helicopter 1925 variant being tested in Washington D.C.
United States Army Air Force footage of a helicopter designed by Emile Berliner and Henry Berliner being tested in Washington D.C.,United States. This was one of the final Berliner models built, if not the final, constructed after the triplane model 5 variant that had been demonstrated in February of 1924. This variant had a biplane configuration and was lighter to improve the thrust to weight ratio. The lower wing generated lift from the rotor downwash due to a high angle of incidence and large camber. The helicopter repeatedly lifts off, hovers, does some forward movement, and then touches the ground.
U.S. Navy fleet exercise and war game during 1925.
Line of U.S. battleships, including 1917 class (New Mexico class) such as the USS Idaho, USS Mississippi, USS New Mexico. Image of U.S. Capitol in Washington seen. U.S. Navy sailors parading in Washington, DC. Crowd gathered at Washington monument. Sailors on signal bridge of a U.S. warship, hoisting signals. Ships in distance. U.S. Navy sailors, aboard a destroyer, launching depth charges which explode and produce upsurge of water, behind the vessel. Sailors hurrying to their battle stations.
Explanation with diagrams, of the oil refining process and oil refining techniques in 1925
Using a beaker labeled crude oil, a man demonstrates that it yields petroleum products of 30% gasoline, 20% kerosene, and 42% lubrication oil and wax, and 5% coke. Animated diagram shows layers of rock and wells being drilled to various depths to tap oil reservoirs, avoiding water pockets. Another chart shows successive layers of natural gas, oil and salt water that may be encountered. On the surface, the boiler, mud pond, derrick, engine and pump are identified at drilling site. Well casing, drill and movement of drilling products are illustrated.
Scenes of Naval Operating Base, Hampton Roads, Virginia in 1925
Naval Operating Base, Hampton Roads, Virginia (renamed U.S. Naval Station Norfolk, in 1945 ). U.S. Navy Commander seated in a chair aboard a ship. A large group of civilian businessmen and officials pose on board a ship with several American Navy officers and one British Naval officer, for a photograph. Some of them stand and some are seated. One civilian stands in front of the group and poses with an American Navy Captain. Change of scene shows Admiral Way on the Navy Base, containing mansions and other structures from the 1907 Jamestown Exposition. It is a very windy day and several civilians are seen on a sidewalk and entering a large building on Admiral Way. Numerous Navy personnel in uniform are seen in the area, including a number of Naval officers entering that building and others heading there along a sidewalk. Residential mansions are seen in the vicinity along Admiral Way.
Coverage of the fabrication of the helicopter in factories of Netherlands in 1925.
A helicopter is drawn out in fields by men. Two men carrying out helicopter fabrication process in a factory. Men working on landing gear. Men working on a cone made up of sheet metal which is attached to a worm wheel. Rotor axis is mounted on gear box. View of men working on rotor blades of helicopter which are pivoted universally to the main rotor axis. Men are shown working with fuselage and tail section of helicopter. (World War II period).
Helicopter rising to a short distance and descending in the first flight tests at Soesterberg in 1925.
Shows men assisting helicopter to rise. Helicopter rises to a short distance and descends. The action is repeated and finally the helicopter tilts on its side and is held by men.
