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1940 s

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Wright-Patterson Air Force Base, Area B, Building 250, Rotor Test Tower, Dayton, Montgomery County, OH

Wright-Patterson Air Force Base, Area B, Building 250, Rotor Test Towe...

Significance: The rotor test towers at Wright Field have been the Air Force's only in-house rotor test facilities and have been used to verify the integrity of helicopter rotors. When in use, the nearby gyrosc... More

Conversion. Electric shaver plant. Normal peacetime work of this New England plant is the production of electric dry shavers. The worker on this Norton type C six-inch semi-automatic cylindrical grinder normally grinds the rotor shaft for the motor of the shaver using this set-up. He has since been shifted to the making of spring collets to be used in machine tools being made to further the war production effort (see pix #D-2973). Schick Inc., Stamford, Connecticut

Conversion. Electric shaver plant. Normal peacetime work of this New E...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Philadelphia, Pennsylvania. Stator frame of the 30,000 kilowatt generator which Westinghouse Electric Company is manufacturing for the Watts Bar Dam of Tennesse Valley Authority (TVA). It is lined with thousands of armature coils, and over 100,000 sheets of laminated iron which serve to conduct the electricity. The stator frame is part of the generator inside of which revolves the rotor or revolving part. The whole frame weighs 425,000 pounds and is shipped in four quarter sections. A worker measures the resistance of the windings. The frame measures 378 inches in diameter

Philadelphia, Pennsylvania. Stator frame of the 30,000 kilowatt genera...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Tennessee Valley Authority. The stator, rotor and exciter of a new generator unit in place at TVA's hydroelectric plant at Wilson Dam. Completed units show in the background. Located near Sheffield, Alabama, 260 miles above the mouth of the Tennessee River, the dam had an authorized power installation of 288,000 kilowatts, which can be increased to a possible ultimate of 444,000 kilowatts. The reservoir at the dam adds 377,000 acre feet of water to controlled storage on the Tennesse River system

Tennessee Valley Authority. The stator, rotor and exciter of a new gen...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Potomac Electric Power Co. Benning plant. Installation of rotor for 25,000 kw frequency changer at Benning plant

Potomac Electric Power Co. Benning plant. Installation of rotor for 25...

Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.

Conversion. Electric shaver plant. This worker in a New England plant that normally produces electric dry shavers is now busy turning out spring collets for machine tools to be used in war production. On this Norton type C six-inch semi-automatic cylindrical grinder, he used to turn out rotor shafts for the motor of the shaver. To convert his machine to the larger grinding job, it was necessary only to exchange the normal one-inch vitrified aluminum oxide wheel for a three-inch wheel and to increase the feed of the cooling solution. This worker was used to working to a tolerance of .0002 inches on the motor shafts so he finds it simple to attain the comparatively rough tolerance of .002 inches required on this war work. Schick Inc., Stamford, Connecticut

Conversion. Electric shaver plant. This worker in a New England plant ...

Picryl description: Public domain photograph of a car, 1930s, free to use, no copyright restrictions.

Navy not interested. Washington, D.C., April 26. The U.S. Navy is not interested in experimenting with autogiros but would be pleased if someone else were to develop them to a point suitable for naval use, Assistant Secretary of the Navy Charles Edison told the House Military Affairs Committee today. He was testifying at the hearing on a bill by Rep. Frank Dorsey to authorize a $2,000,000 appropriation for experimentation by the War Department with the rotor type of aircraft, 4/26/38

Navy not interested. Washington, D.C., April 26. The U.S. Navy is not ...

A black and white photo of a man sitting at a table. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Production. Diesel engines. Blower rotor that will soon be assembled into diesel engines for the Navy at a Midwest manufacturing plant

Production. Diesel engines. Blower rotor that will soon be assembled i...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

In spotlight at Congressional autogiro hearing. Washington, D.C., April 26. Highlight of today's news on Capitol Hill was the autogiro hearing before the House Military Affairs Committee, with Assistant Secretary of the Navy Charles Edison as the first witness. Outstanding aviation experts were asked their opinion of the value of rotor type of aircraft in time of war. Here we see, left to right: Prof. Alexander Klemin, Dean of the Guggenhein School of Aeronautics, New York City; Rep. Andrew J. may, Chairman of the House Military Affairs Committee, and Assistant Secretary of the Navy Charles Edison, 4/26/38

In spotlight at Congressional autogiro hearing. Washington, D.C., Apri...

A group of three men standing next to each other. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Wright-Patterson Air Force Base, Area B, Building 250, Rotor Test Tower, Dayton, Montgomery County, OH

Wright-Patterson Air Force Base, Area B, Building 250, Rotor Test Towe...

Significance: The rotor test towers at Wright Field have been the Air Force's only in-house rotor test facilities and have been used to verify the integrity of helicopter rotors. When in use, the nearby gyrosc... More

Wright-Patterson Air Force Base, Area B, Building 250, Rotor Test Tower, Dayton, Montgomery County, OH

Wright-Patterson Air Force Base, Area B, Building 250, Rotor Test Towe...

Significance: The rotor test towers at Wright Field have been the Air Force's only in-house rotor test facilities and have been used to verify the integrity of helicopter rotors. When in use, the nearby gyrosc... More

Tank manufacture (Chrysler). Traveling overhead hoists are used throughout the huge Chrysler tank arsenal in Detroit, for moving heavy castings from one production operation to another. These workers are removing the rotor casing for a 75 mm gun turret from a machine which grinds the outside rim. The twenty-eight ton "medium" tanks M-3s produced here carry 75 mm field guns and 37 mm anti-aircraft guns as well as several machine guns and other small arms

Tank manufacture (Chrysler). Traveling overhead hoists are used throug...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Washington, D.C. The new president of the Philippines shown with the new cabinet. Front row; left to right: Jaime Hernandez, Secretary of Finance; President Sergio Osmena; Colonel Carlos P. Romulo, Resident Commissioner and Secretary of Information. Back row, left to right: Colonel Mariano A. Erana, Judge Advocate General of the Army of the Philippines in charge of the Department of Justice, Labor, and Welfare; Dr. Arturo B. Rotor, Secretary of Agriculture and Commerce; Ismael Mathay, Budget and Finance Commissioner; Colonel Alejandro Melchor, Under Secretary of National Defense representing General Basilio Valdesm the Secretary of National Defense

Washington, D.C. The new president of the Philippines shown with the n...

Picryl description: Public domain image of a political campaign, politician, meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

Checking the blades in a turbine rotor assembly

Checking the blades in a turbine rotor assembly