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Production. Pratt and Whitney airplane engines. A gear for a Pratt and Whitney engine is tested for hardness on a Rockwell machine in a large Eastern plant now producing a steady flow of airplane motors for the planes that will help us bring victory. Pratt and Whitney Aircraft

Production. Pratt and Whitney airplane engines. A gear for a Pratt and...

Public domain photograph of aircraft engine, free to use, no copyright restrictions image - Picryl description

Possible key metal monopoly committee's study. Washington, D.C., May 8. The temporary National Economic Committee turned its investigation today upon the little known beryllium industry. Senator Joseph O'Mahoney, Co-chairman of the Committee, is shown here with Andrew Gahagan, President of the Beryllium Corp., of Temple, Pennsylvania, examining the crude ore and a sample hammer which is made from an alloy with beryllium. Gahagan described beryllium as an element, fourth in atomic weight from hydrogen, which can be combined with copper or nickel and certain other metals, to produce alloys of extraordinary hardness, lightness, and strength. The committee suspects that the metal may become a key material in industrial and war supply problems

Possible key metal monopoly committee's study. Washington, D.C., May 8...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Production. War housing trailers. The top of a war housing trailer is assembled and finished in the Los Angeles plant of Western Trailer Company. Corners are plastic, rounded sections made of paper especially treated to give it great hardness and durability

Production. War housing trailers. The top of a war housing trailer is ...

Picryl description: Public domain image of an automobile, 1940s car, free to use, no copyright restrictions.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking hardness of valve stem tip by means of Rockwell hardness tester

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Moto...

Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944. More information about the FSA/OWI Collection is availabl... More

Production. Airplane manufacture, general. Testing plane parts for hardness after they come out of the heat treating ovens at the Inglewood, California plant of North American Aviation, Incorporated. These workers in one of the inspection cribs illustrate the company's method of using men and women interchangeably on many jobs. This plant produces the battle-tested B-25 ("Billy Mitchell") bomber, used in General Doolittle's raid on Tokyo, and the P-51 ("Mustang") fighter plane, which was first brought into prominence by the British raid on Dieppe

Production. Airplane manufacture, general. Testing plane parts for har...

Picryl description: Public domain image of the British Empire armed forces, 19th-20th century war and military conflict, free to use, no copyright restrictions.

Production. War housing trailers. Paper replaces steel as material for trailer wheel wells at the Western Trailer Company's plant in Los Angeles. The picture shows the close bond between successive layers of paper smoothed on over a forging mold. The secret of the final hardness and the strength of the material lies in the formula of the solution with which the paper is impregnated. Round corners of the trailer toes, formerly made of metal, are also made by this process

Production. War housing trailers. Paper replaces steel as material for...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Tough steel for a tough job. It takes tough steel to stand up in a Garand rifle. Here workmen are testing the hardness of steel at an eastern armory, a center of war work

Tough steel for a tough job. It takes tough steel to stand up in a Gar...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking hardness of valve stem tip by means of Rockwell hardness tester

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Moto...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Pittsburgh Plate Glass Co., Columbia Chemical Division, Barberton, Ohio. Laboratory, hardness tester

Pittsburgh Plate Glass Co., Columbia Chemical Division, Barberton, Ohi...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Production. Pratt and Whitney airplane engines. Magneto driving gears for Pratt and Whitney airplane motors are tested for hardness on a Rockwell machine in a large Eastern plant producing engines in great numbers for our armed forces. Pratt and Whitney Aircraft

Production. Pratt and Whitney airplane engines. Magneto driving gears ...

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

New York, New York. Class in the use of precision instruments, part of the government-sponsored industrial training program at New York University. Most of the students are women. Testing the hardness of an internal dovetail with a shore scleroscope

New York, New York. Class in the use of precision instruments, part of...

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

Production. Pratt and Whitney airplane engines. A gear for a Pratt and Whitney engine is tested for hardness on a Rockwell machine in a large Eastern plant now producing a steady flow of airplane motors for the planes that will help us bring victory. Pratt and Whitney Aircraft

Production. Pratt and Whitney airplane engines. A gear for a Pratt and...

Public domain photograph of aircraft engine, free to use, no copyright restrictions image - Picryl description

Aluminum casting. The heads of these heat-treated pistons must be spotted prior to Brinnell hardness testing. Young women are employed for this job by a large Midwest aluminum foundry now converted to war production. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. The heads of these heat-treated pistons must be spot...

Picryl description: Public domain image of a woman working, women labor, 1940s, economic conditions, home front, world war two, free to use, no copyright restrictions.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Rockwell hardness tester testing hardness of metal in a bolt

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Moto...

Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944. More information about the FSA/OWI Collection is availabl... More

Government discovers method to preserve film. Scratch resistance, film, particulary the emulsion side, may become damaged through scratching. D. Levinsky of the Bureau is using an instrument which tests the resitance of a film by measuring the width of a scratch produced by a diamond point under a given load. Another method is to put a piece of film in a bottle of sand, revolve the bottle a certain number of times, then measure the haxiness developed. Many commercial treatments designed to increase the hardness of the emulsion have been investigated, 7/8/38

Government discovers method to preserve film. Scratch resistance, film...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Conversion. Copper and brass processing. This sample of brass strip is being tested on a Rockwell Hardness Testing Machine. This test is based upon the depth a steel ball penetrates the metal. A minor load is applied first to hold the ball in position, and then a major load is applied. The dial on the machine measures the depth of the penetration. This test is made to check the physical properties of the metal. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. This sample of brass strip is...

Picryl description: Public domain photograph of an office worker, 1930s, free to use, no copyright restrictions.

Conversion. Soft drink dispenser plant. The vice-president of an Eastern manufacturing company now producing war essentials on prime and subcontracts, tests the hardness of steel in a chamber gauge, essential for the manufacture of small arms ammunition. These gauges are made of special alloys tougher and harder than the toughest and hardest steel. Bristol and Martin Company, New York, New York

Conversion. Soft drink dispenser plant. The vice-president of an Easte...

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

Production. Willow Run bomber plant. Experienced women workers at the Willow Run bomber plant operate such machines as this Rockwell hardness tester (left). Beginners are given such tasks as numbering small machine parts (right). Ford plant, Willow Run

Production. Willow Run bomber plant. Experienced women workers at the ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Rockwell hardness tester testing hardness of metal in a bolt

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Moto...

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