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Tank manufacture (Chrysler). This is the final check, before, this 400 horsepower Wright Whirlwind engine is installed, not in a plane but in one of the army's huge M-3 tanks. The mechanics are employed at the Chrysler tank arsenal, on the outskirts of Detroit, where 10,000 men are engaged in the production of these twenty-eight ton monsters

Tank manufacture (Chrysler). This is the final check, before, this 400...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Soldiers inspecting new trackless tank during demonstration at Fort Myer, Virginia. Tank was manufactured by the Trackless Tank Corporation of New York, and submitted to the Ordnance Department, U.S. Army, for inspection. Preliminary tests indicate that the tank may be adaptable for reconnaissance purposes, possibly replacing scout cars. Tank weighs 10 tons. During initial, brief tests at Fort Knox, Kentucky, it made 45 miles an hour across rough country, with a 37 mm gun and two machine guns mounted in its turret; its designer says it can travel 85 mph on level ground. It is powered by a 250 horsepower diesel engine, and carries 1/2-inch armor. Tentative plans of the Army call for a redesign of the superstructure for better arming of the tank

Soldiers inspecting new trackless tank during demonstration at Fort My...

Picryl description: Public domain photograph of armor, free to use, no copyright restrictions image.

Production. B-17F heavy bombers. The brute force of a mighty plane engine, over a thousand horsepower, will strain at the bolt holes drilled by this girl worker in an engine bulkhead for a wing spar of a B-17F heavy bomber. She works in the Long Beach, California, plant of Douglas Aircraft Company. Better known as the "Flying Fortress," the B-17F is a later model of the B-17, which distinguished itself in action in the South Pacific, over Germany and elsewhere. It is a long range, high altitude, heavy bomber with a crew of seven to nine men and with armament sufficient to defend itself on daylight missions

Production. B-17F heavy bombers. The brute force of a mighty plane eng...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Builds own Jalopy. Washington, D.C., Feb. 2. Thirty dollars was all it cost Robert Preston, 16-year-old high school senior, to build this midget automobile. Weighing approximately 250 pounds, the 'jalopy' is powered with a washing machine motor of 3-4 horsepower and has a maximum speed of 20 miles an hour. His license tags for this year will cost 32 cents, 2-2-39

Builds own Jalopy. Washington, D.C., Feb. 2. Thirty dollars was all it...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Production. B-25 bombers. Making wiring assemblies at a junction box on the fire wall for the right engine of a B-25 bomber. Forward of this wall will be mounted one of the two 1700 horsepower Wright Whirlwind engines which carry the B-25 through brilliant performances up to altitudes of 25,000 feet. Fairfax bomber plant, Kansas City

Production. B-25 bombers. Making wiring assemblies at a junction box o...

Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.

New Coast Guard boat capable of 35 miles an hour. Washington, D.C., May 17. One of the fastest things afloat, the new U.S. Coast Guard patrol boat #441 was put thru its paces on the Potomac River today for the benefit of treasure officials. The cruiser, which is one of eight to placed in law enforcement and life-saving service of the Coast Guard, is powered with four 1600 horsepower motors and is capable of doing 35 miles an hour, 5/17/1937

New Coast Guard boat capable of 35 miles an hour. Washington, D.C., Ma...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Horsepower threshing, Buffalo County, Nebraska.

Horsepower threshing, Buffalo County, Nebraska.

original size: 6x8 Public domain photograph - historical image of Nebraska, United States, free to use, no copyright restrictions image - Picryl description

Aircraft. Naval. The Brewster "Buccaneer" (SB2A-1) is used by the Navy as scout dive bomber and escort plane. It is powered by a single-row Wright cyclone engine of 1,650 horsepower, has a top speed of about 350 miles per hour, a range of about 1,000 miles and a load capacity up to 11,000 pounds

Aircraft. Naval. The Brewster "Buccaneer" (SB2A-1) is used by the Navy...

Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.

Food in England. Members of the Royal Air Force, stationed in Southern England, use horsepower to plow the land of the farm they operate which produces most of the food requirements of their station

Food in England. Members of the Royal Air Force, stationed in Southern...

Picryl description: Public domain photograph of workers, war production, aircraft, airfield, the 1930s -1940s, free to use, no copyright restrictions.

Aircraft. Naval. The Vought-Sikorsky "Corsair" (F4U-1) Navy fighter, is one of the fastest warplanes in existence. Powered by a 2,000 horsepower Pratt and Whitney engine, it has a cruising speed in excess of 425 miles per hour. Its top speed is a military secret. Designed to protect the Navy's big bombers, the Corsair may be based on an aircraft carrier

Aircraft. Naval. The Vought-Sikorsky "Corsair" (F4U-1) Navy fighter, i...

Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.

Production. Milling machines and machine castings. Many minds, many heads, many skills went into the construction of this large, hydraulically-operated milling machine. The slender shaft just below the figure "100" in the upper right is a tracer finger, so called because it feels its way gently around the edge of a pattern so that the cutters reproduce the pattern exactly in tough steel. This tracer, so sensitive that it can be deflected with the edge of a piece of cardboard, controls the movement of tons of machinery exerting fifteen or twenty horsepower of cutting force

Production. Milling machines and machine castings. Many minds, many he...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Warner Robins, Georgia. Air Service Command, Robins Field. Men of the engine squadron of an air depot group disassembling and cleaning 2000 horsepower Pratt and Whitney engines

Warner Robins, Georgia. Air Service Command, Robins Field. Men of the ...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Chrysler tank arsenal. Installing the power plant is a ticklish operation. These workers are lowering a 400 horsepower Wright Whirlwind aviation engine into an M-3 tank and they are taking care to insure that each fitting and connection may be made within a few seconds after the motor has been placed in the tank. These twenty-eight ton giants

Chrysler tank arsenal. Installing the power plant is a ticklish operat...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Aircraft. Naval. The Navy's "Coronado" (PB2Y-2) was designed by Consolidated for long-range patrol and transport missions. It is an all-metal, high-wing flying boat powered by four Pratt and Whitney engines of 1,200 horsepower each. Its speed is over 200 miles per hour, its range over 3,000 miles, its service ceiling approximately 20,000 feet, its load capacity 30,000 pounds. It carries a crew of ten men armed with 50-caliber machine guns and bombs

Aircraft. Naval. The Navy's "Coronado" (PB2Y-2) was designed by Consol...

Public domain aerial photograph, no copyright restrictions image - Picryl description Public domain photograph related to US navy, free to use, no copyright restrictions image - Picryl description

Aircraft, naval. The Brewster "Buffalo" (F2A-1) Navy fighter is a favorite with many American Air Force and Royal Air Force pilots. This plane, which is usually based on a carrier, is exceedingly maneuverable and capable of excellent performance at high altitudes. Powered by a 1,000 horsepower Wright cyclone engine it has a top speed of about 330 miles per hour, a range of 1,000 miles and a ceiling of approximately 35,000 feet

Aircraft, naval. The Brewster "Buffalo" (F2A-1) Navy fighter is a favo...

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

Horsepower threshing, Buffalo County, Nebraska.

Horsepower threshing, Buffalo County, Nebraska.

original size: 6x8 Public domain photograph - historical image of Nebraska, United States, free to use, no copyright restrictions image - Picryl description

Flexible performance of C-47 transport planes is due in part to their two 1,200 horsepower radial engines and to their three-blade variable-pitch propellers, Long Beach, Calif. Picture taken at the Douglas Aircraft Company. The versatile C-47 performs many important tasks for the army. It ferries men and cargo across oceans and mountains, tows gliders and brings paratroopers and their equipment to scenes of action

Flexible performance of C-47 transport planes is due in part to their ...

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

Tank manufacture (Chrysler). The carburator is installed before this 400 horsepower Wright Whirlwind engine is placed in one of the Army's huge M-3 tanks. This mechanic is employed at the Chrysler tank arsenal, on the outskirts of Detroit, where these twenty-eight ton tanks are being made

Tank manufacture (Chrysler). The carburator is installed before this 4...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

60 horsepower caterpillar engine combine harvester used in Deschutes Valley, central Oregon, on the line of the Oregon trunk.

60 horsepower caterpillar engine combine harvester used in Deschutes V...

J172675 U.S. Copyright Office Photo copyrighted by O. Hedlund. This record contains unverified, old data from caption card. Caption card tracings: Ph. Ind.; Farms...Harvest; Farm Machinery; Geogr.

Tank manufacture (Chrysler). M-3s, the twenty-eight ton "medium" tanks being turned out in Detroit at the Chrysler tank arsenal, are powered by nine cylinder, 400 horsepower Wright Whirlwind aviation type engines. These men are working on the engine wiring sub-assembly

Tank manufacture (Chrysler). M-3s, the twenty-eight ton "medium" tanks...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Chrysler tank arsenal. Workers in the huge tank Chrysler arsenal near Detroit, putting the tracks on one of the giant M-3 tanks. These rolling arsenals weigh twenty-eight tons, are capable of speeds over twenty-five miles an hour and are equipped with 75 mm. field artillery gun and a 37 mm. anti-aircraft gun, as well as four mounted machine guns and various unmounted arms its crew may carry. The tanks are powered by 400 horsepower Wright Whirlwind aviation engines

Chrysler tank arsenal. Workers in the huge tank Chrysler arsenal near ...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Chrysler tank arsenal. Workers in the huge tank Chrysler arsenal near Detroit, putting the tracks on one of the giant M-3 tanks. These rolling arsenals weigh twenty-eight tons, are capable of speeds over twenty-five miles an hour and are equipped with 75 mm. field artillery gun and a 37 mm. anti-aircraft gun, as well as four mounted machine guns and various unmounted arms its crew may carry. The tanks are powered by 400 horsepower Wright Whirlwind aviation engines

Chrysler tank arsenal. Workers in the huge tank Chrysler arsenal near ...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Bar Harbor, Maine. Civil Air Patrol base headquarters of coastal patrol no. 20. Low horsepower plane, used only for courier duty, being steadied in a strong wind by two ground crew men

Bar Harbor, Maine. Civil Air Patrol base headquarters of coastal patro...

Picryl description: Public domain photograph of migrant workers, 1930s car, Great Depression, Dust Bowl refugees, poverty, economic conditions, free to use, no copyright restrictions.

Production. Milling machines and machine castings. Motors, too. Every modern machine tool has at least one motor; most have two; some have nearly a dozen. They range from small fractional horsepower fan motors to twenty horsepower giants, sometimes joined to provide as much as 120 horsepower in a single machine

Production. Milling machines and machine castings. Motors, too. Every ...

Picryl description: Public domain photograph of costume accessory, free to use, no copyright restrictions image.

Probably the smallest plane in the world. Built by Edw. F. Allen of Wash, D.C., who was formerly test pilot for Army Air Service during the world war. Plane is equipped with 9 horsepower motorcycle engine and weighs only 205 lbs. with wing spread of 27 ft. Mr. Allen, in cockpit, flies it often and recently attained height of 1800 ft. capable of making 63 mph

Probably the smallest plane in the world. Built by Edw. F. Allen of Wa...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Tank manufacture (Chrysler). M-3s, the twenty-eight ton "medium" tanks being turned out in Detroit at the Chrysler tank arsenal, are powered by nine cylinder, 400 horsepower Wright Whirlwind aviation type engines. This is a general view of the final engine assembly department

Tank manufacture (Chrysler). M-3s, the twenty-eight ton "medium" tanks...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Production. Airplane maufacture, general. This line of warplane engines at the Long Beach, California, Douglas Aircraft Company, represents enough horsepower to drive an ocean liner. Most important of the many types of aircraft made at this plant are the B-17F ("Flying Fortress") heavy bomber, the A-20 ("Havoc") assault bomber and the C-47 heavy transport plane for the carrying of troops and cargo

Production. Airplane maufacture, general. This line of warplane engine...

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

Aircraft. Naval. The Navy's "Coronado" (PB2Y-2) was designed by Consolidated for long-range patrol and transport missions. It is an all-metal, high-wing flying boat powered by four Pratt and Whitney engines of 1,200 horsepower each. Its speed is over 200 miles per hour, its range over 3,000 miles, its service ceiling approximately 20,000 feet, its load capacity 30,000 pounds. It carries a crew of ten men armed with 50-caliber machine guns and bombs

Aircraft. Naval. The Navy's "Coronado" (PB2Y-2) was designed by Consol...

Picryl description: Public domain photograph of a ship, docks, navy, free to use, no copyright restrictions.