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Antiaircraft gun carriage. Machining operation on the hold-down clamp for a thirty-seven millimeter antiaircraft gun carriage. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood CIty, Pennsylvania

Antiaircraft gun carriage. Machining operation on the hold-down clamp ...

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

Antiaircraft gun carriage. Axle brackets for a thirty-seven millimeter anti-aircraft gun carriage are machined on this milling machine. Today's fast-moving planes present a target requiring the very best in antiaircraft guns. Carriage and mount are as important as the gun itself for rapid fire power and maneuverability. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City. Pennsylvania

Antiaircraft gun carriage. Axle brackets for a thirty-seven millimeter...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

[Frankford Arsenal, Philadelphia, Pennsylvania.] Bertha Stallworth, age twenty-one, inspecting the end of a forty millimeter artillery cartridge case at the Frankfort [i.e. Frankford] Arsenal

[Frankford Arsenal, Philadelphia, Pennsylvania.] Bertha Stallworth, ag...

Public domain photograph of a woman, female portrait, free to use, no copyright restrictions image - Picryl description

A standard turret lathe being used for boring operations on seventy-five millimeter pack howitzers at the Erie, Pennsylvania, General Electric plant. A set-up for finish reaming the bore and roughing and finishing the powder chamber is shown with seven tubes in the foreground. These howitzers are being produced largely on machinery formerly used for making streetcar motors

A standard turret lathe being used for boring operations on seventy-fi...

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

Antiaircraft gun carriage. The top carriage of a thirty-seven millimeter antiaircraft gun carriage receives the final assembly operations. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood CIty, Pennsylvania

Antiaircraft gun carriage. The top carriage of a thirty-seven millimet...

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.

Antiaircraft gun carriage. Assembling the traversing gear and bearing on a thirty-seven millimeter antiaircraft gun carriage. These precision-built ball bearing installations are vitally important, for on their unfailing smooth operation depends the gunners' ability to follow his swiftly moving target. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. Assembling the traversing gear and bearing ...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Conversion. Safe and lock company. Millimeter guns for America's armed forces are assembled in a factory once devoted to manufacture of safes and locks. York Safe and Lock Company, York, Pennsylvania

Conversion. Safe and lock company. Millimeter guns for America's armed...

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

Antiaircraft gun carriage. Inspection of thirty-seven millimeter anti-aircraft gun carriage parts. With 300-plus-mile-per-hour planes for targets, antiaircraft assembly must be a precision instrument to permit the gunner to keep on his target. Inspection is as rigid as in instrument manufacture. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. Inspection of thirty-seven millimeter anti-...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Antiaircraft gun carriage. The leveling yoke for a thirty-seven millimeter antiaircraft gun carriage is cleaned in this bath before being painted. This yoke puts the gun on an even keel no matter what type of terrain the carriage rests upon. War program production scene in a Pennsylvania heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. The leveling yoke for a thirty-seven millim...

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

Two-and-a-half ton prime mover towing a 105 millimeter howitzer along the Algerian beach. Troop ships can be seen in the background

Two-and-a-half ton prime mover towing a 105 millimeter howitzer along ...

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

Antiaircraft gun carriage. A huge stockpile of equilibrator springs await assembly into the carriage for a thirty-seven millimeter antiaircraft gun. This is a typical scene as heavy industry gets into gear in America's war program. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. A huge stockpile of equilibrator springs aw...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Production. 105 millimeter shells. In a Midwest foundry where plumbing fixtures were formerly processed, hot billets, soon to become shells, are rolled from a butane gas furnace by a water cooled hook. The red-hot billets will next be transferred to hydraulic presses for further processing (Manitowac Shipyards)

Production. 105 millimeter shells. In a Midwest foundry where plumbing...

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

Antiaircraft gun carriage. Thirty-seven millimeter antiaircraft gun carriages come down the assembly line. In the foreground, the frame for the carriage is assembled. War production program scene in a Pennsylvania heavy industry plant now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. Thirty-seven millimeter antiaircraft gun ca...

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

Wadesboro, North Carolina. Jeep on maneuvers crossing rough terrain pulling a thirty-seven millimeter anti-tank gun. Battery D of the Fourty-four Division Anti-tank, Second Corps

Wadesboro, North Carolina. Jeep on maneuvers crossing rough terrain pu...

Public domain photograph of excavation, bulldozer, land management, free to use, no copyright restrictions image - Picryl description

Production. 105 millimeter shells. Plumbing fixtures came off these assembly lines in peace time, but today Giles Knowles and his fellow workers produce 105 millimeter shells in a Midwest plant now converted 100 percent to war production. Knowles, a minor league baseball pitcher, broke a league record for strike-out; now he's out to break the company record for shell production (Manitowac Shipyards)

Production. 105 millimeter shells. Plumbing fixtures came off these as...

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

Cutting thread sectors on a howitzer with a shaper, in the Erie, Pennsylvania, General Electric plant. A dividing head provided with a clamp which fits over the muzzle end of the tube has been adopted for indexing. These seventy-five millimeter pack howitzers are being produced largely on machinery formerly used for making streetcar motors

Cutting thread sectors on a howitzer with a shaper, in the Erie, Penns...

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

Antiaircraft gun carriage.Thirty-seven millimeter anti-aircraft gun carriages on the assembly line. After the frame has been assembled these workers start to assemble the various parts. Bearing ring for the gun mount, outrigger mountings, etc. War Program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage.Thirty-seven millimeter anti-aircraft gun ca...

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

Because of the time and difficulties which would be encountered in buying a new staking machine, engineers of a Midwestern company converted an old standard arbor press into an air-operated machine, pictured above, which stakes screws in a twenty- millimeter shell booster. The results of the air-powered machine were a definite saving of time and elimination of fatigue which resulted from the operation of manually operated press. The young lady operating the machine was an operator of a machine for making loose-leaf notebook binders before she became employed on war work

Because of the time and difficulties which would be encountered in buy...

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

Conversion. Safe and lock company. Millimeter guns for America's armed forces are assembled in a factory once devoted to manufacture of safes and locks. York Safe and Lock Company, York, Pennsylvania

Conversion. Safe and lock company. Millimeter guns for America's armed...

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

Antiaircraft gun carriage. A leveling socket for a thirty-seven millimeter antiaircraft gun carriage is machined in a turret lathe. The leveling assembly permits the gun to be kept on an even keel on all types of terrain. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood CIty, Pennsylvania

Antiaircraft gun carriage. A leveling socket for a thirty-seven millim...

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

A row of seventy-five millimeter pack howitzers being assembled in the Erie, Pennsylvania, General Electric plant while inspectors watch. A total of twenty-three are shown. These howitzers are being produced largely on machinery formerly used for making streetcar motors

A row of seventy-five millimeter pack howitzers being assembled in the...

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

Antiaircraft gun carriage. The traversing bearing is installed on a thirty-seven millimeter antiaircraft gun carriage as it moves down the assembly line. These precision-built ball bearing installations are vitally important, for on their unfailing smooth action depends the gunners' ability to follow his rapidly moving target. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. The traversing bearing is installed on a th...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Bofors forty-millimeter mounts. Gears for guns-for-victory. Hundreds of these precision cut gears roll off specially designed gear-cutters daily in the Bofors plant of a large rubber factory. When assembled, they'll be part of the Bofors forty- millimeter anti-aircraft gun mounts and carriages, some of the war essentials now manufactured in a plant whose sole product used to be tires for the family sedan

Bofors forty-millimeter mounts. Gears for guns-for-victory. Hundreds o...

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

Conversion. Safe and lock company. Millimeter guns for America's armed forces are assembled in a factory once devoted to manufacture of safes and locks. These are breech ring mounts for the guns. York Safe and Lock Company, York, Pennsylvania

Conversion. Safe and lock company. Millimeter guns for America's armed...

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

Production. 105 millimeter shells. One of the many women workers in a Midwest shell plant which formerly made plumbing fixtures, inspects future gifts for the Axis. Her job requires infinite precision and patience, for the inside of every shell must be carefully inspected for flaws which might accidently cause explosions (Manitowac Shipyards)

Production. 105 millimeter shells. One of the many women workers in a ...

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.

[Frankford Arsenal, Philadelphia, Pennsylvania.] Bertha Stallworth, age twenty-one, inspecting the end of a forty millimeter artillery cartridge case at the Frankfort [i.e. Frankford] Arsenal

[Frankford Arsenal, Philadelphia, Pennsylvania.] Bertha Stallworth, ag...

Public domain photograph of a woman, female portrait, free to use, no copyright restrictions image - Picryl description

Wheeler hits sale of guns at peace rally. Washington, D.C., June 8. Condemnation of 'war hysteria' and defense policies was voiced last night by leaders of congressional, labor, student, and women's groups at an antiwar mass meeting. Over 1,100 persons attended. Senator Burton K. Wheeler, Democrat, of Montana, struck at Administration proposals to sell the Allies supplies of rifles, 75 millimeter guns and ammunition 'officially described as obsolete.' He further stated, ' I want to do everything to help the Allies stamp out the brutal forces which seek to dominate Europe and perhaps the rest of the world, but setting the United States on fire will not help cut out the fire in Europe'

Wheeler hits sale of guns at peace rally. Washington, D.C., June 8. Co...

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

African natives prepare for air attack. Guarding against possible enemy attacks in Africa, British troops are training African natives in anti-aircraft units. The instructors, veterans of the Battle of Britain, have found the natives apt students and cool under fire. An African unit is shown loading one of the thirty-seven millimeter ack-ack guns under the supervision of British non-commissioned officers and commissioned officers

African natives prepare for air attack. Guarding against possible enem...

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

As a test, three rounds of primers in empty shell cases are fired in each howitzer to check the breech mechanism. The firing is pictured. These seventy-five millimeter pack howitzers are being manufactured at the Erie, Pennsylvania, General Electric plant, largely on machinery formerly used for making streetcar motors

As a test, three rounds of primers in empty shell cases are fired in e...

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

Antiaircraft gun carriage. Inspection of a thirty-seven millimeter antiaircraft gun carriage parts. With 300-plus-mile-per-hour planes for targets, antiaircraft assembly must be a precision instrument to permit the gunner to keep on his target. Inspection is as rigid as in instrument manufacture. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. Inspection of a thirty-seven millimeter ant...

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

Antiaircraft gun carriage. One of the many machine operations on a partially assembled carriage for a thirty-seven millimeter antiaircraft gun. This is a typical scene as heavy industry gets into gear in America's war program. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood City, Pennsylvania

Antiaircraft gun carriage. One of the many machine operations on a par...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Antiaircraft gun carriage. A casting is machined for the traversing assembly of a thirty-seven millimeter antiaircraft gun carriage. The traversing assembly must be precision-made so that the gunner may follow his swiftly moving target with accuracy. War program production scene in a Pennsylvania heavy industry plant now converted to the production of vitally needed military equipment. AETNA. Ellwood CIty, Pennsylvania

Antiaircraft gun carriage. A casting is machined for the traversing as...

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

Production. 105 millimeter shells. Carefully stacked prior to shipment, thousands of shining shells await shipment to the fighting fronts. These 105 millimeter shells were made in a Midwest plant, where plumbing fixtures were manufactured in peace time (Manitowac Shipyards)

Production. 105 millimeter shells. Carefully stacked prior to shipment...

Picryl description: Public domain image of workers, labor, 1940s, economic conditions, free to use, no copyright restrictions.

Antiaircraft gun carriage. This master machinist lays out the precision parts that go to make up a thirty-seven millimeter anti-aircraft gun carriage. Swift flying planes present a difficult target, the anti-aircraft gun must be a precision instrument. War program production scene in one of Pennsylvania's heavy industry plants now converted to the production of vitally needed military equipment. AETNA. Ellwood CIty, Pennsylvania

Antiaircraft gun carriage. This master machinist lays out the precisi...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Production. 105 millimeter shells. This red-hot billet is undergoing processing in a hydraulic press, where it will be pierced and drawn into the rough shape of an artillery shell. In pre-war days, plumbing fixtures were processed in this Midwest factory (Manitowac Shipyards)

Production. 105 millimeter shells. This red-hot billet is undergoing p...

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