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Bofors forty-millimeter mounts. The machine of bronze rings gears for the production of Bofors forty-millimeter anti-aircraft guns mounts and carriages at a large Midwest rubber factory involves skilled precision operations. Here an expert workman is making the final cut on a vertical turret lathe. When this operation is complete, the bronze ring will be moved to the gear for the concluding operation

Bofors forty-millimeter mounts. The machine of bronze rings gears for ...

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

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton, Russell County, AL

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton...

Unprocessed Field note material exists for this structure: FN-48 Survey number: HABS AL-552 Building/structure dates: ca. 1840 Initial Construction

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton, Russell County, AL

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton...

Unprocessed Field note material exists for this structure: FN-48 Survey number: HABS AL-552 Building/structure dates: ca. 1840 Initial Construction

Whiting-Plover Paper Mill, Building No. 5, 3243 Whiting Road, Whiting, Portage County, WI

Whiting-Plover Paper Mill, Building No. 5, 3243 Whiting Road, Whiting,...

Significance: The Whiting-Plover mill is one of the oldest mills on the Wisconsin River. Survey number: HAER WI-56-E

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicinity, Los Angeles, Los Angeles County, CA

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...

Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O Canal South of U.S. 11, Williamsport, Washington County, MD

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O...

Significance: The Chesapeake & Ohio Canal Lift Bridge is significant as a rare surviving example of a short-span railroad vertical lift bridge, for its unusual design elements to allow unimpeded passage of cana... More

Production. B-25 "Billy Mitchell" bombers. Landing gears for B-25 bombers, completely assembled, are delivered to the final assembly line of North American's Inglewood, California, plant. In addition to the battle-tested B-25 "Billy Mitchell" bomber, in General Doolittle's raid on Tokyo, this plant produces the P-51 "Mustang" fighter plane which was first brought into prominence by the British raid on Dieppe

Production. B-25 "Billy Mitchell" bombers. Landing gears for B-25 bomb...

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

De Land pool. La Roe shop. Mrs. Earl La Roe of Eustis, Florida, a grandmother with two sons in the army, doing her daily shift in the family's garage workshop. She is cutting worm gears needed for the army aircraft equipment made by the De Land, Florida industrial pool

De Land pool. La Roe shop. Mrs. Earl La Roe of Eustis, Florida, a gran...

Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

Picryl description: Public domain image of a rural countryside landscape, farmhouse, farm field, pasture free to use, no copyright restrictions.

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicinity, Los Angeles, Los Angeles County, CA

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...

Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O Canal South of U.S. 11, Williamsport, Washington County, MD

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O...

Significance: The Chesapeake & Ohio Canal Lift Bridge is significant as a rare surviving example of a short-span railroad vertical lift bridge, for its unusual design elements to allow unimpeded passage of cana... More

Putting fly in ointment of "McNutt-for -president" boom. Washington, D.C., April 21. If he continues the pace he is setting to date, Rep. Albert J. Engel, Republican of Michigan, appears certain to throw the "monkey wrench" into the gears of the "McNutt-for-President" boom which got underway during the past winter. Rep. Engel is pictured studying plans he dug up for the two palaces, "Summer" and "Regular" which as high commissioner of the Philippines, McNutt wants built as Commissioner's residences in islands. The proposed palaces are to cost $500,000 and $250,000 respectively. Rep. Engel takes great pride in pointing out that plans for the palaces include 18 lavatories and bathrooms with a seating capacity of 43, 4/21/38

Putting fly in ointment of "McNutt-for -president" boom. Washington, D...

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

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

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

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

Public domain photograph - historical image of South Carolina, United States, free to use, no copyright restrictions image - Picryl description

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicinity, Los Angeles, Los Angeles County, CA

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...

Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O Canal South of U.S. 11, Williamsport, Washington County, MD

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O...

Significance: The Chesapeake & Ohio Canal Lift Bridge is significant as a rare surviving example of a short-span railroad vertical lift bridge, for its unusual design elements to allow unimpeded passage of cana... More

Where it happened. (See photos 3070 to 3074), Sanders Cotton Mfg. Co., Bessemer City, N.C. In this and the adjoining mill (run by the same company) there were still many dangerous, unprotected gears, belts, belts running through the open floor, rough broken flooring on which the workers would likely stumble, etc.- when I went through these mills (October 23rd, 1912) over two months after the accident.  Location: Bessemer City, North Carolina.

Where it happened. (See photos 3070 to 3074), Sanders Cotton Mfg. Co.,...

Picryl description: Public domain photo of an industrial building, factory or warehouse, free to use, no copyright restrictions image.

A New York City watch manufacturer, making clocks for airplanes, is seeking automatic screw machine facilities for the manufacture of twenty-thousand to thirty-thousand small clock gears. Material: high carbon steel, oil hardened. Dimentsions: O.D. .3685 inches; diameter at base of teeth. .3355 inches; Thirty-six teeth, depth, .0165 inches; thickness, .046 inches; diameter center hole, .1 inches

A New York City watch manufacturer, making clocks for airplanes, is se...

Public domain photograph related to New York City, free to use, no copyright restrictions image - Picryl description

Pittsburgh, Pennsylvania (vicinity). Champion no. 1 coal cleaning plant. Oiling the gears of the huge drums that dry the coal after washing

Pittsburgh, Pennsylvania (vicinity). Champion no. 1 coal cleaning plan...

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

Manpower. Southern shipyard workers. A keen eye and a steady hand guide Olie R. Cawethon in hobbing gears for ships of the United Nations. Cawethon, a former diesel engineer, answered the Navy's call for skilled workers, and is today operating a milling machine in a Southern Navy yard

Manpower. Southern shipyard workers. A keen eye and a steady hand guid...

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

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

Public domain photograph - historical image of South Carolina, United States, free to use, no copyright restrictions image - Picryl description

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

Public domain photograph - historical image of South Carolina, United States, free to use, no copyright restrictions image - Picryl description

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton, Russell County, AL

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton...

Unprocessed Field note material exists for this structure: FN-48 Survey number: HABS AL-552 Building/structure dates: ca. 1840 Initial Construction

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton, Russell County, AL

Cotton Gin & Well Sweep, Cliatt Plantation, State Route 165, Cottonton...

Unprocessed Field note material exists for this structure: FN-48 Survey number: HABS AL-552 Building/structure dates: ca. 1840 Initial Construction

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O Canal South of U.S. 11, Williamsport, Washington County, MD

Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O...

Significance: The Chesapeake & Ohio Canal Lift Bridge is significant as a rare surviving example of a short-span railroad vertical lift bridge, for its unusual design elements to allow unimpeded passage of cana... More

Subcontracting (Wilbarger and Sons). Electrically driven transmission gears have speeded up production at the small Wilbarger and Sons Shop, in Harrisonburg, Virginia. Workers at the shop installed the gears and transmission of an old Ford coupe on this machine and the results have been more than gratifying

Subcontracting (Wilbarger and Sons). Electrically driven transmission ...

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.

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

A New Britain-Gridley lathe is worked by an experienced operator at a Midwestern company. The machine which formerly made spur gears, worm wheels and commentator rings has been converted to war use by being tooled with an eccentric spindle and thread rolling attachment for the production of twenty-millimeter shell boosters

A New Britain-Gridley lathe is worked by an experienced operator at a ...

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

Nashville, Tennessee. Working on landing gears for a bomber. Vultee Aircraft Corporation plant

Nashville, Tennessee. Working on landing gears for a bomber. Vultee Ai...

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. From one end of a machine tool plant to another one finds parts of all kinds arranged for assembly into finished products. These are bevel gears

Production. Milling machines and machine castings. From one end of a m...

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

Pittsburgh, Pennsylvania (vicinity). Champion no. 1 coal cleaning plant. Oiling the gears of the huge drums that dry the coal after washing

Pittsburgh, Pennsylvania (vicinity). Champion no. 1 coal cleaning plan...

Public domain photograph of Pennsylvania in 1930s, 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

De Land pool. Bits and parts. Old pumps, gears, chains, parts from every kind of machine under the sun comprise Casey's source of supply in the corner of his De Land, Florida shop. When he needs a new machine, most of the parts come from this junk heap. On a recent contract handled by the De Land pool, he couldn't get steel for a certain die. He found the metal in the gear he is holding, made the die himself, and put it to use for making airplane parts

De Land pool. Bits and parts. Old pumps, gears, chains, parts from eve...

Actual size of negative is C (approximately 4 x 5 inches). Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944... More

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

Public domain photograph - historical image of South Carolina, United States, free to use, no copyright restrictions image - Picryl description

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

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

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksville, Parksville, Mccormick County, SC

Calliham's Mill, SC Route 138 on Stevens Creek, 2 miles east of Parksv...

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

Whiting-Plover Paper Mill, Building No. 5, 3243 Whiting Road, Whiting, Portage County, WI

Whiting-Plover Paper Mill, Building No. 5, 3243 Whiting Road, Whiting,...

Significance: The Whiting-Plover mill is one of the oldest mills on the Wisconsin River. Survey number: HAER WI-56-E

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicinity, Los Angeles, Los Angeles County, CA

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...

Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicinity, Los Angeles, Los Angeles County, CA

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...

Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Fisher-Fallgatter Mill, Waupaca, Waupaca County, WI

Significance: The Fisher-Fallgatter Mill stands as one of the few surviving flour mills in Wisconsin. Less than a century ago, hundreds of flour and gristmills were scattered across the state as settlers found ... More

The old Kenyon's johnnycake flour mill in Usquepaugh is run by water power. The waterwheel is underneath the mill and by means of these two gears its power is brought into the mill

The old Kenyon's johnnycake flour mill in Usquepaugh is run by water p...

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

Production. Diesel engines. Blower gears that will be assembled into diesel engines for the Navy are carefully matched in a Midwest manufacturing plant

Production. Diesel engines. Blower gears that will be assembled into d...

Public domain photograph of the United States military and military-industrial complex before World War Two, 1930s, free to use, no copyright restrictions image - Picryl description

Production. Aircraft engines. Hundreds of gears pass through the expert hands of Dorothy Miller and Sylvia Dreiser during their eight-hour working day in a large Midwest aircraft plant. Inspection of these vital cogs in America's war machine is a delicate task and one which requires infinite patience and precision. Melrose Park, Buick plant

Production. Aircraft engines. Hundreds of gears pass through the exper...

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

The murder of a perfectly good differential - reel 1 - starring Joe Dope While draining the oil one day, the gaze of Joe Dope chanced to stray to a pippin so cute that the love-sic galoot left the oil - and the gears - by the way! Don't be a dope! Handle equipment right / / Cpt. Will Eisner, Ordnance.

The murder of a perfectly good differential - reel 1 - starring Joe Do...

Poster shows Joe Dope destroying a military truck by driving it without oil.

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, VT

Robbins & Lawrence Armory, 196 Main Street, Windsor, Windsor County, V...

Significance: The period of significance for the private Armory is 1846-1856. The factory was constructed in 1846 and was the site of innovation and invention in the manufacture of firearms and machine tools un... More

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicinity, Los Angeles, Los Angeles County, CA

Double-Compound Steam Engine "Sierra Nevada", Seaplane Anchorage vicin...

Significance: A presently rare example of an engine representing, in general, an important stage in steam engineering and, specifically, a form of engine once widely used for ferryboat propulsion. Unprocessed ... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memorial & Arlington National Cemetery, Washington, District of Columbia, DC

Arlington Memorial Bridge, Spanning Potomac River between Lincoln Memo...

Significance: As the final link in the chain of monuments which start at the Capitol building, the Arlington Memorial Bridge connects the Mall in Washington, DC with Arlington National Cemetery in Virginia. De... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price County, WI

Round Lake Logging Dam, Flambeau River, South Fork, Park Falls, Price ...

Significance: The Round Lake Logging Dam is one of the few remaining early artifacts of Wisconsin's logging industry. It was built during the industry's log driving and log booming stages when cut timber was c... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brown County, WI

Main Street Bridge, Spanning Fox River on Main Street, Green Bay, Brow...

Significance: The Main Street Bridge is a double-leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Green Bay. With its symmetrical design including fo... More

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