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Conversion. Copper and brass processing. This is an inverted bull clock, a modern piece of equipment in a brass and copper mill for drawing large diameter wire. As the wire leaves the machine, it is automatically coiled for easy handling. Most frequently it is redrawn to smaller diameters, though there are many uses for heavy wire, too. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. This is an inverted bull cloc...

Public domain photograph of manufacturing, industry, free to use, no copyright restrictions image - Picryl description

Giant wheels ten feet in diameter, once used for carrying logs to sawmill, Michigan

Giant wheels ten feet in diameter, once used for carrying logs to sawm...

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

Conversion. Copper and brass processing. The inside of a large brass and copper tube mill. Copper tubes are made in many sizes, and in many alloys, and are needed for war production in hundreds of different ways--from small diameter tubing for gas and oil lines in airplanes and tanks and motor cars to large diameter tubes used in construction of our battleships. A tube annealing furnace may be seen to the right. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. The inside of a large brass a...

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.

Tanganyika. Ngorongoro Crater. Looking across the crater. Twelve miles diameter

Tanganyika. Ngorongoro Crater. Looking across the crater. Twelve miles...

Public domain photograph of National Park, nature, free to use, no copyright restrictions image - Picryl description

Aluminum casting. This special gauge checks diameter of the piston skirt. Made of aluminum, this piston will be used in army jeeps, and is one of the products of a large Midwest factory now converted to manufacture of war essentials. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. This special gauge checks diameter of the piston ski...

Picryl description: Public domain photograph of a farmer, 1930s, 20th-century great depression era, free to use, no copyright restrictions.

Women in industry. Tool production. Testing small diameter, high-speed twist drills, this young woman employed by a Midwest drill and tool company is one of America's women "behind the men behind the guns." Drills must be perfectly made so that the nation's war weapons can be built to accurate specifications. Republic Drill and Tool Company, Chicago, Illinois

Women in industry. Tool production. Testing small diameter, high-spee...

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.

Siphon--the world's longest--which carries water five miles to Dead Ox Flat. It is eight feet in diameter. Malheur County, Oregon

Siphon--the world's longest--which carries water five miles to Dead Ox...

Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description

Women in industry. Tool production. Testing small diameter, high-speed twist drills, these women employed by a Midwest drill and tool company roll the drills down a slight incline to determine regularity of diameter. It's a job requiring patience and finger dexterity, and these young women possess those definite feminine propensities for just such work. Republic Drill and Tool Company, Chicago, Illinois

Women in industry. Tool production. Testing small diameter, high-spee...

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.

Conversion. Copper and brass processing. Here is a stock of billets, or solid cylindrical brass or copper castings, which have been sawed to length. These billets will be heated and put through a powerful extrusion machine, which will extrude rods, tubes or other special shapes from them. Billets are cast six inches to eight inches in diameter and usually from four to ten feet long. These are sawed to shorter lengths before they go to the extrusion machines. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. Here is a stock of billets, o...

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.

Conversion. Copper and brass processing. Stocks of partially completed lengths of seamless copper tube in many sizes. These have still to go through several more draws through dies on drawbenches. Each draw reduces them in diameter and wall thickness, and lengthens them out. Then, before the tubes leaves the mill, the ends will be sawed off straight and clean. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Stocks of partially completed...

Picryl description: Public domain photograph of lumber, lumberjack workers, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Conversion. Copper and brass processing. Gaging copper rotating bands. These bands are sawed from long copper tubes, machined to size, serrated and applied like a collar to projectiles. These copper rotating bands fit the serrations inside gun barrels, and make the projectile rotate as it is shot from the gun. The man in this picture is checking the diameter of the bands as they come from the saws, before they are machined. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Gaging copper rotating bands....

Picryl description: Public domain photograph of worker, marketplace, vendor, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Conversion. Copper and brass processing. Drawing seamless copper tube. Rough cast tubes tapered at one end to fit through a die are gripped in the tongs of the electric motor-driven vehicle on the drawbench and pulled or "drawn" through the die to be reduced to the desired size. Tubes usually are redrawn many times; each successive "draw" reduces the diameter, and increases the length. Brass tubes need to be annealed or softened between each draw, but copper tubes can be drawn several times without intermediate annealing. The tapered nose of the tubes may be seen just behind the drawbench operator. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Drawing seamless copper tube....

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

Giant wheels ten feet in diameter, once used for carrying logs to sawmill, Michigan

Giant wheels ten feet in diameter, once used for carrying logs to sawm...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Conversion. Copper and brass processing. The inside of a large brass and copper tube mill. Copper tubes are made in many sizes, and in many alloys, and are needed for war production in hundreds of different ways--from small diameter tubing for gas and oil lines in airplanes and tanks and motor cars to large diameter tubes used in construction of our battleships. A tube annealing furnace may be seen to the right. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. The inside of a large brass a...

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.

Conversion. Copper and brass processing. Drawing seamless copper tube. Rough cast tubes tapered at one end to fit through a die are gripped in the tongs of the electric motor-driven vehicle on the drawbench and pulled or "drawn" through the die to reduce them to the desired size. Tubes usually are redrawn many times; each successive "draw" reduces the diameter, and increases the length. Brass tubes need to be annealed or softened between each draw, but copper tubes can be drawn several times without intermediate annealing. The tapered nose of the tubes may be seen just behind the drawbench operator. The tube is checked with a micrometer after being drawn, to make sure it is the right diameter. The man looking through the short section of tube is inspecting the inner surface for flaws. The Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Drawing seamless copper tube....

Public domain photograph of car garage, repair shop, 20th century, free to use, no copyright restrictions image - Picryl description