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conversion

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Conversion. Copper and brass processing. This picture shows brass rod coming from the extrusion machine. Red hot brass billets (solid cylindrical castings) are pushed by tremendous force through a steel die in the extrusion press to form rods of various shapes, or hollow shells that are subsequently made into tubing. The metal is ejected from the extrusion press like tooth paste from a tube. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. This picture shows brass rod ...

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

Conversion. Copper and brass processing. As extruded rod comes from the extrusion machine, it is too hot to handle. It is put under a cold water spray, then sent to the saws to be cut to shorter lengths for further operations. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. As extruded rod comes from th...

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

Conversion. Copper and brass processing. Copper tube is made either by extrusion or piercing. In the piercing method, illustrated here, a hot round billet, or solid piece of copper, about fourty-five inches long, is rotated between tapered rolls and forced against a pointed mandrel which pierces the center of the billet. The billet then emerges in the form of a tube about eleven feet long. The Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Copper tube is made either by...

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

Adding tread rubber stock. When the fabric carcass has been built to the proper number of layers and cushion rubber has been added under the tread, the thick, extra tough tread rubber is added, having been molded to the proper shape by extrusion in a previous operation. Mechanical guides help this builder to put the tread on absolutely straight, so the tire will be in perfect balance. Firestone (General Tires), Akron, Ohio

Adding tread rubber stock. When the fabric carcass has been built to t...

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.

Production. B-25 "Billy Mitchell" bombers. A Negro employee at North American's Inglewood, California, plant, works on extrusion angles for B-25 bombers. In addition to the battle-tested B-25 "Billy Mitchell" bomber, used 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. A Negro employee at North A...

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

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. A mechanical feeder is here shown running billets of brass into an electric furnace, where they will be heated at a high temperature. Then the heated billets will be pushed with tremendous force through the die of an extrusion machine to form rods, tubes, angles or other shapes. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. A mechanical feeder is here s...

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