Public domain
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-pow
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Credit lineBecause 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, p. 1942-01-01. United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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