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Eduard Eberhardt
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13,714. Eberhardt, E. July 3. Metal tubes.-In a press-cylinder for making tubes of lead, a matrix-plate b, with conical holes a, is held apart, by bolts c<1>, from a mandrel-holder e, formed with holes d. Material is forced, by the press-piston, through the holes d and over the edges of the mandrel-holder, and accumulates in the space a, where it is pressed into a compact mass, so that the tubes leaving the nozzles are free from flaws.
GB189913714D1899-07-031899-07-03Improvements in or relating to Presses for Forming Tubes, especially for Making Macaroni.
ExpiredGB189913714A
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