The Modern bicycle and its accessories; a complete reference book for rider, dealer, and maker (1898)
Schwalbach, Alexander, Wilcox, Julius, Commercial advertiser association, New York · New York, The Commercial advertiser association · leaf 65
asses in goingthrough the die. This mandrel is placedin the tube to keep the shell or gauge fromthickening up, and also to produce a thin-ner gauge when required. Each operationreduces the diameter about an eighth of aninch. It is not possible to reduce the gaugeat the most more than 5-1000 of an… … 44 WORLD AND ADLAKE FORK CROWN. of acid and water. The tubes are thenwashed in clear water; then they are im-mersed in oil, and are ready to be drawnover again. This process is repeated untilsuch time as the tube reaches the desiredgauge and outside diameter. The tubesare then straightened and the…
Bicycles
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