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Scientific American, Vol. 90, No. 22 (1904) (1904)
leaf 4
ection. This is al- In order to prevent displacement ways done around a point situated of the paper, the apparatus is com- beneath the marking wheel as a pleted by the arrangement U T A’ V, center. The paper immediately con- which serves at the same time to tinues its motion backward as be- turn… … fork. This arrange- veniences inherent in © 1904 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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