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Scientific American, Vol. 47, No. 2 (1882) (1882)
leaf 14
S. & FOREIGN PATENTS PER MINUTE CAPACITY THE THE DUPLEX INJECTOR. W ATCHMAKERS. L B. DAVIS PATENT, May, 1879. The constantly increasing demand for this Boiler : Before buying lathes. see the ‘Whitcomb,’ made by $88 A week to Agents. $10 OUTFIT FREE. Feeder proves its superiority over other machines… … © 1882 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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