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Scientific American, Vol. 73, No. 2 (1895) (1895)

leaf 7

An illustration from Scientific American, Vol. 73, No. 2 (1895), 1895, leaf 7
vigation Company. Here, where the workmen are This is a device for keeping the pneumatic tire of a purchased by Henry Patterson, of Humboldt, Kan., 2,000 in number, only an exceptionally small number wheel inflated to the desired degree, the device being who at unce sent a description of them to… … PORTABLE ELECTRIC DRILL. 8 inches long, circumference 33 inches, and two triangular shaped bones 344 by 12 feet, the use of which is conjectural, shop is provided with a number of special drilling ma- but supposed to be propellers or fins.” chines and the necessary cables, so that any man who…

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