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Scientific American, Vol. 32, No. 18 (1875) (1875)

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An illustration from Scientific American, Vol. 32, No. 18 (1875), 1875, leaf 0
ent time, they are now offered in either automatic or by hand, as the user may desire. Per- arranged in a vertical position, so that the bolt gate or car- highly perfected form. riage moves in a similar direction. The gate is counter- fectly tapered shingles, of any required thickness at top or… … The Italian observers at Mad- ger, as the bolts are free ex- dapore, in Bengal, to which cept when the saw is passing EVARTS’ ROTARY SHINGLE MACHINE. party the eminent spectrosco- through them. The work pro- pist Tacchini belonged, besides observing all four contacts, No extra fixtures are required…

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