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Scientific American, Vol. 31, No. 10 (1874) (1874)

leaf 7

An illustration from Scientific American, Vol. 31, No. 10 (1874), 1874, leaf 7
irec- rel of the faucet, making it self-grinding and obviating the ings. There was an average of 60 see-saw motions in 24 tion as before, thereby lifting the hooks out of the guide necessity of frequent repair. Finally, by its yielding to ex- hours. This was found to be equal to 012 of a foot… … lock, which may be opened by the knob and locked by a key, but in which only one bolt and one spring are used. In Fig. 1, the bolt, A, is represented as shot forwardso as Patent for sale for the United States. Proposals for pur- acid, and washing the insoluble product obtained until acid to lock…

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