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Scientific American, Vol. 45, No. 8 (August 1881) (1881)

leaf 7

An illustration from Scientific American, Vol. 45, No. 8 (August 1881), 1881, leaf 7
the toothed another lead plate. These trays, to the number of six, were tive means. then piled one above the other after being filled with dilute ratchet inside the sleeve, and gives means for a leverage cor- The post consists of a piece of flat bar iron, having an acid. The cells, being connected… … parts of the room or inclosure, and to provide a convenient method of shifting such connecting main track from con SCREW DRIVER WITH LEVER ATTACHMENT. HEATON'S IMPROVED FENCE. neetion with one branch to connection with another. consists of a curved piece of round bar iron, bent into An improvement…

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