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Scientific American, Vol. 23, No. 17 (1870) (1870)

leaf 4

An illustration from Scientific American, Vol. 23, No. 17 (1870), 1870, leaf 4
ess all its valuable sufficient guaranty of the purity of the water. The surface locked, qualities, and at the same time be free from liability to corro- The hasp is locked by simply pressing it down to the posi- sion, and consequent obstruction. The appearance of this tion shown in Fig.1. The… … formation of the deposit. This must be ap- parts are very strong and easily made in narent to all intelligent observers, for it is at quantity by machinery. ADAMS’ IMPROVED PADLOCK. the expense of the iron that the incrustation This padlock was patented, April 12, arises. These facts are but too…

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