working parts of this lock are contained in a circular dissolved in hot rain water, and the metal rubbed with it here, but for a suggestion recently made in the British Medi- case, but they may be attached to a lock or case of any other immediately untilit acquires a fine dark green color; it is… … central plate, D, and through RUPPEL’S PATENT LOCK. a@ similar aperture in the base piate, A, when a quarter turn of the movable part, Fig. 2, it acquires a fine brown color after ten to twelve repetitions the suggestion of the journal we mention is, that liquid pro- brings the head of the bolt, C,…
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-559-368.webp)
