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Scientific American, Vol. 6, No. 25 (1862) (1862)

leaf 7

An illustration from Scientific American, Vol. 6, No. 25 (1862), 1862, leaf 7
ing its end upon a button Samuel D. Cooper, of this city, has invented and | conducted to their respective rooms in the manner of | provided for the purpose. patented an apparatus for an instantaneous alarm to} ordinary bell wires. When the wire reaches its} If a fire occurs in the room, it burns… … es into the teeth of the placed in some room which wheel, G, and this wheel has upon is constantly occupied, and when its shaft a drum around which a a fire occurs not only will it be immediately announced, but its cord, h, is wound; the cord pass- location will be indicated; thus ing also around…

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