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Scientific American, Vol. 62, No. 17 (1890) (1890)

leaf 4

An illustration from Scientific American, Vol. 62, No. 17 (1890), 1890, leaf 4
mall view, and acted upon by quickly and easily replaced by a new one. Itisa pa- closing of an electric circuit by pulling on a suspended an exterior thumb piece to disengage it from the rack tented invention of Mr. Nels K. Pearson, of 230 Perry tassel instead of by pressing on a push button, as is… … to ‘‘childish treble,” as in the shrunk shanks for which DEMPF’S CIRCUIT CLOSER. der is slipped into the ‘‘ youthful hose,. well saved, are a world too wide.” the slot, the two No reason can be assigned why the brain should escape block of wood or similar material is employed, and plates are…

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