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Scientific American, Vol. 24, No. 13 (1871) (1871)

leaf 4

An illustration from Scientific American, Vol. 24, No. 13 (1871), 1871, leaf 4
nding and thing is not held firmly in its place. Turning Plunger for Cylindrical Ring. descending stairways. It consists of hinged steps, having These requisites are undoubtedly secured in the wheel Messrs. Epitors :—I herewith enclose drawings. of a tool, under consideration, which has been used… … attachment being shown in the annexed engraving. tained from the pipes during the continuance of the frost; vi lll TTT OS and when the thaw comes, the trifling cost of the renewal of ARCHIBALD’S IMPROVED SPOKED WHEEL, the glass tube again effectually guards against the enemy. pipe, or cast iron. It…

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