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Scientific American, Vol. 20, No. 11 (1869) (1869)

leaf 3

An illustration from Scientific American, Vol. 20, No. 11 (1869), 1869, leaf 3
h either of the branch lines by means of an ee a This, operation is easily performed by taking hold of the ordinary switch, to which it is connected by the trans- A Good Example. paper at the two opposite corners with the thumbs and fore- fingers, catching the paper inside of the gummed edges, the… … very fast. The connecting switch bar can be placed either above or under the sleepers as a library of a thousand volumes of reference and miscellan- is that of the ordinary switch. eous books, and have fitted up a hitherto vacant apartment in Patent pending through the Scientific American Patent…

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