January 22, 1853
1 min read
Add Us On GoogleAdd SciAmImproved Railroad Switch
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An improved sslf-acting switch has been invented by James M. Dick, ol Buffalo, N. Y., who has taken measures to secure a patent. It consists, in addition to the usual arrangement -ef two levers projecting upwards a short distance above the rails, which are made to act upon springs, when the car wheels pass over them. The movable rails are, in consequence, drawn or pushed back into the required position, either for communicating with the branch or the direct line, according as may be desired. In case they are in line with either of the branch tracks, and a train is passing along on the direct road in either direction, the movable rails will be brought in line with the rails of the latter, as soon as the wheels depress either of the above-mentioned levers.
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