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Scientific American, Vol. 77, No. 5 (July 1897) (1897)

leaf 6

An illustration from Scientific American, Vol. 77, No. 5 (July 1897), 1897, leaf 6
ht framescarrying panes of colored glass, the signal arm swing-ing horizontally and the frames turning inward on op-posite sides of the lantern as the signal is operated. Theshaft carrying the signal arm is weighted to normallyhold the arm horizontally, a position it assumes whenreleased by a… … WOODS RAILROAD CROSSING SIGNAL. may be operated in any suitable manner by an ap-proaching train. A portion of the track may be ar-ranged to be depressed by a moving train, and suchmovement of the track may be made to tilt a bell cranklever, connected through other levers and a slide rodwith the…

Beet · Beets · Bicycle · Sugar · Scientific American · Munn · Low pressure · Fly wheel · Trade mark · Years ago · Beet sugar · Sewing machine · Declination north · Sugar beet · Chino valley

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