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Scientific American, Vol. 77, No. 8 (1897) (1897)
leaf 7
while they are in the tunnel the speed of “Sant which occupy grooves in the sides of the car- the cable is six hundred feet per minute. Two CS ae rier, and the carrier is steadied by vertical minutes are required for the passage through strips as it approaches the rails, to insure the the terminals… … slides in a fixed, vertical second shaft is in, the guide. This block has a speed is reduced four times © 1897 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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