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Scientific American, Vol. 96, No. 24 (1907) (1907)

leaf 4

An illustration from Scientific American, Vol. 96, No. 24 (1907), 1907, leaf 4
er. This condenser was then discharged through By coming into contact with the rigid section of the control of railroad operation. a great resistance of distilled water and a glass tube Briefly, the invention may be described as a system apparatus fixed on the track, the lever A is pushed filled… … masses move slowly has, by the falling of from the anode to- the piston valve #H, ward the _ cathode admitted air to the with increasing brake pipe of the his cab with a visual repetition of the signal of the strength of current, and retreat to the cathode with de- train, so that speed is gradually…

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