FEBRUARY 4, 1899. ] 69 THE HOADLEY-KNIGHT COMPRESSED AIR MOTOR. In our last issue we gave some account of the devel- opment of compressed air traction on the streets of New York city, and drew attention to the fact that experi- mental and prac- a pressure of be. tical work in this tween 225 and 300 … | pressure cylinder Street Railway a spray of hot * water is thrown the other, built into the now heat- under the Hoad- ed air, in which ley - Knight pat- it is immediately ents, having shown good results in operating several converted into vapor. The combined steam and com- ears on the Lenox…
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