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Scientific American, Vol. 67, No. 23 (1892) (1892)

leaf 3

An illustration from Scientific American, Vol. 67, No. 23 (1892), 1892, leaf 3
is, according to Liesegang, An efficient and durable non-combustible door, it gives to silk. an excellent solvent of para-amidophenol — ninety- adapted to close tightly an elevator opening, and with INFLATION OF RUBBER BALLS. mechanism for closing the several doors in a building seven grammes of… … total length of the train was 1,602 feet, and it carried KIBELE’S HATCH DOOR. der pressure into the ball. Then, when the ball is judged to be sufficiently inflated, the cock is closed; but, if the entire contents of the bottle are insufficient, subject of a patent issued to Mr. Cuno Kibele, of…

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