Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 136
uals cut off fromthe atmosphere, as in the case of men engaged in submarine DIVING BELLS AND DIVING SUITS 125 work. The divingbells and pneumaticcaissons used inlaying the founda-tions of bridges,piers, etc., are sim-ply vessels of var-ious shapes andsizes, open at thebottom, from whichthe water is… … FiQ. 155.—Section of a Pneumatic Caisson. The sides of thecaisson are extended upward and are atronijly braced to keepback the water. Masonry or concrete, C, I), placed on top ofthe caisson, press it down upon the bottom, while compressedair, forced through a pipe P, drives the water out of…
Physics
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