Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 449
tfjy i/73lA//u. jfOOiJ … — ?> :^: ENGINEERING DRAWING. 433 u _! The pneumatic caisson has superseded the pneumatic pile. The system ofair-lock is the same, but, instead of sinking several piles and then combiningthem with a structure, the caisson em-braces the whole pier and starts fromthe bottom. The pneumatic…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
