London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 242
0 L 1 ] , - J L 1- ±._^J. J L 10 I ^5 applied lo Canal and Dock Gates, <^c. 2-29 IS^il^i, … Q 8 230 Improved Methods of constructing Valves or Sluices, where it is in the line of the top rail of the gate, to which theworm-shaft bearings are secured. To work well, this arrangement will require good workman-ship in every respect; but, with the best possible execution, itwill be admitted to…
Architecture
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