Collins, John Owen, 1879- · Mount Hope, C. Z., Quartermaster's Department, I.C.C. Press · leaf 92
el trusses covered with steel plate, forming a series of water-tight bulkheads. Each leaf is 65 feet long, 7 feet thick, and they vary in height from 47 feet to 82 feet, according to the position in the locks. The gates are set in two pairs, one pair being guard gates for use in case the other… … POSITION OF MITERING LOCK GATES. of two leaves each. They are opened and closed by a steel Tod attached to the top of each leaf and to the rim of a large wheel mounted on the lock wall. By rotating the wheel through an arc of 190 degrees the gate is opened or closed, just as one would reach out his…
Panama -- Description and travel
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
