Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 797
wo feet thick, fifteen feet high, and a little over fifty feet long. These piers rest on a granite pavingB B B, laid on the rock C C of hard mica slate. The openings are covered with granite lintels DDD,about two feet thick, resting on the piers; wells E E being left for the gates F. Above the… … The gates F are made of white-oak timber, one foot thick, laid one above the other, and connectedtogether with four bolts, two inches in diameter, passing through the feet of the castings H, to whichthe screws I are attached, and passing down through the middle of the gate to a cast-iron plate…
Mechanical engineering
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