Large Water-Gates.

Large Water-Gates.

From a York, Pa., establishment three very large steel water-gates have been manufactured for use as sluice-gates. They will be used as sluice in the Shoshone river big dam, at Wyoming. These gates will control a body of water 310 ft. high, with an enormous pressure behind it, to be used for irrigation purposes. The gates proper, when erected, will weigh about 125 tons in all. They are built of iron, steel, brass and copper, and took several months to construct. When they are put in the dam they will stand perpendicular with the operative force at the top. and the openings through which the water can pass at the option of the operator will be located at the bottom of the gates. There arc two main posts above and four large openings below in each gate. The mechanism will all be operated by electricity. It required four large gondola cars to ship the iron and other work for the dam. which is claimed as the highest in the world. When finished, it will be 315 ft. in height and will be a twin to the Pathfinder dam, in the same section.

LARGE WATER GATES.

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LARGE WATER GATES.

The new water system of Allegheny, Pa., boasts an enormous steel conduit leading from Nine Mile island, ten gates, the largest in the world, manufactured by the Rensselaer Manufacturing Company of Troy, N. Y., who, in order to turn out such work, required new patterns, new core boxes, and everything else necessary for the gigantic undertaking. Each of the ten gates weighs 55,000 pounds, and is tested to stand a pressure of 200 pounds to the square inch. The dimensions of each are as follows: Length, 16 feet; height, 9 feet; width 51-2 feet. The principal material in each is cast iron with mountings of brass,about 200 poundsof which was used in mounting the wearingsurfaces. The valve gates are operated with two solid bronze spindles, on which are cut screws four inches in diameter and heavily geared, so that one or two men can operate them when in use. The accompanying cut shows that a number of heavy ribs cast upon each one of these huge gates gives additional strength to it.

ENORMOUS WATER GATE, ALLEGHENY, PA.