The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . red and forty feet long, and twenty-one feet arrangement is shown in the illustration. The diggingof this wheel-pit involved much labor, since it is blastedfrom the solid rock. The ragged sides are protected in themost substantial manner with heavy masonry. It is de-signed for eventual extension to a length of two hundredand sixty feet, and after such extension proves inadequatea second power-house and wheel-pit will be added, v/hichwill use all the present capacity of the can
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . red and forty feet long, and twenty-one feet arrangement is shown in the illustration. The diggingof this wheel-pit involved much labor, since it is blastedfrom the solid rock. The ragged sides are protected in themost substantial manner with heavy masonry. It is de-signed for eventual extension to a length of two hundredand sixty feet, and after such extension proves inadequatea second power-house and wheel-pit will be added, v/hichwill use all the present capacity of the canal. For furtherincrease of power the canal will have to be extended. Thetunnel for the discharge of the water from the wheel-pitis more than a mile and a quarter in length, emptyinginto the river below the Falls. Its horseshoe section willbe observed in Fig. 34, also a hint as to its extreme height is twenty-one feet and the greatestwidth nineteen feet, giving a capacity of three hundredand eighty-six square feet of section. The concrete casing THE CHAINING OF NIAGARA FALLS. 169 Fig. 1. THE FIVE THOUSAND HORSE-POWER DYNAMO. 2. CKOSS-SECTION OF SAME. 3. IN-TERIOR OF POWER-HOUSE AND WHEEL-PIT. is made of one part Portland cement and three parts gravel,A track extends through the conduit, having been laid forthe convenience of the workmen in building. The gradeis very slight, being only a trifle over thirty feet for thewhole distance, but it is calculated that it will deliver over 170 WONDERS OF MODERN MECHANISM. six hundred thousand feet of water per mhiute, a quantitythat will develop somewhat over one hundred thousandhorse-power at the head here obtained. The power-house is an L-shaped structure over thewheel-pit, on the west side of the canal. It is a stonebuilding, with steel frame and roof, the latter having sixtyfeet span. The principal entrance is a large archway thatwill admit a railway-car. To the left of this are theoffices, which are arranged in
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectmechanicalengi
