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Congressional Serial Set Volume 1636 (Paperback) Loot Price: R1,377 Discovery Miles 13 770
Congressional Serial Set Volume 1636 (Paperback): United States Government Office
Congressional Serial Set Volume 1636 (Paperback): United States Government Office

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Congressional Serial Set Volume 1636 (Paperback)

United States Government Office

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Loot Price R1,377 Discovery Miles 13 770

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1875 Excerpt: ...will not, answer. The new apparatus appears to have the additional advantage of serving as a regulator, as it will lower itself little by little as the discharge of the river increases. The following is the description given by M. Carro in a pamphlet published in 1870: "The apparatus which we propose, (Plate 13, Figs. 71, 72, 73, ) when reduced to its simplest form, comprises two gates, which are connected ou top by hinges, and rest on woodeu axles terminated by journals provided with rollers. The gates roll upon rails placed parallel to the thread of the stream. "Links fastened to the lower gate, below the middle, are also fastened by a second articulation to fixed points distributed along a right line parallel to the erest of the dam, and at right angles to the current. A depression or chamber, from 1 foot H inches to 2 feet in depth, is prepared under the gates. "When the latter are raised so as to form a dam they have the appearance of.an isosceles triangle, (Fig. 71, ) whose apex is the crest of the weir. In order to remove the obstacle which they present to the current they ant made to slide, or rather to roll hi opposite directions, until they lie down Hat on the sole, and only make, as it were, a flooring to cover it. The t wo gates may therefore be considered as a single one, jointed at a fracture in the middle, which works under the pressure of the water when the dam its maneuvered. "If we consider the gates in the position last examined, aud suppose that by a special arrangement of valves, of which we will speak further on, we put the chamber which they cover in communication with the upper pool, the water introduced will exercise, by virtue of the difference of level above aud below the dam, an under pressure represented by thi...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: March 2012
First published: March 2012
Authors: United States Government Office
Dimensions: 246 x 189 x 28mm (L x W x T)
Format: Paperback - Trade
Pages: 548
ISBN-13: 978-1-130-82545-9
Barcode: 9781130825459
Categories: Books
LSN: 1-130-82545-0

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