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The Colliery Manager's Handbook; A Comprehensive Treatise on the Laying-Out and Working of Collieries Designed as a Book of Reference for Colliery Man ebook
The Colliery Manager's Handbook; A Comprehensive Treatise on the Laying-Out and Working of Collieries Designed as a Book of Reference for Colliery Man ebook

The Colliery Manager's Handbook; A Comprehensive Treatise on the Laying-Out and Working of Collieries Designed as a Book of Reference for Colliery Man by Caleb Pamely

The Colliery Manager's Handbook; A Comprehensive Treatise on the Laying-Out and Working of Collieries Designed as a Book of Reference for Colliery Man
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Author: Caleb Pamely
Page Count: 318 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781235893575
File size: 23 Mb
Download Link: The Colliery Manager's Handbook; A Comprehensive Treatise on the Laying-Out and Working of Collieries Designed as a Book of Reference for Colliery Man
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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. 1891 Excerpt: ...belting, the engine having a broad fly-wheel for the belt, and another, of small diameter, fixed on the fan shaft. This arrangement is necessary to obtain a proper velocity of fan, with an economical speed of the engine, and, moreover, prevents the shocks of the fan being communicated to the engine, thus resulting in much less wear and tear in the engine. In the report referred to in connection with the other ventilators, the Schiele is said to give 49/27 per cent, of useful effect at Car House Colliery, Rotherham. The Capell fan, as made by the Bowling Iron Co., Limited, Bradford, Yorkshire, is shown at Fig. 342, and is thus described by them: --The fan is the smallest in the market, and is particularly adapted for moving large volumes of air, where a high water-gauge is required, gauges now being obtained by the Capell fan which some time ago were thought to be impracticable. The highest gauge which has been obtained with the Capell fan is 10 inches. The fans are made either with single or double inlets, to allow the air to pass in on one or both sides, according to the requirements of the mine. It consists of an inner cylinder, in which port-holes are cut, and to this cylinder wings are attached on both sides, those on the outer side being continued to the periphery of the fan, and the whole revolving on one shaft. The air enters into the cylinder, and escapes through the port-holes into the outer wings, and is carried by them until it is discharged into the tvasie outlet. The internal cylinder causes no artificial contraction, the sum of the port-hole area being always greater than that of the actual inlet; on the other hand, it appears that the absolute velocity of the air during its passage through the outer wings or chambers remains all but unaltered...

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