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A Record of the Progress of Modern Engineering Volume N . 3 (Paperback) Loot Price: R456 Discovery Miles 4 560
A Record of the Progress of Modern Engineering Volume N . 3 (Paperback): William Humber
A Record of the Progress of Modern Engineering Volume N . 3 (Paperback): William Humber

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A Record of the Progress of Modern Engineering Volume N . 3 (Paperback)

William Humber

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Loot Price R456 Discovery Miles 4 560

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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. 1866 Excerpt: ... for each third class passenger, 4 for each second class, and 7h for each first class; and this is the consideration which should govern the proportioning of fares. Comparing this with the American carriages, we find that in a length of 180 feet of train 180 passengers are carried, all one class; while in the carriages above described, 308 passengers are carried in a train length of 162 feet. And while the Americans number 30 per doorway for exit and entrance, this improved system gives 12, 10, and 8 per doorway--a manifest advantage in rapid passenger traffic. Assuming the ten-wheel engine before described to be capable of taking a load of 650 tons up an incline of 1 in 100, this system would facilitate the transport of 5,000 passengers in a single train--a very important question to consider when the conveyance of troops, whether volunteers or regulars, is concerned; and a very important consideration for railways where the traffic might be doubled but the trains are too frequent. In the construction of trains a very important element is the friction of axle bearings, and the minimum of friction is obtained by the use of good lubricating oil instead of viscid soap. The use of the latter originally obtained as a compensation for inferior mechanical structure. The viscid material enabled axles to be used of smaller bearing surface than could be used with oil, which can only maintain a cushion with ample surface. As axles are usually constructed, the bearing brass is held between two raised collars of the axle. This is a disadvantage to begin with, as it is the tendency of the lubricating fluid to ascend to the largest diameter, just as the strap of a machine works to the highest point on a drum wheel. And thus the grease or oil in a railway bearing works ou...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: William Humber
Dimensions: 246 x 189 x 3mm (L x W x T)
Format: Paperback - Trade
Pages: 54
ISBN-13: 978-1-231-17993-2
Barcode: 9781231179932
Categories: Books
LSN: 1-231-17993-7

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