Excerpt from Canadian Electrical News and Steam Engineering Journal, Vol. 3: Old Series, Vol. XV; January 1893 In the accompanying curves are shown the cost of production, and the charge per unit at the compound and simple rate. The ordinates represent pence, and the abscissae the number of hours per annum the supply is used. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Canadian Electrical News and Steam Engineering Journal, Vol. 6: January, 1896 A horse-power in a steam engine or other prime mover is 550 foot lbs. Raised one foot per second, or lbs. One foot per minute. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Canadian Electrical News and Steam Engineering Journal, 1891, Vol. 1 Now let us assume that an error of 50 pounds was made in weighing the water, so that the apparent amount of water evaporated was pounds, instead of pounds, the actual amount. So that the apparent evaporative performance of the boiler is pounds of water per pound of coal, instead of pounds, which is the correct result. The difference introduced by an error of fifty pounds in weighing the water, it will be seen, is only 02. Now let us make-a different supposition. Let us assume that the water was weighed correctly, but that an error of fifty pounds was made in weighing the coal, the apparent weight of coal being pounds. Then so that the ap parent evaporative performance of the boiler is pounds of water per pound of coal, instead of the true result, pounds. The difference in this case is quite appreciable, and the example shows that it makes quite a difference whether a given error is made in weighing the coal or in weighing the water. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Canadian Electrical News and Steam Engineering Journal, Vol. 9: January, 1899 Rope transmission. - In a paper on power transmission by ropes and belts, read before the French Society of Civil Engineers, V. Dubreuil states that one great advantage possessed by ropes is that cyclical variations in the speed of the driving pulley are damped by the ropes, so that the speed of the driving pulley is much more uniform than that of the driver. Ropes are also useful when the two lines of shafting are not peifectly parallel. The velocity of the rope should not be less than about feet per minute, nor more than feet, while with belts a velocity of as little as 600 feet per minute may be used, but the maximum should not exceed feet per minute, above which the centri fugal force prevents the proper adhesion of the belt to the pulley. For great distances between the lines of shafting ropes should be used; though in exceptional cases they may be employed with as little as 12 feet between shaft centres, in general the distance should not be less than 20 feet. Spans of as much as 328 feet have been worked by ropes with only intermediate support. Under no circumstances should the diameter of the smallest pulley be less than 30 times the diameter of the rope, and in general the pulley ratio should not be greater than four to one. Three standard ropes of manila, hemp or cotton may be used. Hemp is much cheaper than cotton, and usually wears longer, but is less pliable. To facilitate estimates, the approximate weight ofa rope pulley may be taken as 5% pounds per groove for each inch of diameter, though single groove pulleys will weigh double this amount. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Canadian Electrical News and Engineering Journal, 1901, Vol. 11 Design and Superintendence of - Electric Railroads, Steam and Hydraulic Plants, Long Distance Power Transmissions, Municipal Electric Lighting Systems, Welding and Electrolytic Processes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
