Excerpt from A Treatise on Belts and Pulleys: Embracing Full Explanations of Fundamental Principles; Proper Disposition of Pulleys; Rules, Formulas, and Tables for Determining Widths of Leather and Vulcanized-Rubber Belts and Belts Running Over Covered Pulleys; Strength and Proportions of Pulleys, Dr In the manufacture of modern machinery, which in the great majority of cases embodies a vast deal of careful study and precise calculation, there is probably no one element which enters as largely into the calculations and forms as important a part in the daily operations in the machine-shop as the endless belt for the transmission of power. The lathe, the drill, the planer, the shaping-machine - in short, almost without exception, all machine-tools - are commonly driven from the shop-shaft by means of belts and pulleys; and we can scarcely glance into a shop or factory of any description without encountering a mass of belts which seem at first sight to monopolize every nook in the building and leave little or no room for anything else. Notwithstanding the countless thousands of belts for transmission in use and constantly being replaced in the shops and factories of America; notwithstanding the fact that many thousands of dollars are consumed every year by the rapid wear and destruction of our machine-belts, and the immense field thereby opened for the practical study and application of the principles of economy in this connection - there is no branch of machine-construction which is to-day in as crude and unsatisfactory a state of development as this all-important transmission by belt and pulley. 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.