Excerpt from Air Compressors and Blowing Engines: Specially Adapted for Engineers The following work deals with the construction of Blowing Engines and Air Compressors, and is reprinted from a series of articles which originally appeared in The Practical Engineer. The first chapter discusses the properties of air, and shows how to calculate the work required for compression under various circumstances. The second describes several experiments with compressors, and explains the methods of calculating the various efficiencies. The third deals with the theory of valves for equalisation of pressure, and the fourth is devoted to the construction of Blowing Engines. Chapter V. Com menees the description of Air Compressors. These have self-acting valves, and the remainder of the book is devoted to those with mechanically controlled valves. 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.