Publisher's Synopsis
Excerpt from Standard Form of Questions and Answers on the Air Brake, Comprising Both the Westinghouse and New York Systems: For Beginners and Advanced Students; Revised by the Air Brake Association, 1905
A. One whose operative energy is supplied by a mechanical power, such as compressed air, vacuum, hydraulic, spring, chain, friction, or, any other form of mechanical energy. A lever or wheel brake, operated by manual labor, is not considered a power brake. 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.