Excerpt from Twentieth Century Triple Air Brake Questions and Answers The contents of this book are founded by years of actual experience and should be thoroughly under stood bv everyone operating or that is interested therein. It is not the intention of the writer to pro duce anything that will puzzle the reader, but has shortened the questions and answers in the most simple language, asking and answering questions of three automatic air brake systems. The work is intended principally for those in the operating department or others who may take an interest in the information herein noted. As the air brake appliance has proven to be one of the most essential features in railway service, it is the duty of every one in that class of service to be thoroughly acquainted with the same. 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.