Railway Mechanical Engineer, Vol. 96

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Excerpt from Railway Mechanical Engineer, Vol. 96: January December, 1922 One of the best checks, and one which should be applied at regular intervals, is to pump up the air to full pressure with all air tools or machines shut down, and then note the number of strokes being made by the compressor, and then shut down the compressor and note the rate at which the air pressure falls. From the size of the compressor or from the capacity of the air reservoirs and mains an approximation of the leakage losses can be calculated and an estimate made of the cost of such losses. This test usually will have to be made at night or some time when the consumption of air can be entirely, or at least nearly suspended. How many, we wonder, would care to give out the results of such a test? 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.