Excerpt from The Steam Engine, Vol. 3: A Treatise on Steam Engines and Boilers, Comprising the Principles and Practice of the Combustion of Fuel, the Economical Generation of Steam, the Construction of Steam Boilers; And the Principles, Construction, and Performance of Steam Engines The movements of the slide-valve, as driven by an eccentric fixed on the crank-shaft, in relation to those of the piston, may be exhibited diagrammatically. Take the following dimensions for illustration - Dia meter of cylinder, 15 inches; stroke of piston, 22 inches; width of steam ports, I% inches; width of exhaust port, 212 inches; width of bars or bridges, inch; travel of valve, 4% inches; outside lap, I inch; inside lap, nil; outside lead, inch; inside lead, inches; angular advance, linear advance, inches. 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.