Other Modern Radial Valve A PRACTICAL TREATISE ON THE LOCOMOTIVE VALVE EGIDE WALSCHAERT With the History of Its Development and Its Evolution into IN FIVE GENERAL DIVISIONS, EMBRACING: Modern Radial Valve Gears Other than the Walschaert, with Full SCIENCE THIRD EDITION, REVISED AND ENLARGED Fully Illustrated with Sketches and Diagrams and Containing NEW YORK THE NORMAN W. HENLEY PUBLISHING CO. COPYRIGHT 1906 AND 1912 BY THE NORMAN W. HENLEY PUBLISHING CO. Composition. Printing and Electrotyping by PUBLISHERS PRINTING COMPANY, New York, U, S. A. SETTING VALVES WITH THE Walschaert VALVE GEAR-THE THREE PRIMARY TYPES CF Loco- MOTIVE VALVE MOTION-MODERN RADIAL VALVE GEARS OTHER THAN THE WALSCHAERT -THE HOBART-ALLFREE VALVE AND VALVE GEAR, WITH QUESTIONS AND ANSWERS ON BREAKDOWNS-THE BAKER-PILLIOD VALVE GEAR THE IMPROVED BAKER-PILLIOD VALVE BAN 4 128 Sheldon (Eugin) 9278 189-236 PREFACE SINCE the first edition of this book was printed the Walschaert valve gear has been adopted, practically to the exclusion of the old link motion, on nearly every railroad in America; and its success, together with the actual necessity for an outside valve gear on the extremely large locomotives now in general use, has stimulated the development of other styles of radial valve gear of which the two most successful of this type are fully described in the present edition, with questions and answers explaining the proper method of procedure in cases of breakdowns of either style of gear while on the road. And while valve setting is becoming a lost art except to the back-shop man since the general advent of radial gears, the question as to how valves with the Walschaert gear may be "set" is asked so often that it is now fully answered in this edition; and the knowledge is of decidedly more importance to the shop man at present, than to the locomotive engineer. THE AUTHOR. MARCH, 1920 |