Practical instructor and reference book for locomotive firemen and engineers: a practical treatise .. (1916)
Lockhart, Charles F. (Charles Fulton), b. 1872 · New York, The Norman W. Henley publishing co. · leaf 70
so, being set forward toward thepin just the amount of the lap plus the lead. 231. The amount which the eccentric is advanced onthe axle toward the pin from its position of 90 degrees,or the fourth part of a circle behind the pin, is called theangular advance of the eccentric and is used to offset… … O 68 STEPHENSON VALVE GEAR 233. The back motion eccentric bears the same relationto the pin when the pin is on the back center in the back-ward motion that the forward motion eccentric bears tothe pin when in the forward motion. 234. The main pin being on the forward center, theeccentric in moving…
Locomotives
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