Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives (1916)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co., pub. for Sears, Roebuck & co. · leaf 412
INJECTORS, STEAM GAUGES, ETC. 403 center of the top plate on top of the spring, and islocked with a key, and a jam-nut holding it firmly tois place, which makes it perfectly safe from beingtampered with.
Locomotives
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
