Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules (1908)
National correspondence school of railroading, Chicago. [from old catalog] · [Chicago] · leaf 76
usually provided with three or more lugsor wings, which are cast to the valve below its seat (Plate BOILER CHECKS. 6s 7). The purpose of these lugs or wings is to assist inreseating the valve centrally by acting as guides. Theselugs or wings should not be fitted in the casing tooloosely, as they… … JOINTRING TO BOILER
Locomotives
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
