(under the class definition) Devices for preventing live sparks from passing out of the stack or chimney. This is accomplished either by screens, baffles, steam or water spray located either in the smokebox or smokestack and in some cases by screens in the boiler flues.
SEE OR SEARCH THIS CLASS, SUBCLASS:
120, for devices for returning only the sparks to a firebox.
145+, for devices wherein the sparks and smoke are conducted away to the ground from the locomotive or over the train.
203+, for structure wherein both the smoke and sparks are returned to the firebox.
322+, for furnaces having ordinary baffles and
heat-retainers. SEE OR SEARCH CLASS
96, Gas Separation: Apparatus, appropriate subclasses, for gas separation apparatus having no significant furnace structure, especially
243+, for gas separation apparatus combined with gas and liquid contact means.
126, Stoves and Furnaces,
280, for soot catchers.
261, Gas and Liquid Contact Apparatus, for devices in which the separation is effected by gas and liquid contact only.