(under the class definition) Boilers having separate water chambers, which may or may not be in communication with each other at the top of the boiler. Theses boilers are designed to be used either as steam boilers for generating steam at different pressure or for generating steam and also for heating water when it is desired to have steam for one purpose and water heating for other purposes, as for instance, using the steam for one set of radiators and the water for another set, or for generating steam or hot water for the radiators on one floor of a building and for generating steam or hot water for radiators on another floor, with separate circuits to each compartment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20, for boilers provided with auxiliary water heaters, where the water is heated or steam generated for separate use.
33, for boilers having separate compartments, where the water is heated or steam generated indirectly by heat from water or steam heated in another compartment of the boiler by a furnace.
83, and 123, for boilers with separate compartments, where the water is fed progressively from one compartment to the next one.
125, 420, 421, and 439, for water heaters heated by furnace gases.
