US PATENT SUBCLASS 122 / 299
.~.~.~.~ Transverse drum

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

235.11  DF  WATER TUBE {52}
*  DD  .~ Rearwardly declined {3}
*  DD  .~.~ Over firebox {1}
*  DD  .~.~.~ Front and rear header {3}
299.~.~.~.~ Transverse drum

DEFINITION

Classification: 122/299

(under subclass 235) Devices having banks of water tubes substantially parallel, rearwardly declined over the firebox, and in communication with front and rear headers, which are in turn either directly or indirectly in communication with one or more transversely fixedly positioned drums.

SEE OR SEARCH THIS CLASS, SUBCLASS:

265, for water tube boilers in which the tubes are inclined.