US PATENT SUBCLASS 122 / 300
.~.~.~.~ Tubes beyond side wall

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}
300.~.~.~.~ Tubes beyond side wall

DEFINITION

Classification: 122/300

(under subclass 235) Devices consisting of banks of water tubes rearwardly declined over the firebox and in communication with front and rear headers, which may also be in communication with some form of drums above the tubes, and also having banks of tubes beyond side walls of the main combustion chamber.