US PATENT SUBCLASS 122 / 332
.~ Vertical

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

235.11  DF  WATER TUBE {52}
332.~ Vertical {10}
333  DF  .~.~> Fluid fuel
334  DF  .~.~> Side magazine
335  DF  .~.~> Annular firebox
336  DF  .~.~> Offset firebox {1}
*  DD  .~.~> Annular lower drum {4}
345  DF  .~.~> Beyond bridge wall {2}
*  DD  .~.~> Internal fire tube {1}
349  DF  .~.~> Over firebox {1}
*  DD  .~.~> Plural upper longitudinal drum {1}
*  DD  .~.~> Plural upper transverse drum {1}

DEFINITION

Classification: 122/332

(under subclass 235) Devices having vertical tubes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

103, 171, 198, 199, 247+, 266+, 275+, and 281, for vertical columns provided with looped tubes extending over the firebox.

282, 305+, for spur tube boilers.

318, 355 and 359, for vertical columns surrounding the combustion chamber, with zigzag water tubes communicating with the columns.