US PATENT SUBCLASS 122 / 284
.~.~ Headers at right angles

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

235.11  DF  WATER TUBE {52}
*  DD  .~ Over bridge wall {3}
284.~.~ Headers at right angles

DEFINITION

Classification: 122/284

(under subclass 235) Water tube boilers having water tubes extending over the bridge wall and in communication with headers at each end, which are substantially at right angles to each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

288, for similar structure over a firebox.