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434,791 3 the bottom of the mixing-chamber being pro- ing air to the induction-tube, all adapted to cr vided with an annular opening to form a operate substantially as specified. communication between the same andthe wa- In testimony whereof I affix my signature in ter-chamber, the burner proper seated in the presence of two witnesses. 5 cap-plate of the mixing-chamber, the air-in- DRURY T. KIRKPATRICK. duction tube leading from the center of the concave bottom of the oil-chamber up through Witnesses: the connecting-tube to the mixing-chamber, S. J. HOWELL, and the depending perforated flange for feed- J. R. HOWELL.