Rare Flange Lip Oil Lamp Burner with 2 Thumbwheels for Wick Adjustment & Carbon Brush Off !!! Dated 1868 & 1892.
Converted from a Normal 2 1/8 inch Flange Lip Burner to a Patented modification for Carbon Cleaner Rod which Brushes off the Wick's Top. 1892 Factory conversions were all crudely fitted by hand. See all photos.
Thumbwheels Read : "Patented Feb.11,1868 & PAT. Aug. 30,1892"
Threaded 7/8 inch base fits a standard zero or #1 small table lamp collar. Bottom half could be permanently attached onto the top half by bending remaining prongs inside the bottom of the burner cup, but I prefer to pull it off for viewing the internal parts.
(Shown with flange Lip Chimney displayed in last photo, Not Included)