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Crown Tri-Metal III
Crown Tunnessen 1 Patent
Crown Tunnessen 2 Patent
Crown Tri-Metal IV
Crown Tri-Metal IV Marking
  Demmler Bros.JPG - DEMMLER BROS I - Tin drivers lamp, milk can style, marked on font DEMMLER BROS PITTSBURGH PA, rear lid hinge , 2 7/8 in. tall to top of lid, 1 5/8 in. base dia. (While brothers Hugh and Louis Demmler started their business in Pittsburgh in 1860, they entered the wick lamp supply business in 1889 advertising Demmler Bros. as the successors to C. Cherry wick lamps.  Cherry wick lamps are very hard to find lamps with a trademark of two cherries on a stem.   The Demmlers were unable to acquire the trademark so the stamping on Demmler lamps was changed to side by side stampings of CHIRRY with a four-quartered circle in between the names.  The company continued to supply wick lamps until 1902 selling both face and driver wick lamps with the Chirry marking, Demmler Bros. marking as shown in this photo, and Demmler Bros. Monongahela Valley stampings shown elsewhere in the pics.  It's interesting to note that other Monongahela Valley stampings have the John Dunlap Co. stamped within the crest (see photos elsewhere in oilwick lamps).  See Johnson, Eureka #4, pp 1-3)  
Demmler Bros. II
Demmler Bros. II Marking
Demmler Bros. Monongahela Valley
Demmler Bros. Monongahela Valley Marking
DL I

Demmler Bros | DEMMLER BROS I - Tin drivers lamp, milk can style, marked on font DEMMLER BROS PITTSBURGH PA, rear lid hinge , 2 7/8 in. tall to top of lid, 1 5/8 in. base dia. (While brothers Hugh and Louis Demmler started their business in Pittsburgh in 1860, they entered the wick lamp supply business in 1889 advertising Demmler Bros. as the successors to C. Cherry wick lamps. Cherry wick lamps are very hard to find lamps with a trademark of two cherries on a stem. The Demmlers were unable to acquire the trademark so the stamping on Demmler lamps was changed to side by side stampings of CHIRRY with a four-quartered circle in between the names. The company continued to supply wick lamps until 1902 selling both face and driver wick lamps with the Chirry marking, Demmler Bros. marking as shown in this photo, and Demmler Bros. Monongahela Valley stampings shown elsewhere in the pics. It's interesting to note that other Monongahela Valley stampings have the John Dunlap Co. stamped within the crest (see photos elsewhere in oilwick lamps). See Johnson, Eureka #4, pp 1-3) Download Original Image
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