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  Cazen Patent.JPG - CAZEN'S CARBIDE SAFETY LAMP - Cazen's carbide safety lamp, US patent #1,443,815 Jan. 30, 1923 by Canaan de Cazen, Montreal, Quebec, Canada; shown with carbide cap lamp for scale; brass and aluminum; 21 1/2 in. tall to top of bail, 7 1/2 in. reflector, 6 5/8 in. base dia., marked on brass plaque on back of base CAZEN'S IDEAL ECONOMIC SAFETY LAMP PATENTED CANADA 1922 PATENTED U.S.A. 1923 OTHER PATENTS PENDING (Cazen was awarded Canadian patent No. CA 223178 for an acetylene generator for lamps on Aug. 29,1922. The Canadian patent expired on Aug. 29, 1939. The US patent application was filed Sept. 20, 1920. The de Cazen lamp is a large area lamp that includes an interesting safety feature whereby the water supply will be automatically cut off when the acetylene gas pressure has reached a predetermined point thus eliminating the danger of explosion.) SEE THE DE CAZEN PATENT IN THE FOLLOWING PICS  
de Cazen Lamp Patent I
de Cazen Lamp Patent II
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Cazen Patent | CAZEN'S CARBIDE SAFETY LAMP - Cazen's carbide safety lamp, US patent #1,443,815 Jan. 30, 1923 by Canaan de Cazen, Montreal, Quebec, Canada; shown with carbide cap lamp for scale; brass and aluminum; 21 1/2 in. tall to top of bail, 7 1/2 in. reflector, 6 5/8 in. base dia., marked on brass plaque on back of base CAZEN'S IDEAL ECONOMIC SAFETY LAMP PATENTED CANADA 1922 PATENTED U.S.A. 1923 OTHER PATENTS PENDING (Cazen was awarded Canadian patent No. CA 223178 for an acetylene generator for lamps on Aug. 29,1922. The Canadian patent expired on Aug. 29, 1939. The US patent application was filed Sept. 20, 1920. The de Cazen lamp is a large area lamp that includes an interesting safety feature whereby the water supply will be automatically cut off when the acetylene gas pressure has reached a predetermined point thus eliminating the danger of explosion.) SEE THE DE CAZEN PATENT IN THE FOLLOWING PICS Download Original Image
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