CENTRAL SCIENTIFIC CO., CHICAGO, TT. 8. A. 



119 



2138. 



No. 2150. 



No. 2152. 



No. 2154. 



No. 2155. 



Burners, High Temperature. 



Bu KNEES, High Temperature, of grid type, with air and gas regulator, suitable for coal, gaso- 

 line or natural gas. 



No A B C 



Height, inches 6 6% 



Diameter of grid, inches.. % 1 1% 



Each $1.50 2.00 2.60 



2140. BURNER, High Temperature, Quadruple, consisting of four of the No. 2138A Burners mounted 



on a common supply tube. Useful in heating combustion and muffle furnaces 10.00 



2144. BURNERS, High Temperature, of Meker type with adjustment for air and gas. Constructed 

 of brass with 'grid top. 



No 3 \ 



Height of burner, inches 6% 7% 



Diameter of flame, mm 25 30 



Each 3.00 3.50 



2146. BURNERS, Braun's Vulcan Non-Blast, for coal or natural gas, for use with Braun Furnaces. 

 These are non-blast burners operating without noise and upon regular gas pressure. They 

 are so designed as to secure a correct mixture of gas and air to produce the most intense 

 heat. Temperatures up to 2100F., have been obtained. Each tube consumes about 50 cubic 

 feet of gas per hour. Complete with regulating valve for each burner. 



No A B C D 



Number of burner tubes 1 2 3 4 



Each 3.26 7.25 10.50 12.50 



Burners, Blast. 



2150. BURNER, Blast, Braun Gas, for use with artificial or natural gas. Designed for use with Fur- 

 naces Nos. 6300 and 6398. Requires a blower to furnish sufficient amount of air. (See No. 

 6400). Should be connected to a %-inch gas supply line Shipping weight, 18 pounds. Com- 

 plete with air and gas valves 15.50 



.2152. BURNER, Blast, Bunsen's style, with three interchangeable gas tips and with stop-cocks on gas 

 and air inlet tube. An excellent lamp for ordinary laboratory use. Can be adjusted in height 

 from 8 to 10 inches. For coal gas only 5.40 



2154. BURNER, Blast, Bunsen's, extra large size, on adjustable stand, with two tips. For coal gas 



only 10.00 



2155. BURNER, Blast, similar in construction to Bunsen's but with needle valves instead of stop- 



cocks. Mounted on ball and socket joint, with set of three gas tips and two sleeves. Can 

 be used with coal, gasoline or natural gas 6.00 



