

BAIRD ^T^TLOCK. (LONDON) LTD. 



2888-2889 



2886 s Furnace, Hempel's, small draught for crucibles, consisting of tripod with metal chimney, 

 inside of which is the fireclay cylinder with cover. Price with Bunsen 



2887 Extra clay parts and covers, best English fireclay 



. . per set 



F. R. & Co.'s Compressed Oxygen Injector Furnace. For the rapid fusion of metals 

 and the treatment of refractory substances at all temperatures. 



This furnace is entirely self-acting. A very fine jet of compressed oxygen is first mixed with air, then with 

 coal gas, the pressure of the oxygen being utilised to make this mixture and blow it into the furnace chamber at a 

 high speed. 



The quantity of oxygen used depends on the temperature and speed of working required, but under any 

 circumstances is very small for the work done ; and owing to the very large proportion of air used with the oxygen, 

 there is no tendency to local heating or perforation of the crucible. The temperature is under the most perfect 

 control from a red-heat to the almost instantaneous fusion of the most refractory crucibles. 



The heat is perfectly steady without any attention ; one oxygen cylinder 2 ft. long and 6 in. diameter will 

 work the furnace for several hours without any attendance whatever. 



The furnace casings are the ordinary well-known injector pattern, but are lined with a special refractory 

 material to resist the very high temperatures, which are obtained with the greatest ease. The burner is of the 

 simplest possible construction, and is not liable to damage or to get out of order. We cannot guarantee any casing 

 against fusion if the furnace is worked at its maximum power. The price of extra furnace bodies is 6/- ; extra 

 lids, 2/6. 



PRICES. 



2888 Furnace and burner to take Morgan's No. oo crucibles, capacity Ib. iron 



2889 No. i alb. 



17 6 

 19 



CROSS STREET HATTOTST GARDETST, E-C 



554 



