BAIRD &TATLOCK (LOM)ON) LTD. 



50 Extra crucibles salamander . . . . . . each 006 



51 clay .. .. .. ,,002 



52 Extra grids for burners 020 



53 Extra gauzes . . . . . . . . . . . . . . 006 



Gas supply required, 40 cubic ft. per hour == i in. pipe and tap. 



.54 Furnace No. 363, taking crucibles not exceeding 4 by 3.^ in. to melt 6 Ibs. brass, price 



complete . . . . . . . . . . . . ..250 



Extra crucibles salamander . . each 015 



^56 clay . . . . . . ,,005 



1 57 Extra grids for burners . . 020 



; 58 Extra gauzes . . . . . . . . . . . . . . 006 



Gas supply, 60 cubic ft. per hour = J in. clear bore gas pipe and tap. 



The lid never requires to be lifted, it can be pushed sideways sufficiently to enable 

 crucibles to be lifted out. 





2959 



59 Lecture and Experimental Furnace 



Working with the same burner as a draught or blast furnace at any temperature up to the fusion 

 ice casing, and adapted for crucibles, muffles, tubes, cupels, distillation by descension, treatment of 

 substances with gases, at high temperatures, small forgings, roasting ores, etc. 



:. When used as a blast furnace, ar, empty crucible 2V by 2j in. can be raised to the fusing point of 

 von in two minutes, starting all cold. 



When the plug is removed and replaced by the chimney, the blower being stopped, it will raise tha 



ible to bright redness in about ten minutes. This requires the gas to be turned very low, and the adjustment 



is a draught furnace requires some little practice to obtain the best results. If the gas is in excess 



inns at the top of the chimney instead of in the furnace, and, of course, does no work. The best results are 



'.c<l when the gas is connected to the straight jet, but it will work as a draught furnace fairly well if the gas is 



nccted at the side jet in the same way as when used for blast, but, of course, with a much smaller supply of gas 



liv turning the casing on its side, the contents may be seen by a class whilst the furnace is working, and 



:i in this position be used for crucibles, muffles, combustion tubes, cupels, or roasting ; and with either draught 



ording to the temperature required. 



The plug is perforated for distillations by descension, and when removed will admit of a i-in. combustion 

 1'ciug passed through the furnace. When used with blast the instructions for the injector furnace must be 

 vl, the only difference being that the lecture furnace is more silent, and about twice as quick in working. 

 ' rucibles are No. o size, and larger sizes must not b'e used. 



2 >0 Extra muffles, fireclay 



2.1 



2'. 2 



M.3 



crucibles 



muffles, salamander 



crucibles, 



1 17 6 



009 

 002 

 1 6 

 004 



565 



