BEE SMOKERS. 115 



The tinplate blast pipe is 4j in. long, its bore 

 tapering from f in. to slightly more than J in. The 

 pipe is bent into the shape shown by Fig. 104, and 

 extends to within | in. of the front of the fire 

 holder. The whole of the sheet metal work is 

 attached to the bellows with two screws, holes for 

 which, 2| in. apart, must be punched within | in. 

 of the base of the funnel. The blast pipe is 

 hooked into the hole in the bellows made for its 

 reception, and the screws are put in at the back, 

 a couple of bits of tinplate tubing, 1 in. long, 

 through which the screws pass, preventing the 

 bellows and fire box coming in contact with each 

 other. 



