'Iiii; TKiNcirLES of Brooding. 



325 



which enters through the four |-inch holes at the inside end is warmed 

 by contact and sent up through the perforated tin of the chick guard. 

 It is in this way that fresh air moderately heated is supplied to the 

 chicks. C is a floor collar, which fits over the collar of the super-chamber 

 F. // is a chick guard, which telescopes over the floor 

 collar G, protecting the chicks from the hot stem /, and 

 providing a passage way for the entrance of fresh air under 

 the hover. It is made in a separate piece from the floor 

 collar for convenience in shipping. The perforated tin at 

 the top is bent over so as to close up the space between the 

 guard H and the stem /. This is to prevent litter from being 

 v/orkedinto the opening and down onto the burner box below. 

 / is the stem which telescopes over the collar to the burner 

 box and connects it with the radiator K. J is the collar 

 to the radiator made to telescope over the stem /. K is 

 the radiator. L is a diaphragm of tin surmounted with a 

 thick mat of asbestos. It extends to within f of an inch 

 of the outer rim 

 of the radiator 'i 



andissupported 

 fof an inch 

 above the bot- 

 tom of the radi- 

 ator. M is the 

 outlet to the 

 radiator. It is 

 so arranged that 

 the heat passing : 



up into the radi- 

 ator is spread 

 and reflected 

 down on to the 

 chicks by the 

 tin and asbes- 

 tos diaphragm 

 around which it 



cannot escape till it is forced to the outer edge of the radiator, 

 escaping entirely, the air has to pass to the upper center of the radiator 

 to pa.ss out through the outlet M. N is a connection between the out- 

 let and the vent pipe P. O is a sheet of tin 4" square, with a hole in 

 the center large enough to accommodate the connecting pipe N. This 





I 



Fig. 102. — The gasoline healer complete 



h 



Before 



