Gasoline-Heated Brooder-House. 



201 



The danger with the gasoHne system might come from too 

 high a flame which also might unsolder the metal work, or what is 

 more likely to be the case, the gasoline flame might go out when run 

 too low owing to the break which may occur in the flow of the gasoline 

 due to air bubbles, foreign matter or the presence of water in the gaso- 

 line which settles in the burner as the gasoline evaporates. This does 

 not often occur. The gasoline will continue to flow when for any 

 reason, the flame is extinguished and will fill the heater space with a 

 very explosive vapor. The attendant who through carelessness or ignor- 

 ance undertakes in such- case to light the burner before the vapors have 

 escaped, may cause an explosion the instant the flame comes in contact 

 with the vapor. Gasoline itself is not explosive. It is the vapor which 



Fig. j^.^Two type's of fronts which are being tried. Too much cloth in tJic front 

 makes the tem.perature too variable for winter use, or in exposed locations. 



is given off that causes explosions and which ignites and burns. Such 

 a fire is dilBcult to extinguish because the vapor is expansive and readily 

 rises and burns where a liquid could not go. There is also danger from 

 fire, if the heater be so constructed that the flame can by any possibility 

 reach the woodwork. In order to guard against this possible danger, 

 the heater here recommended is made of galvanized iron so joined as to 

 make unsoldering impossible. (Fig. 62.) It is made as nearly fire proof 

 as it is possible to construct any device where a flame is used. In order 

 to prevent explosions and to provide against danger through carelessness 

 in case the flame should go out, the heater is so constructed that the 

 gasoline is conducted out doors instead of leaving it to evaporate within 

 the burner box. (Plate I.) 



\2. A large, roomy hover. 



A large hover, almost the entire width of the house, with slit table 

 oilcloth curtains to prevent a too rapid escape of heat from under the 



