POULTRY LABORATORY GT7IDE 117 



Transom arrangement for opening and closing 

 all chick doors in the brooder house at once. 



Ropes and pulleys for the raising and lowering 

 of covers for inspection, cleaning, and airing. 



Light, quick action springs upon doors to the 

 brooder pens, shutting them immediately upon 

 entry and keeping them closed. 



Muslin frames in brooder and incubator cellar 

 windows, which are hinged and may be raised 

 inside by cord and pulley when it is desired to 

 shut the sash. 



