1. A curtain release device for poultry houses of the type having an electrically operated ventilating system and side wall curtains normally held in an upper or closed position by a cable connecting the curtains and a winch assembly, said device comprising:
a. an electrical monitoring means for completing an electrical circuit responsive to interruption of electrical current to said poultry house;
b. a normally closed latching means connected to said monitoring means, said latching means being moved to a release position responsive to the completion of said electrical circuit; and
c. a connecting means having one end thereof attached to said winch assembly and the other end releasably connected to said latching means, said connecting means normally holding said winch assembly with said curtains in a closed position, but being released upon movement of said latching means to said release position to thereby release said winch assembly, whereby said curtain is released upon interruption of electrical current to said poultry house.