Emergency ventilation control apparatus for animal confinement h

Details Emergency ventilation control apparatus for animal confinement h Emergency ventilation control apparatus for animal confinement h

1981-08-26

1984-01-31

Favors, Edward G.

Animal husbandry

Feeding device

Hopper and trough

49 30, 49 31, 119 21, 160 9, 254375, F24F 1308

Patent

active

044282788

ABSTRACT:
An apparatus responsive to electric power failure for opening curtains or doors normally covering ventilation openings in a confinement house of the type used for raising poultry and livestock is disclosed. An electromagnet (59) is provided which is energized by the electric power supply (41) to the house (10) and is de-energized upon failure of the electric power supply (41). A pivoted metal strip (61) is normally in contact with the magnet (59) and is interconnected by means of a cord (66) with the winch (25) which is used to raise and lower the curtains (16). When the electric power (41) fails and the electromagnet (59) is de-energized, the cord (66) releases, and allows the curtains (16) to fall under their own weight. A capacitor (78) prevents de-energization of the magnet (59) when momentary power failures occur.

REFERENCES:
patent: 1684929 (1928-09-01), Snavely
patent: 2636933 (1953-04-01), Lecher
patent: 3973173 (1976-08-01), Smith
patent: 4113175 (1978-09-01), Sutton, Jr.

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