Animal husbandry – Feeding device – Hopper and trough
Patent
1974-08-28
1976-04-20
Wayner, William E.
Animal husbandry
Feeding device
Hopper and trough
98 33R, 98 41R, 119 16, 236 49, F24F 310, F24F 1100
Patent
active
039513360
ABSTRACT:
A ventilation system for a livestock building to provide a controlled environment therein. The ventilation system includes one or more exhaust fans for withdrawing air from the building, and also includes a controllable baffle system for permitting fresh air to flow into the building. The baffle system includes movable baffles disposed for closing openings formed in the building, which openings are located in the ceiling or in the sidewalls adjacent the upper edges thereof. A drive mechanism is connected to the baffles for moving same between open and closed positions. The drive mechanism is actuated by a pressure sensing device which senses the pressure differential between the pressure on the inside of the building and the atmospheric pressure which exists outside the building. The sensing device maintains the pressure in the building at a level which is slightly below atmospheric pressure. When the pressure in the building falls below this level, then the drive device is automatically energized to open the baffles to permit the inflow of air accompanied by the discharge of air through the exhaust fan. Similarly, when the pressure in the building exceeds this level, then the drive device is energized to close the baffles. The exhaust fans are preferably controlled by thermostatic switches which cause the air in the building to be changed when a preselected temperature is exceeded.
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patent: 3802479 (1974-04-01), Newell et al.
patent: 3808960 (1974-05-01), Van Huis
Miller Loren C.
Walsh Kenneth G.
Miller and Sons Structures, Inc.
Wayner William E.
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