Improvements in Ventilating Portable Poultry Houses.
Year: 1897

page_text: Improvements in Ventilating Portable Poultry Houses.
HENRY JOHN Fox ROSE, Poultry Appliance Manufacturer, Eaton Bray, nr.
Dunstable, do hereby declare the nature of this invention to be as follows:-
To provide in a portable poultry house, means whereby the birds have the benefit
of plenty of pure air, the inlets being automatically controlled to prevent draughts;
this I accomplish as follows.
In a span roof house, the sides under the eaves, for a depth of two feet or more,
are covered on the outside by shutters hinged to the top rail or wall plate of the
frame, the inner side of the frame being covered with wire netting to allow of the free
circulation of air, when one or both shutters are open.
At the back of the house is a wooden crossbar loosely connected to both shutters,
by iron pins firmly secured to each shutter, the holes in the ends of the bar that
slip over the pins being of such a distance apart as to keep one shutter open the full
width when the other is closed; when the shutters are both halfway open, one
balances the other. On the end of the house are secured two projecting brackets,
one near the ridge of the roof, and the other just below the crossbar; the lower end
of a vertical rod or shaft is fitted with a bearing or pivot, which enters a hole in the
bottom bracket, the shaft extending upward through a suitable hole in the top
bracket above the ridge of the roof, high enough for a wind vane attached to swing
round quite clear of the house; the lower end of the shaft, level with the crossbar
connecting the shutters, is provided with an eccentric disc firmly secured thereto;
suitable blocks or projections are formed on the said crossbar in the centre, separated
by a distance equal to the diameter of the disc, so that the revolution of the
eccentric disc by the action of the wind on the vane, causes a longitudinal movement
of the crossbar across the end of the house, thus opening one shutter and closing the
other automatically, according to the direction of the wind, the weather side being
always closed and the lee side open.
When the wind is blowing from the front or back of the house and both shutters
stand half way open, draught is prevented from entering behind the ends of the
shutters, by triangular cheek pieces attached to the house, which cover the openings
at the ends of the shutters when in this position.
I, HENRY JOHN Fox ROSE, Flint House, Dunstable, Beds. (formerly of Eaton
Bray), Poultry Appliance Manufacturer, do hereby declare the nature of this
[Price 8d.]

page_text: invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:―
The object of my invention is to provide a system of ventilation in buildings
where a large quantity of fresh air is required, in which the air inlets are operated
and controlled automatically by the action of the wind on a wind vane; the position
of the vane being varied by the direction of the wind always keeps the ventilators or
shutters open on the lee side of the house and closed on the weather side, thus doing
away with cross draughts, this I accomplish in the following manner.
Referring to the accompanying drawing in which
Fig. 1. shews an elevation of the mechanism employed.
Fig. 2 shews a plan of the same.
Similar letters refer to similar parts.
In Fig. 1 A is a wind vane mounted on the shaft B of sufficient height to be clear
of the ridge of the building, the shaft B is supported pivotally on a suitable bracket
at the bottom, and by a bearing near the ridge of the roof in which it can revolve
freely, at the proper height the eccentric C is securely fastened to the shaft B and is
free to revolve between the projections D D which are a part of or fixed to the bar E,
the distance between DD being equal to the diameter of the eccentric C and so
adjusted that the movement of C causes a longitudinal movement only of the bar E.
FF are shafts or rods working in suitable bearings attached to each side wall of the
building on the inside, they are connected at one end to the bar E by radial
arms GG secured to the shafts FF and by studs or pins a, a, to the bar E. The
shaft FF are connected by the arms H H and the links II to the inside of the
ventilators or shutters, these may be of any desired form; either shutters or windows
hinged at the top. or pivoted in the centre, or may be of lattice work if connected
up so that all the laths open and close simultaneously with one movement; whatever
shape or style of ventilator is used, they should always work between projections
extended from the frame to cover the openings at the ends of the ventilators,
allowing the air to enter only at the top or bottom, or both. When used on
small portable houses I sometimes dispense with the shafts FF and couple the
end of the ventilators directly to the bar E, by pins secured to the ends of the
ventilators. In poultry houses the shaft B is usually supported outside the house at
one end, in other buildings it can be located at the most convenient point, and by
the extension of the shafts F F a long row of ventilators can be controlled by one
vane, and in buildings of more than one floor in height, each floor can be served by
the same shaft, by an extra eccentric and mechanism for each. In the case of
ventilators being required at the ends of a building as well as the sides, an eccentric
on the shaft at right angles to the other, will, with the necessary parts, perform the
work. Where many ventilators are connected in line in long buildings, the arms HH
may be connected by crossbars to releive the strain on the shafts FF, as the
ventilators on one side act as a couterbalance to the others.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1st The automatic control of the ventilation of buildings by the use of a wind
vane as described.
2nd The combination of the vane A, the shaft B, the eccentric C, the bar E
with the projections DD, the shafts FF, the arms GG the studs a, a, the
arms H H and the links II with the ventilators, substantially as and for the
purpose described and set forth.