Improvements in "Hopper Ventilators" for Windows and other Positions.
Year: 1890

page_text: Date of Application, 6th S pt., 1890
-omplete Specification Left, 6th June, 1891-Accepted, 25th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in "Hopper Ventilators" for Windows and other
Positions.
1, GEORGE HENRY HOVEY, of Norfolk Road, Sheffield, in the County of York,
Furniture Manufacturer, do hereby declare the nature of my invention to be as
follows:-
This invention relates to improvements in the construction of what are
known to the trade as hopper ventilators, and which are usually adapted to,
or may forin part of the windows of public buildings, for the purpose of admiting
air from the outside.
As hopper ventilators are at present constructed the opening to admit air
is made the full size or thereabouts of one side of the hopper, and the cold air
on entering is at liberty to descend at once into the room in a stream causing
a draught, and constituting a serious objection to the use of such a method of
ventilation.
My invention is to avoid causing a down draught, by constructing the hopper
in such a manner as to induce the air to disperse into the room in an upward
direction and so become mixed with the warmer air in the upper part of room.
In carrying the invention into practice 1 make the frame-work of the ventilator
of any suitable material, such as copper, iron or wood, or a combination of such like
materials, and prepared for glazing or otherwise.
The side that fits in the window frame is vertical, and the part that projects
into the room inclines upwards at an angle, say for example, of 55 degrees or there-
abouts from the bottom edge of the vertical part, and if prefered it may terminate
vertically or may for a short distance from the top edge be inclined inwards, or
towards the window.
The opening to admit the air from the outside is preferably about half the height
of the hopper, and is closed by a sash or casement which may be hinged to the
bottom of the hopper, and be drawn back against the inclined part, and be secured
in either position by a spring catch or other fastening.
The top of the ventilator is open, the sides are glazed, the incline and its top
edge are also glazed, but the lower part of the incline is left unglazed to permit
the manipulation of the spring catch; when the sash is drawn back, this lower open
part is closed by the sash before mentioned so that the air is admitted, and passes
up into what may be termed the superstructure, or diffusing chamber of the hopper,
from the top of which it is deflected upwards in a diffused condition into the room
by the vertical or inclined edge before described.
COMPLETE SPECIFICATION.
Improvements in
61
Hopper Ventilators" for Windows and other
Positions.
I, GEORGE HENRY HOVEY, of Norfolk Road, Sheffield, in the County of York,
Furniture Manufacturer do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
This invention relates to improvements in the construction of what are known to

page_text: the trade as hopper ventilators, and which are usually adapted to, or may form
part of the windows of public buildings for the purpose of admiting air from the
outside.
As hopper ventilators are at present constructed, the opening to admit air is
made the full size or thereabouts of one side of the hopper, and the cold air on
entering is at liberty to descend at once into the room in a stream causing a
draught and constituting a serious objection to the use of such a method of
ventilation.
My invention is to avoid causing a down draught by constructing the hopper in
such a manner as to induce the air to disperse into the room in an upward direction
and so become mixed with the warmer air in the upper part of room.
My invention is illustrated in the annexed sheet of drawings, like letters of
reference indiente like parts in any of the figures.
Fig. 1, is a perspective view of ventilator.
Fig. 2, end view, showing sash or casement closed.
Fig. 3, end view, showing sash or casement open.
In carrying the invention into practice make the framework of the ventilator
of any suitable material, such as copper, iron, or wood, or a combination of such
like materials, and prepared for glazing or otherwise.
The side A, that fits in the window-frame is vertical, and the part B, that
projects into the room inclines upwards at an angle, say for example, of 55 degrees
or thereabouts from the bottom edge of the vertical part, and if preferred it may
terminate vertically or may for a short distance from the top edge be inclined
inwards C, or towards the window.
The opening D, to admit air from the outside is preferably about half the height
of the hopper, and is closed by a sash or easement E, which may be hinged to the
bottom of the hopper, and be drawn back against the inclined part, and be secured
in either position by a spring catel: F, or other fastening.
The top of the ventilator is open, the sides are glazed, the incline and its top
edge are also glazed, but the lower part of the incline is left unglazed to permit the
manipulation of the spring catch; when the sash is drawn back, this lower open
part is closed by the sash before mentioned so that the air is admitted, and passes
up into what may be termed the superstructure of the hopper, or diffusing chamber,
from the top of which it is deflected upwards in a diffused condition into the room
by the vertical or inclined edge before described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same may be carried into practice; I declare that
what claim is :-
The construction of a hopper ventilator so proportioned as to admit outer air in
such a quantity as to prevent down draught and insure circulation.
Dated the 5th day of June 1801.
ROBT. F. DRURY,
Bank Buildings, George Street, Sheffield, Agent for the Applicant.