Improvements in Ventilators.
Year: 1891

page_text: Date of Application, 8th June, 1891
Complete Specification Left, 10th Feb., 1892-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Ventilators.
I, EDWARD COPLAND, of 71 Skene Square, Aberdeen N.B., Decorator, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to produce a ventilator wherein the advantages of
both the sliding and the hopper form of ventilator are combined without their
disadvantages.
The hinge of the ordinary hopper ventilator frequently gets out of order and the
hopper is not then airtight and consequently lets in the outside air when it is not
required. The sliding ventilator is not so liable to get out of order as the hopper,
but it has the disadvantage of allowing the entering air or wind to impinge as a
draught on the heads of the persons in the room or other place.
By this my invention I propose to make the ventilator of the sliding form
providing it with requisite means for raising and lowering, and on the inside of the
window or other place to which the ventilator may be applied, I securely attach a
hopper immediately in front of the sliding ventilator, the said hopper being open at
the top but closed airtight at the sides and front. By this construction of ventilator
the entering air is directed towards the ceiling or top of the room or other place,
while the entry of air can he regulated at will.
Dated this 8th day of June 1891
CASTLE SMITH,
Invention Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
T
COMPLETE SPECIFICATION.
Improvements in Ventilators.
1 EDWARD COPLAND, of 71 Skene Square, Aberdeen N.B., Decorator, 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 :-
The object of this invention is to produce a ventilator wherein the advantages of
both the sliding and the hopper form of ventilator are combined without their
disadvantages.
The hinge of the ordinary hopper ventilator frequently gets out of order and the
hopper is not then airtight and consequently lets in the outside air when it is not
required. The sliding ventilator is not so liable to get out of order as the hopper,
but it has the disadvantage of allowing the entering air or wind to impinge as a
draught on the heads of the persons in the room or other place.
By this my invention, I propose to make the ventilator of the sliding form
providing it with requisite means for raising and lowering, and on the inside of the
window or other place to which the ventilator may be applied, I securely attach a
hopper immediately in front of the sliding ventilator, the said hopper being open at
the top but closed airtight at the sides and front. By this construction of ventilator
the entering air is directed towards the ceiling or top of the room or other place,
while the entry of air can be regulated at will.
And in order that the nature of my invention and the manner in which it is or
may be carried into practical effect may be well understood I will now describe the
same with reference to the accompanying sheet of drawings wherein the same

page_text: letters of reference are used to indicate the same or corresponding parts in all the
figures.
Figure 1 shews an inside elevation of a leaded window with my improved
ventilator, and Figure 2 is a sectional elevation taken on the line of Figure 1.
Figure 3 shews an inside elevation of an ordinary house window with my improved
ventilator applied thereto, and Figure 4 is a sectional elevation taken on the line Y Y
of Figure 3.
Figure 5 is an elevation shewing a modification of the invention and
Figure 6 is a vertical section taken on the line Z Z of Figure 5.
In all the views the ventilator is shewn partly raised, to aid in a clear under-
standing of the invention and its mode of action.
Referring first to Figures 1 to 4. A is a hopper fixed in position on the inside
of the window and to the frame or casing thereof. The said hopper is made and
fixed after the manner of the ordinary hopper shaped ventilators, viz. :—with a
rectangular back and two triangular sides, but is open at the top. Immediately in
front of the hopper A is a shutter B which is free to slide in vertical grooves C
made in or attached to the window frame or casing after the manner of the ordinary
single hung sash window. The shutter B is actuated by means of a cord D or the
like passing over a pulley E fixed to the window frame or in any other suitable
position above the shutter B as shewn. Any convenient means may be adopted for
securing the free end of the cord so that the shutter may be held suspended in any
desired position in the vertical grooves C. To prevent the wind from whistling in
from the outside between the bottom or lower end H of the fixed frame F and the
sliding shutter B, I attach a strip of felt, indiarubber, or other suitable packing
material G to the said bottom H of the fixed frame F. This packing G may be
secured on the underside of the bottom H as shown in Figure 4, or on the inside of
the bottom I as shewn in Figure 2; or it may be secured on both under and inner
sides of the bottom H, according to circumstances.
In the modification shewn in Figures 5 and 6 the hopper consists of one sheet of
glass J framed or not, as desired, the vertical sides of which, fit into inclined
grooves K in each side of the window frame. This form of my invention is especially
suited for the side windows of railway carriages or for recess windows, and it allows
for ready removal of the glass J when it is required to clean or repair any of the
parts, besides being a cheap and simple form of construction. The sliding shutter B
is the same as with the other forms of my invention. The arrows in Figures 2, 4
& 6, shew the direction the entering air will take when the shutter B is raised.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An improved ventilator consisting of an ordinary vertically moving shutter
ventilator such as B in combination with an open topped hopper such as A with a
packing of felt, india rubber, or other suitable material G at the bottom H of the
fixed frame F to prevent the entry of air at this part substantially as and for the
purpose hereinbefore set forth and illustrated in Figures 1 to 4 of the accompanying
drawings.
2. The modification of my invention described with reference to Figures 5 & 6
wherein the hopper consists of a sheet of glass J framed or not, fitting in inclined
grooves K.in the sides of the window frame or recess, so that the inclined glass J
may be readily removed when so desired, substantially as and for the purpose
hereinbefore set forth.
ليمي
1
1005
*F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.