IMPROVEMENTS IN WINDOW SASHES
Year: 1878

page_text: LETTERS PATENT to George Scudamore, of South Hampstead, in the County
of Middlesex, for the Invention of "IMPROVEMENTS IN WINDOW SASHES."
PROVISIONAL SPECIFICATION left by the said George Scudamore at the
Office of the Commissioners of Patents on the 1st June 1878.
GEORGE SCUDAMORE, of South Hampstead, in the County of Middlesex. "Iм-
PROVEMENTS IN WINDOW SASHES."
My Invention relates to improvements in window sashes, whereby provision is
made for the effective ventilation of rooms, apartments, and other places; and it
consists in constructing the lower portion of the lower sash with openings for the
admission of air, which is directed upwards by means of deflecting plates, so as to
prevent draught; and in constructing the upper portion of the upper sash with per-
forations for the escape of vitiated air, and which are capable of being closed
or partially closed by a valve or slide, by preference arranged at its outer side.
The openings of the lower sash may be covered with a perforated plate or grating
for the purpose of dividing the current of air, and the deflecting plates may be
hinged, so as to be capable of being closed at will in order to entirely intercept the
said current.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Scudamore in the Great Seal Patent Office on the 30th
November 1878.
"IM-
GEORGE SCUDAMORE, of South Hampstead, in the County of Middlesex.
PROVEMENTS IN WINDOW SASHES."
My said Invention relates to improvements in window sashes, whereby provision
is made for the effective ventilation of rooms, apartments, and other places; and it
consists in constructing the lower portion of the lower sash with openings for the
admission of fresh air, which is directed upwards by means of deflecting plates,
so as to prevent draught; and in constructing the upper portion of the upper
sash with perforations.for the admission of fresh air and the escape of vitiated air,
and which are capable of being closed or partially closed by a valve or slide.
The opening of the lower sash may be covered with a perforated plate or grating,
or with wire gauze, on one or both sides for the purpose of dividing the current of
air, and the deflecting plates may be hinged, so as to be capable of being closed at
will in order to entirely intercept the said current.
And in order that my said Invention may be fully understood, I shall now pro-
ceed more particularly to describe the same, and for that purpose shall refer to the
several Figures on the annexed Sheet of Drawings, the same letters of reference
indicating corresponding parts in all the Figures.
Figure 1 of the accompanying Drawings represents an isometrical perspective
view of a window with my said Invention applied thereto, the view being taken
from the interior.
Figure 2 is a transverse vertical section of a portion of the same drawn to a larger
scale.
Figure 3 is an elevation of the outer side of a portion of the lower sash, shewing
the perforated plate over the aperture at the lower part thereof.
Figure 4 is an elevation of one of the deflectors applied to the inner side of the
lower sash at the bottom thereof.
And Figure 5 is a detail of a portion of the top part of the upper sash, shewing
the valve or slide at the inner side thereof.
A is the lower sash and A¹ is the upper sash, which in their general construction
and arrangement may be made in any usual or convenient manner. In the lower
part a of the lower sash A I form horizontal openings 6 for the admission of air, in
front of which I arrange partitions or screens c, which are made of sufficient height
to constitute deflectors for directing upwards the currents of air admitted through
the openings b, so as to prevent draughts. The upper portion c¹ of each deflector is
hinged, so as to admit of its being turned down from the position shewn on the
left-hand side of Figure 1 and in full lines in Figure 2, and also in Figure 4, to that
indicated on the right-hand side of Figure 1 and in dotted lines in Figure 2, in
.order to cut off the supply of air through the openings 6 when necessary. The
openings b, b, are also covered on their outer and inner sides with perforated
plates d, d, (one of the outer ones of which is shewn in elevation in Figure 3), the
object of these perforated coverings being to divide or break up the current of air
admitted through the said openings into a number of fine currents, and thus further
obviate any liability of a sensation of drauglit being experienced by the occupants
of the apartment or place in which the window is situate.
The partitions or screens c may be formed with a lip or projection c² for the facility
of raising the sash.
In order to further provide for the admission of fresh air and to promote the
escape of vitiated air, and secure effective ventilation, the upper portion a' of the
upper sash A¹ is also formed with a series of horizontal perforations d', d, which are
capable of being covered wholly or partially, as required, by means of a valve or
slide e (see detail, Figure 5), having similar perforations, the valve or slide being

page_text: provided with cords f, f, passing over pulleys g for the facility of adjusting its
position. In my Drawings the valve or slide is represented by full lines, as in its
open position, its perforations corresponding with those in the sash, the dotted
lines indicating the valve or slide so adjusted as to cover or close the perforations in
the sasb.
It will be obvious that according to my arrangement facility is afforded for the
effective ventilation of apartments and other places, as provision is made for a
perfect circulation of air in such apartment or place by forming channels for the
admission of fresh air and for the egress of vitiated air, whilst at the same time the
occupants are not exposed to draughts or to the direct impingement of the currents
of air, by reason of such currents being deflected in the inanner herein-before
explained.
Having now described and particularly ascertained the nature of my said Inven-
tion, and the manner in which the same is or may be used or carried into effect, I
would observe in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, the combination of an adjustable opening or openings at the top
of a window with an opening or openings fitted with a deflector or deflectors at the
bottom of the said window for the purpose of obtaining an effective circulation of
air without occasioning draughts, substantially as herein-before described.
In witness whereof, I, the said George Scundamore, have to this my Specifi-
cation set my hand and seal, the Twenty-ninth day of November, One
thousand eight hundred and seventy-eight.
GEORGE SCUDAMORE. (L.S.)