Improved Means of Constructing Window-sashes for Obtaining Ventilation with Reduced Draughts.
Year: 1894

page_text: Date of Application, 23rd Jan., 1894
Complete Specification Left, 23rd Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improved Means of Constructing Window-sashes for Obtaining
Ventilation with Reduced Draughts.
We, THOMAS HOLLIDAY, Joiner, of 109 South Palmerston Street, and JOHN
SMALLMAN ROBSON, Solicitor, of 1 Argyle Terrace, both in South Shields in
the County of Durham, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improved means of constructing window-sashes for
obtaining ventilation with reduced draughts to effect which purpose we propose to
construct as an addition to or in combination with sashes whether new or old by
preference an extension to the ordinary sash which when the window is closed is
intended to lie in a specially constructed recess or case beyond the ordinary window
frame so that on opening or lowering or lifting or sliding the window as the case
may be the additional frame may proceed from its recess or space and come
opposite the ordinary window space.
This extension or frame we propose to cover with woven or perforated material
whether transparent or not such as silk perforated plating or gauze or perforated
glass or other suitable and equivalent material so that though the window may be
open to admit air it can only admit it through the woven or perforated material
aforesaid whereby any force of wind as well as dust and the like may in part be
prevented from entering the room or chamber.
In this manner greater convenience can be afforded and the invention is
applicable to window-sashes skylights or fanlights in public and private buildings
conservatories outhouses and similar situations.
Dated this 22nd day of January 1894.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.
COMPLETE SPECIFICATION.
Improved Means of Constructing Window-sashes for Obtaining
Ventilation with Reduced Draughts.
We, THOMAS HOLLIDAY, Joiner, of 109 South Palmerston Street, and JOHN
SMALLMAN ROBSON, Solicitor, of 1 Argyle Terrace, both in South Shields in
the County of Durham, 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 improved means of constructing window-sashes for
obtaining ventilation with reduced draughts to effect which purpose we propose to
construct as an addition to or in combination with sashes whether new or old by
preference an extension to the ordinary sash which when the window is closed is
intended to lie in a specially constructed recess or case beyond the ordinary window
frame so that on opening or lowering or lifting or sliding the window as the case
may be the additional frame may proceed from its recess or space and come
opposite the ordinary window space.
This extension or frame we propose to cover with woven or perforated material
whether transparent or not such as silk, perforated plating or gauze or perforated
glass or other suitable and equivalent material so that though the window may be
CD

page_text: open to admit air it can only admit it through the woven or perforated material
aforesaid whereby any force of wind as well as dust and the like may in part be
prevented from entering the room or chamber.
In this manner greater convenience can be afforded and the invention is
applicable to window-sashes skylights or faulights in public and private buildings,
conservatories, outhouses and similar situations.
We will more fully describe our invention with reference to the accompanying
drawings in which
Figures 1 and 2 show front elevations and Figure 3 a side view and in the
following description like marks of reference designate like parts.
Referring to the drawings it will be observed that we extend the ordinary sash s
of the window upwards above the cross-bar B and instead of glazing the extended
part formed by the frame B, B, B, B we cover it with perforated material (as
shown in Figure 2) such as perforated zinc or wire gauze or other like material as
above described.
We further arrange and construct beyond or above the ordinary window frame
or opening a recess or casing R in which the extension B, B, B, B, of the sash is
intended to lie when the window is closed as shown in Figure 1 but when the
window is partially lowered or opened as shown in Figure 2, then the aforesaid
extension of the sash with its perforated covering will be lowered also and in this
manner air can freely pass into the room through the perforated material to
ventilate it without causing too great a draught, while at the same time other
advantages accrue as above described.
By lowering the window below the level shown in Figure 2, the room or chamber
can be thrown open to the external air in the ordinary way, but the extension of
the sash with its perforated covering enables a medium amount of fresh air to enter
or go out of the room or chamber according to requirements.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The improvement in the construction of window sashes consisting in extending
the window sash and covering the extension with perforated material and in the
provision of a recess above or beyond the ordinary window to receive the extension
the several parts being arranged combined and adapted for use substantially as
herein set forth.
2. The improved means of constructing window sashes for obtaining ventilation
with reduced draughts substantially as herein set forth.
Dated this 22nd day of October 1894.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.