An Improved Method of Constructing Windows.
Year: 1896

page_text: Date of Application, 1st May, 1896
Complete Specification Left, 30th Jan., 1897-Accepted, 27th Mar., 1897
PROVISIONAL SPECIFICATION.
An Improved Method of Constructing Windows.
I WILLIAM THOMPSON of No. 51 Cromwell Street Mount Pleasant Gateshead
in the County of Durham Joiner do hereby declare the nature of this invention to.
be as follows:-
A method of constructing windows whereby the necessity for sash weights is
done away with and whereby they may be more easily cleaned and glazed.
The means by which this is effected are as follows:-
One end of a flexible sash cord chain wire or rope of steel copper or other
suitable material is fastened to each side of the lower sash. The other end thereof
is passed over an axle pulley at or near the top of the pulley jamb round a pulley
fixed inside the window frame over another axle pulley at or near the top of the
window frame and fastened to the corresponding side of the upper sash.
The material of which such cord chain wire or rope is composed should be of a
comparatively unstretchable nature.
By this method the two sashes balance each other and when the lower sash is
raised the upper descends and vice versa.
The portion of the staff bead or the parting bead along the frame sill may be
made of a suitable depth to allow the top sash to be lowered for ventilation
purposes without allowing air to come in at the bottom of the lower sash.
In addition the frame of each sash may be constructed in two or more portions.
An outer portion or complete sash frame which forms the sliding sash and an inner
portion or portions in the form of a door or doors and opening inwards hung at
either the right or left hand side (or at both sides and opening in the centre) upon
hinges or pivots.
Dated this 30th day of April 1896.
WILLIAM THOMPSON.
COMPLETE SPECIFICATION.
An Improved Method of Constructing Windows.
I, WILLIAM THOMPSON, of No. 51 Cromwell Street, Mount Pleasant,
Gateshead, in the County of Durham, Joiner, 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:-
My invention relates to window sashes and frames and comprises the improve-
ments hereinafter set forth.
An important feature of my said invention consists in so constructing my
improved window that the necessity for the use of sash weights will be obviated,
and the construction thereof not only greatly simplified thereby, but the cost also
reduced. My improvements, moreover, admit of the window being cleaned and
glazed with greater facility.

page_text: In the accompanying drawings I have shown how my said invention can be
conveniently and advantageously carried into practice.
Figure 1 is an elevation showing my improved window looking from the
interior,
Figure 2 is a similar view looking from the exterior,
Figures 3 and 4 are vertical sections, and
Figures 5 and 6 are transverse sections showing details of construction herein-
after described.
Like letters indicate corresponding parts throughout the drawings.
A indicates the frame of the window, and B the top sash, and B' the lower sash
thereof. a, a are sash cords, chains, wires, or ropes, of steel or other suitable
material possessing sufficient flexibility and nonliability to stretching, one extremity
of each of which cords is fastened to each side of the lower sash B₁ and the other
end of which is passed over a pulley 6 situated at or near the top of the pulley
jamb, round a second pulley e fixed inside the window frame, over another or third
pulley d at or near the top of the window frame and is finally fastened to the
corresponding side of the upper sash B.
It will be seen that the two sashes will thus balance each other and that when
the lower sash is raised the upper one will descend and vice versa. The friction due
to the cord, chain, wire, or rope passing over the three pullies will be sufficient to
allow for slight inequalities in the weight of the two sashes.
In order to allow the top sash to be lowered for ventilating purposes without
allowing air to come in at the bottom of the lower sash, I may form that portion of
the staff bead or the parting bead along the frame sill of a suitably increased
depth.
To enable the windows to be more easily reached for cleaning, glazing and like
purposes, or opened to more completely ventilate the apartment, I may so construct
each of the sashes that they will form a combination of an ordinary sliding sash
and a casement window. For this purpose I provide in each of the said sashes one
or more casement frames B' hung on hinges e or on pivots adapted to open either
inwards or outwards or both in one or the other direction as may be desired.
When two such hinged frames are arranged in each sash they may be hinged at
each side and meet in the centre.
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. The method of hanging the sashes of windows whereby the sashes are caused
to balance each other by means of cords, chains, wires or ropes and pulleys
substantially as described.
2. A window constructed with complete outer or sliding sashes one or each of
which is fitted with one or more inner casement frames hung on hinges or pivots
substantially as described.
3. The improved window constructed substantially as described with reference
to the accompanying drawings.
Date: o
WILLIAM THOMPSON.