IMPROVEMENTS IN WINDOW SASHES
Year: 1879

page_text: LETTERS PATENT to William Speirs Simpson, of Battersea, in the County of
Surrey, for the Invention of "IMPROVEMENTS IN WINDOW SASHES."
1
تيمم
PROVISIONAL SPECIFICATION left by the said William Speirs Simpson at
the Office of the Commissioners of Patents on the 20th May 1879.
WILLIAM SPEIRS SIMPSON, of Battersea, in the County of Surrey.
MENTS IN WINDOW SASHES."
"IMPROVE-
The main object of my improvements in window sashes is to facilitate the
cleaning of the outside of the window panes from the inside of the apartment, and
thereby to prevent the accidents resulting from servants standing outside of
windows in order to clean them; but it will be found also to provide an excellent
means of ventilating the apartment with a double and indirect draught
My Invention consists in so constructing the sash that while it is free.to slide up
and down in the sash frame in the ordinary manner it may also when desired be
pivoted to a horizontal position or be inclined to any required angle.
For this purpose I propose to set or carry both top and bottom sash upon longi-
tudinal pieces, hereinafter termed "slides," held by the ordinary bead in the sash-
frame, and to which are attached the sash cords.
I propose to cut the surfaces of the sashes and of the slides which come in con-
tact when the sash is vertical in such a manner that they partly lap upon each
other, so as to form a stop and make a close and nearly air tight joint.
I propose to lock the sashes to the slides by any suitable catch in such a
manner that the whole will move up and down in the sash frame like an ordinary
sliding sash, but so that when it is desired to incline the sash to an angle, whether
for the purpose of cleaning the glass or for ventilation, it will only be necessary to
slightly raise or lower the sash, accordingly as it is the top or the bottom one, to be
enabled to push back or release these catches, thereby unlocking the sash from its
slides and permitting it to be turned on its bearings to any desired degree of
inclination by simply pushing the sash outward from the bottom or drawing it
inward by the top.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Speirs Simpson in the Great Seal Patent Office on the
18th November 1879.
WILLIAM SPEIRS SIMPSON, of Battersea, in the County of Surrey. "IMPROVE-
MENTS IN WINDOW SASHES."
The main object of my improvements in window sashes is to facilitate the
cleaning of the outside of the window panes from the inside of the apartment, and
thereby to prevent the accidents resulting from servants standing outside of
windows in order to clean them; but it will be found also to provide an excellent
means of ventilating the apartment with a double and indirect draught.
My Invention consists in so constructing the sash that while it is free to slide
up and down in the sash frame in the ordinary manner it may also when desired
be pivoted to a horizontal position or be inclined to any required angle.
My Invention will be readily understood by reference to the accompanying
Sheet of Drawing, upon which,—
Figure 1 represents a front view or elevation of a window with my improve-
ments applied thereto, the upper and lower sashes being partly opened in the usual
manner.
Figure 2 is a similar view, but represents the sashes in an inverted position,
Figure 3 being a cross section through the latter.
Figure 4 is a sectional plan of Figure 1.
Figure 5 illustrates the lower sash, the slides being removed.
Figure 6 is an end view of same, and
Figures 7 represent a front and end view of slide,
Similar letters of reference indicating similar parts in each of the Figures
respectively,
A being the upper sash; a, fillet or stop ;
B, lower sash; b, fillet or stop;
C, C, slides for sash A; c, fillet on same;
D, D, slides for sash B; d, fillet on same;
E, E, pivots or studs;
F, the bead;
G, frame;
H, H, flush bolts for locking sashes and slides;
I, I, pulleys for sash cords;
It will be seen that I set or carry both the top sash A and the bottom sash B
upon longitudinal pieces, which I term "slides" C and D, held by the ordinary
bead F in the sash frame G, and to which are attached the sash cords.
I cut the surfaces of the sashes A and B and of the slides C and D, which come
into contact when the sash is vertical, in such a manner that they partly lap upon
each other, so as to form a stop and make a close and nearly air tight joint.
I lock the sashes to the slides by the flush bolts H, H, or by any suitable catch,
in such a manner that the whole will move up and down in the sash frame G like
an ordinaay sliding sash, but so that when it is desired to incline the sash to an
angle, whether for the purpose of cleaning the glass or for ventilation, it will only
be necessary to slightly raise the sash B or lower the sash A to be enabled to push
back or release these catches H, H, thereby unlocking the sash A or B from its
slides C or D, and permitting it to be turned on its bearings, pivots, or studs, E, E,
to any desired degree of inclination by simply pushing the sash outward from the
bottom or drawing it inward by the top.
Having now described and ascertained the nature of my said Invention, and in
what manner the same is or may be performed, I would have it understood that I
do not confine myself to the exact details hereinbefore described and shown on the

page_text: Drawings, as such may be varied while retaining the essential part of my Inven-
tion, and that what,-
I claim as secured to me by the hereinbefore in part recited Letters Patent is,-
The combination of the "slides" C, C, and D, D, with the sashes A and B,
substantially as and for the purposes herein before specified.
In witness whereof, I, the said William Speirs Simpson, have hereunto set
my hand and seal, this Seventeenth day of November, in the year of our
Lord One thousand eight hundred and seventy nine.
W. S. SIMPSON. (L.S.)