Improvements in and relating to Windows.
Year: 1899

page_text: Date of Application, 27th July, 1899
Complete Specification Left 26th Apr. 1900-Accepted 26th May. 1900
PROVISIONAL SPECIFICATION.
Improvements in and relating to Windows.
I, ARCHIBALD MCKINNON, Hartwood Cottage, Hartwood, Shotts, Lanarkshire,
Joiner, do hereby declare the nature of this invention to be as follows:-
1
This invention relates to improvements in window sash fixers and has for
its object to fix the position of the opening of a window sash at any given height,
to prevent, for example, the inmates of asylums from fully opening a window.
In accordance with one arrangement, I have a pivoted lever and bolt at the
back of the pulley style and a rack on the side of the sash, the bolt of the pulley
style fitting into the rack of the sash, under the influence of a spring. Access
cannot be obtained to the lever which operates the bolt unless by unscrewing the
batten rod, when by pressing down one end of the lever, the bolt at the other
end thereof is withdrawn from the rack in the sash so as to free the window.
this way the teeth of the rack act as stops so that by adjusting the position of
the bolt within the rack, the sash can be fixed at any desired height.
In
As a modification, the bolt with its lever and spring may be fitted within a
recess in the side of the sash, the rack being inside the pulley style; access being
had to the bolt as in the first case, by removing the batten rod.
Or the bolt may be operated, so as to adjust its position within the rack, or to
release the sash, by means of a key operated through a key hole provided in the
front of the sash, as in the case of the last referred to arrangement of the bolt and
rack; the key pressing back the lever and thus withdrawing the bolt from out of
the rack.
Datad
day of T..1., 1000
'
JOHNSONS,
Petitioner's Agents,
115, St. Vincent Street, Glasgow.
Improvements in and relating to Windows.
1, ARCHIBALD MCKINNON, formerly of Hartwood Cottage, Hartwood, Shotts,
Lanarkshire, but now of 53, Benview Street, Ruchill, Glasgow, Joiner, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:.
This invention relates to improvements in window sash fixers and has for its
object to enable the sash to be fixed at any given height, to prevent, for example,
the inmates of asylums from fully opening a window.

page_text: +
In the accompanying drawings hereunto appended and forming part of this
specification.
Fig. 1 is a front view, partly in section and
Fig. 2 a side view of the pulley stiles of a window, showing one method of
carrying out
my invention.
Fig. 3 is a view similar to Fig. 1 of a modification and
Fig. 4 is a perspective view of the fixer removed from the sash stile, Fig. 3.
Referring to.Figs. 1 and 2 of the said drawings, I employ a lever A fitted with
a bolt B which lever is pivoted at a to the lugs c of a plate C recessed into the pulley
stile D. The bolt B projects through the plate C, as shewn, and engages with a
rack E on the side stile of the sash, a spring e which acts on the back of the
lever A normally repelling the bolt outwards. Access cannot be obtained to
the lever which operates the bolt unless by unscrewing the batten rod H when a
key g can be rotated by means of the depending handle g¹ to withdraw the bolt
from the rack E, thus freeing the window and allowing it to be raised or lowered
at will.
The teeth of the rack E act as stops so that by adjusting the position of the
bolt within the rack the sash can be fixed at any desired height. A fixer thus
constructed is employed with both the upper and lower sashes but each arranged
reversely to the other as shewn, and in order that both bolts may
be withdrawn at once, avoiding the necessity of actuating both in-
dividually. I may fit the stock of each of the keys with a crank or arm H¹ and
connect them together by a rod or link h, so that motion imparted to the one key
is transmitted to the other. The batten rod may be removed entirely, or a portion
only may be removed, and a lock of any suitable form may also be employed to
prevent the said batten rod's unauthorised removal. The sectioned portion of
the upper half of Fig. 1 is taken through the pulley stile Fig. 2 in proximity with
the fixer, and the sectioned portion of the lower half of Fig. 1, through the pulley
stile at a point behind the batten rod.
As a modification, the bolt with its lever and spring may be fitted within a
recess in the side of the sash, the rack being provided inside the pulley stile.
Such an arrangement is illustrated in Fig. 3. In this case the bolt may be
actuated by a key, not shewn, passed through a keyhole in the sash so arranged
that it is covered by the batten rod, necessitating the latters removal before the
key can be inserted; or the keyhole may be situated in a position similar to that
shewn, this latter arrangement being specially applicable for windows in ordinary
houses where it is desired to prevent the window from being opened beyond a
certain height from without.
Fig. 4 shows the fixer, removed from the sash Fig. 3.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. The means whereby window sashes may be fixed or secured at a given
height, or prevented from being fully opened from without or from within by
unauthorised persons, substantially as herein before described and shown in the
accompanying drawings.
2. The combination of the pivoted lever A and bolt B, secured in the pulley
stile, with the rack E, secured in the stile of the window sash, the said bolt
being normally repelled into the rack by a spring
rack by a key, substantially in the manner as herein before described and shewn
e and disengaged from the
in the accompanying drawings.
3. Arranging the lever or handle g of the actuating key g within a recess in
the pulley stile, so that access cannot be obtained thereto without removing the
batten rod H, substantially as and for the purpose herein before described and
shewn in the accompanying drawings.
4. The modified means whereby window sashes may be fixed or secured at a

page_text: given height for the purpose described, consisting of the pivoted lever A and
bolt B arranged within the sash stile, engaging with the rack E arranged within
the pulley stile and actuated by a key, the keyhole for which may or may not be
obscured by the batten rod H, substantially as herein before described and shewn
in Figs. 3 & 4 of the accompanying drawings.