IMPROVEMENTS IN APPARATUS FOR REGULATING THE OPENING OF SLIDING WINDOWS.
Year: 1869

page_text: LETTERS PATENT to Alexander: Bartholomew, of No. 2, Queen's
Place, Great Western Road, Glasgow, in the County of Lanark,
for the Invention of "IMPROVEMENTS IN APPARATUS FOR REGULATING
THE OPENING OF SLIDING WINDOWS.".
Scaled the 13th August, 1869, and dated. the 18th February 1869.
PROVISIONAL SPECIFICATION left by the said Alexander Bartholomew
at the Office of the Commissioners of Patents, with his Petition, ou
the 18th February 1869..
I, ALEXANDER BARTHOLOMEW, of No. 2, Queen's Place, Great Western
Road, Glasgow, in the County of Lanark, do hereby declare the nature.
of the said Invention for "IMPROVEMENTS IN APPARATUS FOR REGULATING
THE OPENING OF SLIDING WINDOWS," to be as follows:-
The object of the improvements is that sliding windows may be frec
to be fully opened when required for cleaning or other purposes, whilst
the extent of their opening may be limited, when required, by the
application of stops adapted particularly to the prevention of burglaries..
For this purpose I apply a plate or plates, or surface or surfaces, to thic

page_text: side or sides of the upper sash, with holes tapped to receive a screw with
a square or other head adapted to receive a loose key, by which such
screw is placed in position, and when in position by acting on the upper
part of the lower sash to prevent the one from being raised and the
other from being lowered beyond a suitable distance,, which may be
varied by the position of the screw in the upper sash.
The Invention is also applicable to windows, sliding sideways, and the
screw may be passed into a female screw formed in the sash. By the
use of a moveable key to apply the screw the removal thereof through a
broken pane of glass is rendered the more difficult.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alexander Bartholomew in the Great Seal Patent
Office on the 17th August 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALEXANDER
BARTHOLOMEW, of No. 2, Queen's Place, Great Western Road, Glasgow,
in the County of Lanark, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of February, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year
of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Alexander Bartholomew, Her special licence
that I, the said Alexander Bartholomew, my executors, administrators,
and assigns, or such others as I, the said Alexander Bartholomew, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN APPARATUS FOR REGULATING THE OPENING OF SLIDING WINDOWS," upon the.
condition (amongst others) that I, the said Alexander Bartholomew,
my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and scals, should particularly
describe and ascertain the nature of the said Invention, and in what.
manner the same was to be performed, and cause the same to be

page_text: filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Alexander Bartholomew, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-
The object of the improvements is that sliding windows may be free
to be fully opened when required for cleaning or other purposes, whilst
the extent of their opening may be limited, when required, by the appli-
cation of stops, adapted particularly to the prevention of burglaries.
For this purpose I apply a plate or plates, or surface or surfaces, to the
side or sides of the upper sash, with holes tapped to receive a screw
with a square or other head adapted to receive a loose key, by which
such screw is placed in position, and when in position by acting on the
upper part of the lower sash to prevent the one from being raised and
the other from being lowered beyond a suitable distance, which may be
varied by the position of the screw in the upper sash.
The Invention is also applicable to windows sliding sideways, and the
screw may be passed into a female screw formed in the sash. By the
use of a moveable key to apply the screw the removal thereof through a
broken pane of glass is rendered the more difficult:
But that the Invention may be better understood, I will by the aid of
the accompanying Drawing proceed to describe means pursued by me in
carrying the same into effect.
DESCRIPTION OF THE DRAWINGS.
Figures 1 and 2 shew two views of apparatus arranged according to
the Invention; Figures 3 and 4 shew the same applied; Figure 3
shews the sashes of the window closed; Figure 4 shows the lower sash
open to the extent admitted by the use of the apparatus.
a, a, show plates, applied to the upper sash A, and carrying each a
stud b, which is formed with a screw stem b', so that by turning it in a
correspondingly formed screw socket a' in the plate a the outer end
of the stud may be caused to project from the face of the sash, A. over
the sash B, or it may be caused to be flush with the face of the sash A,
so as to admit of the sash B passing it freely according to the direction
in which the stud bis turued. The turning of the stud b is effected in

page_text: this instance by the use of a key c, the square end c¹ of which is adapted
to fit into the square recess 62 formed for it in the outer end of this
stud b. The form of the key may, however, be varied; and at Figure 6
another form of key is shewn adapted for use with the apparatus,
Figures 7 and 8, which otherwise is similar to that shown by Figures 1
and 2.
Figures 9 and 10 show by two views a modification of the apparatus.
In this case the stud is capable of being slided to and fro in the plate a,
and it is formed with a tail piece ³ on its inner end, which is guided
in any movement given to it by sliding on the two stems a², a, and these
stems are firmly fixed at one of their ends in the plate a and at the
other of their ends in the plate a³. Movement to the stud b is in this
case effected by means of a screw d, which is supported so as to be
capable of turning freely between the plates a and a³, whilst it may be
turned by the ends e', e', of a key e (Figure 11), passing into holes d', d',
formed for them in the head of the screw d, or by other suitable key.
The screw d passes through a hole tapped for it with a corresponding
female screw in the piece 63, so that in the turning of the screw d in
one direction the stud b will be caused to project, and by turning it in
the opposite direction it will be caused to recede.
Having thus described my Invention and means which I adopt in
carrying the same into effect, I would have it understood that I do not
confine myself to the precise arrangements shown so long as the position
of the stop is capable of being adjusted by screwing; the position of
the apparatus may also be varied to suit other kinds of sliding windows;
but what I claim is, the arranging apparatus for regulating the opening of
sliding windows, substantially as described.
In witness whereof, I, the said Alexander Bartholomew, have here-
unto set my hand and scal, this Tenth day of August, in the
year of our Lord One thousand eight hundred and sixty-
uinc.
ALEXANDER BARTHOLOMEW. (L.S.)