Improvement in or in connection with Window Sash Fasteners.
Year: 1897

page_text: Date of Application, 11th Sept, 1897
Camino Cannifiention Loft 47th Mar 1808 Accented 20th May 1898
PROVIDIONAL
DI MULTICATION.
Improvement in or in connection with Window Sash Fasteners.
I, ARTHUR EDWARD LAING, of Blackman Lane, Leeds, in the County of York,
Commercial Traveller, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to provide means for preventing the sash
fasteners of windows from being unfastened from the outside.
The majority of sash fasteners consist of a horizontal lever (hereinafter for the
sake of brevity termed the sash lever) hinged to the bottom bar of the top outer
window pane frame and of a horizontal slide with horizontally curved top piece,
attached to the top bar of the bottom inner window pane frame. With this
arrangement it is possible without much difficulty, by the insertion of an ordinary
table knife in the slit between the two aforesaid bars, to push back the sash lever
so as to unfasten the window.
To prevent this being done I provide an attachment for locking the sash lever
in position when the window is fastened, and which locking attachment can only
be operated to unlock the sash lever, from the inside. This locking attachment
consists of an attachment piece which is screwed to the inner sash bar, i.e. the top
bar of the bottom window pane frame, and which attachment piece is provided
with a raised portion flat on the top. A horizontal hook, or lever bent horizontally
at the end, is hinged to the just mentioned raised portion of the attachment piece
by means of a pin or screw pin, screwed into the raised portion of the attachment
piece.
When the sash lever is pulled forward into position to fasten the window, the
said horizontal hook is pushed back, so that the hooked or bent end of the latter
is placed across the vertical pin or knob of the sash lever, and the latter cannot
then be pushed back to unfasten the window, until the horizontal hook is pulled
back from covering or blocking the motion of the sash lever. To lighten the
attachment piece the under side is formed hollow.
D
7
a
1008
Improvement in or in connection with window Sash Fasteners.
I, ARTHUR EDWARD LAING, of Blackman Lane, Leeds, in the County of York,
Commercial Traveller, do hereby declare the nature of this invention and in what
[Price 8d.]

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The object of this invention is to provide means for preventing the sash
fasteners of windows from being unfastened from the outside.
The majority of sash fasteners consist of a horizontal lever, (hereinafter for the
sake of brevity termed the sash lever), hinged to the bottom bar of the top (outer)
window pane frame; and of a horizontal slide, with a horizontal curved top piece,
attached to the top bar of the bottom (inner) window pane frame. With this
arrangement it is possible without much difficulty, by the insertion of an
ordinary table knife, or similar instrument in the slit between the two aforesaid
bars, to push back the sash lever, so as to unfasten the window.
To prevent this being done I provide an attachment for locking the sash lever
in position, when the window is fastened; and which locking attachment can
only be operated to unlock the sash lever, from the inside. This locking attach-
ment consists of an attachment piece, which is screwed to the inner sash bar, i.e.
the top bar of the bottom frame; and which attachment piece is of a sufficient
height, or is provided with a raised portion, having a flat top. A horizontal hook,
or loop; or a lever bent horizontally at the end, is hinged to the upper or raised
part. of the attachment piece, by means of a pin or screw inserted or screwed
through the same. The said pin or screw may be inserted vertically or
horizontally, so that the hook, loop, or lever moves in a horizontal or vertical
plane. I consider the former much the better arrangement.
When the sash lever is pulled forward into position to fasten the window, the
said hook loop or lever is pushed back, (down when the hinge pin or screw is
horizontally inserted), so that the hook or bent end of the loop or lever is placed
across the vertical pin or knob of the sash lever, (or across the sash lever itself);
and the sash lever cannot then be pushed back to unfasten the window, until the
hook, loop, or lever is pulled back from covering or blocking the motion of the
sash lever.
To lighten the attachment piece, the same may be made hollow.
And in order that my invention and the manner in which the same is to
be performed may be more readily and clearly understood, I have annexed hereto
the accompanying drawing, illustrating my invention.
Fig. 1 is a plan, and Fig. 2 is a front elevation illustrating my sash fastener
locking device, in which the aforesaid attachment piece is formed with a raised
part, to which the aforesaid bent lever is hinged.
Fig. 3 is a plan, and Fig. 4 is a front elevation, with the attachment piecé
formed of sufficient height, and shewn in section on line A B of Fig. 3.
Fig. 5 is a perspective view of the under side of a similar attachment piece to
that shewn in Figs. 3 and 4, but formed hollow.
Fig. 7 is a plan, and Fig. 8 is a cross elevation, in which a loop is used in place
of a lever; and
Fig. 6 is a perspective view looking down on the top of a bent lever.
In all the figures the same reference letter refers to the same or corresponding
part.
a is the ordinary sash lever, and the knob or handle of the same. c is the
horizontal slide with curved top piece.
d is the attachment piece, secured to the inner sash bar, by separate screws e, as
illustrated in Figs. 1 and 2; or as shewn in Figs. 3 and 4, by the vertical hinge
pin f. In the latter case the base of the attachment piece is preferably provided
with steady pins or teeth g to prevent rotation
h is the bent lever or hook, preferably pivotted to the vertical hinge pin, so
as to be capable of being moved horizontally between the positions indicated
respectively by the full and dotted lines h in Fig. 3. This lever may however,
though less suitably, be hinged about a horizontal hinge pin, screwed into the

page_text: attachment piece d, so as to be capable of being moved in a vertical plane, as
indicated by the dotted lines in Figs. 3 and 4.
Instead of a bent lever or hook, a strong wire loop h₁, see Figs. 7 and 8, may
be employed; in which case the axis of movement is horizontal, the loop passing
over and locking the underside of the knob b.
I am aware that prior to my inventon a short hnged blocking lever and spring
or a spring lever catch has been employed to prevent the unfastening or moving
of the sash lever; but such have been capable of being themselves pushed and
held aside by a bent wire pushed up through the slit between the sash bars, and
are consequently not effectual; I do not therefore make a claim generally for a
hinged blocking lever, but:-
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. A device for locking window sash fasteners consisting of an attachment piece
secured to the inner sash bar and a hook or bent lever or loop so hinged to the
said attachment piece that it can be moved over or across the sash lever or handle
of the sash lever locking or holding the sash lever in position and drawn back
to release the sash lever substantially as herein set forth.
2. The locking device for window sash fasteners consisting of the attachment
piece secured by screws e to the inner sash bar and the hook or bent lever h
hinged to the attachment piece by the vertical pin screw f substantially as set
forth and illustrated in Figs. 1 and 2.
3. The locking device for window sash fasteners consisting of the attachment
piece secured to the inner sash bar by a single vertical pin screw f and the hook
or bent lever h substantially as set forth and illustrated in Figs. 3 and 4.
4. The construction of the attachment piece d for the hinged hook or lever h
with steady pins or prongs, g, wehreby only one screw f is required for securing
the attachment piece and hingeing the hook or lever thereto substantially as set
forth and illustrated by Figs. 5 and 4.
5. The modification of the subject matters of Claims 2 and 3 in which the hook
or lever h is hinged and secured to the attachment piece d by a horizontal pin or
screw.
6. The locking device for window sash fasteners consisting of an attachment
piece & secured to the inner sash bar and the loop h₁ hinged to the said attachment
piece substantially as set forth and illustrated in Figs. 7 and 8.
Untad thin 15th da, of Vanch 1000
J. CLARK JEFFERSON,
30, Park Row, Leeds, Agent for Applicant.