Improvements in Sash Fasteners.
Year: 1892

page_text: Date of Application, 15th Sept., 1892
Complete Specification Left, 15th Feb., 1893-Accepted, 25th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Sash Fasteners.
I, THOMAS DIXON BROWN of 59 Heavitree Road, Plumstead, Kent, Gentleman,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved sash fastener, having for its object to
provide a means whereby the sash may be completely secured, rendering it
practically impossible to be opened from the outside.
In carrying out my invention, I provide an arm, pivotted to a plate fixed on the
lower bar of the upper sash, and capable of turning over on the lower sash. Stops
are provided to limit the motion of this arm in both directions, allowing it to turn
for about a right angle, so that it can lie either completely on the upper sash, or
project at right angles over the front of the lower sash.
To the free end of this arm is pivotted a second arm, turning in a vertical
direction, provided with a stop, preventing it being raised much above the
horizontal position, and a small button at its end, with a shank screwed into the
arm or otherwise fixed to it.
At the front of the lower sash is fastened a plate having two lugs, situated
opposite the pivot of the first mentioned arm.
The second arm, when the two arms have been turned over the top of the sash,
is turned down and pushed between these lugs, which grip it tightly springing a
little so as to allow it to enter. The plate carrying these lugs is also provided at
its other end with a small projecting piece at top, situated so that if the arms be
turned round to unfasten the sash, unless the second arm is raised clear above the
top of the sash, the button will catch on this projection, the head of the button
taking underneath it, effectually preventing the arms being turned further until
they have been turned back and the button raised.
The window cannot be opened by any instrument inserted between the sashes, as
it cannot turn it past the projection, even if it is not properly fixed between the
lugs above mentioned. A double security is thus provided, the second arm, when
the fastener is properly secured, being held by the lugs, and when only turned over
without securing, taking against the projection, if moved without being raised. A
small metal strip is fixed on the top of the lower sash, on which the arm rests, pre-
venting it rubbing the top of the sash and disfiguring it.
Dated this 15th day of September 1892.
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Sash Fasteners.
I, THOMAS DIXON BROWN, of 59 Heavitree Road, Plumstead, Kent, Gentleman,
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:
This invention relates to an improved sash fastener, having for its object to
provide a means whereby the sash may be completely secured, rendering it
practically impossible to be opened from the outside.
In carrying out my invention, I provide an arm, pivotted to a plate fixed on the
Pin 71

page_text: lower bar of the upper sash and capable of turning over the lower sash. Stops
are provided to limit the motion of this arm in both directions, allowing it to turn
for about a right angle, so that it can lie either completely on the upper sash or
project at right angles over the front of the lower sash. To the free end of this
arm is pivotted a second arm turning in a vertical direction, provided with a stop,
preventing it being raised much above the horizontal position, and a small button
at its end, with a shank, or a small hook shaped projection, screwed into the arm or
otherwise fixed to it. At the front of the lower sash is fastened a plate having two
lugs, situated opposite the pivot of the first mentioned arm. The second arm, when
the two arms have been turned over the top of the sash, is turned down and pushed
between these lugs, which grip it tightly, springing a little so as to allow it to enter.
The plate carrying these lugs is also provided at its other end with a small pro-
jecting piece at top, situated so that if the arms be turned round to unfasten the
sash, unless the second arm is raised clear above the top of the sash, the button or
hook will catch on this projection, the head taking underneath it, effectually pre-
venting the arms being turned further until they have been turned back and the
button or hook raised.
The window cannot be opened by any instrument inserted between the sashes, as
-it cannot turn it past the projection, even if it is not properly fixed between the lugs
above mentioned. A double security is thus provided, the second arm, when the
fastener is properly secured, being held by the lugs, and when only turned over
without securing, taking against the projection, if moved without being raised.
-A small metal strip is fixed on the top of the lower sash, on which the arm rests,
preventing it rubbing the top of the sash and disfiguring it.
A slightly modified construction of the above described arrangement is applicable
to French sashes, or those which open and close after the manner of a door. The
engaging arms are both mounted to move vertically, the second or outer arm being
pivotted to the first parallel to its pivot. A projecting plate is fixed to the other
sash, a little below the level of the pivot of the first arm, and when the sash is to be
fastened the arms are brought down over the projecting plate, the hook engaging
with it, if the arms are raised without moving the second arm out of position.
In order that the invention may be more clearly understood, reference is had to
the accompanying sheet of drawings in which
Fig. 1 is a front elevation, Fig. 2 a plan, and Fig. 3 a side elevation of the
fastener applied to ordinary sashes, and Fig. 4 a front view as applied to French
sashes.
A
A is the main arm of the sash fastener pivotted at a to the plate B fixed on one
of the sashes in Figs. 1, 2 and 3 on the lower rail of the upper sash in such a manner
that it can be turned over the lower sash or back, releasing it, as shown in dotted
lines in Fig. 2. A projection a¹ on the arm takes against a stop 6 on the plate B
when the arm is turned into operative position, so that its motion is limited.
second stop b¹ is placed on the plate B to prevent the arm being turned too far
back. The outer arm C is pivotted to A at c, a knuckle joint being provided and
a stop c' which allows the arm C to be raised to clear the projections, but prevents
it being turned too far back. A plate D is fixed on the second sash and serves to
retain the arm C in locked position by means of a projecting part. In Figs. 1, 2
and 3 this is done by means of two lugs E which grip the arm when it is pressed
. between them, springing slightly to allow of this being done. To prevent the arms
being turned back, releasing the sashes if the arm C is not secured, the latter is
furnished with a button or hook C which engages with a projecting plate d in
Figs. 1, 2 and 3 when the arm is turned, unless it is raised clear of the same. The
, window is thus secure from attempts to open from the outside even if not completely
fastened. A small projecting bar F is situated on the lower sash to prevent the
arms injuring the latter. The projecting part or post D¹ in Fig. 4 serves to secure
the arm C and engage with the hook C if the arm is raised. The unsecured
positions are shown in dotted lines in the various figures.

page_text: 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) A sash fastener, consisting of an arm pivotted to a plate on one sash and
having a second arm pivotted to it, with a button or hook at its end which engages
with a projecting plate on the second sash, the two arms being turned over the
second sash when the window is to be fastened, substantially as described and for
the purposes specified.
(2) In a sash fastener, the combination of two arms, one pivotted to a plate on
one sash, and the other pivotted to the end of the first arm, both arms being turned
over the other sash, the second hanging over the front, with a plate fixed to the
lower sash, furnished with lugs, which hold the second arm in position, and a
projecting plate which can engage with a hook or button on the said arm, and
retain the same in locking position, substantially as described and for the purposes
specified.
(3) In a sash fastener, the combination of pivotted arms A and C attached to the
lower bar of the upper sash, furnished with stops which limit their motion, the
arm C having a button or equivalent C', with a plate D on the lower sash, having
lugs E arranged to grip the arm C when the latter is turned over, and projecting
part d capable of engaging with the button C', substantially as and for the purposes
specified.
(4) The improved sash fastener constructed and operating substantially as
described and illustrated in Figs. 1, 2 and 3 of the drawings and for the purposes
specified.
3
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.