A New or improved Sash Fastener.
Year: 1894

page_text: Date of Application, 13th Jan., 1894
Complete Specification Left, 31st Mar., 1894-Accepted, 19th May, 1894
A New or improved Sash Fastener.
We, JAMES PAUL and JOHN THOMSON PAUL, both of Grove Works,
Edinburgh, in the County of Midlothian, Lamp Manufacturers, do hereby declare
the nature of this invention to be as follows:-
==
Our invention relates to a New or Improved Sash Fastener by means of which
certain advantages are obtained.
In carrying our invention into effect we attach to the lower rail of the upper
sash, by means of a flange or base plate or other convenient device, a box or
frame in or upon which is a hinged bolt maintained in its normal position by a
spring and adapted to operate in the manner hereinafter described.
To the upper rail of the lower sash, we attach, by means of a flange or base
plate or the like a somewhat similar box or frame adapted when the window is
closed to fit over or clasp the box or frame in or upon which is the bolt herein before
mentioned. To this box or frame, that is to say the one which is attached to the
lower sash we hinge or otherwise attach a releasing device whose function will be
presently disclosed.
"
We shall hereinafter distinguish between the two boxes or frames before
mentioned by styling that which is attached to the upper sash the "inner box
and that which is attached to the lower sash the "outer box."
"
To understand the action of our invention let us assume that the two boxes are
so attached to their respective sashes that in the act of closing the window the
two boxes approach one another in a vertical line, until when the window is shut
the inner box will be nested within the outer box. The bolt of the inner box
normally protrudes beyond the margin of the said inner box or at least
beyond that part thereof which nests within the outer box. As the outer box
passes over the inner box the bolt is thereby pressed inwards against the action of
the spring until when the window is shut the head of the bolt clears the top of
the outer box and is forced outwards by its spring over the said box and
retains the two boxes and consequently the two sashes locked together.
When it is desired to open the window the releasing device is brought into
action. It is moved by means of the hand so as to press the head of the bolt
inwards or in such direction as to free it from the outer box. The window may
then be opened in the usual manner, either by raising the lower sash when the
outer box will rise over the inner one, or by lowering the upper sash when the
inner box will descend from within the outer one.
This Oth daw of Ta100
0
COMPLETE SPECIFICATION.
A New or Improved Sash Fastener.
We, JAMES PAUL and JOHN THOMSON PAUL, both of Grove Works,
Edinburgh in the County of Midlothian, North Britain, Lamp Manufacturers, do
hereby declare the nature of this invention and in what manner the same is to be
[Price 8d.]

page_text: performed to be particularly described and ascertained in and by the following
statement:-
Our invention relates to a new or improved fastener or catch for windows and
other like purposes by means of which certain advantages are obtained.
In order that our invention may be properly understood and readily carried into
effect we have hereunto appended an explanatory sheet of drawings drawn to an
enlarged scale, in the several figures of which corresponding parts are marked
with the same letters of reference.
Figure 1 is a side view of our improvements showing the upper sash of the
window lowered.
Figure 2 is a similar view with the two sashes locked together.
Figure 3 is a plan of Figure 2.
In carrying our invention into practice we attach to the lower rail A of the
upper sash by means of a flange or base plate B or other convenient device a box
or frame C, in or upon which is a hinged bolt D, maintained in its normal position
by a spring E and adapted to operate in the manner hereinafter described.
To the upper rail F of the lower sash we attach by means of a flange or base
plate G or the like a somewhat similar box or frame H adapted when the window
is closed to fit over or clasp the box or frame C. To the box or frame H we
hinge or otherwise attach a lever I or other releasing device whose function will
be presently described.
The action of our invention is as follows:-As will be seen from Figure 1 the
two boxes C and H are so fixed to their respective sashes A and F that in the act
of closing the window the two boxes approach one another in a vertical line until
when the window is shut the inner box C will be nested within the outer box H.
The bolt D of the inner box C_normally protrudes beyond that part thereof
which uests within the outer box H. As the outer box H passes over the inner
box C the bolt D is thereby pressed inwards against the action of the spring E
until when the window is shut the head of the bolt D clears the top of the outer
box H and is forced outwards by its spring E over the said box H, and retains the
two boxes C and H, and consequently the two sashes locked together as seen more
particularly in Figure 2.
When it is desired to open the window, the lever I or other releasing device is
brought into action. It is moved by means of the cord J or by the haud so as to
press the head of the bolt inwards or in such direction as to free it from the outer
H. The window may then be opened in the usual manner either by raising
the lower sash F, when the outer box H will rise over the inner one C, or by
lowering the upper sash A, when the inner box C will descend from within the
outer one.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
A fastener or catch for window sashes, and other like purposes, constructed and
operating in the manner substantially as herein before described and shown on the
accompanying sheet of drawings.
נית
ليوم
1
1
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicants' Agents.