IMPROVEMENTS IN WINDOW SASH FASTENERS
Year: 1884

page_text: JOSEPH WALKER, Brassfounder Regent Parade, Birmingham in the County of
Warwick I Joseph Walker do hereby declare the, nature of my invention for
IMPROVEMENTS IN WINDOW SASH FASTENERS, to be as follows:-
My invention consists of an improved method of preventing the unfastening of
ordinary sash fasteners, by forcing back the leg or arm by means of a knife or
other similar instrument inserted between the window sashes.
I will describe my invention; An ordinary window sash fastener consists of two
principal parts; one part which is called the box, being fixed to the upper sash by
screwing the box plate to the said upper sash. The other part which is called the
leg or arm, is connected with the box plate by means of a pin or rivet passing
through one end of the said leg or arm, and also through the top of the box and
the said box plate. The said leg or arm being thus jointed or hinged to the box plate
in such a manner, that the said leg or arm can be pulled across the bottom sash by
means of a knob or handle fixed on the end of the said leg or arm, opposite to the
end by which it is jointed to the said box plate, to prevent this leg or arm being
forced back by means of an instrument inserted between the sashes, I fasten
on the box plate a bolt or slide in such a manner, that when the leg or arm of the
sash fastener is pulled forward in a circular direction, across the bottom sash, the
said bolt or slide is at the same time forced in a straight line at right angles to
the sash box across the space between the two sashes and held in this position
until the said leg or arm is moved back in the usual manner, when the said bolt or
slide will at the same time be moved back to its original position on the box
plate. Having thus generally described my invention I will more fully describe
my method construction.
10°
I will first describe the bolt or slide, this is a flat piece of metal of oblong shape,
the length of the said bolt or slide being about equal to the width of the box
plate and the width of the said bolt or slide somewhat less than its length. In
the centre of the said bolt or slide I make an oblong hole nearly as long as the
length of the bolt or slide, and slightly wider than the thickness of the pin by
which the berein described leg or arm is secured to the box plate. The two ends
of the said slide I leave considerably thicker than the centre part thus leaving
across the middle a slot at right angles to the said oblong hole: On the box plate
immediately in front of the pin or rivet which passes through the said box, I leave
a projecting peg of a size suitable to fit the oblong hole in the slide or bolt and to

page_text: allow the same to move backwards and forwards upon the said peg. On the bottom
or underneath part of the leg or arm at a short distance from the pin or rivet hole
in the direction of the herein described knob or handle, I leave a peg or projection
of a size and shape suitable to fit and work in the slot in the slide herein described.
Having now described the parts I will describe the manner in which they are
are put together, I place the said bolt or slide upon the box plate so that the peg on
the plate fits inside the oblong hole on the said bolt or slide pushing it back so
that one end of the bolt or slide is near to the back part of the sash box, and the
opposite end is level with the front edge of the box plate. The peg on the said
box plate being at the end of the oblong hole nearest to the front end of the said
bolt or slide; The middle part of the said slot hole being opposite or over the
rivet or pin hole in the box plate, I then place the end of the leg or arm of the
fastener in position so that the rivet or pin hole is opposite to the pin or rivet
holes in the top and bottom part of the Box, the peg on the bottom part of the
said leg or arm fitting into the slot in the bolt or slide, I then pass the pin or rivet
first through the hole in the top part of the box, then through the hole in the leg
or arm of the fastener, then through the centre of the oblong hole in the bolt or
slide, and lastly through the hole in the box plate fastening or securing the pin or
rivet in the usual way, The various parts being so constructed and put together
⚫that when the leg or arm is pulled forward in fastening the sashes the said bolt or
slide is at the same time forced across the space between the sashes by means of
the peg on the bottom or underneath part of the leg or arm pressing against the
peg or projection on the front end of the slide or bolt, and forced back in
unfastening the sash by means of the peg or projection on the end of the slide
nearest the back part of the slide. The said bolt or slide being secured to the
box by the pin or rivet passing through the oblong hole in the said bolt or slide,
The said bolt or slide being kept in a position at right angles to the sash box as it
moves backwards & forwards by means of the said pin or rivet together with the
peg on the box plate in front of the said pin or rivet.
When my invention is used for open ended sash boxes, that is, with the end
nearest to the joint or pin left open, I leave or fix on the side of the bolt or slide
nearest to the open end of a plate of metal of the size and shape of the open end
of the sash box so that when the sash fastener is opened or unfastened, that is,
when the said leg or arm and the said bolt or slide are in the sash box the end of
the sash. box will be closed by the said plate of metal on or fixed to the side of the
bolt or slide nearest to the open end of the box.
I further use the said plate of metal and prevent the leg or arm being forced
back and the fastener unfastened by means of a bent or hook shaped instrument
passing over the top of the said bolt or slide, It will be thus seen by my
invention that the bottom part and also the left side of the leg or arm of the sash
fastener is completely covered and protected by the said slide, when the window
sashes are fastened by my improved sash fasteners.
The advantages of my invention are, first that it is automatic in its action,
Secondly that it is applied to the ordinary sash fasteners with a leg or arm,
Thirdly greater security, and Fourthly cheapness of Production.
I claim, First. The making of ordinary. sash fasteners with a metallic slide
secured to the Box plate as herein described by the pin or rivet of the sash fastener.
passing through the said long hole in the slide. The said slide being kept in a
position at right angles or thereabouts to the sash box as it is moved backwards
& forwards, by means of the sash pin or rivet passing through the said long hole
together with a peg or projection on the box plate near to the said peg or rivet.
Secondly, I claim the making of sash fasteners with slides as herein described
.being thicker or having a projection at each end & so constructed that the said
slides will be forced forward by the said peg on the leg or arm of the sash fastener
where it is fastened and forced back into the box of the sash fastener by the
said peg. When the sash fastener is unfastened by the leg or arın being pushed
into the sash box.

page_text: Thirdly, I claim the making of sash fasteners with slides as herein described
having a plate of metal on the side nearest the jointed end of the sash fastener of
such a size and in such a position that when the sash fastener is open and the arm
or leg is in the sash box the said plate of metal or the slide will close up and form
an end to the sash box, also, that when the said leg or arm is pulled forward &
closed the said plate will cover the side of the said leg or arm nearest the open end
of the sash box and prevent it being forced back by a knife or other instrument
forced between the window sashes.
Improvements in Window Sash Fasteners.
I JOSEPH WALKER of Regents Parade Birmingham, in the County of Warwick
Brass Founder, do hereby declare the nature of my invention for IMPROVEMENTS
IN SASH FASTENERS, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
―
My Invention is applicable to the ordinary Sash fastener which consists of a
plate or box, screwed to the top sash by means of screws passing through the said
plate to the meeting bar for the purpose of acting as a bearing to the arm or lever
which fastens into the catch the said catch being screwed to a suitable plate to the
meeting bar of the bottom sash. My Invention consists of a method of operating
a sheath (or slide bolt) which is drawn across the joint between the two sashes by
means of a pin or-equivalent devise attached to the lever arm the said sheath being
for the purpose of preventing the sash fastener from being operated on from the
outside by means of a knife or other like instrument when inserted between the
two sashes.
In the accompanying drawings
Fig. 1 is a plan and shews the fastener fastened.
Fig. 2 is a plan & shews the fastener unfastened.
Fig. 3 is a section through the pivot.
Fig. 4 is a side elevation.
In Fig. 1 where the fastener is fastened it will be observed that the sheath A
overlaps the joint between the two sashes and in Fig. 2 which shews the fastener
unfastened it will be observed that the said sheath A is free of the two sashes thus
enabling them to be opened.
The said sheath A is constructed and operated on as follows. It is preferably
made out of a piece of flat wrot metal turned up at the side for the purpose of
protecting the lever arm and also turned up or thickened at the two ends for the

page_text: purpose of enabling the pin B on the arm to operate it, it is kept in position and
made to slide in a straight line preferably at right angles to the joint between the
two sashes by means of the pin or pivot C of the lever arm and by means of a
projection or pin D in the plate the said sheath being slotted at E for the purpose
of allowing it to slide between the two pins or pin and projection C & D as
herein before stated.
•
Thus it will be perceived that the sheath moves with the arm as the arm is
drawn across the two sashes the pin B works against the raised or turned up ends
of the sheath A and so causes the said sheath to work, and overlaps the joint of
the two sashes & prevent the same from being opened as herein before described,
and as the fastener is pushed back the said pin causes the sheath to move with it
and free.itself of the bottom sash when the window may be opened.
The object and advantage of this invention are additional security combined
with simplicity of action and economy of production.
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 Sheath operated on by means of a pin or peg on the lever arm working against
the bent up or projecting edges of the sheaf and guided so that it will work in the
right direction by means of the pin which serves as a pivot for the lever arm, and
a pin or projection on the plate in combination with a slot in the sheath as
substantially set forth.
2. A Sheath made and operated on as hereinbefore described and illustrated by
the accompanying drawings.