IMPROVEMENTS IN WINDOW-SASH FASTENINGS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said Edwin Robert Wethered at
the Office of the Commissioners of Patents on the 9th January 1882.
EDWIN ROBERT WETHERED of Woolwich in the County of Kent. "IMPROVEMENTS
IN WINDOW-SASH FASTENINGS."
The object of this Invention is to provide a simple and efficient fastening for
window sashes which cannot be opened from the outside and which when fastened
will hold the window sashes firmly together.
The part of the fastening which is to be secured to the top rail of the lower
window sash carries a bolt somewhat similar to an ordinary door bolt which can
be turned and slid backwards or forwards horizontally at right angles to the
window sashes. The end of the bolt has a projection or projections standing out
sidewise from it so as to form an oblong head at its end.
The part of the fastening which is to be secured to the bottom rail of the upper
sash is formed with a metal plate standing up vertically from the rail of the
window sash-In this plate is an oblong slot for the end of the bolt before
mentioned to pass through.
When the bolt is drawn back a pin projecting from it enters a horizontal slot
in the casing within which the bolt slides and the head of the bolt is then in a
line with the slot in the plate carried by the upper sash-When the bolt is thrust
forwards to lock the sashes together the head of the bolt passes through the slot
and when a partial turn is given to the bolt the projecting ends of the head come
against the back of the plate and the bolt is so locked. In order that the sashes
may be drawn towards one another at the same time that the bolt is locked inclines
inay be formed at the end of the casing within which the bolt slides for projections
at the tail end of the bolt to bear against.-In this way the bolt as it is turned
after being pushed forward will also be somewhat drawn backwards and as the
head of the bolt then bears against the back of the slotted plate in the upper sash

page_text: the two sashes will be drawn together-or the incline might be at some other
part of the casing of the bolt or upon the back of the slotted plate on the upper
sash. The tail end of the bolt is formed with a knob or handle by which it can be
turned and moved backwards or forwards as above described.
If the plate which is secured to the upper sash is made a few inches in height a
second slot may be formed in the upper part of the plate this would allow of the
windows being locked when partly opened.
The bolt fastener might also be made so as automatically to fasten the sashes
whenever they are closed. To effect this the bolt might be thrust forwards by a
spring and when drawn back the bolt might be held from being thrust forward by
the spring by its guide pin being turned into a small vertical slot branching out
from the rear end of the horizontal guide slot in the casing-When the sashes
were closed a projection on the part of the fastener carried by the upper sash
might strike against the head of the bolt and turn the bolt so as to withdraw the
guide pin from the small vertical branch slot the spring would then press the bolt
forwards and cause it to lock the sashes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edwin Robert Wethered in the Great Seal Patent Office on the
8th July 1882.
EDWIN ROBERT WETHERED of Woolwich in the County of Kent. "IMPROVEMENTS
IN WINDOW SASH FASTENINGS."
The object of the Invention is to provide a simple and efficient fastening for
window sashes which cannot be opened from the outside and which when fastened
will hold the window sashes firmly together.
The part of the fastening which is to be secured to the top rail of the lower
window sash carries a bolt somewhat similar to an ordinary door bolt which can be
turned and slid backwards or forwards horizontally at right angles to the window
sashes. The end of the bolt has a projection or projections standing out sidewise
from it so as to form an oblong head at its end.
The part of the fastening which is to be secured to the bottom rail of the upper
sash is formed with a metal plate standing up vertically from the rail of the window
sash. In this plate is an oblong slot for the end of the bolt before mentioned to
pass through.
When the bolt is drawn back a pin projecting from it enters a horizontal slot in
the casing within which the bolt slides and the head of the bolt is then in a line with
the slot in the plate carried by the upper sash. When the bolt is thrust forwards
to lock the sashes together the head of the bolt passes through this slot and when a
partial turn is given to the bolt projecting ends of the head come against the back
of the plate and the bolt is so locked. In order that the sashes may be drawn
towards one another at the same time that the bolt is locked inclines may be
formed at the end of the casing within which the bolt slides for projections at the
tail end of the bolt to bear against. In this way the bolt as it is turned after
being pushed forward will also be somewhat drawn backwards and as the head of
the bolt then bears against the back of the slotted plate in the upper sash the two
sashes will be drawn together-or the incline might be at some other part of the
casing of the bolt or upon the back of the slotted plate on the upper sash. The tail
end of the bolt is formed with a knob or handle by which it can be turned and
moved backwards or forwards as above described.
If the plate which is secured to the upper sash is mado a few inches in height a
second slot may be formed in the upper part of the plate this would allow of the
windows being locked when partly opened.
The bolt fastener might also be made so as automatically to fasten the
sashes whenever they were closed. To effect this the bolt might be thrust
forwards by a spring and when drawn back the bolt might be held from being
thrust forward by the spring by its guide pin being turned into a small vertical
slot branching out from the rear end of the horizontal guido slot in the casing.
When the sashes were closed a part of the fastener carried by the upper sash might
strike against the head of the bolt and turn the bolt so as to withdraw the guide
pin from the small vertical branch slot the spring would then press the bolt forwards
and cause it to lock the sashes.
In the Drawings hereunto annexed I have shown a sash fastener formed as above
described.
At Figure 1 I have shewn the two parts of the fastener secured the one to the
bottom rail of the upper window sash and the other to the top rail of the lower
window sash. In this Figure the two parts of the fastener are shewn to be locked
together. Figure 2 is a similar view of the fastener unlocked. Figures 3, 4 and 5

page_text: shew a plan, side view and end view of the locking bolt and the casing which
carries it. Figures 6, 7, and 8 shew a side view end view and plan of the other
part of the fastener.
The casing carrying the locking bolt shewn at Figures 3, 4 and 5 is fixed to the
top rail of the lower sash whilst the other part of the fastener shewn at Figures 6, 7
and 8 is fixed to the bottom rail of the top sash.
In the Drawing the bolt is shewn as pressed forward by a spring so that it may
always be ready to lock tho window automatically whenever the window is
closed.
A is the casing containing the locking bolt. B is the locking bolt-it passes
through holes in the ends of the casing and can be slidden endwise through these
holes and also turned in them. At one end it is provided with a handle B₁ by
which it can be turned and drawn backwards. At the opposito end it is formed
into a T shaped head B². The stem of the bolt is shewn to be surrounded by a
coiled spring C which tends to thrust the bolt forwards. D is a pin projecting
outwards from the bolt B it enters a slot E cut in the casing A.-One portion of
the slot is made longitudinally of the casing. When the pin projecting from the
bolt is in this portion of the slot the head of the bolt is horizontal and in
position to pass through the slot in the other part of the fastener. At each end of
the longitudinal portion of the slot is a transverse slot which allows of the bolt
being turned at either end of its traverse.-When the bolt is drawn back and
turned so that its pin B enters the transverse slot E' the bolt is retained in its
backward position and cannot be thrust forward by the spring-the head of the
bolt is then in an inclined position. When the window is shut the lower arm of
the head of the bolt strikes against the part of the fastener which is secured to the
lower rail of the upper sash and the bolt is thereby turned into a horizontal
position it can then be thrust forward by the spring and so it automatically locks
the window whenever it is closed.-By then turning the bolt so that the pin D
passes into the transverse slot, E² the two sashes will be drawn together as the
two arms of the head of the bolt then act against inclined surfaces G. G. formed
above and below the slot in the portion of the fastener which is fixed to the upper
sash and through which the head of the bolt is passed-the construction of the
part of the fastener which is fixed to the upper sash is clearly shewn at Figures
6. 7. and 8.
In place of the handle B' being at the rear end of the bolt the pin D might be
prolonged outwards and formed into a handle. A cord might also be connected to
the handle so that the bolt might be drawn back and the window unfastened by
pulling upon the cord.
The sash fasteners are not required to bo mado self fastening they might be
made without the spring C for thrusting the bolt forwards the transverse slot E', in
the bolt casing would then not be required.
Having thus described the nature of my Invention and the manner of performing
the same I would have it understood that I clain the construction of window
sash fastenings substantially in the manner herein before described.
In witness whereof I the said Edwin Robert Wethered have hereunto set
my hand and seal this Seventh day of July in the year of our Lord One
thousand eight hundred and eighty two.
E. R. WETHERED. (L.S.)