AN IMPROVED WINDOW FASTENING APPLICABLE TO SLIDING DOORS AND SASHES GENERALLY
Year: 1876

page_text: LETTERS PATENT to Joseph Palmer, of Handsworth, in the County of Stafford,
Machinist, for the Invention of "AN IMPROVED WINDOW FASTENING APPLICABLE
TO SLIDING DOORS AND SASHES GENERALLY."
Sealed the 28th July 1876, and dated the 14th February 1876.
PROVISIONAL SPECIFICATION left by the said Joseph Palmer at the Office
of the Commissioners of Patents on the 14th February 1876.
"
'AN
JOSEPH PALMER, of Handsworth, in the County of Stafford, Machinist.
IMPROVED WINDOW FASTENING APPLICABLE TO SLIDING DOORS AND SASHES,
GENERALLY."
The object of this Invention is by the means herein-after described to construct
such a secure fastening for window sashes and sliding doors generally that they
cannot be opened by unfair means, and especially to prevent the possibility of a
window sash being opened from the outside (as is now often the case) by a knife
or other instrument being introduced between the two sashes and forcing the
catch.
My improved fastening consists substantially of the following parts:-A tube or
socket is provided in which a bolt works, the normal tendency of this bolt being in
an outward direction, in consequence of being so forced by a helical or other
suitable spring provided; attached to the said tube or socket is a cross plate, by
means of which it is fastened or secured to the lower sash; the said bolt is fitted.
with a stud or. pin on the rear side of the said cross plate, and there being a
longitudinal slot cut in the rear end of the said tube, in which the said stud or pin
may travel backwards and forwards, the said bolt is withdrawn at pleasure; but as
will be readily understood, upon being released will go forwards (actuated by the
said spring) until it is stopped by the before named stud or pin coming against the
rear side of the said cross plate, and a vertical groove in the said tube or socket
being provided the said stud or pin is caused to take therein, and the bolt is thus
securely held in the position it has now assumed, the forward end of the said bolt
taking into the upper sash of the window or door.
As will be readily understood the mode of fastening just described is where my
Invention is applied to the middle of a window sash, this being the place where
such fasteners are usually placed. But I attach the greatest value to this Invention.
where my improved fastener is applied to either the left or right hand side (as may

page_text: be most convenient) of the lower sash of the window or door; in this case I attach
to the upper sash a metal plate fitted with certain perforations at convenient
intervals to receive the bolt of the fastener, and in this manner the door or window
to which my Invention is applied may be opened to any convenient distance and
secured there at pleasure.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Palmer in the Great Seal Patent Office on the 14th August
1876.
*
JOSEPH PALMER, of Handsworth, in the County of Stafford, Machinist. 'AN
IMPROVED WINDOW FASTENING APPLICABLE TO SLIDING DOORS AND SASHES
GENERALLY."
The object of this Invention is by the means herein-after described to construct
such a secure fastening for window sashes and sliding doors generally that they
cannot be opened by unfair means, and especially to prevent the possibility of a
window sash being opened from the outside (as is now often the case) by a knife
or other instrument being introduced between the two sashes and forcing the
catch.
My improved fastening consists substantially of the following parts:-A tube or
socket is provided in which a bolt works, the normal tendency of this bolt being in
an outward direction, in consequence of being so forced by a helical or other
suitable spring provided; attached to the said tube or socket is a cross plate, by
means of which it is fastened or secured to the lower sash; the said bolt is fitted
with a stud or pin on the rear side of the said cross plate, and there being a
longitudinal slot cut in the rear end of the said tube, in which the said stud or pin
may travel backwards and forwards, the said bolt is withdrawn at pleasure; but as
will be readily understood, upon being released will go forwards (actuated by the
said spring) until it is stopped by the before named stud or pin coming against the
rear side of the said cross plate, and a vertical groove in the said tube or socket
being provided the said stud or pin is caused to take therein, and the bolt is thus
securely held in the position it has assumed, the forward end of the said bolt
taking into the upper sash of the window or door.
As will be readily understood the mode of fastening just described is where my
Invention is applied to the middle of a window sash, this being the place where
such fasteners are usually placed. But I attach the greatest value to this Invention
where my improved fastener is applied to either the left or right hand side (as may
be most convenient) of the lower sash of the window or door; in this case I attach
to the upper sash a metal plate fitted with certain perforations at convenient
intervals to receive the bolt of the fastening, and in this manner the door or window
to which my Invention is applied may be opened to any convenient distance and
secured there at pleasure.
That my Invention may be better understood I have annexed Drawings thereof,
which I now proceed to describe.
Fig. 1 is a front elevation of a window the sashes of which are secured by
fastenings made according to my Invention.
A central fastening is shewn at a, and a separate view of the fastening, drawn
about full size, is shown in Fig. 2, where b is a hollow socket which is inserted into
a hole bored through the lower sash, and is secured by wood screws passing through
the flange c into the said sash. d is the nose of the sliding bolt, which when
pressed forwards by a helical or other spring within the socket b enters a corre-
sponding hole in the upper sash, thereby securing the two sashes together. The
internal details of this fastening are similar to those of the side fastening shewn
at e in Fig. 1, and shewn about full size in Figs. 3, 4, and 5, and the following
description will therefore apply to both kinds of fastenings.

page_text: Fig. 3 is a plan of a side fastening constructed according to my Invention, being
part of the upper sash and g. being part of the lower sash. The hollow, socket 6 has
side flanges h, h, whereby it is secured by means of wood screws to the top of the
lower sash; the hollow socket b has its forward end (see Fig. 4) bored out to receive
the nose d of the sliding bolt, and has its rear end bored to a smaller diameter to
suit the tail i of the sliding bolt; the annular space thus formed around the said
tail i contains a helical spring k, by which the sliding bolt is urged forwards. A
pin is fixed in the tail of the sliding bolt, and the said pin travels in a groove or
slot m formed in the rear end of the hollow socket b, the forward motion of the
pin being limited by the forward end of the said slot m. A transverse continuation
n of the slot m enables the pin Z to be turned into a secure position, from which it
cannot be forced back by a knife or other instrument pressed against the end of the
sliding, bolt from the outside. The said pin also serves to hold the sliding bolt
out of action by being turned transversely behind the rear of the hollow socket b
after the said sliding bolt has been withdrawn. o is a knob or handle by which
the sliding bolt is moved. p (Fig. 5) is a vertical strip of metal screwed to the face
of the upper sash, and having several holes », into any one of which holes the
sliding bolt & may enter, so as to secure the sashes together when either of them
has been partially opened.
Although the Drawings shew the application of my improved fastening to a
window only, the said fastening may obviously be equally well applied to a door for
the same purpose.
Having now described the nature of my said Invention, and the manner in which
the same is to be carried into effect, I desire it to be understood that without
limiting myself to the precise details herein-before contained (as these may be to
some extent varied or modified without departing from the nature of my said
Invention). I desire it to be understood that what I claim as the Invention to be
protected by the berein-before in part recited Letters Patent is, the combination of
a spring bolt, travelling pin, and slotted hollow socket, substantially as and for the
purpose herein-before described, and shewn upon the accompanying Drawings.
In witness whereof, I, the said Joseph Palmer, have hereunto set my hand
and seal, this Twelfth day of August, in the year of our Lord 1876.
Witness,
P. EMERY DAVIES,
Clerk to Mr. G. R. Holland,
Birmingham.
JOSEPH (L.S.) PALMER.