Improvements in Window-sash Fasteners.
Year: 1897

page_text: Date of Application, 25th June, 1897
Complete Specification Left, 1st Sept., 1897-Accepted, 6th Nov.,
1897
PROVISIONAL SPECIFICATION.
Improvements in Window-sash Fasteners.
I, WILLIAM EDWARD KING, of 79, Palk Road, Wellingborough, Northampton-
shire, Blacksmith's Labourer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in window-sash fasteners and has for
object to provide a strong lock which cannot be tampered with from outside the
window.
For this purpose I provide a strong flat metal bolt formed at its outer end with
an upwardly projecting lip or ridge and fitted so as to slide easily within the raised
portion of a bent plate or bracket fixed to the meeting-rail of the inner sash. This
plate or bracket is formed with a slot through which passes the spindle of a knob
attached to the sliding bolt for operating the latter. The bolt bears and slides
upon a curved spring carried in the bracket underneath it, and at the inner side
of the plate or bracket is pivoted a horizontal arm for preventing the bolt from
being pushed back when in its locked position. To the meeting-rail of the outer
sash is fixed a similarly bent plate to the aforesaid one acting as a catch or socket
for receiving the end of the sliding bolt.
In order to unlock the window the horizontal arm is turned up by means of a
knob on the same thus allowing the bolt to be pushed back. The knob on the
bolt is then pressed down forcing the latter downwards against the pressure of the
spring underneath until the lip or ridge at its end is clear of the bent plate or catch
on the outer sash. The knob is then pulled back to the end of the slot which thus
draws the bolt back clear of the outer sash and permits the latter being lowered and
the inner one raised.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Window-sash Fasteners.
I, WILLIAM EDWARD KING of 79, Palk Road, Wellingborough, Northampton-
shire, Blacksmith's Labourer, 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 improvements in window-sash fasteners, and has for
its object to provide a strong lock which cannot be tampered with from outside the
window.
For this purpose I provide a strong flat metal bolt formed at its outer end with
an upwardly projecting lip or ridge and fitted so as to slide easily within the raised
portion of a bent plate or bracket fixed to the meeting rail of the inner sash. This
plate or bracket is formed with a slot through which passes the spindle of a knob
attached to the sliding bolt for operating the latter. The bolt bears and slides upon

page_text: a curved spring carried in the bracket underneath it, and at the inner side of the
plate or bracket is pivoted a horizontal arm for preventing the bolt being pushed
back when in its locked position. To the meeting-rail of the outer sash is fixed a
similarly bent plate to the aforesaid one acting as a catch or socket for receiving
the end of the sliding bolt.
In order to unlock the window the horizontal arm is turned up by means of a
knob on the same thus allowing the bolt to be pushed back. The knob on the
bolt is then pressed down forcing the latter downwards against the pressure of
the spring underneath until the lip or ridge at its end is clear of the bent plate or
catch on the outer sash. The knob is then pulled back to the end of the slot which
thus draws the bolt back clear of the outer sash and permits the latter being
lowered and the inner one raised.
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 plan of my improved fastener and
Fig. 2 is a cross section of the same.
A is the bolt which as shown in Fig. 2 is formed with a lip a at its front end
This bolt is carried by the plate or case B screwed on the meeting rail of the lower
sash and provided with the slot & in its upper side. The bolt A is provided with
the pin and knob C which passes through the slot and enables the bolt to be
operated.
Below the bolt is placed the flat spring D which raises the bolt, but also allows
it to be pressed down. At the side of the case the arm is pivoted adapted to
extend behind the case B and to prevent the bolt being withdrawn. This arm is
formed with the projecting part or rib e forming a spring catch to secure the arm
in locking position and it is also provided with the handle e allowing it to be
raised or lowered:
On the other meeting rail the plate is fitted below the raised part of which the
bolt is adapted to slide. When it reaches the end of its travel the lip a will engage
with the raised part of the plate the spring causing the bolt to rise.
To withdraw the bolt the arm E is pushed up and the bolt is then pressed down
by means of its knob or handle and pulled back.
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. In an improved sash fastener, the combination with a raised plate or case on
the meeting rail of the lower sash and a second plate on the other meeting rail
of a bolt within the case, a lip on the end of the plate engaging with the second
plate, a spring below the said bolt causing it to rise and a locking arm behind the
said bolt, substantially as described and for the purposes specified.
2. In an improved sash fastener, the combination with a case or raised plate on
the meeting rail of the lower sash and a second plate on the other meeting rail of a
sliding bolt within the case a lip on the said bolt, a locking arm carried by the
case and extending behind the bolt and a knob on the latter operating it,
substantially as and for the purposes specified.
3. The improved sash fastener having a spring bolt engaging by means of a lip
with a raised plate and a locking arm behind the said bolt, constructed and
operating substantially as described and shown in the accompanying drawings,
and for the purposes specified:
Dated this lat dan of t 3008
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.