A New Window Fastener.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
A New Window Fastener.
THOMAS WILLIAM GUNTON 29 Chatterton Road, Finsbury Park London,
Joiner do hereby declare the nature of this invention to be as follows:-
A spring bolt to be fixed on bottom sash & drawn back by a knob & stopped by
a disc which falls in front of the bolt on raising or lowering either sash. A. bolt
receiver & a spring catch similar to the ordinary sash fastener but which springs into
the locking position when the window is closed, to be fixed on the upper sash. The
disc is worked by two lugs on face of bolt receiver. A counter lever holds the
spring catch back when the window is open and is controlled by the bolt so that
upon closing the window the bolt lifts counter lever & allows the catch to fly into
the locking position.
1, THOMAS WILLIAM GUNTON, of 29 Chatterton Road, Finsbury Park,
London, N. Joiner, 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 the manner in which I construct sash fasteners for
automatically locking or securing the sashes when they are closed, and for providing
additional security to the sashes by means of a spring bolt combined with a moving
catch or fastener.
In the accompanying sheet of explanatory drawings
Fig. 1 is a sectional elevation of iny bolt and catch; and Fig. 2 is a general plan
of the same.
Fig. 3 is an end elevation of the bolt casing.
Fig. 4 is an end elevation of the catch plate and locking arm.
I attach my spring bolt casing A, having a spring bolt B, within it, to the lower
sash frame rail; and I attach the catch frame or plate C having a moving catch D
mounted upon it, to the meeting rail of the upper sash.
Within the casing A I place the bolt B with its spring & mounted behind it upon
a guide or pin or bar D; the bolt being made with a central hole or groove to
permit of its sliding freely upon the guide bar and being manipulated by means of
a knob or head B. Upon the case I provide a projecting keep E having a disc or
lock plate F carried within it for the purpose of holding back the bolt when the
window is opened and the sashes not together; the keep E serves as the fastening
stud piece to which the catch D unites or against which it presses to draw the two
sashes together. I vary the shape of the keep E to suit any particular form of catch
lever D that it may be desired to employ, sometimes making it with a tapered or
inclined back surface or path for enabling a close contact between the two meeting
rails to be made.

page_text: Upon the catch bracket or plate C I mount my catch D with its impelling spring
attached to it in any well known manner; the catch turning freely upon a pin C¹.
I form horn plates or lifting arms G upon the plate for ensuring that the locking
disc F is removed from the front of the bolt B when the lower sash is raised, or
when the two sashes are brought into line; by these horns G I provide an
automatic locking of the window sashes whenever they are brought together,
seeing that the spring D carries forward the bolt B when the locking plate Fis
raised into the keep E.
I provide an additional automatically acting locking arrangement for holding
and releasing the catch D by means of a tripping lever H which I pivot by a
pin to the same plate or frame C. This trip lever I form with a tail H¹ which
is raised whenever the bolt B enters the hole C2 and with a head stop H3 which holds
the catch D back when the bolt is withdrawn from the catch plate; the entrance
of the bolt into the hole acts to raise the tail piece H' and thus to liberate the head
stop H³.
In this way I automatically provide for the double fastening of the
sashes when they are brought together. I mount my spring plate K or coil spring
beneath the tripping lever H for raising the head H³ after the catch has passed
over its inclined path. I make a slot or groove B2 for slipping the bolt pin in to
retain it before lowering the window.
I do not limit the application of my invention to any particular form of bolt or
shape of barrel or catch lever but I modify the same to suit any particular class of
window or style of mounting without departing from the essential features of an
automatically acting locking and fastening device as herebefore described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;-
(1.) The construction and arrangement of window sash fasteners having sliding
bolts and automatically controlled pivotted catches substantially as hereinbefore
described and as illustrated in the accompanying drawings.
(2.) In a sash fastener the combination of a sliding bolt carried upon one sash for
entering a casing or bracket carried upon another sash for the purpose of locking
the two together and for liberating a spring controlled catch which then auto-
matically travels or turns upon its centre or pivot and further secures the two
sashes together substantially as herein before described and as illustrated in the
accompanying drawings.
(3.) In a sash fastener the arrangement of a pair of horns or a lifting bar or horn
upon one portion to raise a disc or plate from its lowest position where it is closing
the hole and keeping back the bolt substantially as used for the purposes
herein before described and as illustrated in the accompanying drawings.
Dated this 7th day of November 1894.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for Applicant.