Improvements in Fastenings for Window Sashes, Casements, Doors, and the like.
Year: 1895

page_text: Date of Application, 8th Feb., 1895-Accepted, 9th Mar., 1895
COMPLETE SPECIFICATION.
Improvements in Fastenings for Window Sashes, Casements, Doors,
and the like.
We, THOMAS GRAHAM AKERS of 21, Crosby Road, Romford Road, Forest
Gate, Commercial Clerk, and GEORGE THOMAS MITCHELL of 40, London Road,
Grays, Essex, Engineer, 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 fastenings for window sashes, casements, doors and the
like, and the object of the said invention is to provide a novel means designed to
prevent the opening of said fastener by inserting the blade of a knife or any
instrument between the sashes and pressing back the pivoted arm of the fastener.
In the accompanying sheet of drawings is shown how the said invention may be
carried into practice Fig. 1 is a plan, and Fig. 2 a front elevation showing the
device in the position occupied just before the pivoted arm strikes the catch, and
Fig. 3 is a view similar to Fig. 1 showing the pivoted arm home and locked. Like
letters of reference indicate corresponding parts.
In carrying this invention into effect the bed-plate A is provided with the
pivoted arm a and spring as is customary, the said arm a differing from those of
the usual construction in that instead of terminating in a knob or the like it is
screw threaded for a part of its length in order to receive a ball a¹ or other suitable
device adapted to screw on the threaded part a².
The bed-plate B is furnished with the catch b having a more substantial form
than is customary, in order that a recess 61 may be formed in the jaws of the outer
face of the said catch, the said recess being intended to receive the ball a¹ or
other suitable device when the pivoted arm a is pushed home.
The method of fastening is as follows:-The window, casement, door or the like
being closed, the ball a¹ or other suitable device is screwed back on the threads a²
of the arm a the said arm being terminated in a suitable manner to prevent the ball
screwing right off so as to clear the face 62 of the catch 6 when the arm a is turned
on its pivot. The said arm in its movement passes between the jaws of the catch b
and butts against the back 63 of the said catch, the ball a¹ is now screwed forward
until it fits into the recess b', and on the ball being further screwed up it causes a
pressure to be exerted upon the catch b, and the bed-plate A and B in their
respective positions on sashes, casements, doors and the like to be drawn towards
each other.
This movement thus locks the fastening by reason of the ball a¹ or other suitable
device being unable to ride over the face 2 of the catch b.
We do not bind ourselves to the precise form of construction shown in the
accompanying drawings as it is evident we may modify the same without departing
from the nature of our said invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :-
(1.) In a fastener for window sashes, casements doors and the like, the com-
bination of the screw threaded pivoted arm a and bali a¹ or other suitable device
adapted to engage with the recess 6 of the catch & substantially as described.

page_text: (2.) The arrangement and combination of parts constituting the fasteners for
windows, casements, doors and the like, and operating substantially as described
with reference to the accompanying drawings.
Dated this 8th day of February 1895.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicants.