Year: 1887

page_text: Date of Application, 17th Mar., 1887
Complete Left, 29th Sept., 1887
Complete Accepted, 4th Nov., 1887
I PETER ALLEN CHINNERY of Thorold Road Chatham in the County of Kent,
Engineer and Shipwright do hereby declare the nature of this invention to be as
follows:-
This Invention relates to certain improvements in window fasteners the object being
to obtain security from being forced open from outside and provide means whereby
the sashes are so drawn together as to prevent draught and effectually stop the rattling
of such sashes when the wind is blowing, also simplicity of construction and means of
easy adjustment.
In carrying out my invention I provide a socket which is secured on the inside of
the top sash and is so made as to receive and allow of a good grip from a catch hinged
to a forked arm fitted on the top of lower sash and said forked arm is provided with
slots which terminates at the other end with an upright piece, so as to allow of lifting
to open sash or of dropping for securing same, and this catch is so shaped as to fit in
the recessed part of the socket. The hinged catch and arm are fitted on a pin which
works in long slots in order to admit of the forward and backward movement of the
arm for purposes of locking or unlocking which is effected by means of a thumb screw
which works in a tapped hole at the upright end of the forked arm.
A bearing piece of metal is fastened to the bottom or inside sash on front thereof
in such a manner as to obtain a bearing through and against which the thumb screw
works.

page_text: Improvements in window Fasteners.
1 PETER ALLEN CHINNERY of 16, Thorold Road Chatham, in the County of Kent,
Engineer, and Shipwright, 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 certain improvements in window fastenings the object
being to construct a sash fastener-whereby :
(1) Security from being forced open from outside is obtained.
(2) The sashes are so drawn together as to prevent draught and the rattling thereof
is effectually prevented.
(3) Simplicity of construction and means of easy adjustment are obtained.
In carrying out my Invention on the inside of the top sash is a socket so
constructed as to allow of a good grip from a catch hinged to a forked arm provided
with slots which terminates at the other end with an upright piece so as to allow of
lifting to open the sash or of dropping same for fastening, and this catch is so shaped
as to fit into the recessed part of the socket.
This hinged catch and arm work in side lugs or bearers which have elongated holes
at their bearings so made to admit of expansion and contraction of the catch and
arm either when withdrawing or securing it which is effected by means of a thumb
screw.
This forked arm has a tapped hole in upright end thereof to receive the before
mentioned thumb screw.
A bearing piece of metal is fastened to the bottom or inside sash or front thereof in
such a manner as to obtain a bearing against which the thumb screw works.
In order that the said Invention may be more fully understood there is annexed
hereto a sheet of drawings illustrative thereof, reference being had to the Figures, and
letters marked thereon (that is to say).
Fig. 1. is a plan of fastener complete, the sash being shown fastened.
Fig. 2, side view of same.
Fig. 3. elevation of the socket.
Fig. 4. side view of catch.
Fig. 5. side view of forked arm.
Fig. 6. shows one of the lugs.
Fig. 7. view showing the thumb screw, and bearing piece.
The socket A (Figs. 1 and 3) is screwed or otherwise fastened on to the top
sash A¹.
On the bottom sash A² the plates B are screwed or otherwise fastened, and provided
with ears or lugs C having slots C thereon. A forked arm D with slotted forks D'
and corresponding to the ears C and slots C is provided between the two plates B,
the forks D¹ whereof fit close up against the ears C.
The catch E is provided with a slotted prolongation F which fits in between the

page_text: forks D and are held therein by means of the pin G, the ends whereof run in the
slots of ears C. The other end of forked arm D is made with an upright piece H,
with a tapped hole H¹ therein and comes nearly up to the edge of lower sash A².
At the inside of the said lower sash A2 and extending, upwards a short distance is a
bearing piece J, the top portion being also provided with a hole J. The thumb
screw K passes through this hole J¹ and also through hole H¹.
The end of this thumb screw K has a washer or stop piece K' to prevent the screw
being drawn right out.
The fastener is shown locked in figure 1. of the drawings and to unlock same the
proceeding is as follows:-
Turn the screw K to the left and by the unscrewing action the forked arm D and
catch E are caused to travel forward until the upright piece H comes into contact
with the stop K¹, and the catch is released from the socket A, and can be easily raised
by the fingers or otherwise as convenient.
The grip of this catch in the socket is so great that it cannot be moved without the
use of the thumb screw as before described.
Having now described the nature and particulars of the said Invention and in what
manner the same is to be performed I declare that what I claim is :
The improved window fastener consisting of the socket A plates D ears or lugs C,
slots C forked arm D, D'H, H' catch E, F, pin G, bearing plate J, J', thumbscrew K,
and part K constructed and operating as and for the purpose herein set forth and as
shown by the drawings.
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