Improvements in Window Fastenings.
Year: 1890

page_text: Date of Application, 29th Oct., 1890
Complete Specification Left, 29th July, 1591--Accepted. 29th Aug. 1891
PROVISIONAL SPECIFICATION.
Improvements in Window Fastenings.
ARTHUR LAMPLOUGH Gentleman 11 Colenso Road Clapton Park N.E. do
hereby declare the nature of this invention to be as follows:-
It consists of a flat strip of metal inch more or less in width 4 inches more or
less in length folded in the shape of an inverted T a cavity being left in the
upright portion. In this cavity an angular shaped metal plate is suspended by
a rivet or screw and so balanced as to act automatically with the opening or
closing of the window sash to the top one of which this fastening is fixed by two
or more screws.
Where this fastener is fixed it obviates the necessity of fastening the window
by hand as the downward action of the sash in closing causes the suspended
angular plate to immediately shoot out and effectually fastens the sashes.
This fastening makes it impossible for the windows to be opened from the
outside by any tool or instrument unless the glass is broken.
Dated this 29th day of October 1890.
ARTHUR LAMPLOUGH.
COMPLETE SPECIFICATION.
Improvements in Window Fastenings.
I ARTHUR LAMPLOUGH 11 Colenso Road Clapton Park in the County of
Middlesex, Gentleman 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 windows by means of which the window
is automatically fastened when the sliding sashes are closed.
For this purpose I make the window fastenings in the manner shown by the
accompanying drawings in all the figures of which the same part is indicated by
like reference letters.
Figure 1 is a side elevation partly in section showing the meeting rails of the
upper and lower sashes in the closed position.
Figure 2 is a front elevation of the window fastening.
Figure 3 is a plan of Figure 2.
Figure 4 is a side elevation partly in section showing the meeting rails of the
upper and lower sashes separated as when the window is partly opened.
A is a casting or wrought metal casing resembling in form an inverted T,
a cavity being left in the upright portion. In this cavity a metal plate B is
suspended by a rivet C and so counterpoised by a crossbar D that it will project
beyond the meeting rail of the upper sash to which the T shaped casting or metal
casing is fixed by two or more screws.
Upon the meeting rail of the lower sash I secure by two or more screws the
guard plate E serving to take the wear at the point of contact of the metal
plate B with the lower sash and by means of its projecting walls a a¹ to surround
the metal plate B so as to make the latter inaccessible by means of a knife or
similar instrument passed between the meeting rails of the sashes for the purpose
of opening a fastened window from outside.
By means of this fastening, the necessity of fastening the window by hand
is obviated as the downward action of the sash in closing, causes the suspended
metal plate B to immediately shoot out and effectually fasten the sashes.

page_text: 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. A window fastening consisting of a counterpoised metal plate B suspended
within a casting or casing A to project automatically when the meeting rails of
the sashes are brought into the closed position substantially as described.
2. In a window fastening as described in the above claiming clause the guard
plate E to surround the projecting metal plate Bas and for the purpose
described.
1
2001
AYRTON & THOMAS,
Agents for the Applicant.