Improvements in Window Fastenings and Stops.
Year: 1894

page_text: Date of Application, 22nd Nov.. 1894
Complete Specification Left, 23rd Sept., 1895-Accepted, 26th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in Window Fastenings and Stops.
I GEORGE FREDERICK WILLIAMSON, of Midland Foundry Midland Road
Wellingborough, in the County of Northampton, Ironfounder, do hereby declare
the nature of this invention to be as follows:-
--
This invention for improvements in window fastenings and stops is specially
applicable for sash windows which are hung on horizontal pivots or bars about
which they rotate when being opened or closed and has for its object to auto-
matically fasten the window when closed and also to prevent its opening beyond
a predetermined extent when unfastened.
In window fastenings and stops constructed according to this invention a
weighted catch lever is pivoted to a bracket or other suitable fixing secured to
the meeting rail of the upper sash, to the top rail of the sash frame or other
convenient part contiguous to the top or meeting rail of the swinging sash, so
that on closing the same the catch lever is displaced and falls automatically in
front of the top rail and thus secures it in the closed position. When opening
the window the catch lever is removed by hand or otherwise.
To prevent the opening of the window beyond a predetermined extent light
frames carrying buffer stops of india rubber or other elastic material are provided
and secured to the sash frames.
Dated this 22nd day of November 1894.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.
Improvements in Window Fastenings and Stops.
1 GEORGE FREDERICK WILLIAMSON, of Midland Foundry, Midland Road,
Wellingborough, in the County of Northampton, Ironfounder, 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 for improvements in window fastenings and stops is specially
applicable for casement windows and for sash windows which are hung on
horizontal pivots or bars about which they rotate when being opened or closed
and has for its object to automatically fasten the window when closed and also
to prevent its opening beyond a predetermined extent when unfastened.
In the accompanying drawings:
Fig. 1 is an elevation of a part of a window showing my improved fastening and
stop device.
Fig. 2 is a vertical section, and
Fig. 3 is an enlarged vertical section.
A sash frame a whose bottom rail b is cut at an angle rests upon a rail c
similarly angled so as to give it a natural tendency to fall inwards. On the sash
frame d is secured a housing or bracket e to which is hinged by a pin fa catch lever g
D

page_text: which when the swinging sash a is closed falls automatically into the position
shown in front of the top rail of the said fratne a and prevents it from opening.
A cord may be attached to the loop h by means of which the catch lever may be
removed to the position showu in dotted lines when the sash frame a automatically
opens.
In order to prevent the swinging frame a from opening beyond a predetermined
extent light frames i are provided having buffer stops of leather, india rubber or
other suitable material secured to them to reduce the force of impact.
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 comprising a catch lever hinged to a bracket and falling
automatically before the swinging sash frame substantially as described and for the
purpose set forth.
2. The construction of window stop frames with buffer stops for limiting the
extent of the opening of the swinging sash frame substantially as described.
3. The arrangement and construction of window fastenings and stops sub-
stantially as described with reference to the drawings.
Dated this 23rd day of September 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, W.C., Agents.