For Improvements in securing Window Sashes.
Year: 1886

page_text: JOHN LEADER SEYMOUR of 166 Malpas Road Brockley in the County of Kent (late)
Mercantile Clerk do hereby declare the nature of this invention to be as follows:-
For Improvements in securing Window Sashes. My Invention has for its object
Improvement in the Securing of Window Sashes when left open to admit air into the
rooms, to provent thieves pushing the sashes up to obtain an entry into the house,
also to prevent Window sashes from rattling and to act as security in case of thieves
forcing the ordinary fastening.
To carry out my Invention I provido a Brass or Metal Case having a clasp spring
catch fitted therein, this spring catch is fitted with a small pin screw to force the catch
back when not in uso so as to bring it level with the frame, and also when in use
to secure the clasp to the lower frame, for which purpose 1 provide a Brass or Metal
plate having a slot made therein and which is fixed on the top Bar of the bottom
frame.
Now the Brass or. Metal Case has a facing of about six inches longer than the case
itself and the extra length has screw holes to receive a screw key as follows.
An oblique brass or metal plate (the perpendicular portion being partly hollowed
out) is fixed in the lower frame of the Window and in this hollow cavity of the plate
a screw hole is made to fit the screw key to work through into the plate of the upper
frame thereby securing it from rattling and acting as a double security against
thieves; likewise when the sashes are up and fastened with the ordinary fastening
this screw key is made to screw into the plate of the upper sash thereby securing both
sashes in case the ordinary fastening is forced.
D
Dasma 188C

page_text: COMPLETE SPECIFICATION.
Improvements in Window Fastenings.
I, JOHN LEADER SEYMOUR late of 166 Malpas Road Brockley in the County
of Kent, now of High Street Saffron Walden in the County of Essex, late Mercantile
Clerk 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 :-
-
My Invention relates to an improved moans of securing Window Sashes when loft
open for Ventilation.
It consists of a Brass or Metal plate which is fixed in the perpendicular part
of the upper sash dimensions about 9 inches long by inch wide, in the upper portion
of this plate (marked A A in my Drawings) a Brass or Metal case is fixed (marked B B)
being about 4 inches long by inch wide (more or less) in this case is fitted
to revolve backwards or forwards on a strong pivot a Clasp Holdfast having a
spring CC to facilitate its action, at the upper end of this Holdfast I provide a small
pin Screw for the purpose of regulating its action either to bring it flush with the
plate (marked A A) or to secure its grip to the slot in the lower plate (marked D)
and which is described hereafter.
For the bottom sash of the Window I provide a perpendicular oblique Brass
or Metal plate the oblique portion of this plate has a slot (marked D) to receive
the Clasp end of the holdfast which when in position fastens the two sashes together,
the perpendicular portion of the plate (marked A A) has screw holes for a thumb
screw which is intended to pass through this plate and the frame into the lower
portion of the plate marked EE which is intended to act as a secondary security
against thieves or rattling of Sashes.
To fix my Invention it is desirable to first secure the oblique perpendicular plate
on the lower frame and to Note that only the scolloped portion is to be morticed into
the frame the other portion of the plate is simply fastened on the frame with screws,
first cutting away a small portion of the frame immediately under the slot to allow
the clasp end of the holdfast to take a proper bite of the plate.
In fixing the upper plate (marked A A) with the case containing the holdfast, take
a correct measurement so as to bring the first screw hole for the thumb screw exactly
opposite to the screw hole in the plate (marked F F) as this Thumb screw is intended
to fasten the two sash frames together, a mortice hole is then to be cut in the sash
frame to receive the Case but the plate itself is simply fastened on the frame with
screws then as the plate will not be flush with the frame it will be necessary to

page_text: cut away a small portion of the lower frame to allow the plate (marked A A) to work
freely between the two sashes.
Having now particularly described and ascertained the nature of my said Invention
and in what manner it is to be performed, I declare that what I claim is as follows:-
That I do not confine or restrict myself to the precise measurements or arrange-
ments which I have described as variation is necessary owing to some frames being
wider than others; therefore without alteration of the principle or main features
of this my Invention, but what I consider to be novel and Original and therefore
claim is
1st. The whole of that part of the Invention as especially set forth in my Drawings
and marked Fig. 1 and 2.
2nd Disclaiming the Thunh Sonare as not being original or naval