AN IMPROVED SCREWDOWN SAFETY SASH FASTENING
Year: 1884

page_text: I FREDERICK ROBERT WILDEGOSE of 20 Cambridge Place Paddington London
in the County of Middlesex Builder and Decorator do hereby declare the nature
of my Invention for AN IMPROVED SCREWDOWN SAFETY SASH FASTENING to be
as follows:
Whereas sash fastenings as at present constructed can be easily opened or shut
by pushing the knob on the end of the tongue with the finger or thumb, my
Invention consists of a simple and efficient method of fixing the tongue when
pushed out, in which position it fastens the upper and lower sashes together. To
do this, instead of fixing the shank of the knob to the tongue of the fastener I
screw it into the tongue and then by giving two or three turns to the knob I make
it project below the tongue; on the catch plate of the fastener I make a hook or
catch which receives the lower end of the screw when screwed down and renders
it impossible to push the tongue back, and so open the sash until the knob has
been again screwed up.
oth

page_text: I FREDERICK ROBERT WILDEGOSE of 20 Cambridge Place Paddington London
in the County of Middlesex, Builder and Decorator do hereby declare the nature
of my Invention for AN IMPROVED SCREW DOWN SAFETY SASH FASTENING
and in what manner the same is to be performed, to. be particularly described
and ascertained in and by the following statement :—
My Invention consists of a method of fixing the tongue of the sash fastener
when pushed out so as to secure the sash and prevent the possibility of opening it
from the outside; by means of a screw on the shank of the knob attached to the
tongue which knob on being screwed down renders it impossible to push back
the fastener and so open the sash until the knob has been again screwed up.
The manner in which I carry my Invention out is described below, reference
being had to the accompanying Drawing. On the end of the tongue marked G on
the Drawing there is a boss C which may be rather larger then the bosses now in
use and I form a screw in the hole in it, through which the shank B which is
attached to the knob A passes. I also form a screw on the shank B, thus by
turning the knob A the shank B is moved up and down. In the Drawing E and F
represent the two plates of the sash fastener.
The tongue G being pushed out so as to secure the two parts of the sash together,
the knob A may then be turned round two or three times until the shank B
projects some distance below C. On the plate F a catch or hook marked D may
be formed. It will now be seen that if the shank B has been screwed down by the
knob A it will be caught by the catch D and thus it will be impossible to force the
tongue. G back and open the sash. On the Drawing Figr. 4 shows the knob A
screwed up and Fig. 5 shows it screwed down Fig. 1 being a section through the
boss C which shows the screw, the shank B being bossed at the end so as to prevent
it from coming out of the boss C but other suitable arrangement as a screw in the
lower end may be used. This view also shows the way in which the knob A may
be fastened if made of glass or china the end of screwed shank B being carried up
as shown by dotted lines and bossed or rivetted over at the end. Figra, 2 & 3 are
plans of the fastening. Having now particularly described and ascertained the
nature of my said Invention and in what manner the same is to be performed
I declare that what I claim is the method of securing sash fastenings by means of
a screw substantially as and for the purposes herein described.
110th
Monch 100A