Improvements in Appliances for Securing Windows and other such Structures.
Year: 1890

page_text: Date of Application, 1st Mar., 1890
Complete Specification Left, 29th Nov., 1890-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Appliances for Securing Windows and other such
Structures.
I, JOHN COPPARD, of 21, New Charles Street, City Road, London, in the
County of Middlesex, Engineer, do hereby declare the nature of this invention to
be as follows :-
:-
One form of fastener consists of two pieces of metal of suitable size and form.
At one end of each piece of metal, I attach a cog-wheel-crank-or cam_action
which connects the pieces of metal so that they must move together when so
arranged they are secured to a piece of metal-by means of screws or rivets-passing
through the ends-having the cog wheels-crank or cam action-the aforesaid
pieces of metal revolve on the said screws or rivets-and are so constructed that
when drawn together one piece enters the other-the ends of pieces of metal-
without the cog-wheel-crank- or cam action close upon a stud or stop-so arranged
as to prevent them being forced from their position-except by the person having the
control of the two ends of the pieces of metal-closed upon the stud or stop
before referred to.
Another form of fastener consists of two plates of metal-of suitable size and
form having any number of holes therein-the said plates are then fixed-one on
each side of the back-or outward window sash.
I then form two appliances thus-two pieces of metal of suitable construction in
which I insert a form of bolt-in each-one end of the said bolt-projects-out of
the pieces of metal before named-at the other ends of the bolts a spring is
attached to each-the bolts are kept in position thereby and a lever or other suitable
means.
I then fix the aforesaid pieces of metal on the top of the front sash of the window
in such manner that the projecting bolt ends-enters one of the holes in the plates
fixed on the back window sash before referred to.
The aforesaid springs-holding the bolts in position-secures the two sashes of
any window in any desired position-and can only be relieved-by a person from
the inside releasing the levers before referred to.
Dated Pinct day of March 1900
JOHN COPPARD.
COMPLETE SPECIFICATION.
Improvements in Appliances for Securing Windows and other such
Structures.
I, JOHN COPPARD, of 21, New Charles Street, City Road, London, in the
County of Middlesex, Engineer, 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 :—
One form of fastener-(Sheet 1)-I make two pieces of metal of suitable size and
form Figs. 3 and 5 at one end of each of said pieces of metal-is a cog wheel having
a hole in the centres thereof. One of the pieces of metal is hollow Fig. 3 and is open
on one side Fig. 4 the other piece of metal Fig. 5 is flat having wedge edge on one
side Fig. 6 so that it can enter the open side of Fig. 4 I now make a metal
plate Fig. 1 with holes therein of suitable size and form. Bending the said plate
at the back upward and then over the top Figs. 1 and 2 leaving it open in front
Fig. 2 into which I fit the cog wheels Figs. 3 and 5 having made holes in the double
plate Fig. 1 I pass screws through the plate and cog wheels, thus securing them in

page_text: On drawings Sheet 21 claim―
1-The construction and general form of the bolts Figs. 1 and 2-the spring-
the crank Fig. 3 and the boxes Figs. 6 and 7.
2- That this appliance made and fitted as described it secures the two window
sashes in any desired position-against intruders from the outside.
3-That by removing the knob or lever K the window is locked-and cannot be
opened either from the inside or outside.
In witness hereof I hereunto this Twenty-ninth day of November 1890 sign
my name
JOHN COPPARD.