IMPROVEMENTS IN APPARATUS FOR OPENING, CLOSING, AND SECURING WINDOWS AND VENTILATORS WHICH SWING ON CENTRES OR HINGES
Year: 1875

page_text: LETTERS PATENT to George Eyre, of Codnor, in the County of Derby,
for the Invention of "IMPROVEMENTS IN APPARATUS FOR OPENING,
CLOSING, AND SECURING WINDOWS AND VENTILATORS WHICH SWING ON
CENTRES OR HINGES."
Sealed the 31st March 1876, and dated the 1st December 1875.
PROVISIONAL SPECIFICATION left by the said George Eyre at the
Office of the Commissioners of Patents, with his Petition, on the
1st December 1875.
I, GEORGE EYRE, of Codnor, in the County of Derby, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN Apparatus
FOR OPENING, CLOSING, AND SECURING WINDOWS AND VENTILATORS WHICH SWING ON
CENTRES OR HINGES," to be as follows:-
These improvements have for their object the closing, opening, and
securing of windows and ventilators of that kind that swing or turn on
centres or hinges, whereby I am enabled to open, close, and fasten
windows or ventilators of this description without the aid of cords and
so forth as at present in use.

page_text: The arrangements I prefer to adopt are as follows:- In the case of a
casement or fanlight a plate is secured, to which is jointed an arm.
The other end of said arm being jointed to another arm, which is
supported by a bracket fixed to the frame of the window; to the
opposite end of this latter arm is secured a quadrant. At the lower
part of the frame of the window I fix a plate from which a pin projects.
A slotted arm takes into this pin, said arm having a rack into which
gears a small pinion wheel, connected with which is a lever or handle.
The whole being secured by screw or nut to the plate. The slotted rack
is secured to a rod which at its opposite end is formed as a rack, or same
may be secured thereto, said rack taking into the quadrant before-
mentioned. The actuation of the pinion wheel gearing into the rack
in the slotted arm imparts by the rack gearing into the quadrant a
corresponding motion, which by the jointed arms opens or closes and
secures the window.
For large casements or fanlights the two arms may be secured to
each side and joined by a rod, at one end of which the quadrant is
secured; the motion being carried by said rod to the opposite side of
window.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 2
filed by the said George Eyre in the Great Seal Patent Office on
the 31st May 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
EYRE, of Codnor, in the County of Derby, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of December, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said George Eyre, Her special
licence, that I, the said George Eyre, my executors, administrators,
and assigns, or such others as I, the said George Eyre, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and

page_text: venu, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
APPARATUS FOR OPENING, CLOSING, AND SECURING WINDOWS AND VENTILATORS
WHICH SWING ON CENTRES OR HINGES," upon the condition (amongst others)
that I, the said George Eyre, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calender months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said George Eyre, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and
by the following statement :-
These improvements have for their object the closing, opening, and
securing of windows and ventilators of that kind that swing or turn on
centres or hinges, whereby I am enabled to open, close, and fasten
windows or ventilators of this description without the aid of cords and
so forth as at present in use.
The arrangements I prefer to adopt are as follows:-In the case of
a casement or fanlight a plate is secured to the casement, to which is
jointed an arm, the other end of said arm being jointed to another arm
which is supported by a bracket fixed to the frame of the window. To
the opposite end of this latter arm is secured a quadrant. At the lower
part of the frame of the window I fix a plate from which a pin
projects. A slotted piece takes into this pin, said arm having a rack,
into which gears a small pinion wheel, connected with which is a lever
or handle; the whole being secured by screw or nut to the plate. The
slotted rack is secured to a rod which at its opposite end is formed as a
rack, or same may be secured thereto, said rack taking into the quadrant
before mentioned. The actuation of the pinion wheel gearing into the
rack in the slotted piece imparts by the rack gearing into the quadrant
a corresponding motion, which by the jointed arm opens or closes, and
secures the window.
=

page_text: quadrant is secured, the motion being carried by said rod to the opposite
side of the window.
It is evident to the practical man that for windows which open
outwards some of the parts herein-before described may be dispensed
with, and the description is hereafter given of the details desirable for
this purpose.
Fig. 1 represents in elevation one form of my improvements; Fig. 2
is front elevation of lower part.
A represents the casement or fanlight, hinged at a to the frame B
of the casement or fanlight; C is arm attached to casement at c, said
arm being jointed at D to arm E, said arm E being supported and held
by bracket F and jointed at e; Gis quadrant cast or secured at end of
arm E; His pin projecting from a plate H', which is attached to the
frame B of the window; I, pinion wheel attached to said pin H, said
pinion wheel taking into rack K cast or formed on the inside of the
slotted piece L. To the slotted piece L rod M is secured; to the upper
part of which rod M a rack N is carried, said rack gearing into
quadrant G. The Drawing shows the casement closed. To open same,
the handle O is turned till it assumes the position shewn by the dotted
lines. This action causes the rod M to rise by the pinion wheel taking
into the rack in the slotted piece L, and the rod M with rack N gearing
into the quadrant G causes the casement to be opened. The position
of the parts when opened is shewn by dotted lines in Fig. 1. The
handle O may work either horizontal or vertical when found necesssary.
Fig. 3, plan or horizontal view, showing the application of my
Invention to casements opening outwards.
In Fig. 3 I dispense with the rack, quadrant, and lower parts shewn
in Fig. 1, and use mainly the arms C and E. The arm E is attached
to the sill of the window frame by pin e being held thereto by plate or
suitable arrangements. The handle O is secured to arm E; the arm C
is attached to the casement A by plate at c, said casement being jointed
at a.
111

page_text: the arms C and E, with casement A, to assume the position shewn also
by the dotted lines. To keep the window, casement, or ventilator closed,
it will merely be necessary to bring the parts into the proper position,
and they will remain fast till operated upon for opening as herein-before
described.
Having now particularly described and ascertained the nature and
object of my said Invention, and in what manner the same is to be
performed or carried out in practice, I hereby declare that I claim the
combinations of mechanical arrangements for opening, closing, and
securing windows and ventilators which swing on centres or hinges,
substantially as same are herein-before set forth and described.
In witness whereof, I, the said George Eyre, have hereunto set
my hand and seal, this Twenty-ninth day of May, in the year
of our Lord One thousand eight hundred and seventy-six.
Witness,
T. MORGAN,
Secretary,
Inventors' Patent Right Association, L.,
21, Cockspur Street,
S.W.
GEORGE EYRE. (L.S.)