IMPROVEMENTS IN STOVE GRATES
Year: 1871

page_text: LETTERS PATENT to George Harris Haywood, of Dyer's Hall Wharf,
in the City of London, Manufacturer, and Frederick Parker, of the
same Place, Salesman, for the Invention of "IMPROVEMENTS IN STOVE
GRATES."
Sealed the 25th July 1871, and dated the 27th January 1871.
PROVISIONAL SPECIFICATION left by the said George Harris Haywood
and Frederick Parker at the Office of the Commissioners of Patents,
with their Petition, on the 27th January 1871.
We, GEORGE HARRIS HAYWOOD, of Dyer's Hall Wharf, in the City of
London, Manufacturer, and FREDERICK PARKER, of the same Place,
Salesman, do hereby declare the nature of our said Invention for
"IMPROVEMENTS IN STOVE GRATES," to be as follows :-
This Invention relates to that description of open fire-grate or stove
known as a "
register stove," and has for its object the regulation of the
draught of such stoves in a more simple and effectual manner than
heretofore.

page_text: The improvements consist in forming a sliding or rotating hit-and-miss
valve in the hinged lid or back of the stove, in combination with which
there may be formed a second sliding hit-and-miss valve in the arch of
the stove itself; or the door may be formed in the arch itself, the said
valves being formed of two perforated plates maintained constantly face 5
to face, or in contact with each other, and one of which is slid or turned
slightly on a pivot, so as to cause its perforations to coincide or not as
required with the perforations in the fellow plate.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Harris Haywood and Frederick Parker in
the Great Seal Patent Office on the 27th July 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE
HARRIS HAYWOOD, of Dyer's Hall Wharf, in the City of London, Manu-
facturer, and FREDERICK PARKER, of the same Place, Salesman, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of January, in the
year of our Lord One thousand eight hundred and seventy-one, in the
thirty-fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said George Harris Haywood and Frederick
Parker, Her special license, that we, the said George Harris Haywood
and Frederick Parker, our executors, administrators, and assigns, or such
others as we, the said George Harris Haywood and Frederick Parker,
our executors, administrators, or assigns, should at any time agrec
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 vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
“IMPROVEMENTS IN STOVE GRATES," upon the condition (amongst others)
that we, the said George Harris Haywood and Frederick Parker, by
an instrument in writing under our hands and seals, or under the
hand and seal of one of us, 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

page_text: Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that we, the said George Harris Haywood and
Frederick Parker, do hereby declare the nature of our said Invention,
and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference
being had to the accompanying Drawings, and to the letters and figures
marked thereon (that is to say :)—
This Invention relates to that description of open fire-grate or stove
known as a "register stove," and has for its object the regulation of the
draught of such stoves in a more simple and effectual manner than
heretofore.
The improvements consist in forming a rotating or partially rotating
hit-and-miss valve in the hinged lid or back of the stove, in combination
with which there may be formed a second hit-and-miss valve in the arch
of the stove itself, or the door may be formed in the arch itself, the said
valves being formed of two perforated plates maintained constantly face
to face, or in contact with each other, one being fitted to turn on a pivot
so as to cause its perforations to coincide or not as required with the
perforations in the fellow plate.
And in order that the said Invention may be fully understood, we
shall now proceed more particularly to describe the same, and for that
purpose shall refer to the several Figures on the annexed Sheet of
Drawings, the same letters of reference indicating corresponding parts
in all the Figures.
Figure 1 of our Drawings represents a front view of what is known as
a "register stove" with our improvements applied thereto; Figure 2 is
a front elevation of a valve detached; and Figure 3 is a vertical section
of the same.
A is the ordinary grate or fuel receptacle; B, the hinged lid or back,
provided with radiating slots or openings a; C is a metal plate carried
upon a stud or pin 6 fitted to or formed on the plate B. The plate C
is also provided with perforations corresponding with those formed in
plate B. A slot c is made in the plate B, through which the shank of
the projecting knob d is passed and firmly connected to the plate C.
The slot c is made of such a length as that when the knob is pushed to

page_text: one end thereof it will cause the plate C to rotate upon the stud 6 and
close the valve by causing the metal between the perforations in such
plate to cover the opening in the plate B, as shewn in Figure 2, but
when the knob d is pushed to the opposite end of the slot c the valve
will be full open, the perforations in both plates coinciding or being
opposite to each other. The draft may be regulated as desired by
moving the knob d more or less along the slot c, and thus contract
more or less the opening in the plate B. If desired the valve may be
formed in the arched portion D of the stove in lieu of in the hinged lid
or back, or in both if required.
Although we have represented the valve in the form of a semicircle,
we do not confine ourselves thereto, as it may be made of a circular or
of any other curved form, so long as one of the two plates forming the
valve shall, by being partially rotated on a. stud or pin, be made to
more or less contract the openings made in the plate, so as to regulate
the draft.
Having now described and particularly ascertained the nature of the
said Invention and the manner in which the same is or may be used
or carried into effect, we would observe, in conclusion, that what we
consider to be novel and original, and therefore claim as the Invention
secured to us by the herein-before in part recited Letters Patent is, the
constructing of open fire-grates, or what are known as register stoves,
with one or more rotating or partially rotating hit-and-miss valves, con-
structed and arranged substantially as and for the purpose herein-before
described and illustrated by the Drawings.
In witness whereof, we, the said George Harris Haywood and
Frederick Parker, have hereunto set our hands and seals, this
Twenty-sixth day of July One thousand eight hundred and