Im- IN APPARATUS CONNECTED PROVEMENTS IN STOVES OR FIRE-PLACES AND THEREWITH.
Year: 1874

page_text: LETTERS PATENT to John Edwin Sherman, of Bucksport, in the State
of Maine, United States of America, but at present residing at
Norbiton Hall, in the County of Surrey, for the Invention of “Im-
IN APPARATUS CONNECTED
PROVEMENTS IN STOVES OR FIRE-PLACES AND
THEREWITH.
"
PROVISIONAL SPECIFICATION left by the said John Edwin Sherman
at the Office of the Commissioners of Patents, with his Petition,
on the 5th February 1874.
I, JOHN EDWIN SHERMAN, of Bucksport, in the State of Maine,
United States of America, but at present residing at Norbiton Hall, in
the County of Surrey, do hereby declare the nature of my said Inven-
tion for "IMPROVEMENTS IN STOVES OR FIRE-PLACES AND IN APPARATUS CONNECTED
THEREWITH," to be as follows:-
My Invention relates to an improved form and arrangement of stove
or fire-place for the purpose of economizing the consumption of fuel
and preventing the smoking of the chimney, and consists essentially in

page_text: necessary. The slats or sections may also be disposed somewhat on the
principle of ordinary Venetian blinds, that is to say, in place of being
taken up upon a roller they may simply slide one over the other.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said John Edwin Sherman in the Great Seal Patent
Office on the 4th August 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
EDWIN SHERMAN, of Bucksport, in the State of Maine, United States
of America, but at present residing at Norbiton Hall, in the County of
Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of February, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Edwin Sherman, Her special
license that I, the said John Edwin Sherman, my executors, admini-
strators, and assigns, or such others as I, the said John Edwin Sherman,
my executors, administrators, or 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 vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN STOVES OR FIRE-PLACES AND IN APPARATUS CONNECTED THEREWITH,'
upon the condition (amongst others) that I, the said John Edwin Sher-'
man, my executors or administrators, by an instrument in writing under
my hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office.
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said John Edwin Sherman, do hereby
declare the nature of my said Invention, and in what manner the same
J
"'

page_text: by the following statement, reference being had to the accompanying
Drawings and to the letters and figures marked thereon, that is to say:-
My Invention relates to an improved form and arrangement of stove
or fire-place for the purpose of economizing the consumption of fuel
and preventing the smoking of the chimney, and consists essentially in
the employment of an enclosed air space or chamber situate at the back
of the stove or fire-place and at the lower part of the flue in combina-
tion with a peculiar arrangement of the front and back of the stove,
whereby the heat is directed into the apartment, and its escape up the
chimney and down draughts are effectually prevented.
In carrying out my Invention I form the stove back of fire-brick of a
concave or dished shape with apertures therein for the admission of air
from a flue beneath for supporting combustion, and I make the upper
part of the back to project or jut forward, and I also extend the front of
the stove forward so that it will be in a line or nearly so with the surface
of the wall of the apartment to be heated, and partially cover such front.
Above the upper part of the back is a narrow aperture opening into the
air space or chamber, through which the products of combustion escape
to the chimney.
I also propose to employ in connection with the improved form of
stove or fire-place a revolving curtain blower enclosed by preference in
a casing forming the front wall or side of the air space or chamber, and
extending downwards to within a short distance of the upper part of the
back so as to provide the narrow aperture herein-before referred to. This
blower is composed of a number of slats connected together in a similar
manner to that of ordinary revolving shutters, and carried in a roller of
an hexagonal or other suitable shape supported in the said casing so that
the blower may be drawn down when it is desired to increase the draught
and raised again by being coiled up upon its roller when not required
for use.
*
And in order that my said Invention may be fully understood I 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 on the Drawing is a front elevation of my improved stove or
fire-place, and Figure 2 is a transverse section of the same.

page_text: A represents the stove or fire-place, the front of which extends
forwards in line or nearly so with the face of the wall of the apartment,
where it terminates in the front plate or flange a which surrounds the
said front and partially covers the wall of the apartment, as shewn;
B represents the stove back made of fire-brick or other suitable material
of a concave or dished shape. Through the lower portion of this back
are apertures b, b, admitting air from a flue C formed in the brickwork
of the chimney immediately behind and beneath the said back to the
contents of the stove or fire-place A for the purpose of supporting the
combustion thereof. Air enters the flue C from the apartment by
openings or passages c, c, formed through the lower part of the stove
back B, as shewn. The upper part of the latter projects or leans forward
and terminates short of the upper back edge of the front of the stove
or fire-place A (with which it is nearly level) so as to leave a narrow
aperture D between itself and the said edge. This aperture opens
upwards into an air space or chamber E formed in the brickwork of the
chimney above the stove or fire-place A and back B, as shewn, through
which chamber the products of combustion escape to the chimney.
By reason of this form and arrangement of the front and back of the
stove or fire-place A the whole of the heat is directed into the apartment,
the narrowness of the aperture D above the back B and the body of air
stored up in the air space or chamber E behind at the same time con-
tributing to prevent the escape of the heat up the chimney and to
exclude down draughts. The bottom of the air space or chamber E also
forms a receptacle for soot, which may be readily removed when required,
the projecting edge or lip of the back B effectually preventing the
descent of the soot into the stove or fire-place A.
F represents a casing formed in the air space or chamber D and fixed
to the front plate or flange a of the stove or fire-place A immediately
behind its upper portion and above the top part of the stove back B. In
this casing an hexagonal or other suitably shaped roller F is mounted on
an axis f, and round this roller is wound or carried a curtain blower G,
which is composed of a number of slats g, g, connected together in a
similar manner to those of ordinary revolving shutters, and which passes
down through an aperture in the bottom of the casing E, and through
a similar aperture in the top of the front of the stove or fire-place A
into the space in front of the latter, so that by the revolution of the
roller F in one direction the curtain blower G is drawn down when

page_text: when
desired to increase the draught, and by the revolution of the said roller
in the opposite direction the curtain blower G is again wound
not required for use.
up
This improved revolving curtain blower may also be applied to existing
stoves or fire-places, such modifications being made in the mode of
fitting it as the particular circumstances of the case may render
necessary. The slats or sections may also be disposed somewhat on the
principle of ordinary Venetian blinds, that is to say, in place of being
taken up upon a roller, they may simply slide one over the other.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention
secured to me by the herein-before in part recited Letters Patent
is,-
First. The general construction and arrangement of a stove or fire-
place in combination with a peculiarly constructed back, substantially
as and for the purposes herein-before described and illustrated by my
Drawing.
Second. The combination and use of an enclosed air space or chamber
with the stove or fire-place, substantially as and for the purposes herein-
before described and illustrated by my Drawing.
Third. The combination and use of a curtain blower with a stove or
fire-place, substantially as and for the purpose herein-before described
and illustrated by my Drawing.
In witness whereof, I, the said John Edwin Sherman, have to this
my Specification set my hand and scal, this First day of August,
One thousand eight hundred and seventy-four.
זוTAT
TATTA
AT
JOHN EDWIN SHERMAN. (L.S.)