IMPROVEMENTS IN STOVES AND FURNACES FOR BURNING SOLID FUEL
Year: 1869

page_text: LETTERS PATENT to George Shaw, of Birmingham, in the County
of Warwick, Patent Agent, for the Invention of "IMPROVEMENTS IN
STOVES AND FURNACES FOR BURNING SOLID FUEL"-A cómniunication
from abroad by Louis Alexander Kettle, of Philadelphia, United
States of America.
Sealed the Sth March 1870, and dated the 15th September 1869.

page_text: figure proper to fit the body of the stove, and contracted internally at
or about its middle by means of a bulging or projecting part, the said
contracted part forming a support by which the burning fuel is partly
supported. The ordinary grate or bars only partially supporting the
burning fuel they do not wear out so rapidly as in stoves of the ordinary
construction. The contracted portion of the lining also causes a greater
draught. The spaces between the fire-bars are so narrow that only
dust and fine ashes can fall through. Instead of effecting the said con-
traction in the manner already described it may be effected in other
ways, for example, a ring of iron or other material may be fixed to the
ordinary cylindrical lining of fire-clay or supported on legs.
The said improvements consist further of a charging door on a level
with the top of the grate, through which door the cinders may be
dragged by means of a poker over an opening in a plate outside the
stove and on a level with the grate. The ashes fall during the dragging
of the cinders through the grate and the cinders freed from the ashes
fall through the said opening. Underneath the said plate and the
grate is a drawer divided into two compartments, in one of which the
ashes are received and in the other the cinders. The inner end of the
drawer is shovel shaped, so that any ashes falling during the absence of
the drawer into the box in which the drawer slides are taken up by it on
its being again put into its place.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Shaw in the Great Seal Patent Office on
the 12th March 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
SHAW, of Birmingham, in the County of Warwick, Patent Agent, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of September, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said George Shaw, Her special licence that
I, the said George Shaw, my executors, administrators, and assigns, or

page_text: such others as I, the said George Shaw, my executors, administrators,
and assigns, should at any time agree with, and no othiers, 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 STOVES AND FURNACES
FOR BURNING SOLID FUEL," a communication to me from abroad by Louis
Alexander Kettle, of Philadelphia, United States of America, upon
the condition (amongst others) that I, the said George Shaw, 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 saine to be filed in the
Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said George Shaw, do hereby declare
the nature of the said Invention, and in wliat manner the same is to
be performed, to be particularly described "
following statement thereof, that is to say:-
scertained in and by the
"
The said Invention consists of the improvements herein-after par-
ticularly described and illustrated in the accompanying Drawing in
stoves and furnaces for burning solid fuel.
I will describe and represent the said improvements as applied to a
stove.
Figure 1 is a vertical section of the said improvements applied to a
stove; Figure 2 is a perspective view of the said improvements showing
the fire-clay lining or cylinder in section; Figure 3 is a perspective.
view of the fire-clay lining or cylinder; Figure 4 is a perspective view
of the ash deposit drawer.
In the Drawings A, Figure 1, is the door for inserting the coal into the
fire chamber; B is the fire-clay lining or cylinder, which not only
answers the usual purpose of a fire-clay lining or cylinder, but also by
its bulge or projection serves to partially support the live coals, thus
preventing the rapid burning out of the grate C, which instead of
wholly supporting the burning coal as heretofore, as well as sifting the
ashes, merely separates the ashes from the coal, and has very little weight
upon it.
D is the clearing door cut through the fire-clay lining or
cylinder and side of the stove, through which the cinders are dragged

page_text: by a poker, and fall through the opening E into the section F¹ of the
receiving drawer F, while the ashes fall through the grate C into the
section F. The ashes may be emptied, while the unburnt ashes in F
may be returned to the fire through the door A. In order that the
cinders may be easily scraped from the grate C through the door D it
is necessary that the bottom of the said door D should be on a line or
nearly so with the top of the grate C. (The bulge of the fire-clay
lining or cylinder B relieving the grate and the burning fuel below the
said bulge of any heavy pressure admits of the more easy removal of
the cinders through the door D.) Or if preferred the cinders may be
scraped on to a shovel through the door D, and returned at once to the
fire through the door A instead of falling through the aperture E while
the ashes fall into F. By this means the fire is kept clear and free
from ashes without the labour of shaking as in other stoves, and by this
improvement all the cinders are burnt into fine ashes and no fuel wasted.
If while the drawer F is removed for emptying it any ashes should
drop into the box G which receives the drawer the said ashes are
immediately taken up by the shovel-shaped construction of the drawer,
Figure 4, when the drawer is returned to its place. Instead of the
bulge og projection in the fire-clay lining or cylinder B a throttle or
contracted passage may be secured in various other ways, such as
securing a single ring of iron or other suitable material to the inside
of the lining or cylinder B, or a ring or table of iron or other suitable
material with legs resting on the edge of the grate, or a cylinder or
collar with its bottom resting on the grate. Any of these devices or
their equivalents for forming a throttle or contracted passage for the
fuel to arch itself or be supported upon may be used, and by the said
bulge or contraction the draught is greatly increased.
Having thus described the said improvements, what I claim as new
and desire to secure by Letters Patent is,-
Firstly. The fire-clay lining or cylinder B having a bulge or pro-
jection for partially supporting the burning fuel, substantially as and for
the purposes described.
Secondly. The clearing door D above the fire-grate having its bottom
on a line or nearly on a line with the top of the said grate, substantially
as described.
Thirdly. The receiving drawer F with two sections for receiving the
ainders and achos. Pasmantively substantially as described

page_text: Fourthly. The combination of a stove or furnace lining or cylinder, a
throttle or contracted passage, a grate below the said throttle passage, and
an opening on a level with or above the grate.
In witness whereof, I, the said George Shaw, have hereunto set
my hand and seal, this Eighth day of March, in the year of our
Lord One thousand eight hundred and seventy.
Witness,
RICHARD SKERRETT,
7, Cannon Street,
Birmingham.
GEORGE SHAW. (L.S.)