IMPROVEMENTS IN MEANS OR APPARATUS FOR PROMOTING THE COMBUSTION OF FUEL IN FURNACES OF STEAM BOILERS, DYER'S OR BREWER'S PANS, AND OTHER FURNACES, WHEREBY SMOKE IS PREVENTED AND FUEL ECONOMIZED
Year: 1865

page_text: LETTERS PATENT to Benjamin Robinson, of Stainland, near Halifax, in
the County of York, Engineer, and Joseph Varley, of Mold Green, near
Huddersfield, in the same County, General Agent, for the Invention of
"IMPROVEMENTS IN MEANS OR APPARATUS FOR PROMOTING THE COMBUSTION OF
FUEL IN FURNACES OF STEAM BOILERS, DYER'S OR BREWER'S PANS, AND OTHER
FURNACES, WHEREBY SMOKE IS PREVENTED AND FUEL ECONOMIZED."
Sealed the 26th January 1866, and dated the 31st July 1865.
PROVISIONAL SPECIFICATION left by the said Benjamin Robinson and
Joseph Varley at the Office of the Commissioners of Patents, with
their Petition, on the 31st July 1865.
We, BENJAMIN ROBINSON, of Stainland, near Halifax, in the County of
York, Engineer, and JOSEPH VARLEY, of Mold Green, near Huddersfield, in
the same County, General Agent, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MEANS OR APPARATUS FOR PROMOTING THE
COMBUSTION OF FUEL IN FURNACES OF STEAM BOILERS, DYER's ok BREWER'S PANS;
AND OTHER FURNACES, WHEREBY SMOKE IS PREVENTED AND FUEL ECONOMIZED," to
be as follows:-
This Invention consists in the application of a perforated door within the
ordinary plain door of such furnaces, both being hinged to the frame in such

page_text: manner that after the charge of fuel the perforated door may be closed and
the plain door left open for any suitable length of time and then closed.
Also in the application of a series of steam jets or perforated pipes-over and
within the door of the furnace, and also under the grate bars in the ash-pit at
the feeding end of the furnace with supply pipes having taps thereto which
are capable of being regulated so as to discharge more or less steam into the
furnace according to requirement.
And also in the employment of a hollow bridge having perforations in the
back part thereof towards the flame bed and a large opening in the front part
of the said bridge under the grate bars towards the ash-pit, which is provided
with a hinged door or flap capable of being opened or closed by a rod attached
thereto and extending to the front of the furnace, where it can be operated by
the attendant to admit air in more or less quantities as may be required into
the hollow bridge, from whence it will pass through the perforations to the
*flame bed.
. SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Benjamin Robinson and Joseph Varley in the Great Seal
Patent Office on the 31st January 1866.
TO, ALL TO WHOM THESE PRESENTS SHALL COME, we, BENJAMIN
ROBINSON, of Stainland, near Halifax, in the County of York, Engineer, and
JOSEPH VARLEY, of Mold Green, near Huddersfield, in the same County,
*General Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirty-first day of July, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Benjamin Robinson and Joseph Varley. Her special licence that we,
the said Benjamin Robinson and Joseph Varley, our executors, administrators,
and assigns, or such others as we, the said Benjamin Robinson and Joseph
Varley, our 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 vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MEANS
OB APPARATUS FOR PROMOTING THE COMBUSTION OF FUEL IN FURNACES OF STEAM
BOILERS, DYEE'S OR BREWER'S PANS, AND OTHER FURNACES, WHEREBY SMOKE IS

page_text: PREVENTED AND FUEL ECONOMIZED," upon the condition (amongst others) that
we, the said Benjamin Robinson and Joseph Varley, our executors or adminis-
trators, by an instrument in writing under our, or their, or one of our or 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 calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Benjamin Robinson and Joseph Varley,
do bereby 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 and accompanying Sheet of Drawings (that is.
to say):-
This Invention consists in the application of a perforated door within the
ordinary plain door of such furnaces, both being hinged to the frame in such
manner that after the charge of fuel the perforated door may be closed and
the plain door left open for any suitable length of time and then closed.
Also in the application of a series of steam jets or perporated pipes under
the grato bars in the ash-pit at the feeding end of the furnace with a supply
pipe having a tap thereto which is capable of being regulated so as to
discharge more or less steam under the furnace according to requirement.
And also in the employment of a hollow bridge having perforations in
the back part thereof towards the flame bed and a large opening in the front
part of the said bridge under the grate-bars towards the ash-pit, which is
provided with a hinged door or flap capable of being opened or closed by a rod
attached thereto and extending to the front of the furnace, where it can be
operated by the attendant to admit air in more or less quantities as may be
required into the hollow bridge, from whence it will pass through the
perforations to the flame bed.
•
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a front elevation of an ordinary two-flued or double fire-box
boiler with our improvements applied thereto, and Fig. 2 is a vertical and
longitudinal section of the same taken through the dotted line A to B in
Fig. 1. C are ordinary plain furnace doors, and D are perforated doors

page_text: hinged) be placed so as to slide on pins fixed outside the perforated doors, and
thereby admit of being drawn off or away from the perforations to any suitable
distance to admit more or less air, or may be pushed close up against them to
prevent admission of air, as required. E is a copper pipe connected to the
steam chamber, which pipe is provided with a tap F and is cranked or bent a
little within each of the ash-pits, and it is perforated on the side towards the
grate bars, so that by opening the tap F more or less steam can be blown
under and against the grate bars in greater or lesser quantities according to
requirement. G is a perforated iron plate forming a back part to the hollow
bridge H, and I is an open frame fixed in the front wall of the bridge to which
is hinged a door or flap J, having a rod K attached which extends to the
front of the ash-pit with a handle and catches or notches thereon to hold in a
catch plate M, fixed to the dead plate, by means of which the attendant can
open and set the door or flap in any suitable position or extent of opening,
whereby more or less air may be admitted to the hollow bridge and through
the perforations to the flame bed N as may be required. Although we have
only shewn these our improvements as applied to a fire-box boiler, yet it will
be evident to all who are practically conversant with the subject matter that
this Invention may be applied to other kinds of boilers, also in part to the
furnaces of dyer's or brewer's pans and similar furnaces.
In witness whereof, I, the said Benjamin Robinson for and on behalf of
myself and the said Joseph Varley, have hereunto set my hand and
seal, this Twenty-ninth day of January, One thousand eight hundred
and sixty-six.