IMPROVEMENTS IN STEAM BOILERS OR APPARATUS FOR GENERATING STEAM."
Year: 1868

page_text: LETTERS PATENT to James Fawcett and Joseph Addey Fawcett, of
Wakefield, in the County of York, Corn Millers, for the Invention
of "IMPROVEMENTS IN STEAM BOILERS OR APPARATUS FOR GENERATING
STEAM."
PROVISIONAL SPECIFICATION left by the said James Fawcett and
Joseph Addey Fawcett at the Office of the Commissioners of
Patents, with their Petition, on the 20th April 1868.
We, JAMES FAWCETT and JOSEPH ADDEY FAWCETT, of Wakefield,
in the County of York, Corn Millers, do hereby declare the naturo of
the said Invention for "IMPROVEMENTS IN STEAM BOILERS, OR APPARATUS
FOR GENERATING STEAM," to be as follows:-
This Invention relates to that class of steam boiler which is composed..
or constructed of a series of pipes or tubes arranged and connected
together so that water is fed at one part, circulates through the whole
series, and the steam as or when generated passed or drawn off at
another part.

page_text: Our improvements consist in constructing, arranging, and setting them
so that we can feed them with fuel at several parts or places, whereby
a more equal or uniform heating or application of heat with economy
of fuel is obtained than heretofore. We construct these boilers of pipes
or tubes, chiefly placed in a vertical position with horizontal connections,
leaving spaces betwixt them, and arranged in suitable form to be set or
surrounded with brickwork except being provided with grates underneath
in the somewhat usual manner, and a series of openings or appertures
being formed in the top for the supply of fuel, and one or more openings
at bottom above the grates to enable the fircs to be stirred and cleaned.
These openings may be provided with doors or lids or fire-brick plugs
as found most desirable.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said James Fawcett and Joseph Addey Fawcett in the
Great Seal Patent Office on the 20th October 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
FAWCETT and JOSEPH ADDEY FAWCETT, of Wakefield, in the County
of York, Corn Millers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of April, in the year
of our Lord One thousand eight hundred and sixty-eight, in the
thirty-first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said James Fawcett and Joseph Addey
Fawcett, Her special licence that we, the said James Fawcett and
Joseph Addey Fawcett, our executors, administrators, and assigns, or
such others as we, the said James Fawcett and Joseph Addey Fawcett,
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 STEAM BOILERS OR APPARATUS FOR GENERATING STEAM,"
upon the condition (amongst others) that we, the said James Fawcett
and Joseph Addey Fawcett, our executors or administrators, by an
instrument in writing under our, or their, or one of our or their hands

page_text: 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 James Fawcett and Joseph Addey
Fawcett, 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 and accompanying
Sheet of Drawings (that is to say) :-
This Invention relates to that class of steam boiler which is composed
or constructed of a series of pipes or tubes arranged and connected
together so that water is fed at one part, circulates through the whole.
series, and the steam as or when generated is passed or drawn off at
another part.
Our improvements consist in constructing, arranging, and setting
them so that we can feed them with fuel at several parts or places,
whereby a more equal or uniform heating or application of heat with
economy of fuel is obtained than heretofore. We construct those boilers
of pipes or tubes chiefly placed in a vertical position with horizontal
connections, leaving spaces betwixt them, and arranged in suitable form
to be set or surrounded with brickwork, except being provided with
grates underneath in somewhat usual manner, and a series of openings
or apertures being formed in the top for the supply of fuel, and one
or more openings at bottom above the grates to enable the fires to be
stirred and cleaned. These openings may be provided with doors, or lids
or fire-brick plugs as found most desirable.
DESCRIPTION OF THE DRAWINGS.

page_text: These
bottoms, also a circulating pipe D connecting top and bottom parts
thereof; E are the grate bars of the furnace or fire-place F.
pipes constituting the boiler or steam generator are almost surrounded
with brickwork as shewn in the Drawings, the top being formed with
openings G for supplying fuel to the furnace, each provided with a
portable plug of fire-clay or metal. H are openings or doorways for
stirring and cleaning the fire; I are openings or doorways for clearing
away the ashes from the ashes pit J; and K is the flue from the
furnace to the chimney.
It will be percieved that by this Invention the fuel can be fed in small
quantities at one or more places at a time, or by mechanical arrange-
-ment the whole series may be fed simultaneously, and the supply may
be regulated as required according to the state of combustion thereof,
also one or more of the plugs may be left out for the admission of
air if necessary, or the plugs may be perforated for that purpose; by
this means a more equal heating or uniform application of heat with
economy of fuel is obtained than heretofore.
We would now observe that although we have shewn and described
what we consider to be the best construction and arrangement of this
class of boiler or steam generator and method of feeding or supplying
fuel thereto, yet modifications may be made therein without departing
from the essential features of this Invention, as by having a series of
openings through the sides of the brickwork surrounding the generator
for the introduction of the fuel. Also in the application of this
Invention to this class of boilers or steam generators now in use
where the grate bars are not underneath the pipes but in a fire-box
to the front or side thereof, which are now fed with fuel through one
or two ordinary doorways and the flame travelling horizontally amongst
the said pipes, it would be advantageous to form openings through
the top or roof of such fire-boxes for feeding fuel thereto as herein
explained.
Having thus described the nature of our said Invention, and shewn
by Drawings how the same is to be or may be performed or carried
into practical operation, we would have it understood that we do not
confine or restrict ourselves to the particular construction or arrange-
ment and manner of setting of the pipes or apparatus for generating
steam as herein shewn and described, nor do we make any claim for
constructing steam generators of pipes or tubes, such not being new;

page_text: but what we claim as our Invention and believe the same to be
new is,―
Firstly. The so constructing, arranging, and setting this class of
steam generators that fuel may be fed at several parts or places to the
furnace in manner substantially as shewn and described.
Secondly. The method of feeding fuel to the furnaces of such steam
generators through several or a series of openings or apertures
separately or simultaneously and which may be opened or closed at
pleasure either separately or simultaneously.
In witness whereof, I, the said Joseph Addey Fawcett, for and on
behalf of myself and the said James Fawcett, have hereunto
set my hand and seal, this Seventeenth day of October, in the
year of our Lord One thousand eight hundred and sixty-
eight
JOSEPH ADDEY FAWCETT. (L.S.)
Signed, sealed, and delivered by
the within-named Joseph Addey
Fawcett, in the presence of
W. TASKER,
Patent Agent,
Halifax & Bradford.