IMPROVEMENTS IN BOILERS AND FURNACES
Year: 1871

page_text: LETTERS PATENT to Ellis Butterworth, of Calder Cottage, near
Rochdale, and John Heap, of Providence Mill, Milnrow, near
Rochdale, in the County of Lancaster, for the Invention of
"IMPROVEMENTS IN BOILERS AND FURNACES."
Sealed the 12th April 1872, and dated the 13th October 1871.
PROVISIONAL SPECIFICATION left by the said Ellis Butterworth and
John Heap at the Office of the Commissioners of Patents, with
their Petition, on the 13th October 1871.
We, ELLIS BUTTERWORTH, of Calder Cottage, near Rochdale, and
5 JOHN HEAP, of Providence Mill, Milnrow, near Rochdale, in the
County of Lancaster, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN BOILERS AND FURNACES," to be as follows:-
"
-

page_text: consists in forming ribs or projections on the sides of vertical boilers
or fire-boxes, and on the top and sides of the fire-boxes of horizontal
or saddle boilers.
Secondly. In furnaces where the fuel is caused to pass through them
by moving fire-bars, we propose to have stationary fire-bars containing 5
water between the moving bars. We also propose to mount a series of
rakes under the bars to draw the clinkers from behind the furnace, and
where a fan is used to assist the draft we propose to blow the air into
an open ash-pit under the bars.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Ellis Butterworth and John Heap in the Great
Seal Patent Office on the 13th April 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ELLIS
BUTTERWORTH, of Calder Cottage, near Rochdale, and JOHN HEAP, of
Providence Mill, Milnrow, near Rochdale, in the County of Lancaster,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of October, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Ellis Butterworth and John Heap,
Her special license that we, the said Ellis Butterworth and John
Heap, our executors, administrators, and assigns, or such others as
we, the said Ellis Butterworth and John Heap, 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
BOILERS AND FURNACES," upon the condition (amongst others) that we,
the said Ellis Butterworth and John Heap, our executors or adminis-
trators, by an instrument in writing under our, or their, or one of
their hands and scals, should particularly describe and ascertain the

page_text: to the action of the fire than in an ordinary furnace, and thereby
economise fuel.
Figures 5 and 6 are sections of a fluc of a boiler such as used for
generating steam, and part of a furnace with the second part of our
Invention applied. a is the shell of the flue; b are solid grate bars 5
which move backwards and forwards to carry the fire from the front to
tho back of the furnace; these may be actuated the same as those
known as Vicars'; c, are stationery grate bars containing water, tho
water may be supplied to them from a reservoir outside the boiler, and
the steam as it is generated pass through holes in the sides of the bars, 1
and thence up through the fire; or the water may pass from the boiler in
at one end of the bars and thence out of tho other end into the boiler
again (the same as in the furnace known as Haworth and Horsfall's);
d are the supports that carry the firc-bars; is the water bridge under
which the clinkers and ashes are pushed by the bars 6 into the ash-pit;
ŋ is a rod which slides backwards and forwards through holes in
projections on the supports d. This rod may be worked from any
convenient place; to this rod are fastened links h, to which are
suspended the rakes i, which as the rod g moves backwards and forwards
draws the clinkers and ashes from the back of the furnace. is a pipo
connected to a fan or other blowing engine in any convenient way, and
through this pipe is blown air into an open ash-pit under the bars, and
thus a greater quantity of air may be caused to pass through the fire.
Having now described the nature of the said Invention, and how it
may be carried into effect, we wish it to be understood that we do not
limit ourselves to the details herein set forth, but we claim,―
First. Forming ribs or projections to absorb the heat on the sides of
vertical boilers or fire-boxes, and on the top and sides of the fire-boxes
of horizontal or saddle boilers used for heating water, for warming
buildings, and other purposes.
Secondly. Applying stationary fire-bars containing water between
moving bars in furnaces where the fuel is caused to pass through
them.
Thirdly. Mounting a series of rakes under the fire-bars to draw the
clinkers from behind furnaces whero the fuel is caused to pass through

page_text: Fourthly. Blowing air into an open ash-pit under the bars to assist
the draft in furnaces where the fuel is caused to pass through them.
In witness whereof, we, the said Ellis Butterworth and John Heap,
have hereunto set our hands and seals, this Twelfth day of April,
in the year of our Lord One thousand eight hundred and seventy-