IMPROVEMENTS IN FURNACES AND STEAM BOILERS FOR ECONOMISING FUEL
Year: 1878

page_text: LETTERS PATENT to Thomas Litton and John Davies, both of Warrington, in
the County of Lancaster, for the Invention of "IMPROVEMENTS IN FURNACES
AND STEAM BOILERS FOR ECONOMISING FUEL."
Sealed the 3rd May 1878, and dated the 27th February 1878.
PROVISIONAL SPECIFICATION left by the said Thomas Litton and John
Davies at the Office of the Commissioners of Patents on the 27th February
1878.
THOMAS LITTON and JOHN DAVIES, both of Warrington, in the County of
Lancaster. " IMPROVEMENTS IN FURNACES AND STEAM BOILERS FOR ECONOMISING
FUEL."
The object of this Invention is to heat the feed water of steam boilers by causing
it to pass through a pipe (or pipes) in the furnace on its passage from the tank or
feed pump to the interior of the boiler.
The cold water feed pipe, instead of passing directly into the boiler, enters the
furnace at one side of the door, and after passing round the furnace once or more
times passes out at the other side, and then upwards into the boiler; the said feed
pipe being supplied with the usual stop valve and taps and an overflow pipe. Thus
the feed water instead of being admitted cold into the boiler becomes heated by
passing round the furnace in the feed pipe, and by thus feeding the boiler with
hot water, the generation of steam does not become checked, and a considerable
economy of fuel is effected.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Litton and John Davies in the Great Seal Patent Office on
the 27th August 1878.
THOMAS LITTON and JOHN DAVIES, both of Warrington, in the County of
Lancaster. "IMPROVEMENTS IN FURNACES AND STEAM BOILERS FOR ECONOMIZING
FUEL."
The object of this Invention is to heat the feed water of steam boilers by causing
it to pass through a pipe (or pipes) in the furnace on its passage from the tank or
feed pump to the interior of the boiler.
Such being the nature and object of our said Invention, we will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood I
have annexed hereunto a Sheet of Drawings illustrative thereof, and have marked
the same with Figures and letters of reference corresponding with those in the
following explanation thereof:—
Fig. 1 in the annexed Drawings is an end view, and Fig. 2 a longitudinal section
of a boiler and furnace showing our Invention as applied thereto.
a, a, is the boiler, and b, b, the furnace. The cold water feed pipe c, c, instead of
passing directly into the boiler enters the furnace at one side of the door, and after
passing round the furnace once or more times passes out at the other side, and then
upwards into the boiler a, a; the said feed pipe being supplied with the usual stop
valve d, d, and taps e, e, and an overflow pipe f. f. Thus the feed water instead of
being admitted cold into the boiler becomes heated by passing round the furnace in
the feed pipe, and by thus feeding the boiler with hot water the generation of
steam does not become checked, and a considerable economy of fuel is effected.
When it is not convenient to supply the boiler through the pipe c, c, by means of
the pump it may be fed from a tank through the pipe g, g, which is provided with
a tap h, h.
'
Having now described the nature and object of our said Invention, together with
the manner in which the same is to be or may be performed or carried into
practical effect, we wish it to be understood that we claim as our Invention, the
arrangement of pipes for passing the feed water through the furnace, so as to
become heated before entering the boiler, substantially as herein-before described
and shown on the Drawings annexed.
In witness whereof, I, the said John Davies (on behalf of myself and the said
Thomas Litton), have hereunto set my hand and seal, this Twenty-third
day of August, in the year of our Lord One thousand eight hundred and
seventy-eight.
JOHN DAVIES. (L.S.)