IMPROVED MEANS OF HEATING THE FEED WATER SUPPLIED TO STEAM BOILERS
Year: 1867

page_text: LETTERS PATENT to Thomas Dawson Walker, of Longwood, near Hud-
dersfield, in the County of York, Cloth Finisher, for the Invention of
"IMPROVED MEANS OF HEATING THE FEED WATER SUPPLIED TO STEAM
BOILERS."
Sealed the 17th January 1868, and dated the 18th July 1867.
PROVISIONAL SPECIFICATION left by the said Thomas Dawson Walker
at the Office of the Commissioners of Patents, with his Petition,
on the 18th July 1867.
I, THOMAS DAWSON WALKER, of Longwood, near Huddersfield, in the
County of York, Cloth Finisher, do bereby declare the nature of the said
Invention for "IMPROVED MEANS OF HEATING THE FEED WATER SUPPLIED TO
STEAM BOILERS," to be as follows:-
This Invention consists in conducting or forcing the feed water into the
boiler through pipes placed along the sides and back end of each furnace or
fire-box of a steam boiler or steam generator, by which the temperature of
the said feed water may be raised to the same or nearly the same temperature

page_text: as the water and steam in the boiler. The discharge end of the feed pipe
is connected by a feed valve to the boiler as usual, and a tap or valve is
employed for regulating and stopping the supply. A branch pipe with a tap
is also applied to these feed pipes so as to form a connection between the
bottom and top part of the boiler, in order to promote a circulation of the
water in the boiler when the feed water is stopped off.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Dawson Walker in the Great Seal Patent Office
on the 17th January 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
DAWSON WALKER, of Longwood, near Huddersfield, in the County of York,
Cloth Finisher, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighteenth day of July, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Thomas Dawson Walker, Her special licence, that I, the said
Thomas Dawson Walker, my executors, administrators, and assigns, or such
others as I, the said Thomas Dawson Walker, my 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 In-
vention for "IMPROVED MEANS OF HEATING THE FEED WATER SUPPLIED TO
STEAM BOILERS," upon the condition (amongst others) that I, the said Thomas
Dawson Walker, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly 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 Patent Seal Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Dawson Walker, do hereby
declare the nature of my said Invention, and in what manner the same

page_text: generators through pipes placed along the sides and back ends of the furnaces
or fire-boxes thereof substantially as herein shewn and described.
In witness whereof, I, the said Thomas Dawson Walker, have hereunto
set my hand and seal, this Fifteenth day of January, One thousand
eight hundred and sixty-eight.
THOMAS DAWSON WALKER. (L.B.)
Signed, sealed, and delivered by the
within-named Thomas Dawson
Walker, in the presence of
W* TASKER,
Patent Agent,
Halifax & Bradford.