CERTAIN IMPROVEMENTS IN STEAM BOILERS
Year: 1869

page_text: LETTERS PATENT to William Hargreaves, of the Soho Iron Works,
Bolton, in the County of Lancaster, for the Invention of "CERTAIN
IMPROVEMENTS IN STEAM BOILERS,"
Scaled the 14th June 1870, and dated the 18th December 1869.
!
PROVISIONAL SPECIFICATION left by the said William Hargreaves
at the Office of the Commissioners of Patents, with his Petition, on
the 18th December 1869.
I, WILLIAM HARGREAVES, of the Soho Iron Works, Bolton, in the
County of Lancaster, do hereby declare the nature of the said Invention
for "CERTAIN IMPROVEMENTS IN STEAM BOILERS," to be as follows:-
My Invention is applicable to steam boilers in which one or more
Ilues are employed, and it consists in applying to each flue of such
boilers a horizontal or nearly horizontal pipe, with two rounded or other
shaped ends; one of these ends is secured to the lower part of the flue,
and the other end is secured to the upper part of the flue.
The water
[Price 8d.]

page_text: from the lower part of the boiler is thus at liberty to circulate through
the pipe to the upper part thereof, and as the one end of the pipe is
brought near to the bridge the products of combustion impinge and act
with great force on the pipe, thereby rapidly heating the water and
generating steam, which is carried by the current of water into the upper
portion of the boiler.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Hargreaves in the Great Seal Patent
Office on the 17th June 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HARGREAVES, of the Soho Iron Works, Bolton, in the County of
Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of December, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Hargreaves, Her special licence
that I, the said William Hargreaves, my executors, administrators, and
assigns, or such others as I, the said William Hargreaves, 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 inake, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "CERTAIN IMPROVEMENTS IN
STEAM BOILERS," upon the condition (amongst others) that I, the said
William Hargreaves, my executors or administrators, by an instrument
in writing under my, or their, or one of 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 I, the said William Hargreaves,. do hereby
declare the nature of my said Invention, and in what manner the same

page_text: Having thus stated the nature of my Invention and described a con-
venient manner of performing the same, I declare that I claim, the
pipe e when placed in the flue of a steam boiler, as described.
In witness whereof, I, the said William Hargreaves, have hereto
set my hand and seal, this Fourteenth day of June, One thousand
eight hundred and seventy.
W. HARGREAVES. (L.S.)