IMPROVEMENTS IN AND APPLICABLE TO STEAM GENERATORS
Year: 1875

page_text: LETTERS PATENT to William Cooke and Daniel Mylchreest, of Liver-
pool, in the County of Lancaster, Marine Engineers, Architects,
and Surveyors, for the Invention of "IMPROVEMENTS IN AND APPLICABLE
TO STEAM GENERATORS."
Sealed the 9th June 1876, and dated the 23rd December 1875.
PROVISIONAL SPECIFICATION left by the said William Cooke and
Daniel Mylchreest at the Office of the Commissioners of Patents,
with their Petition, on the 23rd December 1875.
Wė, WILLIAM COOKE and DANIEL MYLCHREEST, of Liverpool, in
the County of Lancaster, Marine Engineers, Architects, and Surveyors,-
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
AND APPLICABLE TO STEAM GENERATORS," to be as follows :-
This Invention relates to horizontal steam generators, more par-.
ticularly to those used on board ships. The object is to obtain a
thorough, circulation of the water, so that the water beneath the flue or,
furnace shall be equally heated with the water above the said flue or

page_text: furnace, and the destructive effects, as regards wear and tear, resulting
from the unequal expansion and contraction of the upper and lower
parts thereby prevented.
For the above purpose we place in the water space of a boiler a jacket
or saddle, which extends round the flue or crown of the furnace down-
wards to near the bottom of the boiler. From or near the top of the
said jacket or saddle a pipe or pipes extends or extend above the water
line into the steam space. By employing the said parts in combination,
we obtain a rapid circulation of water from the bottom of the boiler up
between the jacket and the flue or furnace crown, thence into the steam
space.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Cooke and Daniel Mylchreest, in the
Great Seal Patent Office on the 23rd June 1876.
-
· TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
COOKE and DANIEL MYLCHREEST, of Liverpool, in the County of Lan-
caster, Marine Engineers, Architects, and Surveyors, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of December, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said William Cooke and Daniel
Mylchreest, Her special licence that we, the said William Cooke and
Daniel Mylchreest, our executors, administrators, and assigns, or such
others as we, the said William Cooke and Daniel Mylchreest, our exe-
cutors, 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
AND APPLICABLE TO STEAM GENERATORS," upon the condition (amongst
others) that we, the said William Cooke and Dániel Mylchreest, our
executors or administrators, by an instrument in writing under our, or
their; or one of our or their hands and seals, should particularly describe

page_text: our apparatus. Here d is the shell; e, flue; f, jacket or saddle en-
circling the upper half of e, and having attached at its lower ends tubes
or pipes, which reach near to, or, it may be, to the lowest internal
surface of d; g are pipes rising from f, which terminate in the steam
space. The length off in this type of steam generator may be varied,
as will be obvious.
Having now described the nature of our said Invention, and par-
ticularized the same in such manner that others may be enabled to make
steam generators with our improvements, or to apply such improvements
to steam generators already in use, we claim the combination in or to 1
horizontal steam generators, substantially as set forth.
In witness whereof, we, the said William Cooke and Daniel
Mylchreest, have hereunto set our hands and seals, the Twenty-
second day of June, in the year of our Lord One thousand eight
hundred and seventy-six.
]
In the presence of
JOHN LING,
Patent Office,
4, Clayton Square,
Liverpool.
WILLIAM COOKE.
(L.B.)
DANIEL MYLCHREEST.
(L.B.)