IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS FOR THE GENERATION OF STEAM
Year: 1873

page_text: LETTERS PATENT to William Housley, of Hyde, in the County of
Chester, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION
OF BOILERS FOR THE GENERATION OF STEAM.”
Sealed the 12th December 1873, and dated the 27th August 1873.
PROVISIONAL SPECIFICATION left by the said William Housley
at the Office of the Commissioners of Patents, with his 'Petition,
on the 27th August 1878.
I, WILLIAM HOUSLEY, of Hyde, in the County of Chester, do hereby
declare the nature of the said Invention for " IMPROVEMENTS IN THE
CONSTRUCTION OF BOILERS FOR THE GENERATION OF Steam," to be as follows:-
This Invention is intended to be applied to what are well known aş
Cornish boilers, formed with an internal flue (or flues) running longi-
tudinally from one end to the other, the objects of the Invention being
to obtain an increased heating surface, and thus accelerate the gene-
ration of steam, and economize the amount of fuel consumed.
The Invention consists principally in the application of a suitable
number of water tubes running longitudinally through the flue (or flues),

page_text: and communicating at one end with the water space in the boiler, and
at the other end with the steam space therein above the water level. I
prefer to connect these water tubes with the water space at the rear end
of the boiler by tapping, rivetting, or otherwise fixing them into the
upper side of the flue, at the end furthest from the furnace. I then
bring the tubes forward just beneath the crown or upper part of the flue
to the front, and after carrying them out through the front plate above
the door (or doors) bend them upwards and tap, rivet, or otherwise
fix their other ends into the end plate of the boiler above the water
. line.
These tubes may be made of iron, copper, or other suitable metal or
alloy, and will be found, to cause a rapid and constant circulation of the
water in the boiler and to accelerate or increase the generation of
steam, and to economize the amount of fuel required to a very consider-
able degree.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Housley in the Great Seal Patent
Office on the 27th February 1874.
.TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HOUSLEY, of Hyde, in the County of Chester, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of August, in the
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Housley, Her
special license, that I, the said William Housley, my executors, adminis-
trators, and assigns, or such others as I, the said William Housley,
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 Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS FOR THE GENERATION OF
STEAM," upon the condition (amongst others) that I, the said William

page_text: Housley, 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 Housley, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement and accompanying Drawings (that is
to say) :-
This Invention is intended to be applied to what are well known as
Cornish boilers, formed with an internal flue (or flues) running longi-
tudinally from one end to the other, the objects of the Invention being
to obtain an increased heating surface, and thus accelerate the gene-
ration of steam, and economize the amount of fuel consumed.
The Invention consists principally in the application of a suitable
number of straight water tubes running longitudinally through the flue
(or flues), and communicating at one end with the water space in the
boiler, and at the other end with the steam space therein above the
water level. I prefer to connect these water tubes with the water space
at the rear end of the boiler by tapping, rivetting, or otherwise fixing
them into the upper side of the flue, at the end furthest from the
furnace, or into a pocket leading therefrom. I then bring the tubes
forward in a straight line just beneath the crown or upper part of the
flue to the front, and after carrying them out through the front plate
above the door (or doors) bend them upwards and tap, rivet, or other-
wise fix their other ends into the end plate of the boiler above the water
line.
The tubes may be made of iron, copper, or other suitable metal or
alloy, and will be found to cause a rapid and constant circulation of the
water in the boiler, and to accelerate or increase the generation of steam,
and to economize the amount of fuel required to a very considerable
degree, and being made quite straight they can be easily cleaned out
from time to time by means of steel scrapers.
Such being the nature and object of the said Invention I will now
proceed to describe more in detail the manner in which the same is to

page_text: 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 Drawing is a longitudinal section, Fig. 2, a
front view, and Fig. 3, a transverse section of a Cornish boiler, with my
Invention shown as applied thereto.
a, a, is the boiler, and b, b, the flue; c, c, are four water tubes running
longitudinally in a straight line through the fluc, just beneath the crown ·
thereof, and communicating at one end direct with a pocket d, d,
extending downward into the flue from the water space of the boiler,
and at the other or outer end by means of short vertical tubes e, e, and a
bent tube f,f, with the steam space of the boiler above the water level:
The extreme outer ends of the tubes c, c, are provided with screwed 1
metal caps g, g, for the purpose of affording facility for cleaning them.
out at any time by means of a steel scraper.
Having now described the nature and object of my said Invention
together with the manner in which the same is to bo or may be per-
formed or carried into practical effect, I wish it to be understood that I
claim as my Invention the employment, for the purposes herein-before
specified, of a series of straight water tubes running along just beneath
the crown of the flue, and communicating at one end by means of a
pocket or otherwise with the water space in the boiler, and at the other
or outer end with the steam space of the same, such tubes being pro- 2
vided with screw caps or other similar appliances at the outer extremity
to allow of their being readily cleaned out by a scraper when required.
In witness whereof, I, the said William Housley, have here-
unto set my hand and seal, this Twenty-fifth day of February,
in the year of our Lord One thousand eight hundred and seventy- 3
four