CERTAIN IMPROVEMENTS CONNECTED WITH STEAM BOILERS AND FLUES
Year: 1880

page_text: LETTERS PATENT to Thomas Nutt, of Bromley-by-Bow, in the County of
Middlesex, Builder, for an Invention of "CERTAIN IMPROVEMENTS CONNECTED
WITH STEAM BOILERS AND FLUES."
PROVISIONAL SPECIFICATION left by the said Thomas Nutt at the Office
of the Commissioners of Patents on the 23rd February 1880.
THOMAS NUTT, of Bromley-by-Bow, in the County of Middlesex, Builder.
"CERTAIN IMPROVEMENTS CONNECTED WITH STEAM BOILERS AND FLUES."
According to the first part of this Invention I place at the back of the fire bars
a tank having pipes at top and bottom of same communicating with the boiler,
so as to form a circulation of the water from the boiler to the said tank, which
latter from its position being exposed to a very great heat will cause a saving of
time, and consequently of fuel, in generating steam. The second part of this
Invention consists in feeding the water to the boiler by means of a self acting
circulating feed tank, thereby dispensing with the injector or donkey engine as nt
present employed. This tank I may place at any convenient distance from the
boiler, and connect it therewith by means of circulating pipes; and the supply of
water is regulated by means of a ball cock fitted in the said tank. I also propose
to fit a guage on the said tank to indicate the level of water, so that it may be
compared with the gunge on the boiler. The third part of this Invention consists
in connecting the cleaning doors in the Hue together, so that they may all be
opened at once. This may be done by means of a lever connected loosely to each
door, and extending to the further end of the flue, so that by pulling the end
thereof all the doors will be opened at once from the outside of the fluc. It may
be found desirable in some cases not to connect the door under the first bridge, as
this may be opened easily from the front.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Nutt in the Great Seal Patent Office on the 23rd August
1880.
THOMAS NUTT, of Bromley-by-Bow, in the County of Middlesex.
IMPROVEMENTS CONNECTED WITH STEAM BOILERS AND FLUES."
" CERTAIN
According to the first part of this Invention I place at the back of the fire bars a
tank having pipes at top and bottom of same communicating with the boiler, so as
to form a circulation of the water from the boiler to the said tank, which latter
from its position being exposed to a very great heat will cause a saving of time,
and consequently of fuel, in generating steain. The second part of this Invention
consists in feeding the water to the boiler by means of a self acting circulating feed
tank, thereby dispensing with the injector or donkey engine as at present employed.
This tank I may place at any convenient distance from the boiler, and connect it
therewith by means of circulating pipes; and the supply of water is regulated by
means of a ball-cock fitted in the said tank. I also propose to fit a guage in the
said tank to indicate the level of water, so that it may be compared with the guage
in the boiler. The third part of this Invention consists in connecting the cleaning
doors in the flue together, so that they may all be opened at once.
This may be
done by means of a lever connected loosely to each door, and extending to the
further end of the flue, so that by pulling the end thereof all the doors will be
opened at once from the outside of the fluc. It may be found advisable in soine
cases not to connect the doors under the first bridge, as this may be opened easily
from the front.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shew a longitudinal section of the furnace and flue of a boiler with
my improvements adapted thereto.
Figure 2 shews section through the line A, B, Figure 1.
Figure 3 shews section through the line C, D.
Figure 4 shews an end clevation of a boiler.
At each of the above Figures I employ similar letters to denote the same parts.
A shews the water tank fitted at the back of the fire-bars. To this tank is
attached four pipes a, a, through which the water circulates to the boiler. D shews
a tank fixed outside the boiler. This tank is supplied with water from the main,
and the supply is regulated by the ball valve E.
B, B, shews the soot doors connected together by means of the lever C.
Having thus described the motive and object of my said Invention for "Certain
Improvements connected with Steam Boilers and Flues," and the manner of
carrying the same into practical effect, I would remark in conclusion that what
I claim as my Invention, and desire to secure by the hereinbefore in part recited
Letters Patent is,―
First. A tank placed at the back of the fire bars in combination with the circulating
pipes, substantially as and for the purpose set forth.
Second. The arrangement for feeding the boilor, substantially as set forth.
Third. Connecting the soot doors together, as and for the purpose set forth.
In witness whereof, I, the said Thomas Nutt, have hereunto set my hand
and seal, this Twenty-third day of August, in the year of our Lord One
thousand eight hundred and eighty.
THOMAS NIITTY G0)