IMPROVEMENTS IN WATER CIRCULATING FIRE BARS AND SMOKE PREVENTION
Year: 1884

page_text: We, DAVID RILEY of Young Street Mills, Girlington, Bradford, in the County of
York, Stuff Manufacturer, and WILLIAM LEE, of 150, Barkerend Road, of the same
place, Engineer, do hereby declare the nature of our invention for IMPROVEMENTS
IN WATER CIRCULATING FIRE BARS AND SMOKE PREVENTION, to be as follows:-
This invention relates to certain improvements in the fire bars and construction
of furnaces in boilers for generating steam and for warming purposes, and consists
in the first instance of drawing of water from the bottom or coolest part of the
boiler through the fire bars on to the top of the furnace crown, thus. ensuring a
very desirable circulation in boilers of the cornish and Lancashire type, and in
the second, of the arrangement of the furnace in order to ensure smoke
prevention.
$
Hitherto air for the purpose of combustion has been admitted under the bars,
and passed through the same and the fuel, and over the bridge at the back end of
the furnace.
In our invention we block up the space in front under the fire door, and we also
block up the back end of the furnace on the top of the bars, thus compelling the
air which is admitted through perforations in the door and frame work, to pass
through the fuel from the top to the under side of the bars, and forward thence to
the chimney in the ordinary way.
It will be readily understood, that without circulating water through the bars,
this arrangement of furnace: would not be practicable; the circulating is accom-
plished by forming the furnace bars hollow, securing them to hollow boxes one at
each end of the bars, and connecting the front box by two or more pipes to the
bottom portion of the boiler, thus admitting water from the coolest part of the
boiler, which is heated on passing through the bars, and is delivered to the crown
of the furnace by one or more pipes connected to the back box.
Dated this 16th day of December 1884
WAUGH & CHAPMAN,
Agents for the Applicant,
70, Chancery Lane, W.C.

page_text: We, DAVID RILEY, of Young Street Mills Girlington, Bradford; in the County of
York Stuff Manufacturer, and WILLIAM-LEE, of 150 Barkerend Road of the same
place Engineer do hereby declare the nature of this invention, and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:
This invention relates to certain improvements in the fire bars and construction
of furnaces in boilers for generating steam; and for warming purposes; and consists
in the first instance of drawing the water from the bottom or coolest part of the
boiler through the fire bars on to the. furnace tube crown, thus, ensuring a very
desirable circulation in boilers of the, Cornish, and Lancashire type; and in the 1
second, of the arrangement of the furnace in order to ensure the prevention of
smoke.
:
In the accompanying drawings Fig. 1. represents the front end elevation of an
ordinary two flued boiler fitted with our improved bars. Fig. 2 is a vertical
section through line a. b. and Fig. 3. is a sectional plan of the furnace; through 1
line c. d.
According to our invention we block up with a metal plate A, the space
underneath the furnace bars, and also block up with brickwork C, the back part of
the furnace; thus compelling the air which is admitted through the perforations in
the door and frame B, to pass through the fuel from the top of the fire to the 2
underside of the bars, and thence forward through the flues K, in the ordinary way
to the chimney.
It will be readily understood that without circulating water through the bars,
this arrangement of furnace would not be practicable; and in order to circulate the
water, we form the furnace bars D, hollow, and secure them at each end by brazing
The front
or other well known means to, the respective hollow. boxes. E and F.
box E, is shewn connected by pipe G to the bottom side of furnace flue: K, and the
back box F, by pipe G₁ to the furnace, flue crown, thus completeing a passage for
the water to circulate from the coolest or bottom part of, the boiler to the space
above the furnace crown. The water on passing through the hollow furnace
bars D, is heated, and as a natural consequence rises through the pipe G₁ to the
space above the furnace crown, water from the bottom part of the boiler taking its
place through the pipe G, thereby improving the circulation so much desired in
single or two flued boilers..
By admitting air into the furnace above the fire in the manner described, the
gases driven off the coal by the live fire below; are compelled to pass down through
the fire by which a complete combustion of the smoke is effected,
5

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
The combination of the hollow furnace bars with the end boxes and pipes G
and G fitted in the flue or flues of steam boilers substantially in the manner and
for the purpose as hereinbefore described and as illustrated by the accompanying
drawings.