Improvements in Economising Fuel and Consuming Smoke in Boilers and all enclosed Furnaces as follows
Year: 1886

page_text: Date of Application, 18th Aug., 1886.
Complete Left, 16th May, 1887.
Complete Accepted, 12th July, 1887.
WILLIAM JOHN WILLIAMSON of 10 Nile Street, Deptford, in the County of Kent,
Engineer does hereby declare the nature of this invention to be as follows:-
Improvements in Economising Fuel and Consuming Smoke in Boilers and all
enclosed Furnaces as follows:-This invention relates to improvements in the
Furnaces of Steam Boilers, metallurgical & other like Furnaces in which flues are
The
employed for carrying away smoke and other products of Combustion.
improvements consist of certain arrangements of perforated bricks and air chambers
introduced into. bridges beyond the fire bars whereby combustion is promoted and
smoke consumed which results in the total exclusion of cold air, coming in contact
with the heated surface of the Boiler.
The arrangement of our improvements to the steam Boiler are as follows:-A
hollow bridge is fixed immediately beyond the fire bars with a door underneath same
to which is attached a rod connected with an Automatical Cistern affixed to front side
of Boilor. A second hollow chamber suspended bridge is built beyond the first
bridge with chambers corresponding to that of the first bridge a pipe connected from
the first bridge which converges into two pipes leading up into the chamber of the
suspended bridge. The admission of hot air is controlled by the aforesaid rod
working direct from the Automatic Cistern. The arrangement of the Cistern is as
follows: A Cistern of suitable dimensions is fixed in combination with a smaller
interior cistern working on slides with a valve at bottom to allow of the regular
admission of water which is contained in the larger cistern. After the furnace has
been fired and the firedoor closed, the interior cistern, having a tap at the bottom side
for the outlet of the said water gradually rises and revolves a short lever which is
connected, through the outer cistern, with the rod leading to the air chamber, under
the fire bars, thus giving time for the cold air to become sufficiently heated and
effectually consuming the Smoke.
J
At 1000

page_text: Fuel Economising and Smoke Consuming Apparatus.
I, WILLIAM JOHN WILLIAMSON of 18 St. Johns Road, Deptford in the County of
Kent, 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 statenient :-
My Invention relates to Improvements in the Furnaces of Steam Boilers, Furnaces
for the conversion of Iron into Steel and of close Furnaces having a flue to carry
away Smoke or the products of combustion. The Invention consists of an arrangment,
of perforated bricks and air chambers introduced into two hollow bridges beyond the
grate bars whereby combustion is promoted and the Smoke consumed and where
applied to Steam Boilers it effectually prevents the disadvantage of admitting cold air
in contact with the hot surface of the boiler. The construction of same, as applied to
Steam Boilers is as follows:-A bridge immediately beyond the grate bars is built
hollow with a door below the grate bars for the admission of air the same being
regulated by an Automatic cylinder applied to the side of Boiler and connectol with
the fire door by a crank and rod hereinafter described. The aforesaid bridge has a
row of perforations (formed with bricks specially made and fitted) on that side of the
bridge remote from the fire to allow the escape of air intended to mingle with the
flame and smoke. At a specified distance (according to size of Boiler) from the first
bridge is a second and similar hollow hanging bridge built upon piers up from the
Boiler bottom. This said bridge has similar perforations facing those of the first
bridge for the exit of air which is supplied by a pipe connecting the air chamber of
the second bridge with that of the first. The amount of air introduced into the
hollow chambers of the bridges is arranged by the opening and closing of the hanging
door beneath the grato bars. This door is worked by a rod leading beneath the fire
bars to a slot immediately under the furnace door and that rod having a catch,
which when drawn out, lodges in the said slot and is lifted out of the same
by another rod communicating and worked by the aforesaid Automatic Cylinder
as follows: This apparatus consists of a cylinder of suitable dimension, containing
water and also a smaller cylinder which has a valve at the base and a tap about half
an inch from the bottom to allow the water to flow in and escape as the cylinder rises
and falls. This movement of the cylinder is arranged thus-It is suspended to a
cross bar fixed to top of outer cylinder by two chains, on the other end of one is
attached a balance weight slightly lighter than the cylinder itself, the other runs over
a wheel down to a similar cross bar at bottom of outer cylinder which is connected by
a rod to both Furnace door & draught door beneath the grate bars. When the fire
door is opened a chain attached to a wheel at bottom of fire door hinge and which
runs over two wheels situated midway between fire door and Automatic cylinder and
connected to the rod, is tightened and the rod is turned and revolves the wheel
attached to same, inside cylinder over which a chain runs to a wheel on top cross har
and attached to the smaller cylinder and draws up the smaller cylinder. After the

page_text: Furnace has been fired and the fire door closed it releases the chain attached to
bottom of fire door hinge and the rod revolves which lifts another rod connected to
the hanging door beneath the grate bars from a slot, thus giving time for the cold air
to become sufficiently heated and thereby effectually consuming the Smoke.
Fig. 1 on the accompanying drawing is a longitudinal section of a Furnace Boiler
shewing my apparatus fixed. Figs. 2 and 3 are sections through the furnaces taken
at A. and B. Fig. 4 is the front olevation shewing the crank and wheel connecting
air door and cylinder. is a bridge immediately beyond the grate bars built hollow
with a door I below the grate bars for the admission of air into hollow chamber D.
This bridge has a row of perforations Ę formed with bricks on that side which is
remote from the fire. F is a second hollow arched bridge built upon piers up from
the boiler bottom with perforations G similar to and facing perforations E for letting
out the air which is supplied by a pipe H connecting air chamber I and K. The
quantity of air introduced into above is regulated by the opening and closing of
door L by an apparatus N hereinafter described. This apparatus for working door L
is composed of a cylinder M fixed as shewn in Fig. 4 containing water and also a
smaller cylinder N which has a valve at bottom for letting in the water and a tap at
side for allowing the water to escape. The cylinder N works on two rods fixed by a
cross bar to top of M which has two chains, one of which supports cylinder & the
other a weight (about six ounzes lighter than the smaller cylinder) to regulate the rise
and fall of N thus -When the furnace is stoked the fire door by a chain leading
from wheel at bottom of fire door hinge to rod O over crank R revolves wheel S
which in its turn by a chain leading over a wheel at top cross bar and attached to top
of inner cylinder which causes same to rise the water therein gradually escaping
through the tap which lightons cylinder N-the weight preventing its too rapid
descent and the door L thus closes gradually asidesired. The rod is P is also connected
to the wheel at bottom of fire door hinge and when the furnace door is opened it
draws rod P out through the slot.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is :-
The arrangement of two bridges and air pipe which communicate and the air
controlled by the draught door beneath fire bars which door is worked by an Automatic
Apparatus, as herein described and illustrated in the accompanying drawings.
Dated this Eleventh day of May 1887.