An Improved Portable Smoke Consuming or Preventing_Appliance for use in connection with Steam Generator and other Furnaces.
Year: 1892

page_text: Date of Application, 4th Nov., 1892
Complete Specification Left, 1st Aug., 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
An Improved Portable Smoke Consuming or Preventing_Appliance
for use in connection with Steam Generator and other Furnaces.
We ROBERT WALLBANK of 2 Whittaker Street, off Lever Street, Bolton, in
the County of Lancaster, Engineer, and CHARLES SHARPLES of 7 Greciam Street,
off Lever Street, Bolton, aforesaid, Money Lender, do hereby declare the nature
of this invention to be as follows:-
Our said invention relates to improved means for consuming or preventing smoke
in steam generator, and other furnaces. Hitherto, smoke consuming or preventing
apparatuses, depending mainly for their efficiency upon the introduction of heated
air through or at or near the bridge of the furnace, have been more or less elaborate
in construction and in their application to the furnace have necessitated considerable
labour and alteration in the grate, or generator or bridge. The conditions under
which smoke consuming means are required to act, are so varied, that it is not
unusual to find that a consumer which acts satisfactorily under one set of circum-
stances will be wholly inoperative under altered requirements, so that the appli-
cation of even a successful apparatus in a new situation is so much of the nature of
an experiment that steam users are often unwilling to subject their boilers to the
necessary changes. Such being the case the object of our invention is to produce a
smoke consuming or preventing appliance which is portable and can be put to work
by simply placing it upon the bars of the ordinary furnace grate, the appliance
requiring absolutely no alteration whatever, either in the grate or bridge and no
cutting or boring of the boiler shell. The appliance constituting our invention
consists of a box or chamber which may be made of any suitable material such as
This chamber.
cast or wrought metal or fire-clay or other refractory material.
corresponds to the width of the grate and is made open at the foot. An aperture
is also formed in the top and the size of this aperture is preferably made adjustable
by a sliding plate or cover or other means so as to regulate the quantity of air to
be passed through the chamber. When put to use, the chamber is simply placed
with its open bottom on the furnace bars and immediately in front of the bridge.
The depth of the box is such as to bring it about level with the top of the bridge,
When the furnace
and its length is in due proportion to the length of the furnace.
is in operation this portable chamber is highly heated so that the air entering the
chamber through the bars is also heated and issuing through the adjusted aperture
at the top meets the smoke and heated products of combustion from the furnace,
causing them to burst into flame. The chamber might have a dividing partition or
dividing partitions so as to split the currents of air and the partition or partitions
might be corrugated or zig-zaged or otherwise arranged so as to baffle the air or
expose it to as much heating surface as possible in passing through. The shape
and construction of the chamber or box might be greatly varied and instead of an.
adjustable aperture at the top we might have a series of holes or perforations.
Such a chamber or box as we have described could be applied in a very short time
and as quickly removed. Its cost is very slight as compared with other appliances
and as already said its use entails no change whatever in the boiler or its fittings.
Dated this 3rd day of November 1892
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.

page_text: COMPLETE SPECIFICATION.
An Improved Portable Smoke Consuming or Preventing_Appliance
for use in connection with Steam Generator and other Furnaces.
We ROBERT WALLBANK of 2 Whittaker Street, off Lever Street, Bolton, in
the County of Lancaster, Engineer, and CHARLES SHARPLES of 7 Grecian Street,
off Lever Street, Bolton, aforesaid, Money Lender, 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 and
accompanying drawings :-
:-
Our said invention relates to improved means for consuming or preventing
smoke in steam generator and other furnaces. Hitherto smoke consuming or
preventing apparatuses, depending mainly for their efficiency upon the introduction
of heated air through or at or near the bridge of the furnace, have been more or
less elaborate in construction and in their application to the furnace have neces-
sitated considerable labour and alteration in the grate or generator or bridge.
The conditions under which smoke consuming means are required to act, are so
varied, that it is not unusual to find that a consumer which acts satisfactorily under
one set of circumstances will be wholly inoperative under altered requirements, so
that the application of even a successful apparatus in a new situation is so much
of the nature of an experiment that steam users are often unwilling to subject their
boilers to the necessary changes. Such being the case the object of our invention
is to produce a smoke consuming or preventing appliance which is portable and can
be put to work by simply placing it upon the bars of the ordinary furnace grate,
the appliance requiring absolutely no alteration whatever, either in the grate or
bridge and no cutting or boring of the boiler shell.
The annexed sheet of drawings clearly illustrates our invention.
Fig. 1 is a vertical section of the front end of a steam boiler, showing the furnace
grate and our improved appliance in situ.
Fig. 2 is a horizontal section of Fig. 1 showing the grate and our improved
appliance in plan.
Fig. 3 is a cross section of Fig. 1 behind the bridge and showing the bridge and
the appliance in elevation.
Fig. 4 is a cross section of the appliance to an enlarged scale.
Fig. 5 is a view of the back of the appliance.
The appliance constituting our invention consists of a box or chamber a which
may be made of any suitable material such as cast or wrought metal or fire-clay or
other heat resisting or refractory material or metal.
This chamber a corresponds to the width of the grate as clearly shown in Figs. 2
and 3 and is made open at the foot at a'. The box is closed in front and has
preferably a sloping top as as clearly shown in the drawings.
The extreme edge of the sloping top a projects beyond the back so as to cover
the opening a² at the back and so prevent fuel from getting into the box. The
aperture or slit a² is formed at the back and near the top of the box a and the size
of this back aperture is preferably made adjustable by means of a movable plate or
cover b or other means so as to regulate the quantity of air to be passed through
the chamber. When put to use, the chamber a is simply placed with its open
bottom on the furnace bars c and immediately in front of the bridge d which is
preferably cut down to about the height shown in the drawings.
The depth of the box a is such as to bring it within a reasonable distance
from the top of the flue and its width from front to back is in due proportion
to the length of the furnace. When the furnace is in operation this portable
chamber a is highly heated so that the air entering the chamber at the open
bottom a through the bars, as shown by the arrows, is also heated and issuing
through the adjusted aperture a' at the back, meets the smoke and heated products

page_text: of combustion from the furnace, causing them to burst into flame and become
consumed. The chamber a might have a dividing partition or dividing partitions
so as to split the currents of air, and the partition or partitions might be corrugated
or zig-zagged or otherwise arranged so as to baffle the air or expose it to as much
heating surface as possible in passing through the box. The shape and construction
of the chamber or box a might be greatly varied and instead of an adjustable
aperture at the back we might have a series of holes or perforations. In some cases
the bridge & might be entirely dispensed with. Such a chamber or box as we have
described could be applied in a very short time and as quickly removed. Its cost
is very slight as compared with other appliances and as already said its use entails
no change whatever in the boiler or its fittings and no cutting or drilling of the
shell or flues. It should be made of such a size and shape that it can be easily
slipped through the furnace doorway and then turned across the grate.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is,
1. The improved portable smoke consuming or preventing appliance for use in
connection with steam generators and other furnaces, and capable of being intro-
duced and withdrawn to and from the furnace without entailing any alteration of
the grate or cutting or boring of the builer shell or flues substantially as herein-
before described and shown.
2. As a means for consuming or preventing smoke, the portable hollow box or
appliance a open at the foot and having a discharge aperture or discharge apertures
at the back, and utilised and applied in the manner described in the foregoing
Specification and as illustrated in the accompanying drawings.
Dated this 28th don of I.1 1002
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.