Year: 1887

page_text: Date of Application, 28th May, 1887
Complete Left, 22nd Sept., 1887
Complete Accepted, 25th Oct., 1887
I, THOMAS TAYLOR of Eagley near Bolton in the County of Lancaster, Bleacher
and Dyer, do hereby declare the nature of my said invention to be as follows:-
This invention has for its object that of burning or consuming smoke from the
furnaces of steam boilers to minimise or reduce the evil arising therefrom, and
consists in providing a two flued boiler with circular or other tubes extending from
over the fire-grates to the back end of a boiler. The outer end of the tube of the
right hand flue is connected with the outer end of the left hand flue, and the left hand
flue with the right hand flue. In another arrangement I couple the two flues together
by means of a tube or pipe near the firing end.
This apparatus operates as follows:-Before the fireman commences to supply, say,
the right hand fire with fuel he closes the damper attached to the end of its smoke
tube or flue, and opens the damper belonging to the left hand flue. Immediately
smoke is formed it passes along the boiler flue as usual, and back through the tube
over the left hand flue and into the left hand flue, where it is consumed or partly so,
the remaining unconsumed portion passing along the flues on the left hand side in
the usual manner to the chimney, and vice-versa when supplying the left hand fire
with fuel.
In the case of single flued boilers 1 provide the flue immediately over the fire with
a vertical or other air pipe extending to the outside of the boiler, the outer end of
which is provided with a swivelling damper or its equivalent operated by a mercury
box or other mechanical means from the fire-door or otherwise, being connected
thereto in any convenient manner. The said air pipe is further provided with a sliding
damper or shutter to adjust or regulate the amount of air supplied. This arrangement
is equally applicable to two flued boilers.
EDMUND CHADWICK, Fel. Inst. P.A.,
92, St. George's Road, Bolton,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or Applicable to Steam Boilers for Consuming
Smoke.
I, THOMAS TAYLOR of Eagley near Bolton in the County of Lancaster, Bleacher
and Dyer, do hereby declare the nature of my said 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 has for its object that of burning or consuming smoke from the
furnaces of steam boilers to minimise or reduce the evil arising therefrom, and
consists in providing a two flued boiler with circular or other tubes extending from
over the fire-grates to the back end of the boiler. The outer end of the tube of the
right hand flue is connected with the outer end of the left hand flue, and the left hand
flue with the right hand flue. In another arrangement I couple the two flues together
by means of a tube or pipe near the firing end.
In the case of single flued boilers I provide the flue immediately over the fire with
a vertical or other air pipe extending to the outside of the boiler, the outer end of
which is provided with a swivelling damper or its equivalent operated by a mercury
box or other mechanical means from the fire-door or otherwise, being connected
thereto in any convenient manner. The said air pipe is further provided with a sliding
damper or shutter to adjust or regulate the amount of air supplied. This arrangement
is equally applicable to two flued boilers.
Fig. 1 is a sectional longitudinal elevation of a two flued boiler with my improve-
ments applied-Fig. 2 is a sectional plan of same, and Fig. 3 is an end elevation
with front plate removed.
A is the shell of the boiler; B. B the flues, which are provided with the pipes or
tubes C and D, extending from over the fire-grates to the back end of the boiler.
The pipes or tubes Cand D are rivetted to the boiler shell or secured in any convenient
way to make a water tight joint. The outer end of the pipe or tube Cover the right
hand flue is connected with the outer end of the left hand flue, and the pipe or tube D
over the left hand flue is connected with the right hand flue as shown in Fig. 2.
This apparatus operates as follows:-Before the fireman commences to supply, say,
the right hand fire with fuel he closes the damper E attached to the end or otherwise
of its smoke tube or flue G, and opens the damper H belonging to the left hand flue.
Immediately fuel is thrown on the fire and smoke is formed the latter passes along
the boiler flue B and back through the pipe or tube D over the left hand flue and into
the left hand flue over the fire, where it is consumed, or partly so, the unconsumed
portion passing along the flues on the left hand side in the usual manner to the
chimney, and vice-versa when supplying the left hand fire with fuel.
Fig. 4 is a part sectional longitudinal elevation of another modification of my
invention, and Fig. 5 is a transverse sectional elevation through line M. N. In this
modification I dispense with the pipes or tubes C and D and couple the fines B together

page_text: near the firing end by means of the pipe or tube K. The manner of operation is similar
to that described above, which causes the smoke from the fire being charged with fuel
to be drawn through the pipe or tube K into and over the fire in the other flue, the
damper of which is open, and so on, first operating one damper and then the other
according to the fire being charged with fuel.
Fig. 6 is a part sectional longitudinal elevation of a single flued boiler with my
improvement applied, and Fig. 7 is a transverse sectional elevation through line O. P.
in Fig. 6.
The vertical or other air pipe L passes through the shell A and flue B to the bridge R
to supply atmospheric air into the combustion chamber S between the bridges R
and T to aid combustion and minimise smoke to the least possible degree. The air
pipe L is secured to the block U on the boiler shell A on which is mounted the pipe V
provided with the swivelling damper W or its equivalent, which can be operated by
well known mechanical means, such as, a mercury box attached to the fire door, or a
clock, or any other device that will cause or allow the damper W to be opened when
the fire-door is opened and allow the said damper to close gradually after the fire-door
is shut. The swivelling damper W is mounted on the centre X on which is fixed the
lever Y, the latter being coupled to the mechanical means before described by the
rod Z or its equivalent. The upper end of the pipe V is provided with the sliding
damper or shutter to adjust or regulate the amount of air to be supplied according
to the requirements of the fire when being heavily or lightly fired.
This arrangement is equally applicable to two flued boilers as shown in Fig. 8.
The underside of the bridge T is provided with the swing door d to allow of the
combustion chamber S being cleared of ashes or other refuse from the furnace mouth;
the door d being operated by the chain f.
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 :-
1. In a steam boiler the method of conveying smoke from one fire or flue to the
other by means of the pipes or tubes C and D or their equivalents, applied and
operating substantially as and for the purpose herein set forth and as shown on the
drawings in Figs. 1, 2, and 3.
2. In a steam boiler the method of conveying smoke from one fire or flue to the
other by means of the pipe or tube K, substantially as and for the purpose herein
set forth and as shown on the drawings in Figs. 4 and 5.
3. In a steam boiler the use and application of the vertical or other air pipe L, the
pipe V, swivelling damper W, and the sliding damper or shutter t, for the purpose of
supplying regulated quantities of air to the combustion chamber S to minimise the
formation of smoke to the least possible degree, substantially as described and shown
on the drawings in Figs. 6, 7, and 8.