IMPROVEMENTS IN STEAM-BOILERS
Year: 1886

page_text: Date of Application, 7th July, 1886.
Complete Left, 7th Apr., 1887.
Complete Accepted, 10th May, 1887.
We ELIAS WALKER of 8 Spring Hill, Waterhead, Oldham in the county of
Lancaster, Engineer and JAMES RADCLIFFE of 20 Trafalgar Street Oldhain aforesaid,
Boiler-Maker do hereby declare the nature of our invention for IMPROVEMENTS IN
STEAM-BOILERS to be as follows:-
Our invention relates to such steam-boilers as are each provided with an internal
flue or internal flues and consists in arrangements by which such steam-boilers are
rendered more efficient than they have hitherto been.
In accomplishing the object of our invention we place within each of the flues of
the steam-boilers above referred to a chamber the interior of which chamber com-
municates with the interior of the steam-boiler by means of tubes or pipes, which
tubes or pipes also serve to support the chamber before-mentioned within the fluo
within which such chamber is placed. We provide the chamber above-mentioned
with tubes or flues which tubes or flues we so arrange in the chamber aforesaid that
a space is left in the interior of the said chamber to allow a person to enter such
chamber to cleanse the exteriors of the tubes or flues and the interior of the said
chamber or for any other purpose, and to allow a person to enter the said chamber
we form the upper tube or pipe or tubes or pipes connecting the interior of
such chamber with the interior of the steam-boiler aforesaid, sufficiently large
to allow a person to pass through such tube or pipe or either of the said tubes
or pipes into the interior of the chamber before-mentioned. The dirt and sediment
removed from the exteriors of the tubes or flues above-mentioned and the interior
of the chamber above-referred to may be passed out of such chamber through
the tube or pipe or tubes or pipes which connects or connect the interior of such
chamber with the lower part of the interior of the steam-boiler in connection with
which the said chamber is employed.
One portion of the products of combustion passes around the outside of the
chamber above-mentioned and another portion of the said products of combustion
passes through the tubes or flues with which the chamber above-mentioned is
provided.

page_text: By the arrangements above described we obtain additional heating surface and
ensure a better circulation of the water contained in the steam-boiler particularly in
the part situate below the flue or flues than ordinarily exists in steam-boilers having
an internal flue or internal flues.
If so desired a guard or shield may be placed in the interior of the steam-boiler
above the upper opening or openings of the upper tube or pipe or tubes or pipes
connecting the interior of the chamber above-mentioned with the interior of the
steam-boiler to direct in a horizontal or nearly horizontal direction, the heated water
issuing from the chamber aforesaid and prevent dirt or sediment from falling into the
said chamber.
W. T. CHEETHAM,
Carlton Chambers,
18, Saint Ann's Street, Manchester,
Agent to the Applicants.
We ELIAS WALKER of 8 Spring Hill Waterhead Oldham in the County of
Lancaster Engineer and JAMES RADCLIFFE of 20 Trafalgar Street Oldham aforesaid
Boiler Maker 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:-
Our invention relates to such steam-boilers as are each provided with an internal
flue or internal flues and consists in arrangements by which such steam-boilers are
rendered more efficient than they have hitherto been.
In accomplishing the object of our invention we place within each of the flues of
the steam-boilers above referred to, a chamber the interior of which chamber com-
municates with the interior of the steam-boiler by means of tubes or pipes, which
tubes or pipes also serve to support the chamber before mentioned within the flue
within which such chamber is placed-We provide the chamber above mentioned
with tubes or flues which tubes or flues we so arrange in the chamber aforesaid that

page_text: a space is left in the interior of the said chamber to allow a person to enter such
chamber to cleanse the exteriors of the tubes or flues and the interior of the said
chamber or for any other purpose and to allow a person to enter the said chamber wo
form the upper tube or pipe or tubes or pipes connecting the interior of such chamber
with the interior of the steam-boiler aforesaid sufficiently large to allow a person to
pass through such tube or pipe or either of the said tubes or pipes into the interior of
the chamber before mentioned-The dirt and sediment removed from the exteriors
of the tubes or flues above-mentioned and the interior of the chamber above referred
to may be passed out of such chamber through the tube or pipe or tubes or pipes
which connects or connect the interior of such chamber with the lower part of the
interior of the steam-boiler in connection with which the said chamber is employed.
One portion of the products of combustion passes around the outside of the chamber
above-mentioned and another portion of the said products of combustion passes
through the tubes or flues with which the chamber above mentioned is provided.
Figs. 1 and 2 of the drawings hereunto annexed show so much of a steam-boiler as
is requisite to illustrate the method of carrying our invention into effect, Fig. 1
being a vertical section and Fig. 2, a vertical longitudinal section taken on the dotted
line A, B of Fig. 1.
In Figs. 1 and 2 a is the shell of the steam-boiler C within which are situate the
two longitudinal flues b. b-As the apparatus which we apply to each of the flues b. b*
for the purpose of carrying our invention into effect is similar in construction to that
applied to the other of the said flues we will only describe the apparatus in one of the
said flues and to corresponding parts of the apparatus in the other flue we shall affix
the same letters of reference with the addition of an asterisk (*).
We place within the flue b a chamber c-To the chamber c we secure one end of
each of tubes or pipes d. d¹ the remaining ends of which tubes or pipes d. d¹ are
secured to the flue b-By means of the pipes or tubes d. d¹ the interior of the
chamber c communicates with the interior of the boiler C-The pipes or tubes d. d¹
also serve to support the chamber c within the flue b-We provide the chamber c with
longitudinal tubes or flues e so arranged in the chamber c that a space D is left in
the interior of the said chamber e to allow a person to enter such chamber c to cleanse
the exteriors of the tubes or flues e and the interior of the chamber c or for any other
purpose In some cases we place the tubes or pipes d' vertically in a line with the
tubes or pipes d but when the tubes or pipes d' are placed in the position in which
they are shown in the drawing they are more readily secured to the flue than they
would be if placed vertically beneath the tubes or pipes d-In order to allow a person
to enter the said chamber c, we form the upper tubes or pipes d sufficiently largo to
allow a person to pass through the pipes or tubes d into the interior of the chamber c―
The dirt and sediment removed from the exteriors of the tubes or flues e and the
interior of the chamber c may be passed out of the chamber c through the tubes or
pipes d' so as to fall into the lower part of the boiler to be subsequently removed
therefrom. are the "fire-bars" and g is the "bridge"-The products of combustion
passing over the "bridge" g as usual will pass along the interior of the flue b in the
direction indicated by the arrow E-One portion of the said products of combustion
will pass between the outside of the chamber c and the interior of the flue 6 and
another portion of the said products of combustion will pass through the tubes or
flues e The heated water and steam from the interior of the chamber c will pass
through the tubes or pipes d into the water in the upper part of the interior of the
boiler C and water will pass through the tubes or pipes d' from the lower part of the
interior of the boiler to the interior of the chamber c to be heated therein-
Although we have hitherto only referred to our invention as applied to a steam-boiler
having two flues, it will be readily understood that our invention may be applied to
steam-boilers each having only one flue or to steam-boilers each having more than
two flues.
Although we have only shown four tubes or pipes d, d' as being employed a greater
or less number, of such tubes or pipes may be employed if desired.

page_text: The length and diameter of the chamber c and the number and size of the tubes or
flues e may be varied as may be thought desirable.
If so desired a guard or shield or guards or shields may be placed in the interior of
the steam-boiler above the upper opening or openings of the upper tube or pipe or
tubes or pipes connecting the interior of the chamber above mentioned with the
interior of the steam-boiler to direct in a horizontal or nearly horizontal direction
the heated water issuing from the chamber aforesaid and prevent dirt or sediment
from falling into the said chamber-A method of applying the said guard or shield
or guards or shields is illustrated by Figs. 3 and 4 Fig. 3 being a vertical longi-
tudinal section and Fig. 4 a vertical cross-section of so much of a steam-boiler having
our invention applied to it as is necessary to illustrate the application of the said
guard or shield or guards or shields. To such of the parts shown in Figs. 3 and 4 as
correspond to parts shewn in Figs. 1 and 2 we shall affix the same letters of reference
as we have affixed to the corresponding parts shown in Figs. 1 and 2-Above each of
the tubes or pipes d we place a guard or shield / supported upon pillars ; secured to
the flue b.
The guards or shields are secured upon the pillars j by nuts k so that either or
both of the said guards or shields h may be removed when required to allow a person
to enter the chamber c or for any other purpose-The guards or shields h direct in a
horizontal or nearly horizontal direction the heated water issuing from the chamber c
and the said guards or shields h also tend to prevent dirt or sediment from falling
into the chamber c.
By the arrangements above described we obtain additional heating surface and
ensure a better circulation of the water contained in the steam-boiler particularly in
the part situate below the flue or flues than ordinarily exists in steam-boilers having
an internal flue or internal fluos.
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 :-
For use for the purpose of providing additional heating surface and ensuring a
better circulation of the water contained in steam-boilers having an internal flue or
internal flues than ordinarily exists in such steam-boilers the apparatus hereinbefore
described consisting in a chamber such as c having certain of the parts connected to
and contained by it arranged to allow of easy access to the interior of the said chamber
and provided with tubes or flues such as e and connected to the flue in which it is
placed by means of tubes or pipes such as d. d' and constructed arranged and
employed substantially in the manner hereinbefore described in reference to and
indicated in and by the drawings hereunto annexed.
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11
CA1 1007
W. T. CHEETHAM,
Agent to the Applicants.