Improvements in Means or Apparatus for Generating Steam and Economizing Fuel.
Year: 1890

page_text: Date of Application, 17th Apr., 1890
Complete Specification Left, 17th Jan., 1891-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Means or Apparatus for Generating Steam and
Economizing Fuel.
I, WILLIAM BRADSHAW LEACHMAN, of Excel Works, Great Wilson Street,
Leeds, in the County of York, Engineer, do hereby declare the nature of this
invention to be as follows:-
The object of my invention is to construct steam generating or producing
apparatus, utilizing in so doing the whole of the heat from the boiler furnace, and
depositing the residue from the products of combustion, from which can be after-
wards extracted, tar and other valuable materials.
For the above purpose I employ two boilers or steam generating chambers, the
first of which may be an ordinary boiler, and the second is in connection with the
flue through which the waste heat and products of combustion pass from the first
boiler furnace. In commencing to raise steam a draught is caused by connecting
the boiler flue with an ordinary chimney. In the entrance from the flue to the
second chamber is provided a nozzle, such nozzle being connected by suitable pipe
to the first boiler. On the steam having arrived at sufficient pressure in the first
boiler, it is turned on and injected into the second boiler or chamber, the damper
to the chimney being now closed, the steam passing under pressure into the second
boiler or chamber inducing injector like, the waste heat and products of combustion
from the first boiler furnace or furnaces to pass with it into the second chamber or
boiler, such second chamber or boiler being filled to a suitable extent with water.
By these means there is no heat lost, but, steam is quickly generated in the second
chamber owing to the great heat passed into it, and can be brought up to any
required pressure. The residue is deposited in the water that remains in the vessel
or second boiler, this can be withdrawn when desirable and the chemical properties
extracted therefrom and utilized in any ordinary way.
Dated this 17th day of April 1890.
J. W. HARDING,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Means or Apparatus for Generating Steam and
Economizing Fuel.
J, WILLIAM BRADSHAW LEACHMAN, of Excel Works, Great Wilson Street,
Leeds, in the County of York, 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:-
The object of my invention is to construct steam generating apparatus, utilizing
in so doing the whole of the heat from the boiler furnace, and depositing the residue
from the products of combustion, from which can be afterwards extracted tar and
other valuable materials.
The accompanying drawing shews a longitudinal section of apparatus constructed
in accordance with my invention.
For the above purpose I employ two boilers or steam generating chambers A
and B; the former of which may be an ordinary steam boiler, and the latter is
connected therewith by the flue C through which the waste heat and products of
combustion pass from the boiler furnace A¹.
In commencing to raise steam a draught is caused by opening the damper D
in the ordinary chimney E which is in connection with the boiler flue C.

page_text: At the entrance into the second chamber or boiler B is provided a nozzle F,
such nozzle being connected to the boiler A by tube or pipe G, at H. On the
steam having arrived at sufficient pressure in the boiler A, it is turned on and
injected through the nozzle F into the second chamber or boiler B, the damper D
to the chimney E being now closed, the steam passing under pressure into the
second chamber or boiler B, inducing the waste heat and products of combustion
from the first boiler furnace A' to pass with it into the second chamber or
boiler B, such second chamber or boiler B being filled to a suitable extent with
water.
By these means there is no heat lost, but steam is quickly generated in the
second chamber or boiler B owing to the great heat passed into it, and can be
brought up to any required pressure.
In order to pass the injected steam and products of combustion direct into the
water contained in the second boiler B, I connect a hinged pipe J to the inlet K,
such pipe J being provided with a float L, such float being for the purpose of raising
the outer or free end of the pipe J to suit the quantity of water contained in the
second boiler B, so that the steam and products of combustion are passed therein
at M whatever may be the quantity of water contained in such second chamber or
boiler B.
I employ the check valve N for preventing back pressure or escape of steam
from the second chamber or boiler B when the operation of the steam injector has
been caused to cease.
It will be understood that the boiler A may be used for various purposes other
than for supplying steam for inducing the products of combustion to enter the second
chamber or boiler B, and also the generated steam in the boiler B may be used for
any required purpose.
The residue from the products of combustion are deposited in the water in the
second chamber or boiler B, and such residue can be withdrawn when desirable,
and the chemical properties extracted therefrom and utilized in any ordinary
way.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The arrangement, construction and combination of the various parts forming the
means or apparatus, whereby the products of combustion from the furnace A' of
the boiler A are caused or induced to pass into the boiler B for the purpose of
generating steam and economizing fuel, substantially as herein set forth.
Dated this 17th day of January 1891.
J. W. HARDING,
Agent for the Applicant.