Improvements in or connected with Locomotive Engines, Marine Engines, and Engines of the Robey Type.
Year: 1894

page_text: Date of Application, 9th June, 1894
Complete Specification Left, 9th Mar., 1895-Accepted, 13th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in or connected with Locomotive Engines, Marine
Engines, and Engines of the Robey Type.
We, JAMES ASHWORTH and JAMES ASHWORTH Junior both of Mouzell
Mines, Dalton-in-Furness in the County of Lancaster, Mining Engineers do
hereby declare the nature of this invention to be as follows:-
This invention relates to locomotive and marine engines, and engines of the
Robey type and has for its object to economize fuel by utilizing the heat of the
exbaust steam and of the escaping furnace gases which are at present wasted.
The said heat is utilized by causing it to heat water which after being heated
may be introduced into the boiler in any convenient way, for example, by means
of a pump, or ram, fixed to any convenient part of the engine or boiler. The
device by which the heating of the water is effected consists of a chimney or
equivalent passage through which the exhaust steam and escaping gases pass, the
said chimney or the like being provided with a space or spaces for the water
to be heated. The said device may for example take the form of a number
of tubes in the chimney in or around which tubes the water is contained or of a
casing around the chimney in which casing the water is contained.
The exhaust steam and escaping gases passing in contact with the surfaces of
the tubes, or water container, or containers, impart their otherwise waste heat to
the water and cause it to attain a high temperature and this heated water being
supplied to the boiler a considerable economy in fuel results.
Dated this 9th day of June 1894.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, Agents.
Improvements in or connected with Locomotive Engines, Marine
Engines, and Engines of the Robey Type.
We JAMES ASHWORTH and JAMES ASHWORTH, Junior, both of Mouzell
Mines Dalton in Furness in the County of Lancaster Mining Engineers 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 :-
This invention relates to locomotive, and marine engines of the Robey type,
and has for its object to economize fuel by utilizing the heat of the exhaust
steam and of the escaping furnace gases which are at present wasted. The said
heat is utilized by causing it to heat water which after being heated may be
introduced into the boiler in any convenient way, for example, by means of a
pump, or ram, fixed to any convenient part of the engine, or boiler. The device
by which the heating of the water is effected consists of a chimney or equivalent
passage through which the exhaust steam and escaping gases pass, the said
chimney or the like being provided with a space or spaces for the water to be
PQ/1

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heated. The said device may for example take the form of a number of tubes, in
the chimney, in or around which tubes the water is contained or of a casing
around the chimney in which casing the water is contained.
The exhaust steam and escaping gases passing in contact with the surfaces of
the tubes, or water container, or containers, impart their otherwise waste heat to
the water and cause it to attain a high temperature and this heated water being
supplied to the boiler a considerable economy in fuel results.
Figure 1 is a vertical section and Figure 2 a transverse section shewing tubes a
arranged in the chimney b, the said tubes being inserted in tube plates o fixed
across the chimney so as to surround the tubes b by a space through which water
is passed by the inlet and outlet dd. The products of combustion and exhaust
steam in passing through the chimney and up through the tubes b effect the
heating of the water outside the tubes."
space
ai
Figures 3 and 4 are like views of a chimney which has a water
surrounding its interior the space being formed by the internal casing e. d and
are the water inlet and outlet as in the preceding arrangement.
We have shewn by dotted lines in Figures 3 and 4 tubes f arranged transversely
in the chimney the said tubes communicating at their opposite ends with the water
space a whereby increased surface is provided for the products of combustion
from the furnace to act upon in their passage through the chimney.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination with locomotive engines, marine engines, and engines of the
Robey type, of a space or spaces for water in or surrounding the chimney or
passage or passages through which the escaping products of combustion and
exhaust steam pass so that the otherwise waste heat is utilized in heating the water
as hereinbefore described.
2. In locomotive engines, marine engines or engines of the Robey type the
combination with the chimney of tubes for the passage of the escaping products
of combustion and exhaust steam the said tubes being surrounded by a water
casing and provided with means for passing water therethrough substantially as
herein before described and shewn in Figures 1 and 2 of the accompanying
drawings.
3. In locomotive engines, marine engines, or engines of the Robey type the
combination with the chimney of a water casing surrounding its interior with
means for passing water therethrough substantially as hereinbefore described and
shewn in Figures 3 and 4 of the accompanying drawings.
Dated this 9th day of March 1895.
JOHNSONS & WILLCOX,
Agents.