Year: 1894

page_text: Date of Application, 16th May, 1894
Complete Specification Left, 16th Feb., 1895-Accepted, 16th Mar., 1895
.
1, GEORGE WARREN, of Exeter Road, Exmouth, in the County of Devon,
Brick and Tile Manufacturer, do hereby declare the nature of this invention to be
as follows:
My invention relates to improved apparatus for spraying or injecting liquid fuel
into steam boiler and other furnaces.
My improved apparatus, which is advantageously constructed of ordinary steam
piping and tee-pieces and bends, comprises two concentric tubes which form a
spraying nozzle, the space between the two tubes serving for the passage of the
liquid fuel and the inner tube for the passage of steam which escapes from the
nozzle and takes up and distributes the liquid fuel. In order to accelerate
the flow of the liquid fuel I connect the space between the pipes with a steam pipe,
the steam mingling with the fuel and carrying it forward in the said space.
In practice the ends of the tubes are advantageously "upset" and burred in
order to atomize the fuel as it issues from the nozzle.
Dated this 14th daw of Mo 1904
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
I, GEORGE WARREN, of Exeter Road, Exmouth, in the County of Devon,
Brick and Tile Manufacturer, 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 :-
My invention relates to improved apparatus for spraying or injecting liquid fuel
into steam boiler and other furnaces.
My improved apparatus, which is advantageously constructed of ordinary steam
piping and tee-pieces and bends, comprises two concentric tubes which form a
spraying nozzle, the inner tube serving for the passage of the liquid fuel and the
space between the two tubes for the passage of steam which escapes from the
uözzle and takes up and distributes the liquid fuel. In order to accelerate
the flow of the liquid fuel I provide for introducing a jet of steam into the fuel
pipe, the steam carrying the fuel forward.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :—
Figure 1 is an elevation of my improved apparatus; and,
Figure 2 is a sectional elevation.
a, b are the two concentric tubes the former of which is screwed into one end of
a tee-piece c whilst the other is screwed into a nipple d connecting the said tee
piece with another tee piece d', the other end of the said tee piece d' being screwed

page_text: onto a nipple e which at one end is formed with a contracted passage f whilst the
other end carries an elbow g.
h is the steam pipe having two branches i, j provided with stop cocks ¹, j¹
respectively, the branch being connected with the elbow g and the branch j with
the tee piece_c. kis the liquid fuel supply pipe provided with a cock k¹ and
connected with the tee piece d¹.
In using this apparatus steam is admitted through the branches i, j whereby a
jet of steam from the contracted passage f is blown along the tube b and whereby
steam also passes between the two concentric tubes a, b to the nozzle, whilst at the
same time liquid fuel is introduced through the pipe and is carried forward by
the steam escaping from the contracted passage and sprayed at the mouth of the
nozzle by the steam passing between the concentric tubes.
In practice the ends of the tubes are advantageously upset and burred or
otherwise constructed in order to atomize the fuel as it issues from the nozzle..
It will be understood that in practice my improved spraying apparatus may be
arranged in any suitable position according to the purpose for which it is required
and also the pipes, through which the steam and fuel are introduced may be led
from any desirable point.
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 :-
1. In apparatus for spraying liquid fuel the arrangement of two concentric tubes
through which steam and liquid fuel are conducted towards a nozzle, in combination
with means whereby a jet of steam may be introduced into the passage through
which the fuel flows towards the nozzle, substantially as described.
2. The manufacture and use of the improved apparatus for spraying liquid fuel
herein before described and illustrated in the accompanying drawing.
Dated this 16th day of February 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.