Year: 1888

page_text: Date of Application, 11th Feb., 1888
Complete Specification Left. 12th Nov., 1888
Complete Specification Accepted, 11th Feb., 1889
I, JOHN JOSEPH REVELEY HUMES, of 18, Lilford Road, Camberwell, in the
County of Surrey, Engineer, do hereby declare the nature of this invention to he as
follows:-
:-.
This invention relates to improved means for mixing liquids with gases in the
preparation of vapour.
In the Specification to Letters Patent granted to me 1st February, 1886, No. 1,464,
is described and illustrated a device for mixing liquid hydrocarbon with atmospheric
air; the same being provided with a nozzle in which the gas is directed with
considerable obliquity across the stream of liquid as it issues from the extremity of a
pipe enclosed within the gas conduit.
The object of my present invention is the production of vapour in which the
liquid is more perfectly subdivided-or, as has been termed, pulverised '--and
dispersed in the gaseous medium than is effected by any kind of mechanical mixing
apparatus with which I am acquainted.
A mixing nozzle constructed according to my present improved method may be
described as consisting of three parts; a central tube conveying the liquid under
pressure, a surrounding body perforated longitudinally and traversed diagonally by
two or more passages, and an enclosing casing; au annular passage for the gas, also
under pressure, being formed between the body and the casing. The diagonal passages
communicate at their outer extremities with the annular gas-passage, and terminate
at their inner extremities in proximity to the delivery orifice of the central tube
conveying the liquid. Between this point and the end of the inner body, a small
chamber is formed in which the liquid escaping from the tube and the gas conveyed
by the diagonal passages are subjected to an initial mixing process. Opposite the
open end of the chamber, an orifice is formed in the outer casing; and the extremity
of the latter is so shaped that the outlet from the annular gas-passage is oblique or at
right angles to the direction of the stream issuing from the initial mixing chamber,

page_text: The gas conveyed by the annular passage is by these means projected across the the
stream of previously-mixed gas and liquid issuing from the aforesaid chamber, a
second and final mixing process thereupon ensuing.
Instead of a separate tube being employed to convey the liquid to the head of the
initial mixing chamber, it will be obvious that the body hereinbefore described as
surrounding the said tube may be drilled or otherwise perforated for the purpose.
Under such circumstances, the mixing nozzle will consist of only two parts, the
inner body and the outer casing.
Dated this fith day of February 1888

page_text: Improvements in the Manufacture of Vapour and in Mixing Nozzles
therefor.
I, JOHN JOSEPH REVELEY HUMES, of 18, Lilford Road, Camberwell, in the
County of Surrey, 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:-
This invention relates to improved means for mixing liquids with gases in the
preparation of vapour.
In the specification to Letters Patent granted to me and dated 1st February, 1886,
No. 1,464, is described and illustrated a device for mixing liquid hydrocarbon with
atmospheric air; the same being provided with a nozzle in which the gas is directed
with considerable obliquity across the stream of liquid as it issues from the extremity *
of a pipe enclosed within the gas-conduit.
The object of my present invention is the production of vapour in which the
liquid is more perfectly subdivided-or, as it has been termed, pulverised-and
dispersed in the gaseous medium than is effected by any other kind of mechanical
mixing apparatus with which I am acquainted.
A mixing nozzle constructed according to my present improved method is
represented in longitudinal section in the accompanying drawing, and may be
described as consisting of three parts; a central tube a conveying the liquid under
pressure, a surrounding body b perforated longitudinally for the reception of the
tube a and traversed diagonally by two or more passages 62, and an enclosing casing c;
an annular passage d for the gas, also under pressure, being formed between the
body b and the casing c. The diagonal passages 62 62 communicate at their outer
extremities with the annular gas-passage d, and terminate at their inner extremities
in proximity to the delivery orifice a' of the central tube a. Between this point and
the end of the body b, a small chamber b¹ is formed in which the liquid escaping
from the tube a and the gas conveyed by the diagonal passages 62 are subjected to an
initial mixing process. Opposite the open end of the chamber 61, an orifice c¹ is
formed in the casing c; and the extremity of the latter is so shaped that the outlet
from the annular gas-passage d is either oblique or at right angles to the direction of
the stream issuing from the initial mixing chamber 6. The gas conveyed by the
annular passage d is by these means projected across the stream of previously-
mixed gas and liquid issuing from the aforesaid chamber 6', a second and final mixing
process thereupon ensuing. In the present illustration, the parts are represented as
mounted in the end plate e of a chamber which serves as a receptacle for the vapour.
In this plate is formed a pocket fto which the pipe g conveying the gas under pressure
is led and whence the annular passage d of the mixing nozzle is supplied.

page_text: Instead of a separate tube being employed to convey the liquid to the head of the
initial mixing chamber b, it will be obvious that the body b may be perforated for
the purpose. Under such circumstances, the mixing nozzle need only consist of two
parts the inner body and the outer casing.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I claim :-
1. The improved method of mixing liquid with gas in the preparation of vapour'
substantially as herein described and whereby the particles of liquid are very minutely
subdivided and dispersed in the gaseous medium.
2. The improved construction of vaporiser arranged and operating substantially as
herein described and comprising a mixing nozzle in which the gas supply is subdivided,
a portion being led through oblique passages to meet the liquid as it issues from the
pipe conveying the same, and the remainder being led through an annular passage to
a point beyond, where it meets at right angles or nearly so the combined stream of
gas and liquid previously mixed.
Dated this 5th day of November 1888
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C.,
Agent for the Applicant.