Improved Means applicable for Use in: Mixing Liquids, with Gases town Tind the. Manufacture of Vapour hami to
Year: 1893

page_text: Date of Application, 2nd Nov, 1893
ZOITA OFI
Complete Specification Left, 2nd Aug., 1894-Accepted, 2nd Feb., 1895
PROVISIONAL SPECIFICATION.
Improved Means applicable for Use in: Mixing Liquids, with Gases
town Tind the. Manufacture of Vapour
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We,WILLIAMI-DENT, PRIESTMAN, and SAMUEL PRIESTMAN; Directors ofni
Priestman Brothers, Limited, of Holderness Foundry, in the Town and County of
Kingston-upon-Hull, Engineers, do hereby declare the nature of this invention to
be as follows
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This, invention,, relates to spray-apparatus applicable for use in mixing hydro-v
carbon oil or other liquid with atmospheric, air or other gas in the manufacture of
vapour; our object being to enable the apparatus to be worked at a comparativelyn
low pressure, without effecting a less minute subdivision of the liquidati odt al
uftrit
In the Specification to Letters Patent granted to us 9th April, 1887, No. 5255,1
are described and illustrated, mixing. devices comprising two concentric tubes tow
which the fluids to be mixed are respectively supplied under pressure, the extremity...
of the outer tube being; so, formed in relation to that of the inner tube that the two
fluids are caused to meet at right angles to one another or at an obtuse angle. T
ほ
In mixing, apparatus constructed according to our improved: method, the passage
through which the liquid is supplied is of somewhat largeridiameter than usual;
but, is for the most part.occupied by a needle or plug the diameter of which is only
slightly less than that of the passage enclosing the same. Thus, the effective arenih
for, the supply of the liquid is restricted to a minute annular space intervening t
between the surface of the needle or plug and the inner wall of the passage enclosing.
the same. flow uni od bus & guly to offer adt to
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The needle or plug may be solid or may be made hollow and provided with
lateral openings, its outer, extremity, being closed.. In the latter case, the liquid t
escapes along the length of the tubular plug to the annular passage surrounding
the same, and the resistance due to fluid-friction-is diminished
col
According to an alternative method of construction; the diameter of the needle
or plugi corresponds, with that of the pipe or passage it occupies; libutaither
sides of the former are filed to form three, four or other number.toff-flats, i
the spaces, intervening between, these flats and the inner wallt oft then passage
forming small ducts for the conveyance of the liquid: Under such circumstances, i
although the total effective, area for the escape, of the liquid maybe nequal
to that of the annular passage previously. referred. to, the maximum width of
the duct is somewhat greater, a consideration of some importance unless the liquid
bet,perfectly, strained for, the interception of solid matters. If preferred, the Hats
may stop, short of the extremity, of the needle or plug, the latter terminating in aw
solid cylinder, of,slightly less, diameter than the surrounding passage.Under sucht
circumstances,, the, liquid, is conducted nearly to the extremity of the tube under
comparatively little, frictional resistance, and is then forced through a comparativelyi!
short length of the narrow annular passage in ft of top of combimit is to
amDated the 2nd day of November 1893 out to the maize odt
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page_text: Improved Mean's applicable for Use in Mixing Liquids with Gases
in the Manufacture of Vapour.
-
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, Directors of
Priestman Brothers, Limited, of Holderness Foundry, in the Town and County of
Kingston-upon-Hull, 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 spray-apparatus applicable for use in mixing hydro-
carbon oil or other liquid with atmospheric air or other gas in the manufacture of
vapour our object being to enable the apparatus to furnish an increased yield or
to be worked at a comparatively low pressure without effecting a less minute
subdivision of the liquid.
In the Specification to Letters Patent granted to us 9th April, 1887, No. 5255,
are described and illustrated mixing devices comprising two concentric tubes to
which the fluids to be mixed are respectively supplied under pressure, the extremity
of the outer tube being so formed in relation to that of the inner tube that the two
fluids are caused to meet at right angles to one another or at an obtuse angle.
The accompanying drawings represent mixing apparatus constructed according to
our improved method; Fig. 1 showing in longitudinal section one mode of carrying
out our invention, whilst Figs. 2 and 3 illustrate modifications.
space
The passage A through which the liquid is supplied is of somewhat larger
diameter than usual, but is for the most part occupied by a fixed needle or plug B
the diameter of which is only slightly less than that of the passage A. Thus, the
effective area for the supply of the liquid is restricted to the minute annular
intervening between the surface of the needie or plug B and the inner wall of the
passage A..
C is the passage for air or other gas. The needle or plug B is solid;
the liquid flowing to the minute annular space through ducts a.
According to the construction illustrated by Fig. 2, the plug B¹ is hollow and is
formed with lateral openings b, its outer extremity being closed at b¹. In this
case, the liquid escapes through the lateral openings along the length of the
tubular plug B₁ to the annular passage A, and the resistance due to friction is
diminished.
b
In the modification illustrated by Fig. 3, the extremity 63 of the hollow plug B¹
is open but the passage therethrough is intercepted at 6*, and a lateral passage b
communicates with the air or gas channel C. The air or other gas is thus caused
to overtake as well as to meet the stream of liquid as it issues from the annual
passage A.
According to another variation, the diameter of the needle or plug corresponds
with that of the pipe or passage it occupies, but the sides of the former are filed to
form three, four or other number of flats, the spaces intervening between these flats
and the inner wall of the passage forming small ducts for the conveyance of the
liquid. Under such circumstances, although the total effective area for the escape
of the liquid may be equal to that of the annular passage previously referred to,
the maximum width of the duct is somewhat greater, a consideration of some
importance unless the liquid be perfectly strained for the interception of solid
matters. If preferred, the flats may stop short of the extremity of the needle or
plug, the latter terminating in a solid cylinder of slightly less diameter than the
surrounding passage. Under such circumstances, the liquid is conducted nearly to
the extremity of the tube under comparatively little frictional resistance and is then
forced through a comparatively short length of the narrow annular passage.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we claim :—
1. The improved means for use in mixing liquids with gases in the manufacture
of vapour, substantially as herein described, and adapted for furnishing an increased
yield or for working at comparatively low pressure.
2. The improved apparatus for mixing liquids with gases in the manufacture of
vapour, constructed substantially as herein described, and in which the liquid issues
from a circular pipe for the most part occupied by a plug, whilst the length of the
passage so restricted is reduced to a minimum.