Improvements in and relating to Steam Boiler Tubes.
Year: 1892

page_text: "Date of Application, 6th May, 1892
Complete Specification Left, 25th Jan., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by PIERRE ANDRÉ CHÂTENET, of 13, Rue
St. Georges, Paris, in the Republic of France, Mechanician.]
Improvements in and relating to Steam Boiler Tubes.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
My invention relates to a steam boiler tube which has for its object to break up
water into particles or fine drops by mechanical means for enabling it to be
vaporized very rapidly.
The improved tube is provided with a cock of special construction as hereinafter
set forth. It may be placed either in a vertical, horizontal or inclined position,
and is closed at one of its extremities. Into this tube I introduce a second tube
made of copper, brass or the like, the exterior diameter of which is very slightly
less than the interior diameter of the first tube so as to leave between these two
tubes a very narrow cylindrical space for the water broken up into particles or fine
drops in its passage through the said cock, and forced in by the feed pump. These
particles or fine drops pass between the two tubes heated by the flames and
evaporate almost instantly, the steam produced passing through the open extremity
of the second tube in order to escape through the steam outlet orifice.
It will be understood that for the proper operation of the apparatus it is
necessary to regulate very accurately the introduction of the water and to vary it
during the motion of the engine, so that a controlling device will be necessary.
This controlling device is supplied by the special construction of the cock herein-
before referred to, which has a water admission orifice, a water discharge orifice,
and a supplementary orifice designed for the control.
The plug of the said cock comprises an outer part and an inner part held in the
outer by means of a screw thread.
The water introduced through the admission orifice passes into a central cavity
formed in the inner part of the plug and enters an annular space between the two
parts through holes provided in the wall of the inner part.
On the side where the water is introduced into the aforesaid tube the two parts
of the plug are tapered so as to leave between them an annular space the width of
which may be readily changed.
.
By turning the inner part of the plug with the help of a screw driver inserted
into a slit in the same I can accurately adjust the distance which the inner part
extends into the outer part and therefore the width of the annular space, so that
the water passing through the latter may be broken up more or less.
In order to enable the screw driver to be introduced into the said slit I give the
plug of the cock a quarter of a turn to bring the slit opposite the supplementary
orifice. By a quarter of a turn in the other direction the aforesaid annular space
is brought opposite the supplementary orifice in which case the water which has
been broken up into particles or fine drops will escape through the supplementary
orifice.
For augmenting or diminishing the quantity of water to be injected into the tube
I give half a turn to the plug, screw the inner part of the latter further inwards
or outwards in the outer part so as to adjust the annular space and I may regulate
the feed at will without stopping the motion of the engine.
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Steam Boiler Tubes.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co. Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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 a steam boiler tube which has for its object to break up
water into particles or fine drops by mechanical means for enabling it to be
vaporized very rapidly.
The improved tube is provided with a cock of special construction as hereinafter
described.
In the accompanying drawing :
Figure 1 represents, by way of example, a section of a tube which is in this case
arranged vertically but which may if desired, be arranged in any other position; as
for instance, horizontally or at an incline, and
Figure 2 is a section of the improved cock.
The tube T is closed at one of its extremities, and through the other extremity
I introduce a second tube t made of copper, brass or other suitable material, the
exterior diameter of which is very slightly less than the interior diameter of the
tube T, so as to leave between these two tubes a very narrow annular space for
the water broken up into particles or fine drops in its passage through the cock R,
and forced in by the feed pump.
These particles or fine drops pass between the two tubes and T which are
heated by the flames and evaporate almost instantly, the steam produced passing
through the open extremity of the tube t in order to escape through the steam
'outlet orifice B.
It will be understood that for the proper operation of the apparatus it is necessary
to regulate very accurately the introduction of the water and to vary it during the
motion, of the engine, so that a controlling device will be necessary. This
controlling device is supplied by the special construction of the cock shown in
Figure 2. In this cock, A is the water admission orifice, B' is the water discharge
orifice, and C is a supplementary controlling orifice.
The plug of the said cock comprises an outer part d and an inner part / held in
the outer part by means of a screw thread o p, o pl which enabled the part e to be
screwed more or less into the part d.
The water introduced through the admission orifice A passes into a central
cavity & formed in the screw threaded parte of the plug and enters an annular
space between the two parts, through holes f and provided in the wall of the
inner part.
On the side where the water enters the aforesaid tube the two, parts é and d of
the plug are tapered so as to leave between them an annular space m n; m²; n¹ the
width of which may be readily adjusted.
'By turning the inner part of the plug by means of a screw driver inserted into a
'slit in the same I can accurately adjust the distance which the inner part e extends
into the outer part d and therefore the width of the annular space m n, m³, n' so
that the water passing through the latter may be broken up more or less.
In order to enable the screw driver to be introduced into the said slit I give the
plug of the cock à quarter of a turn to bring the slit opposite the supplementary
orifice C. By a quarter of a turn in the other direction the aforesaid annular
space m n m³ n' is brought opposite the supplementary orifice in which case the
water which has been broken up into particles or fine drops will escape through
the supplementary orifice, C.
For augmenting or diminishing the quantity of water to be injected into the

page_text: tube I give the plug half a turn, screw the inner part e of the latter further
inwards or outwards in the outer part d so as to adjust the annular space and I
may regulate the feed at will without stopping the motion of the engine.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
The combination of the tube and cock above described for enabling the water to
be broken up and to be rapidly vaporized, substantially as and for the purpose
above specified.
Dated this 25th day of January 1893
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.