Improvements in Instantaneous Steam Generators.
Year: 1898

page_text: Date of Application, 23rd Feb., 1898
Complete Specification Left, 23rd Dec., 1898-Accepted, 11th Feb., 1899
Date of Application, 23rd Feb., 1898
Complete Specification Left, 23rd Dec., 1898-Accepted, 11th Feb., 1899
PROVISIONAL SPECIFICATION.
Improvements in Instantaneous Steam Generators.
We, WILLIAM SIMPSON, of 8, Minshull Street, Manchester, in the County of
Lancaster, Cotton Manufacturer, WALTER LIGHT BODMAN, of Village View,
Burnage Lane, Didsbury, in the County of Lancaster, Carriage Builder, and
DANIEL HARRISON SIMPSON, of One Oak, Cheadle Hulme, in the County of
Chester, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in that class of steam genera-
tors in which water is injected in small quantities and at a rate proportionate
to immediate requirements, and the object of this invention is chiefly to obtain
a higher efficiency in that class of generator than has hitherto been obtained.
In accordance with our invention the improved boiler is formed of several
parallel rows of tubes of the form hereinafter described suitably supported and
having their ends connected together by tubular elbows in such a manner as
to form a coil and obtain a continuous passage of constricted area there-through.
The tubes, between their ends which are preferably cylindrical to facilitate the
connection of the elbows thereto, are flattened at regular intervals of a short
distance, alternately in planes at approximately right angles to one another,
the area of the tubes being considerably reduced and the form of passage con-
siderably elongated. The tubes are preferably supported at their ends by blocks
through which they pass, the blocks being so formed that each row shall form
a secure seating for the next row above it.
In some cases a reserve steam drum is suitably disposed in communication
with the uppermost tube of the series.
Improvements in Instantaneous Steam Generators.
We, WILLIAM SIMPSON, of 8, Minshull Street, Manchester, Cotton Manu-
facturer, WALTER LIGHT BODMAN, of Village View, Burnage Lane, Didsbury,
Carriage Builder, both in the County of Lancaster, & DANIEL HARRISON SIMPSON.
of One Oak, Cheadle Hulme, in the County of Chester, Engineer, do hereby
017

page_text: 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 improvements in that class of steam generators in
which water is injected in small quantities and at a rate proportionate to
immediate requirements, and the object of this invention is chiefly to obtain a
higher efficiency in that class of generator than has hitherto been obtained.
In accordance with our invention, the improved boiler is formed of several
parallel rows of tubes of the form hereinafter described suitably supported,
and having their ends connected together by tubular elbows in such a manner
as to form a coil and obtain a continuous passage of constricted area therethrough.
The tubes between their ends, which are preferably cylindrical to facilitate the
connection of the elbows thereto, are flattened at regular intervals of a short
distance alternately in planes at approximately right angles to one another, the
area of the tube being considerably reduced and forming a passage considerably
elongated.
The tubes are preferably supported at their ends by blocks through which
they pass, the blocks being so formed that each row shall form a secure seating
for the next row above it.
In some cases a reserve steam drum is suitably disposed in communication
with the uppermost tubes of the series.
And in order that our said invention may be more readily understood we have
hereunto annexed two sheets of drawings, illustrative of our invention and we
will now proceed to describe the same with the various figures and letters of
reference marked thereon.
On Sheet One,
Fig. 1 illustrates a front elevation of a boiler constructed in accordance with
our invention, and with one half of the front cover or casing removed to shew
the tubes more clearly. Fig. 2 is a longitudinal section of the boiler through
the casing.
On Sheet Two,
Fig. 3 illustrates one of the tube sections of which the boiler is composed,
and Fig. 4 is a transverse section of the tube.
Figs. 5, 6 and 7 illustrate the forms of supports used with the tubes.
Referring to Sheet One, our improved boiler is composed of tubes (A) nested
together within a casing (B) above the furnace (C). The said tubes are by
preference, in U shaped sections (see Fig. 3) and the several sections are con-
nected to each other by tubular elbows (D) and screwed couplings (E) in such
a manner as to allow the tubes to lie in parallel rows as illustrated. The said
tube sections are produced from single plain steel tubes flattened at, by preference,
regular intervals of a short distance alternately in planes at approximately right
angles to one another (as shewn more clearly in Figs. 3 and 4) and bent into
the formation. Each tube is left plain at the bend (F) and such bend, and
the respective ends of the tubes, rest in cast metal blocks (G) and (H) (see
Figs. 5, 6 and 7 respectively adapted to lie one above another, so that each row
of blocks forms the support of the row above, besides allowing for the removal of
any particular tube section for renewal, or repair, without, of necessity disturb-
ing the other sections, or their supports. With all the rows of tubes in position
the said blocks form a complete wall, affording a protection for the outer cas-
ing (3) against the excessive heat of the furnace and allowing of ready renewal
when burnt out. The bottom rows of blocks (G) and (H) are of a slightly
different form to the others and rest upon brackets (I) and (J) or other suitable
supports. The blocks (H) are double the size of blocks (G), and have elongated
slot (H) to receive the bends (F) of the tube sections.
Water is admitted to the boiler in small and regular quantities under con-
trol of any suitable feed-water supply apparatus, but preferably that described

page_text: in the accompanying Application No. 4485/98 and enters, by preference, at the
lowest row of the tubes. The steam leaves the boiler at the top row, or from the
second or third row from the top, and such uppermost row or rows may form part
of the feed-water supply pipe, so that before entering the boiler the water may be
heated by the heat from the furnace, as well as utilise the waste gases of the
furnace.
The steam after leaving the boiler enters (by preference) a reserve drum (K)
through which the feed-water pipe passes on its way to the boiler in the manner
set forth, in the Specification of Application for Patent No. 4485/98 simulta-
neously filed with this application.
The boiler casing, furnace, disposition of the grate, or fire-bars, or the form
proportion, number and size of the tube sections or their grouping and setting
may vary according to the uses of the boiler, whether for stationary or marine
purposes and for use as a super-heater, or high pressure steam generator.
Having thus particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we wish it to be
understood that we are aware it is not new to indent a tube in a manner herein
described and that we make no claim to such indenting, but what we do
claim is: :-
1: An instantaneous steam generator, or "flash" boiler, consisting of a group
of tubes of the kind described and joined together in the manner set forth, in
combination with a casing, grate, furnace, flue-outlet, and end supports sub-
stantially as set forth.
"flash
2: In an instantaneous steam generator or
boiler shaped tube
sections of the kind described, tubular elbows and couplings to join such sections
and elbows, and water inlet and steam outlet pipe connections all in com-
bination substantially as herein set forth and illustrated on the accompanying
drawings.
3: In "flash" or like boilers, the use of the cast metal blocks, shewn in
Figs. 5, 6 and 7 of the accompanying drawings as and for the purposes set forth.
Dated this 22nd day of December 1898.
WILLIAM SIMPSON.
WALTER LIGHT BODMAN,
DANIEL HARRISON SIMPSON.
By John G. Wilson & Co.,
Agents.