IMPROVEMENTS IN THE ARRANGEMENT on Canan SRAM IN STEAM BOILERS
Year: 1863

page_text: LETTERS PATENT to William Louis Winans, of Dover Street, in the
County of Middlesex, Gentleman, and Thomas Winans, of Baltimore, in
the United States of America, but now residing at Dover Street aforesaid,
Gentleman, for the Invention of "IMPROVEMENTS IN THE ARRANGEMENT
on Canan SRAM IN STEAM BOILERS."
Sealed the 12th December 1868, and dated the 23rd June 1868.
PROVISIONAL SPECIFICATION left by the said William Louis Winans
and Thomas Winans at the Office of the Commissioners of Patents,
with his Petition, on the 23rd June 1868.
We, WILLIAM LOUIS WINANS, of Dover Street, in the County of Middlesex,
Gentleman, and THOMAS WINANS, of Baltimore, in the United States of
America, but now residing at Dover Street aforesaid, Gentleman, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE ARRANGE-
MENT OF APPARATUS FOR SUPERHEATING STEAM IN STEAM BOILERS," to be as
follows:-
This Invention of "Improvements in the Arrangement of Apparatus for
Superheating Steam in Steam Boilers," consists in arranging and combining
the superheating apparatus with the other parts of the boiler in such a manner
that the attendant engineer may cause the steam to be either superheated or
not as may be deemed desirable. To this end the superheating apparatus is
placed in some convenient part of the flue or passage between the fire-place
and the chimney, and is provided with a valve or valves, whereby the admission

page_text: of the heated gases from the fire-place may be regulated at pleasure. By
this means the hot air or gases after passing from the fire-place through the
flue tubes of the boiler may be passed either through a passage communicating
direct with the chimney, or they may be made wholly or partly to pass through
the superheating apparatus. By this arrangement of apparatus the steam may
be kept constantly superheated to any desired extent, and when superheated
steam is not required the hot air or heated gases may be shut off from the
apparatus by closing the valve or valves which open the communication
between the superheater and the flue.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Louis Winans and Thomas Winans in the Great
Seal Patent Office on the 23rd December 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
LOUIS WINANS, of Dover Street, in the County of Middlesex, Gentleman, and
THOMAS WINANS, of Baltimore, in the United States of America, but now
residing at Dover Street aforesaid, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of June, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said William Louis Winans and Thomas Winans, Her special license
that we, the said William Louis Winans and Thomas Winans, our executors,
administrators, and assigns, or such others as we, the said William Louis
Winans and Thomas Winans, our executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN THE ARRANGEMENT OF APPARATUS FOR SUPERHEATING STEAM
IN STEAM BOILERS," upon the condition (amongst others) that we, the said
William Louis Winans and Thomas Winans, by an instrument in writing
under our hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.

page_text: NOW KNOW YE, that we, the said William Louis Winans and Thomas
Winans, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, reference being had to the
Drawing hereunto annexed, and to the letters and figures marked thereon,
(that is to say)
This Invention of " Improvements in the Arrangement of Apparatus for
Superheating Steam in Steam Boilers," consists in arranging the superheating
apparatus in such a manner that the admission of the heated gases which pass
from the fire-place through the tubes to the superheater may be regulated by
the attending engineer, so as to cause the whole or any desired proportion of
the heated gases to pass through the superheater, or so as to cause the whole
of it to pass directly to the chimney without entering the superheating
apparatus, by which means the steam may be heated to any practically useful
degree of temperature. To this end the superheating apparatus is placed in
the smoke box, or in the uptake, or in any suitable and convenient place in the
flue or passage between the fire-place and the chimney, and is provided with a
valve or valves whereby the admission of the heated gases from the fire-place
into the superheater may be regulated at pleasure. By means of the valve or
valves the hot air or gases after passing from the fire-place through the fluo
tubes of the boiler may be made to pass either through a passage com-
municating directly with the chimney or they may be made wholly or partly to
pass through the superheating apparatus. By this arrangement of apparatus
and the proper adjustment of the valve or valves the steam may be kept
constantly superheated to any required and useful degree of temperature, and
when it is preferred not to use superheated steam tlie hot air or heated gases
may be shut off from the superheating apparatus by closing the valve or valves
which open the communication between the superheater and the flue or
passage. By this arrangement of apparatus the hot air or heated gases may
be shut off from the superheater when steam is being got up in the boiler, and
when the machinery is at rest, and no steam is passing through the super-
heater, therefore the tubes and other parts of the superheating apparatus will
not be damaged by becoming overheated when not in use.
In the accompanying Drawing, at Fig. 1, the superheating apparatus is
shewn as applied to a vertical tubular boiler, but only so much of the boiler
is shewn as is necessary to show the application of the present Invention;
Fig. 2 is an external elevation of the same; and Fig. 3 is a sectional plan view
of the same. The particular form of vertical tubular boilor, to which we have

page_text: shewn the Invention as applied, is one that we have invented and for which
we have obtained Letters Patent.
The boiler has a vacant space a, Fig. 1, in the centre for the convenience
of allowing a man to get down and examine and clean the internal parts of
the boiler, and to give a free and better circulation of the water in the boiler,
as described in the Specification of the other Letters Parent above referred to.
This space is surrounded by the flue tubes b, b, up which the heated vapours and
gaseous products of combustion pass, either directly to the chimney through
the open annular space c, c, which surrounds the steam dome d, or they may
be directed through the superheating chamber e, in which are arranged a
series of circular tubes f,f,f, which communicate with the upper part of the
boiler, so that steam is caused to circulate therein, and be superbeated when
required. Beneath the open end of the superheating chamber are arranged
a series of valves g, g, g, mounted on spindles, which also carry other valves
g*, g*, g*, for closing the entrance to the annular space c when it is required
to direct the heated gases into the superheating chamber. At the outer ends
of these valve spindles are mounted; the sector picces h, h, h, as seen best in
the detached plan, front and end views, Figs. 4, 5, and 6, of these valves and
their appendages. The sector pieces h are connected by chains or metal bands
to a ring i, i, which surrounds the boiler, as seen best in Fig. 2, and is sup-
ported on the sector pieces on which it simply rests, as seen in Figs. 5 and 6,
so that it may be moved round horizontally in either direction, in order to act
on the spindles of the valves g, g, and thereby raise or lower the latter. This
horizontal motion of the ring i is effected by means of a tangent screw j,
which is supported in brackets secured to the sides of the boiler. On this
tangent screw is mounted a stud block k, and it is provided at one end with
a bevil wheel 2, which is driven by a similar wheel on the upper end of the
vertical shaft m, which is provided at its lower end with a winch handle,
whereby it may be turned in either direction. It will be understood from the
foregoing description that by closing the valves 9, 9, the heated vapours will
.be prevented from entering the superheating apparatus, and consequently the
steam in the circular pipes or tubes f, f, will simply be common steam.
The operation of the several parts will be as follows:-Supposing it to be
desired to superheat the steam which is circulating in the pipes or tubes f, f,
the valves g, g, will be open, and hang down in the position shown in Figs. 1
and 5, and at g in Fig. 6, the smaller valvės 9*, 9*, being brought into the
position shewn in the Figs., in order to close the lower end of the circular
space cand prevent the heated gases from passing through the same. The

page_text: heated gases from the fire will therefore pass up into the superheating
chamber, and will circulate among the tubes f, f, which will abstract a portion
of the heat therefrom. It will be seen on referring to Fig. 6 that the two
valves g and g* are connected together by a link n, and therefore these two
valves must always work together. If it be desired to put the superheating
apparatus out of work, this object may be effected by simply turning the winch
handle at the end of the vertical shaft m, so as to move the ring i round, and
thereby cause the spindles of the valves 9 and 9* to turn on their axes,
thereby closing the valves g, and opening the valves g*. The heated gases will
then be prevented from passing up into the superheating chamber, but will be
forced to ascend through the annular space c, and pass direct into the chimney.
It will therefore be understood that the superheating of the steam will bo
entirely under the control of the engineer in attendance, as the heated gases
may all be made to pass into the superheating chamber, or all into the annular
space, or both these channels may be partially open, as indicated by dots in
Fig. 6, so that part of the heated gases will pass through the one space, and
the remainder through the other.
Having now described our Invention, and the manner of carrying the same
into effect, we wish it to be understood that we do not confine ourselves to the
precise arrangement of parts herein set forth, so long as the peculiarity of our
Invention be retained; but what we do claim is the arrangement of the
superheating apparatus so that the hot air or heated gases from the furnace
may either be caused wholly or partially to pass through or be shut off from
the superheating apparatus for the purposes herein set forth.
In witness whereof, we, the said William Louis Winans and Thomas
Winans, have hereunto set our hands and seals, this Seventeenth
day of December, in the year of our Lord One thousand eight hundred
and sixty-three