IMPROVEMENTS IN THE CON- STRUCTION AND ARRANGEMENT OF PANS OR VESSELS, AND OF APPARATUS FOR HEATING THE SAME.
Year: 1874

page_text: LETTERS PATENT to Joseph Willoughby, of Plymouth, in the County
of Devon, William Arkinstall Southwell, of Palmerston Buildings,
Broad Street, in the City of London, Thomas James Briggs, of
Palmerston Buildings aforesaid, and Samuel Willoughby, of Ply-
mouth aforesaid; for the Invention of "IMPROVEMENTS IN THE CON-
STRUCTION AND ARRANGEMENT OF PANS OR VESSELS, AND OF APPARATUS FOR
HEATING THE SAME.'
"
caled the 25th September 1874, and dated the 31st March 1874.
PROVISIONAL SPECIFICATION left by the said Joseph Willoughby,
William Arkinstall Southwell, Thomas James Briggs, and Samuel
Willoughby at the Office of the Commissioners of Patents, with
their Petition, on the 31st March 1874.
We, JOSEPH WILLOUGHBY, of Plymouth, in the County of Devon,
WILLIAM ARKINSTALL SOUTHWELL, of Palmerston Buildings, Broad
Street, in the City of London, THOMAS JAMES BRIGGS, of Palmerston
Buildings aforesaid, and SAMUEL WILLOUGHBY, of Plymouth aforesaid,

page_text: :
"
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN THE CONSTRUCTION AND ARRANGEMENT OF PANS OR VESSELS, AND OF APPARATUS
FOR HEATING THE SAME," to be as follows
$
..
'
This Invention consists in the construction and arrangement of pans
or vessels employed for various manufacturing purposes, and of apparatus
employed for heating the same, whereby great advantages are obtained
as compared with the arrangements and combinations of previously
employed for like purposes.
Pans or vessels constructed for the purposes embraced by the present
Invention have usually been made of thick and very strong materials,
and the same have usually, when not heated directly by a fire or by
heated flues, been heated by passing steam or heated fluid into a
"jacket" formed and placed about the same.
Under the present Invention the pan or vessel is constructed in such
manner that although it is not brought into contact with any direct fire
heat a greater degree of heat is attained in the same than can be reached
by passing ordinary high-pressure steam or heated fluid into the
"jacket "as ordinarily constructed.
Under the present Invention a coil or range of strong (and by pre-
ference wrought) iron pipes of the requisite sweep or shape is placed in
juxtaposition or in contact with the pan or vessel, the ends of such coil
or range being connected with a second coil or range of pipes which is
placed in a furnace at a convenient distance from the pan or vessel, the
whole range of pipes being filled with water, and rendered by well known
means and appliances perfectly water tight. Any requisite degree of
heat may be imparted to the pan or vessel by means of the last mentioned
arrangement. The pan or vessel is formed of such thickness as will
possess sufficient strength to contain the substance or substances under
treatment, but as at the same time will allow the heat evolved from the
coil or range of pipes to pass through the same.. This last mentioned
coil or range of pipes may be placed within an external casing or jacket
of metal, brickwork, or other suitable material or materials which may,
if desired, be covered with protecting substance or substances capable of
preventing the conduction and dispersion of heat.
When cast-iron pans are employed the coils or ranges of pipes may be a
cast with and so as to form part thereof, or the pipes or ranges may be

page_text: placed in recesses in the apparatus for that purpose, and covered with a
suitable film of protecting material.
Pans constructed and' arranged and heated in accordance with this
Invention, as herein-before described, may be advantageously employed
as the bottoms of stills, the upper parts thereof and heads being supplied
as well understood..
Pans constructed and arranged and heated in accordance with this
Invention, as herein-before described, may be advantageously employed
as the bottoms of stills, the upper parts thereof and heads being supplied
as well understood..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Willoughby, William Arkinstall Southwell,
Thomas James Briggs, and Samuel Willoughby in the Great Seal
Patent Office on the 30th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, JOSEPH
WILLOUGHBY, of Plymouth, in the County of Devon, WILLIAM
ARKINSTALL SOUTHWELL, of Palmerston Buildings, Broad Street, in the
City of London, THOMAS JAMES BRIGGS, of Palmerston Buildings.
aforesaid, and SAMUEL WILLOUGHBY, of Plymouth, aforesaid send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of March, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-.
cessors, give and grant unto us, the said Joseph Willoughby, William
Arkinstall Southwell, Thomas James Briggs, and Samuel Willoughby,
Her special licence that we, the said Joseph Willoughby, William
Arkinstall Southwell, Thomas James Briggs, and Samuel Willoughby,
our executors, administrators, and assigns, or such others as wc, the.
said Joseph Willoughby, William Arkinstall Southwell, Thomas James
Briggs, and Samuel Willoughby, our exccutors, 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
CONSTRUCTION. AND
ARRANGEMENT OF PANS-OR VESSELS, AND OF APPARATUS FOR HEATING THE SAME,"
.
3312

page_text: upon the condition (amongst others) that we, the said Joseph Willoughby,
William Arkinstall Southwell, Thomas James Briggs, and Samuel
Willoughby, our executors or administrators, by an instrument in
writing under our, or their, or one of their 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.
NOW KNOW YE, that we, the said Joseph Willoughby, William
Arkinstall Southwell, Thomas James Briggs, and Samuel Willoughby,
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 Drawings hereunto annexed, and to the figures and letters marked
thereon, that is to say :-
Our said Invention consists in the construction and arrangement of-
pans or vessels employed for various manufacturing purposes, and of
apparatus employed for heating the same, whereby great advantages are
obtained as compared with the arrangements and combinations previously
employed for like purposes.
Pans or vessels constructed for the purposes embraced by the present..
Invention have usually been made of thick and very strong materials,
and the same have usually when not heated directly by a fire or by
heated flues been heated by passing steam or heated fluid into a "jacket
formed and placed about the same.
:
:
"
Under the present Invention the pan or vessel is constructed in such
manner that although it is not brought into contact with any direct fire
heat a greater degree of heat is, attained in the same than can be reached
by passing ordinary high-pressure steam or heated fluid into the "jacket"
as ordinarily constructed.
t
Under the present Invention a coil or range of strong (and by pre-
ference wrought) iron pipes of the requisite sweep or shape is placed in
juxtaposition or in contact with the pan or vessel, the ends of such coil
or range being connected with a second coil or range of pipes which is

page_text: placed in a furnace at a convenient distance from the pan or vessels, the
whole range of pipes being filled with water, and rendered by well known
means and appliances perfectly water tight. Any requisite degree of
heat may be imparted to the pan or vessel by means of the last men-
tioned arrangement. The pan or vessel is formed of such thickness as.
will possess sufficient strength to contain the substance or substances.
under treatment, but as at the same time will allow the heat evolved
from the coil or range of pipes to pass through the same. This last
mentioned coil or range of pipes may be placed within an external casing
or jacket of metal, brickwork, or other suitable material. or materials,
which may, if desired, be covered with protecting substance or substances›
capable of preventing the conduction and dispersion of heat..
:
When cast-iron pans are employed the coils or ranges of pipes may be
cast with and so as to form part thereof, or the pipes or ranges may be
placed in recesses in the apparatus for that purpose, and covered with a
suitable film of protecting material.
Pans constructed and arranged and heated in accordance with this
Invention, as herein-before described, may be advantageously employed
as the bottoms of stills, the upper parts thereof and heads being supplied,
as well understood.
We will now proceed to refer to the annexed Drawings, from which
the nature of our said Invention will be more clearly understood.
Figures 1, 2, and 3 shows sectional elevations of jacket pans fitted and™
arranged with pipes and furnace for heating same.
Figure 1 shews the form of common jacket pan; Figures 2 and 3, a
shallow pan, such as is employed in evaporating brine. The letters
marked on each are so placed that the following description is applicable
to both Figures 1, 2, and 3.
The pan A is formed of metal, and not being subject to pressure from.
the outside, nor to the wearing influence of fire heat, is made of such
thickness only as will give sufficient strength to bear the weight of
contents under treatment. B is a range of pipes formed to the shape of
the pan, the ends of which pass through the jacket C, and are continued
to the furnace by the pipes è, e, e, é,
The furnace D is placed at any
}

page_text: convenient distance from the pan, and one or more expansion-chambers F
are provided in the flow pipe between the pan A and furnace D. A valve
is placed at H, by which the supply of water is replenished. A pressure
guage is fixed in the pipes, as shewn at J. On the pipes being charged
with water, and made perfectly close, fire is lighted in D, and any
requisite degree of heat is thus imparted to the contents of the pan A.
The space about pipes between jacket and pan may be filled in with any
heat-conducting material.
It should be here mentioned that inasmuch as jacket pans are made
of various shapes the arrangement, and quantity of pipes in the same will
necessarily vary according to the shape and capacity of pan, and in some
cases the pipes, instead of being coiled, are placed in several distinct
lengths sufficient to give the requisite heating surface, the furnace being
suitably formed to receive the ends of such pipes. In some cases the
valve at H is dispensed with, and the quantity of water in each pipe is
so regulated as to work without expansion chambers F. The use of such
modifications and adaptations does not however constitute any departure
from the principles of our said Invention, but are in fact fully embraced

page_text: Secondly. The employment of pans so constructed and arranged and
cated as bottoms for stills, substantially as herein-before described and
et forth, or any mere modifications thereof.
In witness whereof, wc, the said Josepli Willoughby, William
Arkinstall Southwell, Thomas James Briggs, and Samuel
Willoughby, have hereunto set our hands and scals, this Twenty-
sixth day of September, in the year of our Lord One thousand
eight hundred and seventy-four.
JOSEPH WILLOUGHBY.
(L.S.)
W. A. SOUTHWELL.
(L.S.)
T. J. BRIGGS.
(L.S.)
SAMUEL WILLOUGHBY. (L.S.)