IMPROVEMENTS IN THE CONSTRUCTION OF STEAM AND HOT WATER BOILERS AND COILS IN SECTIONS
Year: 1870

page_text: LETTERS PATENT to Thomas Seaville Truss, Civil Engineer, of
Ebenezer House, 434, Old Kent Road, in the County of Surrey,
for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF STEAM
AND HOT WATER BOILERS AND COILS IN SECTIONS."
PROVISIONAL SPECIFICATION left by the said Thomas Seaville
Truss at the Office of the Commissioners of Patents, with his
Petition, on the 9th March 1870.
I, THOMAS SEaville Truss, Civil Engineer, of Ebenezer House, 434,
Old Kent Road, in the County of Surrey, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF STEAM AND
HOT WATER BOILERS AND COILS IN SECTIONS," to be as follows:-
These improvements consist in the construction of boilers and coils
in sections applicable to hot water, and steam apparatus for warming

page_text: buildings by the circulation of hot water or steam, and for other
purposes.
The boiler consists of two or more sections or parts, each section being
a distinct part of the whole with or without tube or tubes, attached or to
form a tube of itself, the sections are joined together by flexible joints,
so that any section may be removed, the joint is made by one or more
projections on one section and one or more recesses on another section,
the projections fitting into the recesses, which recesses are acted upon by
the contents of the boiler water or steam, thus protecting from the action
of the fire the joint making material inserted between the butting
surfaces of the sections, which, by preference, for security of the joint
are of undulating form, the butting surfaces being drawn together by
screw bolts to join the sections together and make a whole boiler.
The coil consists of two or more sections each forming a tube or box
which are joined together by flexible joints, so that any section may be
removed; the joint is made by a recess in one section formed to receive
the end of another section, the butting surfaces of which are by
preference of undulating form, and between these surfaces the joint
making material is inserted; the several sections being drawn together
by screw bolts, the joints of the several sections are made and the coil
is complete.
When the joints of the boiler sections are not to be exposed to direct
fire the joints may be made as the joints of the coils. The several joints
may also be made rigid.
As my said improvements are capable of various modifications without
departing from the principle thereof, I do not restrict myself to the
material dimensions or the precise form of the several parts.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Seaville Truss in the Great Seal Patent
Office on the 7th September 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
SEAVILLE TRUSS, Civil Engineer, of Ebenezer House, 434, Old Kent
Road, in the County of Surrey, send greeting.
3

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of March, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Thomas Seaville Truss Her special licence that
I, the said Thomas Seaville Truss, my executors, administrators, and
assigns, or such others as I, the said Thomas Seaville Truss, my
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
CONSTRUCTION OF STEAM AND HOT WATER BOLLERS AND COILS IN SECTIONS," upon
the condition (amongst others) that I, the said Thomas Seaville Truss,
my executors or administrators, by an instrument in writing under
my, or.
their, or one of their hands and scals, 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 Scal Patent Office within six calendar
months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Thomas Scaville Truss, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement; (that is to say,) reference being had to tho
Drawings hereunto annexed :-
-
My said improvements consist in the construction of boilers and coils
in sections applicable to hot water and steam apparatus for heating
buildings by the circulation of hot water or steam and for other
purposes.
The boilers consist of two or more sections or parts, each section
being a distinct part of the whole with or without tube or tubes
attached, but forming a tube of itself. The sections are joined together
by flexible joints, so that any section may be removed. The joint is
made by one or more projections on one section and one or more recesses
in another section, the projections fitting into the recesses which recesses
are acted upon by the contents of the boiler (water or steam) thus

page_text: protecting from the action of the fire the joint making material inserted
between the butting surfaces of the sections, which, by preference, for
better security of the joint are of undulating form, the butting surfaces
being drawn together by screw bolts to join the sections together and
make the joints of the same and so make the boiler complete.
The coils consist of two or more sections or parts, each forming a tube
or box which are joined together by flexible joints, so that any section or
part may be removed. The joint is made by one or more projections on
one section and one or more recesses in or on another section, the pro-
jections fitting into the recesses. The joint making material is inserted
between the butting surfaces of the sections, which by preference, for
better security of the joint are of undulating form, the butting surfaces
are drawn together by screw bolts to join the several sections together
and make the joints of the several sections, and so make the coil
complete.
When the joints of the boiler's sections are not in close proximity to
fire they may be made as the joints of the coils, and the coils may be
constructed in like manner as the boilers.
For some purposes the joint making material may be of almost rigid
material or to become rigid after application.
In order that the nature of my said improvements and in what manner
the same are to be performed, may be more fully understood, I will
proceed to describe the several Figures in the Sheet of Drawings hereunto
annexed.
Figure 1 is a longitudinal clevation part in section of a boiler
constructed of sections, each forming a tube of itself, in the manner
herein-before described; Figure 2 is part an external end view of the
same, and part a cross section of the same, the section being taken at
the line A, A. B, B, are the sections, having the recesses a, a, in them
to receive the projections b, b, on the ends of the sections C, C.
the butting surfaces of the sections B, B, and C, C, and d, d, is the joint
making material inserted between the butting surfaces c, c, whilst e, e, is
the water and steam space in the sections, and f, f, are the screw bolts.
c, c, are
Figures 3, 4, and 5 are part longitudinal sections of a few modifications
of the foregoing arrangement, and Figure 6 is a cross section of Figure 5
taken at the line D, D, showing a bar g inserted between the external

page_text: areas of the sections to close the space between them when they are so
required to be constructed. Figures 1 to 6 inclusive are marked with
the like letters of reference to the several parts.
Figure 7 is a longitudinal elevation part in section of a coil
constructed of sections, each section forming a tube of itself in the
manner herein-before described. Figure 8 is an external end view of
the same, and Figure 9 is a cross section of Figure 7 taken at the line E,
E. F, F, are the sections having the recesses h, h, formed on them to
receive the ends of the sections G, G, G; i, i, are the butting surfaces of
the sections F, F, and G, G, G; k, k, is the joint making material
inserted between the butting surfaces i, i; 1, 1, is the water or steam
space in the sections, and m, m, are the screw bolts. Figures 7 to 9
inclusive are marked with the like letters of reference to the several
parts.
To make the boiler or coil so constructed, I proceed by inserting the
packing material in the recesses of the recessed sections, this may be
india-rubber or any other suitable substance (which for convenience I
make into rings), I then insert the projections or ends of the other
sections made to fit into these recesses. I then apply the screw bolts
and with them draw the sections together until the requisite pressure is
applied upon the joint making material to make the joints of the sections
steam or water-tight.
As my said improvements are capable of various modifications without
departing from the principal thereof. I do not restrict myself to the
external form of the boilers or coils, nor to the exclusive use of screw
bolts to draw the several sections together or to materials or dimensions
or to the precise form of the several parts thereof.
Having now described the nature of my said improvements and in
what manner the same are to be performed, I declare that I claim as
my Invention the construction of boilers and coils in sections with
flexible joints, the packing material being applied between the butting
surfaces of the several sections and making the joints of the sections in
recesses, the internal areas of which are acted upon by the contents of
the boilers or coils, and also the construction of boilers and coils in
sections without sunken recesses for the joint making material for heating

page_text: buildings with hot water or steam, and for other purposes as herein-before
described.
In witness whereof, I, the said Thomas Seaville Truss, have here-
unto set my hand and seal, this Seventh day of September,
in the year of our Lord One thousand eight hundred and
seventy.
Signed, sealed, and delivered
in the presence of
CHARLES SHEPHERD,
25, Claremont Terrace,
Fentiman Road,
London, S.W.
THOMAS SEAVILLE TRUSS.
(L.S.)