AN IM- PROVED JOINT FOR CONNECTING THE HEADS AND CAPS OF TUBULOUS BOILERS
Year: 1872

page_text: LETTERS PATENT to Richard Hobbs Taunton, of Birmingham, in the
County of Warwick, Manufacturer, for the Invention of "AN IM-
PROVED JOINT FOR CONNECTING THE HEADS AND CAPS OF TUBULOUS BOILERS."
COMPLETE SPECIFICATION filed by the said Richard Hobbs Taunton
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 19th December 1872, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
HOBBS TAUNTON, of Birmingham, in the County of Warwick, Manufac-
turer, do hereby declare the nature of the said Invention for "AN
IMPROVED JOINT FOR CONNECTING THE HEADS AND CAPS OF TUBULOUS BOILERS," and
in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement thereof, reference
being had to the Drawings hereunto annexed, and to the letters and
figures marked thereon, that is to say :-
My Invention is more especially applicable to the description of boiler
known as "Root's Patent," the patents for which were granted to

page_text: William Edward Newton, and are dated November 5th, 1867, and
April 7th, 1869. The improved joint may however be applied in the
construction of other descriptions of tubulous boilers, and the object of
my Invention is to provide a steam-tight joint in connecting the heads
and caps of such boilers, which will be capable of resistance under high
pressure, dispensing with the employment of the flexible packing or
washers in general use, which are found to be imperfect when subject to
more than ordinary pressure.
Referring to the Drawings, Figure 1 is a front elevation, and Figure 2
a sectional side view (full size) of a portion of a tubulous boiler shewing
the heads (a, a',) of two tubes with the cap plate (6), provided with
caps (c, c¹,) fitted to the heads (a, a',) the cap plate (6) being secured by
means of bolts and nuts.
My improved joint consists of an annular metal ring (d); Figure 2,
V or wedge shaped on either side in section, and having knife or feather
edges for fitting in corresponding V. or wedge shaped grooves formed
upon the face of the heads as shewn at (e) and also upon the face of the
caps as at (f), thus when the annular rings (d) are in position in the
grooves of the meeting edges of the heads and caps, and the caps
tightened up by means of the screw nuts the annular rings will form a
perfectly steam-tight joint or connection, and capable of resisting high
pressure. Or if preferred, and as shewn in Figure 3, I purpose forming
upon the meeting face of either the head or cap a V or wedge shaped
collar (g) having a knife or feather edge for fitting into a corresponding
Vor wedge shaped recess or groove cut upon the meeting face of the
cap or head so that when fitted together the wedge shaped collar upon
the one face will fit into the V shaped groove upon the other to form the
joint.
Again, as illustrated in Figure 4, I form a V or wedge shaped collar (i)
having a knife or feather edge either upon the head or cap for fitting
against the plain edge or face of the cap or head without any corres-
ponding groove for the feather edge to fit into, and by which means I
obtain a steam-tight joint.
Having thus described the object and nature of my said Invention,
and the manner in which the same is to be carried into effect, I claim,-
The improvements in connecting the heads and caps of tubulous boilers
for producing steam-tight joints by the employment of a V or wedge

page_text: shaped collar having a knife or feather edge, and formed either upon the
head or cap for fitting against the plain edge or face of the cap or head,
or into a corresponding groove cut in the face of the cap or head, and I
also claim inserting a V or wedge shaped annular metal ring having
knife or feather edges between the meeting faces of the head and cap
grooving, such head and cap to receive the ring for the purpose and in
manner as herein more fully set forth and specified.
In witness whereof, I, the said Richard Hobbs Taunton, have here-
unto set my hand and seal, this Eighteenth day of December,
in the year of our Lord One thousand eight hundred and seventy-
two.
RICHARD HOBBS TAUNTON. (L.S.)