IMPROVEMENTS IN THE FORMATION OF THE JOINTS OF STEAM BOILERS, TANKS, CASKS, WAGONS, BOXES, AND OTHER SIMILAR STRUCTURES IN METAL, AND IN MACHINERY OR APPARATUS THEREFOR.”
Year: 1878

page_text: LETTERS PATENT to Robert Hudson, of Gildersome, in the County of York,
Engineer, for the Invention of "IMPROVEMENTS IN THE FORMATION OF THE
JOINTS OF STEAM BOILERS, TANKS, CASKS, WAGONS, BOXES, AND OTHER
SIMILAR STRUCTURES IN METAL, AND IN MACHINERY OR APPARATUS THEREFOR.”
"
Sealed the 4th March 1879, and dated the 25th September 1878.
"
PROVISIONAL SPECIFICATION left by the said Robert Hudson at the Office
of the Commissioners of Patents on the 25th September 1878.
ROBERT HUDSON, of Gildersome, in the County of York, Engineer. IMPROVE-
MENTS IN THE FORMATION OF THE JOINTS OF STEAM BOILERS, TANKS, CASKS,
WAGONS, BOXES, AND OTHER SIMILAR STRUCTURES IN METAL, AND IN MACHINERY
OR APPARATUS THEREFOR."
My Invention relates to the formation of joints of steam boilers, tanks, casks,
wagons, boxes, and other similar structures in metal, by bevil flanging turned
either towards the inside or outside of the boiler or other structure, and forming
when the main plates are at right angles an angle of about 45 degrees with the
said plates.
The plates are rivetted together at the centre of such flanging. In some cases
instead of bevil flanging I join the plates by bending both the edges to be joined
together in a circular or segmental form, and rivetting them together as in the
above-described bevil flanging. In both cases the centre line of the rivets is at an
angle of about 45 degrees with the sides of the plates. In this system of jointing
angle iron a second joint and one row of rivets are dispensed with. In lieu of
rivetting, such bevil, or circular, or segmental flanges may be welded together.
For preparing or flanging the aforesaid plates to the forms required by the pecu-
liarity of the said joints I use swaging or embossing dies of a configuration suitable
to the required form of joint, and actuated by a steam or other power hammer, or
by hydraulic or other convenient press, or by a rolling machine having suitably
shaped rolls.
By my Invention the plates are not subjected to the severe strain or distortion
of the metal usual where one of the plates has to be bent or flanged to a right
angle

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Hudson in the Great Seal Patent Office on the 25th March
1879.
ROBERT HUDSON, of Gildersome, in the County of York, Engineer.
"IMPROVE-
MENTS IN THE FORMATION OF THE JOINTS OF STEAM BOILERS, TANKS, CASKS,
WAGONS, BOXES, AND OTHER SIMILAR STRUCTURES IN METAL, AND IN MACHINERY
OR APPARATUS THEREFOR."
My Invention relates to the formation of the joints of steam boilers, tanks, casks,
wagons, boxes, and other similar structures in metal by bevil flanging turned either
towards the inside or outside of the boiler or other structure, and forming when the
main plates are at an angle of ninety degrees (or right angles) an angle of about forty-
five degrees with the said plates, as shown in the accompanying Drawings at A, A,
Fig. 1, and to an enlarged scale in Figs. and 3. The plates are rivetted together
at the centre B of such flanging. In some cases instead of bevil flanging I join the
plates by bending both the edges to be joined together in a circular or segmental
form, as shewn at Fig. 4, and rivetting them together, as in the above-described
bevil flanging. In each case the centre line B of the rivets is at an angle of about
forty-five degrees with the side of the plates. In this system of jointing angle iron
a second joint and one row of rivets are dispensed with. In lieu of rivetting, such
bevil, or circular, or segmental flanges may be welded together.
For preparing or flanging the aforesaid plates to the form required by the pecu-
liarity of the said joints I use swaging or embossing dies C, D, E, F, Figs. 5 and 6,
of a configuration suitable to the required form of joint, and actuated by a steam or
other power hammer, or by hydraulic or other convenient press. In the accom-
panying Drawings I show the said swaging or embossing dies C, D, and E, F,
operated by a hydraulic press. I also produce the same kind of flanging by a
suitably driven rolling machine having suitably shaped rolls G and H, as shewn in
Figs. 7, 8, and 9, the part under operation being meanwhile suspended in the bight
of the rope I, or in any other convenient manner. When the flange is required to
be turned outward, as shewn in full lines at J, Fig. 8, the roll G is the external roll
and the roll H the internal roll; and when the flange is required to be turned
inwards, as shewn in dotted lines at K, Fig. 8, the roll G is the internal roll and the
roll-H the external roll. When a circular or partially circular end plate of a boiler,
cask, or other structure is required to be flanged, a hole is formed in the centre of
such circular or partially circular part, by which it is mounted on a fixed stud L,
Fig. 7, which forms the centre of motion of said part whilst passing between the
flanging rolls G and H.
By my Invention the plates are not subjected to the severe strain or distortion
of the metal usual where one of the plates has to be bent or flanged to a right
angle.
And having described the nature of my said Invention and the manner of carrying
the same into practical effect, I wish it to be understood that under the above in
part recited Letters Patent I claim, the forming the joints of steam boilers, tanks,
casks, wagons, boxes, and other similar structures, substantially as herein-before
described with reference to the accompanying Drawings. I also claim the arranging
machinery or apparatus for that purpose, as herein-before described, and shown in
my Drawings.
In witness whereof, I, the said Robert Hudson, have hereunto set my hand
and seal, this Eighteenth day of March, in the year of our Lord One
thousand eight hundred and seventy-nine.
ROBERT HUDSON. (L.S.)