IM- PROVEMENTS IN WELDING TUBES, PIPES, AND OTHER TUBULAR OR CIRCULAR ARTICLES, AND IN APPARATUS TO BE USED THEREIN
Year: 1875

page_text: LETTERS PATENT to Bristow Hunt, of Serie Street, Lincoln's Inn, in
the County of Middlesex, Gentleman, for the Invention of "IM-
PROVEMENTS IN WELDING TUBES, PIPES, AND OTHER TUBULAR OR CIRCULAR
ARTICLES, AND IN APPARATUS TO BE USED THEREIN."-A communication
from abroad by Harvey Klapp Flagler, of Boston, Massachusetts, in
the United States of America.
PROVISIONAL SPECIFICATION left by the said Bristow Hunt at the
Office of the Commissioners of Patents, with his Petition, on the
26th January 1875.
I, BRISTOW HUNT, of Serle Street, Lincoln's Inn, in the County of Mid-
dlesex, Gentleman, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN WELDING TUBES, PIPES, AND OTHER TUBULAR OR CIRCULAR
ARTICLES, AND IN APPARATUS TO BE USED THEREIN," (a communication to
me from abroad by Harvey Klapp Flagler, of Boston, Massachusetts, in
the United States of America,) to be as follows:-
-
The object of this Invention is to prevent the round bar and ball used
in welding tubes, pipes, flues, and other tubular or circular articles from

page_text: turning during the welding operation, and also to improve the construc-
tion of the ball in such manner as to effect a saving of metal, and at
the same time to enable it to secure a firmer hold of the bar so as to
prevent unsteadiness and wabbling, as well as rotation of the ball. To
attain these ends this Invention is designed, and it consists,―
Firstly. In holding the bar from turning by constructing it square at
its rear end, the square portion being located between two rollers having
V shaped grooves, the latter enclosing the bar and preventing it from
rotating.
E
And, Secondly. In a hollow welding ball or mandril formed at one 1
end on the interior, with longitudinal lugs or projecting pieces arranged
to form a bearing on each side of a square or other equivalently shaped
shoulder on the front end of the bar, the ball being thus securely held
from rotating or wabbling, and a saving of metal being effected.
The welding bar in common use is cylindrical, and has a similar 1
shoulder on its front end, which enters a corresponding socket in the
ball, there being nothing in the construction of the bar or ball to prevent
either or both of them from turning and twisting the pipe or other
article which is being welded.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the Bristow Hunt in the Great Seal Patent Office on the
9th July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BRISTOW
HUNT, of Serle Street, Lincoln's Inn, in the County of Middlesex,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of January, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Bristow Hunt, Her special
licence that I, the said Bristow Hunt, my executors, administrators,
and assigns, or such others as I, the said Bristow Hunt, my executors,
administrators, and assigns, should at any time agree with, and no

page_text: 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
WELDING TUBES, PIPES, AND OTHER TUBULAR OR CIRCULAR ARTICLES, AND IN
APPARATUS TO BE USED THEREIN," (a communication to me from abroad by
Harvey Klapp Flagler, of Boston, Massachusetts, in the United States
of America,) upon the condition (amongst others) that I, the said Bristow
Hunt, my executors or administrators, by an instrument in writing under
0 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 Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Bristow Hunt, do hereby declare
the nature of the said, Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement in writing, and on reference being had to tho
accompanying Drawings, that is to say:-
Figure 1 on the accompanying Sheet of Drawings represents a side
elevation, and Figures 2 and 3 end clevations of the apparatus to be
used in welding tubes, pipes, and other tubular or circular articles
according to this Invention.
Figure 4 represents an elevation showing the yoke and holding blocks
of the said apparatus.
Figures 5 and 6 are sections showing the construction of the welding
ball.
And Figure 7 shows a modification of the method of holding the ball
from turning on the bar.
The object of this Invention is to prevent the round bar and ball used
in welding tubes, pipes, flues, and other tubular or circular articles from
turning during the welding operation, and also to improve the construc-
tion of the ball in such manner as to effect a saving of metal, and at the
same time to enable it to secure a firmer hold of the bar so as to prevent
unsteadiness and wabbling, as well as rotation of the ball. To attain
these ends this Invention consists,-
Firstly. In holding the bar from turning by constructing it square at

page_text: V shaped grooves, the latter inclosing the bar and preventing it from
rotating.
And, Secondly. In a hollow welding ball or mandril formed at one.
end on the interior, with longitudinal lugs or projecting pieces arranged
to form a bearing on each side of a square or other equivalently shaped
shoulder on the front end of the bar, the ball being thus securely held
from rotating or wabbling, and a saving of metal being effected.
The welding bar in common use is cylindrical, and has a similar
shoulder on its front end, which enters a corresponding socket in the
ball, there being nothing in the construction of the bar or ball to prevent
either or both of them from turning and twisting the pipe or other
article being welded. This difficulty is obviated by providing the bar A
with the square or equivalently shaped rear end B and a similar shoulder
on its front end, which enters a corresponding socket in the ball C.
· I represents a framework, in which is located the shaft J of a roller J¹
provided with the V shaped or other similar groove j. K represents a
transverse lever pivotted to one side of the upper part of the frame I.
To the centre of the lever K is pivotted the bifurcated piece L, in which
is located the roller M, which is directly above the roller J', and is
grooved in like manner, and when the rollers come together a square or
other like opening is formed, which receives the end B of the rod A,
which end fits between the grooved rollers, and is thus prevented by
them from rotating. N represents a transverse lever, which is pivotted
to the end of the frame I near the lever K, and is provided with a pin n,
against which the end B of the rod A bears, as shewn in Figure 1.
P represents a transverse yoke, which is-pivotted at one end to the
frame I, and is secured by a pin p at the other. Under the yoke P are
blocks R, R', which are held in place thereby, and are grooved, as shown
in Figure 4, to correspond with the end B, which passes through the
same. The devices thus far described prevent the bar A from rotating
and moving longitudinally during the welding. operation. E, E¹, repre-
sents welding rollers arranged vertically and provided with semicircular
grooves e, e', so that when the peripheries of said rollers come in contact
a circular opening is formed between them, the rollers E, E', having
their bearings in the framework F, and are so arranged that their peri-
pheries do not come quite together, as shown in Figure 2. G, G,

page_text: represent carrying rollers (grooved like the rollers E, E¹,) located in
standards H on a level with the lower roller E¹:
:
The welding ball C is cast hollow and formed with a pointed head C¹.
At the end or base of the ball or mandril C, and extending into its inner
periphery are longitudinal lugs c, so arranged as to bear against or upon
each side of the square or other equivalently shaped shoulder in the
front end of the bar A, thereby preventing the ball from turning on the
bar.i
The metal which is to be welded into tubing is heated and bent into
the requisite form, passed through or between the welding rollers
enclosing the ball C and rod A, and is thus welded in the usual manner.
As fast as the welding is. performed the tube runs over the rollers G
until a section is formed reaching the square portion B. The welding
rollers are then stopped, the lever N is raised, and suitable power is
applied to the shaft J of roller J'. At the same time the roller M is
pressed upon the square portion of the bar A by the lever K, thus forcing
the bar into close contact with the roller J', which by its rotation carries.
the bar backward, leaving the section of tubing resting on the rollers G,
whence it may be removed by any suitable means.
Should the bar A become accidentally bent so that it cannot be
removed by the roller J'; as described, the yoke P, and blocks R, R', may
be removed, and the lever K with its roller M swung out of place, which
will enable the bar to be readily removed.
The formation of the lugs c on the interior of the ball or mandril C
allows the bar to have a more extended, and therefore a firmer bearing
within the ball than is possible by the ordinary construction without
using more metal in consequence of the spaces between the lugs; hence
by these improvements there is combined a saving of metal with an.
increased firmness of hold of the ball upon the bar.
The ball C, which by the old method sufficed for but one welding
operation, as it becomes bruised on one side may answer for several
operations by changing its position on the end of rod A, which latter
may be held by means of a pin or other suitable means instead of the
device shown. The ball may be held in place by means of feathers on
the end of the rod A, and corresponding grooves in the socket, as shown
in Figure 7.

page_text: Having now described the nature and object of the said Invention of
"Improvements in Welding Tubes, Pipes, and other Tubular or Circular
Articles, and in Apparatus to be used therein," together with the
manner in which the same is to be or may be performed or carried into
practical effect, I would remark in conclusion that I claim as the Inven-
tion communicated to me by the above-named Harvey Klapp Flagler,
the above described improvements in welding tubes, pipes, and other
tubular or circular articles, and the improved apparatus to-be used
therein, substantially as and for the purposes herein described and as
illustrated on the accompanying Drawings.
In witness whereof, I, the said Bristow Hunt, have hereunto set
my hand and seal, this Ninth day of July, in the year of our
Lord One thousand eight hundred and seventy-five.