IMPROVEMENTS IN FACTURE OF METALLIC TUBES, AND IN MACHINERY USED IN THE MANUFACTURE OF METALLIC TUBES
Year: 1868

page_text: LETTERS PATENT to Jerome Valentine Jones and George James
Williams, both of Birmingham, in the County of Warwick,
Manufacturers, for the Invention of "IMPROVEMENTS IN
FACTURE OF METALLIC TUBES, AND IN MACHINERY USED IN THE MANUFACTURE
OF METALLIC TUBES."
Sealed the 10th July 1868, and dated the 1st February 1868.
PROVISIONAL SPECIFICATION left by the said Jerome Valentine Jones
and George James Williams at the Office of the Commissioners of
Patents, with their Petition, on the 1st February 1868.
We, JEROME VALENTINE JONES and GEORGE JAMES WILLIAMS, both
of Birmingham, in the County of Warwick, Manufacturers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF METALLIC TUBES, AND IN MACHINERY USED IN THE MANUFACTURE
OF METALLIC TUBES," to be as follows:-
Our Invention relates principally to the manufacture of open-jointed
tubes made from sheet or strip iron and used in the manufacture of
metallic bedsteads, but is also applicable to the manufacture of open-

page_text: jointed tubes of other metals, such as steel, brass, and copper, and used
for other purposes.
We will describe our improvements in the manufacture of tubes as
applied to the manufacture of open-jointed iron tubes. The said tubes
are usually made of a strip of sheet iron bent into a cylindrical figure,
the opposite edges of the strip being presented to each other in a line
As the joint is left open, that is,
parallel to the axis of the tube.
is not brazed or soldered, the tube has little rigidity, and when made
up into a bedstead or other article the joint is liable to open slightly
and to crack or disfigure the ornamentation of the tube.
In making the said tubes according to our Invention we first bend
the strip of heated iron into a cylindrical form and afterwards twist
the open-jointed tube so made so as to cause the open joint to take
a helical or screw-like figure, the tube itself still retaining its cylindrical
form. As in the process of twisting the tube its cylindrical figure is
not strictly preserved we pass the tube after it has been twisted through
an ordinary draw plate, so as to restore the cylindrical form of the
tube if it has been lost during the twisting process.
Tubes made according to our Invention are much more rigid than
open-jointed tubes of the ordinary kind.
Our improvements in machinery used in the manufacture of metallic
tubes consist in the following arrangement of parts of machinery for
the manufacture of taper tubes:-Wo mount three rolls upon axes so
that cach roll shall be in contact or nearly in contact with the other
two. One of the said rolls has a conical figure and is somewhat less
in diameter than the taper tube to be manufactured. The other two
rolls may either be conical or cylindrical, and one of them is geared
to the conical roll. The sheet of metal from which a taper tube is
to be made cut of the proper shape is introduced between the conical
roll and the roll geared to it, and by the motion of the said two rolls
is carried between the conical roll and the third roll. By the pressure
of the said third roll the sheet of metal is so bent upon the conical
roll as to be made into an open-jointed taper tube, which can be finished
in the ordinary way. The sheet of metal may be bent into a trough-like
shape before being operated upon by the machine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Jerome Valentine Jones and George James
Williams in the Great Seal Patent Office on the 23rd July
1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, JEROME
VALENTINE JONES and GEORGE JAMES WILLIAMS, both of Birmingham,
in the County of Warwick, Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of February, in the
year of our Lord One thousand eight hundred and sixty-eight, in the
thirty-first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Jerome Valentine Jones and George
James Williams, Her special licence that we, the said Jerome Valentine
Jones and George James Williams, our executors, administrators, and
assigns, or such others as we, the said Jerome Valentine Jones and
George James Williams, 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 MANUFACTURE OF METALLIC
TUBES, AND IN MACHINERY USED IN THE MANUFACTURE OF METALLIC TUBES,"
upon the condition (amongst others) that we, the said Jerome Valentine
Jones and George James Williams, our executors or administrators, by
an instrument in writing under our or their hands and seals, or under
the hand and seal of one of us or them, 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 Jerome Valentine Jones and
George James Williams, 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
thereof, that is to say:-
Our Invention relates principally to the manufacture of open-jointed
tubes made from sheet or strip iron and used in the manufacture of

page_text: metallic bedsteads, but is also applicable to the manufacture of open-
jointed tubes of other metals, such as steel, brass, and copper, and to
tubes used for other purposes than that named.
.
We will describe our improvements in the manufacture of tubes
as applied to the manufacture of open-jointed iron tubes. The said
tubes are usually made of a strip of sheet iron bent into a cylindrical
figure, the opposite edges of the strip being presented to cach other
in a line parallel to the axis of the tube. As the joint is left
open, that is, is not brazed or soldered, the tube has little rigidity, and
when made up into a bedstead or other article the joint is liable to
open slightly and to crack or disfigure the ornamentation of the tube.
In making the said tubes according to our Invention we first bend
the strip of heated iron into a cylindrical form and afterwards twist
the open-jointed tube so made so as to cause the open joint to take a
helical or screw-like figure, the tube itself still retaining its cylindrical
form. As in the process of twisting the tube its cylindrical figure
is not strictly preserved we pass the tube after it has been twisted
through an ordinary draw plate, so as to restore the cylindrical form
of the tube if it has been lost during the twisting process.
Figure 1 represents a portion of an open-jointed tube made from
a heated strip of iron in the ordinary way and by the use of the
ordinary mechanism. The open joint a of the said tube is situated
in a line parallel to the axis of the tube. We take a tube of this
kind and fixing one of its ends in a vice or other holder we twist
the other end so as to cause the open joint a to take the helical 2
or screw-like figure represented in Figure 2, the tube still retaining
its cylindrical figure. By this twisting of the tube the edges of the
open joint are generally made to project above the other portion of
the tube, as represented in the end elevation of Figure 2, and the tube
is not truly cylindrical. These defects we remedy by passing the
twisted tube, Figure 2, through an ordinary draw plate, whereby the
projecting edges of the joint are drawn down or made to lic flush
with the other part of the tube and the cylindrical figure of the tube
is restored. The tube finished by being passed through the draw
plate is represented in Figure 3. By giving to the open joint of the
tube the helical or screw-like form represented in the Drawing the
tube is more rigid than tubes having an open joint parallel to the
axis of the tube, as represented in Figure 1, and the liability to open

page_text: slightly and to crack or disfigure the ornamentation of the tube
is avoided.
Tubes made according to our Invention may be used either cased
or uncased, that is to say, a thin brass or other tube may be drawn
upon the open-jointed iron tube, or the surface of the open-jointed
iron tube may be painted or otherwise ornamented.
Although the improvements described are especially applicable to
the manufacture of open-jointed tubes of iron yet the said improve-
ments may also be applied to the manufacture of open-jointed tubes
of steel, brass, and copper.
Our improvements in machinery used in the manufacture of metallic
tubes consist in the following arrangement of parts of machinery for
the manufacture of taper tubes:-We mount three rolls upon axes so
that cach roll shall be in contact or nearly in contact with the other
two.
One or two of the said rolls are made conical and somewhat
less in diameter than the taper tube to be manufactured; the other
roll or rolls may either be conical or cylinder, and are geared
together. The sheet of metal from which a taper tube is to be made
cut of the proper shape is introduced between the rolls, and by the
motion of the said rolls is bent into a conical shape. By the pressure
of the said third roll the sheet of metal is so bent upon the conical
roll as to be made into an open-jointed taper tube, which can be
finished in the ordinary way. The sheet of metal may be bent into
a trough-like shape before being operated upon by the machine.
Having now described the nature of our Invention, and the manner
in which the same is to be performed, we wish it to be understood
that we do not limit ourselves to the precise details herein described
and illustrated, as the same may be varied without departing from the
nature of our Invention; but we claim as our Invention,-
Firstly. The improvements in the manufacture of open-jointed
metallic tubes herein-before described and illustrated in the accom-
panying Drawing, that is to say, making the open joint of the said
tubes of a helical or screw-like figure, so as thereby to increase the
rigidity of the tubes and to prevent the liability of the joint to open
outwards and crack or disfigure the ornamentation of the tubes,
substantially as described and illustrated.

page_text: Secondly. The arrangement or combination of the parts of machinery
for the manufacture of open-jointed taper metallic tubes herein-before
described.
In witness whereof, we, the said Jerome Valentine Jones and
George James Williams, have hereunto set our hands and seals,
this Twentieth day of July in the year of our Lord One thousand
eight hundred and sixty-eight.
Witness,
GEORGE SHAW.
JEROME VALENTINE JONES. (L.S.).
GEORGE JAMES WILLIAMS.
(L.S.)