IMPROVEMENTS IN THE MANUFACTURE OF METAL TUBES, AND IN MACHINERY TO BE EMPLOYED. FOR THAT PURPOSE
Year: 1862

page_text: LETTERS PATENT to Edward Fewtrell, of Birmingham; in the County of
Warwick, Engine Fitter, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF METAL TUBES, AND IN MACHINERY TO BE EMPLOYED. FOR
THAT PURPOSE."
Sealed the 14th November 1862, and dated the 20th May 1862:
PROVISIONAL SPECIFICATION left by the said Edward Fewtrell at the
Office of the Commissioners of Patents, with his Petition,, on the 20th
May 1862.
I, EDWARD FEWTRELL, of Birmingham, in the County of Warwick, Engine
Fitter, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF METAL TUBES, AND IN MACHINERY TO BE EMPLOYED
FOR THAT PURPOSE," to be as follows, that is to say:―
My Invention consists of an improved arrangement and form of rolls by
which I am enabled to make metal tubes of various descriptions taper,
parallel-sided, or six-sided section. I employ three rolls suitably mounted in
holsters; the axes of these rolls are in the angles of a triangle, the rolls being
of a convex form from end to end in a line with the axis, so that the bite
shall come upon the tube after it has entered between the rolls; the holsters
are open in the centre, so that the tube entering through one holster passes
through the rolls which all revolve in one direction, and out through the
opposite holster. The rolls are geared in any suitable manner, and are fitted
with proper raising gear, so that they are capable of adjustment. In making

page_text: iron or steel tubes I take a short billet or thick tube, and heating it I remove
it upon a mandril to the rolls, by which it is produced or lengthened. Brass
or other metal tubes may be produced in the same way, but from a cold billet
if of brass, if of Muntz's metal or copper, either hot or cold. The billet,
which in brass, copper, or Muntz's metal may be cast, is of a form to suit the
rolls, and also the mandril; it is formed at one end with a beak or taper, so
that it may be forced into the rolls, small rollers or other suitable apparatus
being provided at the exit holster to conduct the tube as it emerges from the
ends of the rolls.. Any suitable machinery may be employed to force the
billets or tubes into the rolls.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edward Fewtrell in the Great Seal Patent Office on the
19th November 1862.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
FEWTRELL, of Birmingham, in the County of Warwick, Engine Fitter, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of May, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-fifth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Edward Fewtrell, Her special license that I, the said Edward Fewtrell, my
executors, administrators, and assigns, or such others as I, the said Edward
Fewtrell, 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 MANU-
FACTURE OF METAL TUBES, AND IN MACHINERY TO BE EMPLOYED FOR THAT PURPOSE,"
upon the condition (amongst others) that I, the said Edward Fewtrell, by
an instrument in writing under my hand and seal, 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 I, the said Edward Fewtrell, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed;

page_text: to be particularly described and ascertained in and by the following statement,
reference being had to the Drawings hereunto annexed, and to the letters
and figures marked thereon (that is to say):
-
My Invention consists of an improved arrangement and form of rolls by
which I am enabled to make metal tubes of various descriptions taper,
parallel-sided, or six-sided in section. I employ three rolls suitably mounted
in holsters; the axes of these rolls are in the angles of a triangle, the rolls
being of a convex form from end to end in a line with the axes, so that the
bite shall come upon the tube after it has entered between the rolls; the
holsters are open in.the centre, so that the tube entering through one holster
passes through the rolls which all revolve in one direction and out through the
opposite holster. The rolls are geared in any suitable manner, and are fitted
with
proper raising gear, so that they are capable of adjustinent. In making
iron or steel tubes I take a short billet or thick tube, and heating it I remove
it upon a mandril to the rolls, by which it is produced or lengthened. Brass
or other metal tubes may be produced in the same way, but from a cold billet
if of brass, if of Muntz's metal or copper, either hot or cold. The billet,
which in brass, copper, or Muntz's metal may be cast, is of a form to suit the
rolls, and also the mandril. It is formed at one end with a beak or taper, so
that it may be forced into the rolls, guide rollers or other suitable apparatus
being provided at the exit holster to conduct the tube as it emerges from the
ends of the rolls. Any suitable machinery may be employed to force the
billets or tubes into the rolls.
I will now proceed to describe in detail and by the aid of the accompanying
Drawings the mode in which I prefer to carry out my Invention.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan of my improved machinery as seen from above; Figure 2
is a transverse vertical section on the line (R, S,) on the plan; Figure 3 a
similar section on the line T, U; similar letters refer to similar parts in all the
Figures.
(A) is the driving band and pulley, worked by any suitable motive power;
(B) being the driving pinion, with its shaft revolving in plommer blocks (a, a);
(C) the main driving wheel and shaft of the machine, with its plommer
blocks (b, b); (D) is a clutch box and lever for throwing the machine into or
out of gear; (E) being a toothed wheel keyed on the main shaft (C),
revolving with it, and driving the three similar toothed wheels (F) and their
shafts, broken off for convenience in the Drawing, on which shafts are fixed,
as at (G) Figures 1 and 3) the drawing rollers for forming the tubes; (H) is -

page_text: a mandril pivotted at one end as shewn, and holding the billet I from which
the tube is to be produced; this mandril, with its billet, is forced between the
rolls by the screw and slide motion (K), which may be worked either by hand
or by gearing in connection with any suitable part of the machine.. I have
represented the rolls (G) with a collar (9) formed on their peripheries; the
entering half of each roll being thus smaller in diameter than the centre, by
which means I obtain a stronger bite or pinch; the rolls may however be
made convex on the axial lines of their peripheries, or barrel shaped if preferred.
The billet being thus forced between these rolls, all travelling in one direction,
becomes in its passage reduced in diameter and prolonged. If of iron or steel
it is then reheated; if of brass, copper, or Muntz's metal, annealed, and the
operation is repeated as often as may be necessary to reduce it to the required
size. The billet may be drawn instead of driven through the rolls if preferred
by providing suitable appliances for that purpose in the centre of the machine
at the back of the rolls. The relative positions of the rolls, and the consequent
pressure upon the tube, are controlled by the adjusting screws (L); (M) are
the standards or holsters carrying the chief parts of the machine, secured upon
the bed or main frame (N) by the holding-down bolts (O), the holsters being
steadied by the stays or distance bars (c).
.
Having thus described the nature of my said Invention, and in what
manner the same is to be performed, I wish to state that I have herein
described and exhibited, for the purpose of more clearly elucidating the opera-
tion of my own Invention, many old and well-known appliances, to which
of course I make no claim, but that which I claim is the improvements in the
manufacture of metal tubes, in producing them by pressure between rolls of
the forms I have described and illustrated, which forms of rolls I also claim
for this purpose, or any mere equivalent of such forms, as herein more fully
set forth and specified.
In witness whereof, I, the said Edward Fewtrell, have hereunto set
my hand and seal, this Eighteenth day of November, in the year
of our Lord One thousand eight hundred and sixty-two.
EDWARD FEWTRELL. (L.S.)