IMPROVEMENTS IN THE MANU- FACTURE OF TUBES, AND IN MACHINERY OR APPLIANCES CONNECTED THERE- WITH PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to George Little of Oldham in the County of Lancaster,
Mechanical Engineer, for an. Invention of "IMPROVEMENTS IN THE MANU-
FACTURE OF TUBES, AND IN MACHINERY OR APPLIANCES CONNECTED THERE-
WITH
PROVISIONAL SPECIFICATION left by the said George Little at the Office
of the Commissioners of Patents on the 1st November 1882.
GEORGE LITTLE of Oldham in the County of Lancaster, Mechanical Engineer,
" IMPROVEMENTS IN THE MANUFACTURE OF TUBES, AND IN MACHINERY OR
APPLIANCES CONNECTED THEREWITH,"
In existing machines for the manufacture of tubes the metal in issuing from the
furnace passes onto the mandril between rolls and the tube is welded, but the
finish of the tube is generally imperfect.
Now according to my Invention, I proceed mainly as follows:-
The tube after passing through the first pair of rolls is caused to pass between
a second pair placed at an angle to the first pair said second pair being driven in
circumference speed to the first pair.
Or more than two pairs of, rolls may be used, same being at suitable angle and
distance, and driven by suitable gear. Another portion of my Invention consists
in the mandril. The centre bar or mandril carries the die, which gives the size of
the internal diameter of tube.-On the same mandril or centre bar, another die or
series of dies is placed, over which the tube passes, being pressed or squeezed by
the additional rolls, as before described-When the tubes are of larger size, I
prefer to insert over the centre bar or mandril a tube between each pair of dies,
to give better support to same, and prevent canting of the dies.-A further
feature of my Invention consists in cleaning the tube before it passes to the die,
and also arrangements for clearing the grooves of the rolls of slag, grit, or dirt.
This is effected by a whisk or circular brush of steel wire or suitable material,
which is caused, to revolve by suitable means, so that as the tube issues from the
furnace, the metal is cleaned of slag or grit before passing to the dies The
rollers are also cleared of grit or slag that may accumulate in the grooves by like
whisk or brush driven by suitable means.-For finishing the tubes, emery wheels
or bands may be applied.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Little in the Great Seal Patent Office on the 1st May
1883.
GEORGE LITTLE of Oldham in the County of Lancaster Mechanical Engineer,
" IMPROVEMENTS IN THE MANUFACTURE OF TUBES AND IN MACHINERY OR
APPLIANCES CONNECTED THEREWITH."
In existing machines for the manufacture of tubes, the metal in issuing from
the furnace, passes on to the mandril between rolls and the tube is welded, but
the finish of the tube is generally imperfect.
Now according to my Invention, I proceed substantially as follows:-
The tube, after passing through the first pair of rolls, is caused to pass between
a second pair placed at an angle to the first pair, said second-pair being driven in
circumference speed to the first pair. Or more than two pairs of rolls may be
used, same being at suitable angle and distance, and driven by suitable gear.
Another portion of my Invention consists in the mandril.
The centre bar or mandril carries the die, which gives the size of the internal
diametor of tube-On the same mandril or centre bar, another dio or series of
dies is placed, over which the tube. passes, being pressed or squeezed by the
additional rolls as before described.
When the tabes are of larger size, I prefer to insert over the centre bar or
mandril a tube between each pair of dies, to give better support to same and
prevent canting of the dies.
A further feature of my Invention consists in cleaning the tube before it passes
-to-the-die, and also arrangements for clearing the grooves of the rolls of slag, grit,
or dirt. This is effected by a whisk or circular brush-of-steel-wire,-or-suitable
material, which is caused to revolve, so that as the tube issues from tho furnace,
the metal is cleaned of slag or grit before passing to the dies.-The rollers are
also cleared of grit or slag that may accumulate in the grooves by like whisk or
brush driven by suitable means. For finishing the tubes, emery wheels or bands
may be applied.
In order that my Invention may be clearly understood, I now proceed by
reference to the accompanying Drawings, to further describe and ascertain in what
manner the same is to be performed or put in practice.

page_text: The die E is carried by mandril D and another die F (or a series of dies) may
be employed over which the tube A passes.
The grooves of the rollers are cleared of grit or dirt by the use of a wisk or
brush shown in Fig. 5 same being arranged and secured as represented in sectional
views Figs 6. 7 and 8.
Having now particularly described and ascertained the nature of my said
Invention and in what manner tho same is to be performed or put in practice I
hereby declare that I claim the said Invention of Improvements in the manu-
facture of tubes and in machinery or appliances connected therewith, substantially
as hereinbefore set forth and described and illustrated by the accompanying
Drawings.
In Witness whereof I the said George Little have hereunto set my hand
and seal this Thirtieth day of April in the year of our Lord one thousand
eight hundred and eighty three.