Improvements in Machinery to be Employed in the Manufacture of Metallic Tubes.
Year: 1895

page_text: Date of Application, 19th Apr., 1899
Complete Specification Left, 18th Jan., 1896-Accepted, 29th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machinery to be Employed in the Manufacture of
Metallic Tubes.
We, CHARLES THOMAS BISHOP, WILLIAM PILKINGTON, ANDERSON
BROWNSWORD and ARTHUR PILKINGTON, trading as The Birmingham Climax
Steel Tube Company, Catherine Street, Aston, Birmingham, do hereby declare
the nature of our said invention to be as follows:-
Our invention relates to machinery to be employed in the manufacture of
metallic tubes, of steel iron or other metals which are capable of being
rolled hot.
We will describe our invention thus:-
:―
We take a short thick parallel tube of steel, iron, or other metal capable of
manipulation by rolling when hot.
This tube may be made by any convenient process.
We heat this tube to the
proper degree to render it plastic, and then we place it upon a cylindrical mandril.
The diameter of this mandril is such that it fits fairly the interior of the short
thick tube, and its length is several times greater than the length of the tube in its
short thick initial stage.
We pass the mandril with the heated tube thereon, through a series of pairs of
rolls, of which the axes of each pair are parallel, these rolls having grooves on
their edges like those of ordinary tube welding rolls. The direction of motion of
the tube and mandril is at right angles to the axes of the rolls. The axes of the
rolls of the second pair of the series is at right angles to those of the first pair and
so on, that is to say, supposing that the axes of the first pair of rolls are
horizontal, those of the second pair would be vertical, those of the third pair
horizontal, and so on. We use as many pairs of rolls, as we find convenient.
The edges of each pair of rolls are a little closer to each other than those of
the pair which precede them, so that in passing through the series of rolls the tube
which in its initial stage, was short and thick in proportion to its length becomes
smaller in external diameter and proportionately longer.
To loosen the tube from the mandril after rolling we pass it and the mandril
between three rolls in a direction parallel or nearly so to their axes.
To release the tube from the mandril we employ an ordinary drawbench in a
well known manner.
Our present invention consists of the combination of the series of rolls as
bereinbefore described, together with the loosening rolls, and the releasal by
means of a drawbench.
Dual 10th A 1905
THOS. KENDRICK,
3 Cherry Street, Birmingham, Agent.

page_text: Improvements in Machinery to be Employed in the Manufacture of
Metallic Tubes.
We, CHARLES THOMAS BISHOP, WILLIAM PILKINGTON, ANDERSON
BROWNSWORD and ARTHUR PILKINGTON trading as The Birmingham Climax
Steel Tube Company, Catherine Street Aston Birmingham, do hereby declare the
nature of our said invention and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
Our invention relates to machinery to be employed in the manufacture of
metallic tubes, of steel, iron, or other metals which are capable of being
rolled hot.
We will describe our invention thus:
We take a short thick parallel tube of steel, iron, or other metal capable of
manipulation by rolling when hot.
This tube may be made by any convenient process. We heat this tube to the
proper degree, to render it plastic, and then we place it upon a mandril cylindric
or otherwise. The diameter of this mandril is such that it fits fairly the interior
of the short thick tube, and its length is several times greater than the length of
the tube in its short thick initial stage.
We pass the mandrel, with the heated tube thereon, through a series of pairs of
rolls, of which the axes of each pair are parallel these rolls having grooved surfaces
like those of ordinary tube welding rolls.
The direction of motion of the tube and mandrel is at right angles, to the axes
of the rolls. The axes of the rolls of the second pair of the series, is at right
angles, to those of the first pair and so on, that is to say :-Supposing that the
axes of the first pair of rolls are horizontal, those of the second pair would be
vertical, those of the third pair horizontal and so on, we use as many pairs of rolls
as we find convenient.
The grooves of each pair of rolls are a little closer or nearer to each other than
those of the pair which precede them so that in passing through the series of rolls,
the tube which in its initial stage was short and thick in proportion to its length
becomes smaller in external diameter and proportionately. longer.
To loosen the tube from the mandrel after rolling we pass it and the mandrel
between three rolls (more or less,) in a direction parallel or nearly so to their
axes.
To release the tube from the mandrel we employ an ordinary draw-bench in a
well known manner.
Our present invention consists of the combination of the series of rolls as
herein before described together with the loosening roll and the releasal by means
of a draw-bench.
And in order that our said invention may be more clearly understood and more
easily carried into practice, we have appended hereunto a sheet of drawings upon
which we have fully illustrated our said improvements. The same letters of
reference indicating corresponding parts throughout all the figures.
Fig. 1 is a longitudinal view in section of a short thick parallel tube of steel,
iron, or other metal, placed upon the mandrel.
Fig. 2 is an end view of same.
Fig. 3 is a view of three pairs of rolls, detached shewing diminishing size of
groove in each successive pair.
Fig. 4, is a side view in elevation shewing a series of pairs of rolls set in their
bearings or housings, horizontal, and vertical.

page_text: is a pian view or same.
Fig. 6 is a view in elevation of three rolls for loosening the tube on the
mandrel.
Fig. 7, is a view in elevation, of two rolls and a bar as an equivalent for the
third roll.
a. is the short thick parallel tube of steel or other metal capable of manipulation
by rolling when hot. b, is the cylindrical or other suitably shaped mandrel, upon
which a is placed when hot or plastic as shewn in Figs. 1 and 2.
c. c. we will describe as the first pair of rolls with the grooves c¹, c¹, mounted
upon the parallel axes d, d, which run in bearings e, e, in the frame or housing f
9, 9, are the second pair of rolls with grooves g¹, g', mounted upon parallel
axis h. h. running in bearings e, e, in the frame or housing fat right angles to
the first named pair of rolls (that is to say) one pair horizontal and one pair
vertical the third pair horizontal and so on as shewn in Figs. 4 and 5.
In Fig. 3 i, i, shews the grooves of the rolls a little closer or nearer to ench
other than those which precede them.
The tube in its process of manufacture is placed at the entering end as indicated
by the arrow and the direction of motion of the said tube and mandril is at right angles
to the axis of the rolls and passing through the first pair of rolls e, c. and onward and
through the second pair of rolls g. g. in which the grooves gl glare narrower or closer
to each other and onward through the third pair of rolls in which the grooves are
narrower or closer still, by this operation the tube which in its initial stage was
short and thick by the pressure and motion of the rolls, and the diminishing of
the grooves in the rolls, becomes now elongated and smaller in external diameter.
We may use as many pairs of rolls as we find practicable and differing in their
diameter, and speed. We may leave the tube on the mandril after passing through
the rolls as above described and when cold give it another pass through the rolls to
finish,
In Fig. 6 we shew the three rolls j, j, j for loosening the tube a, from the
mandril, by passing the same in a direction parallel or nearly so to their axis.
In Fig. 7, we show 2 rolls j, j, and a bar j' as an equivalent for the third roll for
Joosening the tube a, from the mandril b, with the aid of an ordinary drawbench,
chain or windlass in a manner well known.
In either Figure 6 or 7 the rolls j bearing upon a cause a swell or loosening of a
from between the interstices, k.
The above being our said invention we wish it to be observed that we do not
limit ourselves to the precise details as shewn on the drawings, but that we
may vary or modify the same without departing from the principle of our said
invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is,-
In improvements in machinery to be employed in the manufacture of metallic
tubes,-
1. The combination of the first pair of rolls c, c, with grooves c', c', mounted
upon parallel axes d, d, the second pair of rolls g. 9. with grooves g¹, gl mounted
upon parallel axes h, k, set at right angles to the first named pair of rolls, the
third pair of rolls set as the first pair of rolls, that is alternatively one pair of
rolls set horizontal, and one pair of rolls set vertical and continuously of the
number required. Substantially for the purpose as herein before set forth and
described.
2. The combination of the rolls' c. c. g, g, and c. c. being the first, second and
third pair shewn with their grooves respectively cl cg, and c', e¹, closer or
nearer to each other as i, i, substantially for the purpose as hereinbefore set forth
and described.
3. The combination of the rolls ; i, j, or its equivalent 1, for loosening the

page_text: tube a from the mandril substantially for the purpose as hereinbefore set forth
and described.
.
4. The general construction combination and arrangement of parts as hereinbefore
described in the foregoing Specification and illustrated on the accompanying sheet
of drawings.
حيميد
г
1000
THOS. KENDRICK,
3 Cherry Street, Birmingham, Agent.