Improvements in the Method of and Apparatus for the Manufacture of Cop Tubes for Weavers and Dyers.
Year: 1894

page_text: Date of Application, 17th Feb., 1894-Accepted, 2nd June, 1894
Improvements in the Method of and Apparatus for the Manufacture
of Cop Tubes for Weavers and Dyers.
A communication from ALBERT SCHMIDT, of 138, Friedrichstrasse, Berlin, in the
Empire of Germany, Engineer.
I WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street,
Manchester, both in the County of Lancaster, and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The present invention has for its object a method, and an appliance for the
production of conical seamless tubes for weavers, and dyers, such as are used in
dyeing, weaving, etc.
These kinds of tubes have hitherto been produced by a piece of sheet metal being
bent round the tube, and then soldered. Tubes so made have the great objection
that after continued use the joint or seam becomes more or less opened and its
sharp edges very easily injure the yarn, besides in such case the tube becomes very
easily bent resulting in an uneven cop.
Further the exterior of tubes for dyers, and spinners have hitherto had ringed
grooves for the object of increasing friction between the tube, and cop, when,
however, a very fine yarn gets on such a tube difficulties arise in drawing it off
since little lumps form in the inner layers of the cop, and in most cases it is almost
impossible for the cop to leave the tube evenly. The present invention is intended
to remove all these objections.
The manufacture of conical tubes for dyers and spinners is so carried out that a
seamless, cylindrical metal tube, produced in any known manner is placed on
a mandrel but its revolution thereon is prevented by any suitable means, the
mandrel with its tube is then continuously turned in an axial direction in a press
having one or more divisions the conical shape of which must correspond to the
tube to be produced.
The separate parts of the press move to and fro in a radial direction so that the
individual parts of the mould act partly as a hammer, and partly as a press.
During the axial forward movement of the mandrel an ascensional movement of the
same is also provided whereby the upper surface of the tube to be produced
is always an absolutely symetrical one. As however the mandrel, as well as the
press, corresponds exactly to the tube to be produced the thickness of the wall is
consequently a symetrical one, and the shape of the tube is perfectly conical. The
requisite friction of tube and cop is not obtained in this tube by means of ring
shaped grooves, but by a number of spiral ones, the depth of which at the upper
part of the tube is smaller than at the lower part.
•
These spiral grooves are made by the tube being placed on a mandrel and set in.
rotation, a semicircular pointed tool being pressed against the tube and moved along.
as in turning.
"The manufacture of a tube according to the foregoing method will be effected in
the usual manner, the edge of the lower part being bent round and provided with a
dise whilst the tube itself is perforated.
The perforating is effected by means of a borer or stamp.

page_text: The advantages of a tube made according to the foregoing method can be very
briefly summed up, and are as follows-
A. The tube is without any joint, consequently there are no sharp edges after
continued use which injure the cop, nor is the tube likely to become bent.owing to
a joint or seam opening. .
B. The withdrawal of the cop off the tube takes place without the cop being in
any way disturbed, whilst the tube owing to its screw shape is drawn forth out of
the latter.
the
For carrying out this method of manufacture an appliance which is shown on
accompanying sheet of drawings is necessary.
Fig. 1 is a longitudinal view of the appliance,
Fig. 2 is a section on a-y of Fig. 1,
Fig. 3 is a front view of the bearing for the screw spindle,
Fig. 4 shows a tube constructed on the above principle,
Fig. 5 shows a varied form in which the appliance may be made.
The following will explain how this appliance is constructed.
An
In the lower part g. of a fixed framework there is firmly seated one part 1 of
the press by means of screws k z. and cheeks i, whilst in the upper part n of the
same a second part of the press is fastened, by means of screws i, in a press
head m, and is capable of normal adjustment as regards the axis of the press.
arm G is cast on the lower part of the frame which carries the bearing dc for the
screw spindle b. This bearing is formed out of two parts, the upper part d being
movably arranged on the lower part c by means of a hinge d'. The outer end of
the screw spindle b is provided with a crank handle a, whilst the inner end is
formed as a conical mandrel e. Spring jaws fare applied to the latter which
prevent the tube / turning on the mandrel e. In the appliance shown in Fig. 5, the
construction differs from that shown in Figs. 1, and 2 only in arrangement of
the press heads, and in the press being formed in more parts. The fixed part 1 of
the press
is seated in a jaw m', which again is fastened in the under framework g.
by means of screws z, k, and cheeks i. The other parts
to be a three part press, are fastened radially to the axis in
which in this case also are seated in the upper framework.
appliance works is as follows.
of the
press, supposed
adjustable press heads,
The way the foregoing
a,
and
A piece of cylindrical metallic tube h sufficiently long, and without any joint is
pushed between the spring jaws f, and the spindle b is then brought in its bearing de
into the position shown in Fig. 1. If now the adjustable parts of the press be set
into a to and fro radial motion by means of any suitable eccentric or crank
mechanism, and the spindle b be approached to the press by means of handle
be introduced therein, there will result a gradual pressing together, and stretching
of the tube h. With the axial forward movement of the tube h there is also
simultaneously, as will be seen, a turning motion, so that the even formation of
the tube mantle is secured. The deeper the tube penetrates into the conical cavity
of the press, the smaller will be the upper circumference of the tube part, and the
coniety of the same corresponds exactly to that of the mandrel e, and to the cross
section of the press tools. When the tube has received the desired form, the
bearing d e is then opened, the spindle 6 withdrawn therefrom, the tube h taken
from off the mandrel e and a new seamless tube inserted thercon to be subjected to
the same treatment.
The press can be separated up into any desired number of parts and be operated
by any suitable eccentric or crank mechanism, but the separate parts must always
be moved to and fro radially and normally to the direction of the axis in order to
secure a perfect and evenly shaped tube.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
First. A method of producing seamless conical tubes for weavers and dyers,

page_text: characterized by a seamless cylindrical tube being placed on a mandrel and led
continuously, whilst slowly revolving, to a conical press, divided into parts, in such
manner that by means of the parts of the press moving to and fro quickly in a
radial direction, the cylindrical tube is formed conically, and further by the
periphery of the tube being formed with a number of screw shaped channels or
grooves.
Second. An appliance or apparatus for carrying out the method specified in
Claim 1, characterized by the arrangement of a press (in several parts) with a
conical cavity, and with a screw spindle provided with spring jaws, and with a
mandrel corresponding to the conical cavity, so that the tube will be formed
conically by the quick to and fro motion of the parts of the press.
All substantially as hereinbefore described and shown on the accompanying sheet
of drawings.
W. P. THOMPSON & Co.