Improvements in or relating to the Drawing Rollers of Spinning and like Machines.
Year: 1898

page_text: Date of Application, 17th Nov., 1893 -Accepted, 22nd July, 1899
COMPLETE SPECIFICATION.
Improvements in or relating to the Drawing Rollers of Spinning and
like Machines.
I, THEODOR WESSEL, of Neustadterfeld, 2, Langensalza, in Thuringia, Germany,
Managing Director, 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:
-
This invention relates to the use of woven fabric impregnated with rubber as
an under lining or surface lining for the pressure rollers of drawing rollers
both for preliminary and fine spinning. A knitted fabric (tricot) impregnated
with rubber, or porous paper or pulp impregnated with rubber may, however,
be also used. Or a lining of fine steel wire gauze coated or covered with rubber
may be employed. The impregnation is to be such that no liquid substances
can penetrate into the fabric.
Hitherto felt has been used as an under lining. But the improved material
has the following advantages over it.
The fibres of the fabric used are connected together by the water-proof im-
pregnation in such manner that they form a mass and cannot, be separated out
as in the case of felt. The impregnation, moreover, prevents the material used
for securing the lining to the rollers, as well as for securing the top covering
(say, parchment paper) from pressing into the lining and depriving it of elasticity.
The parchment paper which generally constitutes the upper covering of the
rollers may be easily replaced by new paper, when worn out, without damaging
the under lining, by wetting with water those portions of the used covering
which do not come off easily. This does not damage the under-lining as it is proof
against dampness, owing to its impregnation with rubber. When using felt cloth,
however, no damping may take place, as the cloth takes up liquid and bubbles
or swellings are produced. The upper covering must therefore be scraped off,
whereby the under lining is easily damaged.
Compared with an upper covering of cloth, or lining, coated on one side with
rubber, which has not proved satisfactory in practice the lining according to
As regards
this invention has the advantages of the former without its drawbacks.
the rubber coated side, the coating is softened by pressure, and stretches, but
as its lower surface is connected to the cloth and cannot participate in the
stretching, there are formed at the top creases which render the roller useless.
In this invention the rubber cannot stretch as it is completely imprisoned by
the fabric, and the lining therefore remains perfectly smooth.
The new lining is generally made of a thin linen fabric woven in the ordinary
manner and completely impregnated with vulcanised rubber.
The manner of use is the same as in case of ordinary felt cloth, and differs
only in that the felt cloth is used in one layer, while the thin fabric according to
this invention enables the lining to be wound in two or more layers round the
roller without interfering with the smoothness of the pressure-surface. It is

page_text: therefore possible to obtain any desired degree of elasticity. The several layers
may be connected together by cement, glue or a solution of rubber.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
Drawing rollers for spinning and like machines in which the usual layer of
cloth under the upper covering is replaced by one or more layers of a porous
material such as a woven or knitted fabric or paper or pulp, impregnated with
rubber, or wire fabric to which rubber has been applied, for the purpose of obtain-
ing a uniform and lasting elasticity.
Dated this 17th day of Novamba» 1908