Improvement in the Rollers of Calenders and Analogous Smoothing or Embossing Machines for Fabrics or Paper.
Year: 1899

page_text: Improvement in the Rollers of Calenders and Analogous Smoothing or
Embossing Machines for Fabrics or Paper.
I, LORENZ ECK, Manufacturer, of Gartenstrasse 15, Düsseldorf, Germany, do
hereby declare the nature of this invention to be as follows:
It is well-known, that each pair of calender rollers consists of a hard roller
and an elastic roller adapted to follow the inequalities of surface of the hard
roller.
The elastic rollers have usually a mantle of paper or cotton fabric, which
materials are not suitable to resist the heat produced by the mechanical pressure
between the rollers, or by the steam or other medium with which the hard roller
is heated from inside.
To avoid this drawback, I cover the elastic roller with asbestos fabric, instead
of cotton fabric or ordinary paper, and fix the asbestos mantle upon its base by
any convenient means.
Asbestos fabric may for instance be mounted on an axle, and compressed at
the ends by a pair of discs mounted on the same, as in the case of paper rollers.
Such rollers may be used for smoothing, polishing, or embossing woven fabrics
or paper.
1000
FAIRFAX & WETTER,
Agents for the Applicant.
Improvement in the Rollers of Calenders and Analogous Smoothing or
Embossing Machines for Fabrics or Paper.
I, LORENZ Eck, Manufacturer, of Gartenstrasse 15, Düsseldorf, Germany, 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:
In smoothing glossing or embossing calenders elastic rollers are generally
made to work together with hard rollers, because two hard rollers could not be
made with sufficient accuracy to produce a uniform effect.
Hitherto the desired elasticity of the roller surface has been obtained by
providing the roller with a jacket of paper, cotton, cocoa nut fibre, wood wool or
similar materials. Such rollers are used in the manufacture of paper and
textile fabrics, for smoothing, glossing, also in embossing machines or goffering
calenders, for embossing patterns on paper and woven fabrics.

page_text: .
As the metal rollers used in conjunction with the elastic rollers are in most
cases intensely heated, and heat is produced also by the great pressure under
which the calenders are working, roller jackets made of paper, cotton fabric or
other vegetable fibre are subject to deterioration, which not only affects the
durability of the rollers, but also the quality of the work produced by the same.
To avoid this drawback, I make the elastic jacket of asbestos or asbestos
fabric, instead of cotton fabric or ordinary paper. Owing to the elasticity of
the asbestos fibre, roller jackets made from it adapt themselves to the surface of
the metal rollers with the same facility and accuracy as rollers of paper, cotton
or other vegetable fibre.
The means for mounting the asbestos or asbestos fabric on the roller core and
for securing it on the same may be similar to those usually employed for the
elastic jackets, after the circular discs of asbestos or asbestos fabric to be mounted
on the core have been provided with a recess corresponding to the sectional area
of the core.
It should be remembered, however, that owing to the smoothness
of the mass made from asbestos or asbestos fabric, it possesses very little adhesive
property, so that the jacket will easily slip on the core, unless special pre-
cautions are taken to prevent such an occurrence. A simple but effective means
for the prevention of slipping consists in providing the surface of the roller core
with grooves or ribs running parallel to the roller axis.
The manufacture of such rollers is therefore preferably as follows:-
On a roller core having in its surface grooves parallel to the roller axis are
placed a number of circular discs which consist of asbestos or asbestos fabric and
are stamped out in accordance with the sectional area of the core, subsequently
the discs are strongly compressed between two end discs and finally turned or
ground smooth.
In the accompanying drawings, Fig. 1 is a side view and Fig. 2 a cross section
of an elastic calender embodying my invention.
a indicates the jacket, b the axle or core of the roller and c the end discs or
face plates.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. An elastic calender roller for smoothing glossing or embossing purposes,
consisting of a core or axle surrounded with a jacket of asbestos or asbestos fibre,
substantially as described.
2. In an elastic calender roller for smoothing, glossing or embossing fabrics
or paper, the combination of a superficially grooved or ribbed core or axle with
a jacket of asbestos or asbestos fabric, substantially as and for the purpose
described.
FAIRFAX & WETTER,
Agents, 37 and 39, Essex Street, Strand, London.