IMPROVEMENTS IN PRESSING ROLLERS OR CYLINDERS USED IN SPINNING MACHINES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I ALBERT FERDINAND LINK of 6 Union Court Chambers, Old Broad Street
in the City of London Merchant, do hereby declare the nature of my Invention
for "IMPROVEMENTS IN PRESSING ROLLERS OR CYLINDERS USED IN SPINNING
MACHINES," to be as follows:―
This invention relates to the pressing cylinders used in cotton, wool, silk, linen,
hemp, juté and similar spinning mills for the preparing machine and for fine
spinning machines.
It is well known that the coating of pressing rollers as hitherto made of cloth
readily become impaired by the fibre and the threads passing through it, and by
the oil used in lubricating, the roller expanding or spreading to the coating owing
to carelessness of the workmen.
The object of the present invention is to remedy these disadvantages by the use
of a new description of coating.
In carrying out this invention I make the coating of a more or less vulcanized,
and eventually varnished hollow cylinder of caoutchouc, which is covered with
leather varnished on the inside i.e, on the flesh side of the leather.
The varnish which covers the flesh side of the leather prevents the impression
usually produced by the passage of the thread, without affecting the suppleness of
the leather; it insulates the leather from the caoutchouc and thereby obviates an
otherwise possible transmission of humidity from the caoutchouc to the leather, and
the above mentioned spreading of the lubricating oil.
After placing the caoutchouc hollow cylinder on the pressing roller, the exterior
ends thereof are varnished as well as adjoining parts of the roller, so that the oil
cannot penetrate the coating of the roller through these ends; and upon this the
leather cover, as above described, is placed.
The pressing rollers or cylinders may first be coated with half elastic caoutchouc
on which then a second layer of especial quality is brought which has a glassy
smoothness and is very light and does not harden.

page_text: Should cloth or stuff be used for the lower layer of the coating this lower layer
can be varnished with dissolved caoutchouc or elastic varnish, which then forms a
very advantageous layer between the cloth and the leather for covering the former;
because the disadvantage of the cloth covers hitherto used consists in the cloth
losing the necessary elasticity for quick spinning and even when the best cloth is
used for the purpose, an absorbing or sinking of the fibres or threads takes place,
which sinking is transferred to the leather cover. The layer placed on the cloths
renders this more elastic and durable, and prevents oil from percolating to the
outside, which would cause depressions or hollows in the passage of the fibres and
threads,

page_text: .COMPLETE SPECIFICATION.
I ALBERT FERDINAND LINK of 8 Union Court, Old Broad Street in the City
of London, Merchant do hereby declare the nature of my Invention for IMPROVE-
MENTS IN PRESSING ROLLERS OR CYLINDERS USED IN SPINNING MACHINES,
a communication from Paul Rochatte of La Petite-Raon-Vosges, France; and
Charles Bauer, Pore, of Sulz, Upper Alsatia, 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 pressing cylinders used in cotton, wool, silk, linen,
hemp, jute, and similar spinning mills for the preparing machine and for fine
spinning machines.
It is well known that the coating of pressing rollers as hitherto made of cloth
readily becomes impaired by the fibre and the threads passing through it, and by
the oil used in lubricating the roller expanding or spreading to the coating owing
to carelessness of the workmen.
The object of the present invention is to remedy these disadvantages by the use
of a new description of coating.
In carrying out this invention I make the coating of a more or less vulcanized,
and eventually varnished, hollow cylinder of caoutchouc which is covered with
leather varnished on the inside, that is to say, on the flesh side of the leather.
The varnish which covers the flesh side of the leather prevents the impression
usually produced by the passage of the thread, without affecting the suppleness of
the leather; it insulates the leather from the caoutchouc and thereby obviates an
otherwise possible transmission of humidity from the caoutchouc to the leather, and
the above mentioned spreading of the lubricating oil.
After placing the caoutchouc hollow cylinder on the pressing roller the exterior
ends thereof are varnished as well as adjoining parts of the roller so that the oil
cannot penetrate the coating of the roller through these ends, and upon this, the
leather cover, as above described is placed.
The pressing rollers or cylinders may first be coated with semi elastic caoutchouc
upon which a second red layer of suitable quality is applied, which has a glassy
Bimoothness and is very light, and does not harden.
Should cloth or stuff be used for the lower layer of the coating, this lower layer
can be varnished with dissolved caoutchouc or elastic varnish, which then forms a
very advantageous layer between the cloth and the leather for covering the
foriner, because the disadvantage of the cloth covers hitherto used consists in the
cloth losing the necessary elasticity for quick spinning; and even when the best
cloth is used for the purpose an absorbing or sinking of the fibres or threads takes
place which sinking is transferred to the leather cover. The layer placed on the
cloth renders this more elastic and durable, and prevents oil from percolating to
the outside, which would cause depressions or hollows in the passage of the fibres
and threads.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. The manufacture and use of pressing rollers for the purposes aforesaid, having
a coating of caoutchouc, in a more or less vulcanized state, with a leather outer
coating which is varnished on the inside (that is to say on the flesh side) of the
leather substantially as hereinbefore described.
2. The application to pressing rollers for the purposes aforesaid of a layer of
semi-elastic caoutchouc, coated with a thin, smooth and moderately soft layer of red
caoutchouc, substantially as hereinbefore described:
3. The application to pressing rollers for the purposes aforesaid, of a layer of stuff,
or cloth covered with dissolved caoutchouc, or elastio varnish, and an external
covering of leather substantially as hereinbefore described.