Improvements in Coverings or Facings for Spinning Machine Rolls.
Year: 1895

page_text: Date of Application, 30th Oct., 1895-Accepted, 30th Nov., 1895.
COMPLETE SPECIFICATION.
Improvements in Coverings or Facings for Spinning Machine
Rolls.
We, FRANCISCO IZARD and DOMINGO BALLBE both of Tarrasa, Barcelona,
Spain, Manufacturers, 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 rolls of machines for spinning cotton as well as those for spinning wool are
of steel covered with a band of felt, rolled spirally and glued on the rolls by means
of mastic or glue. But the lubrication of the bearings of the trunnions being
generally done with oil, in order that they turn more freely, and the oil injuring
the mastic or glue which serves the cover on the rolls, it happens that after a
certain time the covering gets loose from the roll and causes damage to the thread
or yarn necessitating tedious and expensive repair.
These inconveniences are avoided by using the new industrial product, which is
the object of this invention. This new product consists in a tube of wool woven
in one piece without longitudinal seam and felted until its interior diameter is a
little smaller than the diameter of the roll to be covered.
In order to put it thereon the tube is first cut into lengths, and these lengths
are wetted and widened until their interior diameter becomes a little larger than
the diameter of the roll; the roll is then introduced and the tube is dried. When
dried the tube will have shrunk to its former dimensions, the fibres recover their
elasticity and the tube holds firmly on the roll.
For manufacturing these tubes we employ both for the weft and for the warp,
.threads of wool of size and sort, convenient for the conditions to be given to the
tube. The weaving of this tube is done on a loom of any system but the warp is
disposed in such a way as to form two half-gangs, which are rolled on one or on
two rollers or weavers' beams as occasion may require.
These two half gangs are independent of each other in order to form a shed for
passage of the shuttle in each of them, and each half gang is connected with the
heddles necessary for weaving with suitable cording in such a way as to produce
two fabrics being respectively the one and the other side of a flattened tube.
The shuttle passes first through the warp of one half gang and on its return
traverses the warp of the other half gang; the weft thread thus makes continuous
turn of the warps thus forming tube.
On leaving the loom the tube is submitted to felting for it is woven of a much
larger diameter than it will finally have. By felting, the diameter is reduced until
it has a little smaller size than the diameter of the roll, and the manufacturing of
the tube is finished.
The machines for felting these tubes are the same as employed in the wool
industry. They differ only in their dimensions for the breadth of the tube is very
small and requires in consequence only a small sized machine.
These tubes form a new industrial product though manufactured by means
already known.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
A woollen tube woven without longitudinal seam for covering the rolls of

page_text: spinning-machines this tube being woven of a larger diameter than that which it
will finally have; and felted until its diameter is a little smaller than that of the
roll to be covered, so that on wetting it, it is enlarged to introduce the roll and on
drying, contracts firmly upon the roll for the purpose set forth.
Dated this 30th day of October 1895.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C., Agents to Applicants.