other Machinery.
Year: 1886

page_text: other Machinery.
I SAMUEL BERGSTRESSER of No. 2513 North College Avenue in the City of
Philadelphia, State of Pennsylvania, United States of America, Manufacturer of
Roll Coverings 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 and accompanying drawings :-
:-
As
My Invention relates principally to the top rollers or drawing rollers used in
machinery for preparing and spinning cotton and other textile materials.
ordinarily constructed such rollers are made of metal and are covered with leather.
The object of my invention is to produce a roller which shall be more effective
than the leather covered rollers.
Previously to my Invention attempts have been made to overcome the objections
to leather or to obtain a cheaper covering by using as substitutes therefor tubes of
textile material coated or covered with paint or varnish compounds hut to the best
of my knowledge none of these attempts have been successful and leather may be
said to be universally employed for the purpose.
One reason why substitutes for leather are not adopted is that they are not of
such a nature as to warrant the dispensing with a backing or wrapping of felt or
cloth between the body or core of the roller and the outer covering fabric and are
thus not so advantageous on the score of economy as to compete successfully with
leather.
Another objection to such substitutes is that they generally lack the strength of
leather so that while they may present a surface as good as or even better than
leather as regards the tendency to resist ordinary wear they are more liable to bo
injured by handling or "knocking about."
In carrying out my invention with the view of overcoming these objections,
I first make a tubular fabric of woollen yarn or of other yarn capable of being
fulled. This fabric may be comparatively loose and open and is by preference
produced by means of a knitting machine.
I make such textile tube considerably larger in diameter than the roller to be
covered and I then subject the tube to a fulling operation whereby its diameter is
decreased to the desired extent and the texture of the fabric is at the same time
rendered suitably thick and close.

page_text: I then apply to the tube of textile fabric so produced a coating consisting of a
succession of applications of a paint or filling compound of a pasty or suitable
consistency each layer being dried to a suitable degree before the application of
the next.
The number of layers and the character of the compound may be varied without
departing from the main feature of my invention, but I prefer to use a compound
of lampblack and linseed oil and to apply sufficient of the same to produce an
uniform homogeneous coating.
If considered to be desirable the surface of the coating may be smoothed by sand
papering or buffing but this is not essential:
In the accompanying drawings Fig. 1 is a perspective view of a roller constructed
in accordance with my invention portions of the covering being removed; Fig. 2 is
an elevation of Fig. 1; and Fig. 3 is a transverse section on an enlarged scale.
In the said Figs. A represents the body of the roller B the knitted and fulled
textile tube and D. the coating of paint or filling compound.
A covering prepared in accordance with my invention as herein before described
can be applied directly to the body or core A of the roller, the fulled tube B taking
the place of the usual felt or cloth covering so that as regards the cost of my
improved roller covering as compared with that of leather I have only the cost of
the paint or filling compound D. to set against the cost of the leather and con-
sequently my improved covering is less expensive and at the same time the
coating D. is more durable and wear-resisting than leather. If preferred however
my improved covering may be supplemented by the ordinary roller cloth applied
in the same manner as when leather is used.
A tubular covering prepared in accordance with my invention also possesses a
certain amount of elasticity so that it can be forced over a roller and be made to
fit closely thereon an advantage not possessed by coverings made of cotton or
like in elastic material. If preferred the coating D. might be applied after the
application of the covering B to the roller.
Rollers covered in accordance with my invention may be used for other than
textile machinery although specially adapted for the latter.
If desired the tube may in the first instance be made of a suitable diameter
for the roller using a woollen warp and cotton weft the tube so produced being
subjected to the fulling operation which acts upon the woollen threads to effect the
desired thickening and closing of the texture of the tube.
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 within described covering for top rollers and other rollers used in
machinery such covering consisting of a fulled tubular fabric having a paint or
filling compound or coating applied to the outer surface as set forth.
2. A feed roller or drawing roller for machinery having applied to the core
or body of the same a covering consisting of a fulled tubular fabric with a paint
or fulling composition on the outer surface as set forth.