Improvements in Yarn Rolling and Brushing Machines.
Year: 1894

page_text: Date of Application, 7th May, 1894-Accepted, 23rd June, 1894
COMPLETE SPECIFICATION.
Improvements in Yarn Rolling and Brushing Machines.
I, HEINRICH WILHELM KNEMEYER, of Herford, in the Province of Westphalia,
Kingdom of Prussia, and Empire of Germany, Manufacturer, 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 :—
My invention relates to yarn rolling and brushing machines for rolling and
brushing starched or sized yarns in the skein so as to evenly distribute therein the
starch or size and to separate and smoothen down such of the threads or fibres as
may have become attached, and adhere, to each other, and the object of my
invention is to provide an improved construction of machine of this kind.
In most of the machines of the class heretofore generally employed the brushes
are moved so as to remain continuously in contact with the yarn, and they thus
produce a tearing and tugging effect upon the fibres of the yarn which very often
tends to impair the quality thereof, more especially in the case of cross-wound
yarns, the fibres thereby becoming torn and partly drawn out, so as to leave their
ends projecting from the body of the yarn.
With a view to avoiding the above objections the brush, in other machines of this
class, has sometimes been secured to bars which were reciprocated in a vertical,
and, at the same time, in a lateral direction by means of several sets of eccentrics
acting upon the ends of the said bars, the brush being by this means alternately
moved into contact with, and withdrawn from, the yarn. But even this arrange-
ment is not free from objection, it being rather complicated on account of the
numerous eccentrics necessitated thereby and possessing the additional disadvantage
of the brush receiving an indirect movement, instead of being directly actuated.
Moreover, there is too much friction. For these reasons it has not been found
possible in the machines as heretofore generally employed to run the brushes or the
skeins of yarn at anything beyond a very moderate rate of speed.
In order to avoid the above named objections my invention consists in a novel
construction and combination of parts, to be more fully hereinafter described and
shown, by means of which the brush has a more or less circular or circuitous direct
movement imparted to it, preferably from a single pair of eccentrics; the yarn
being thus alternately moved into contact with, and withdrawn from the yarn, and
this preferably at a speed of from 250 to 300 alternations per minute.
In the accompanying drawing
Figure 1 is a side elevation of a yarn brushing machine embodying my
improvements.
Figure 2 a front elevation thereof, and
Figure 3 is a plan view of part of the upper portion of the machine showing the
arrangement of the brush and eccentrics connected therewith.
In the frame of the machine is suitably journalled the cylinder a and to the rear
of the same, and journalled likewise in the machine frame, are the upper rocking
shaft d and the lower rocking shaft i. To the free end of an arm d' extending
outwardly from the former rocking shaft d near one of its bearings is journalled a
tension roller b, and between two similar arms i¹ of the rocking shaft is journalled a
pressing cylinder e. Inwardly extending arms d² and 2 of the rocking shafts d and i,
respectively, are connected at their rear ends by means of a link h, and the latter
is connected through another link with a foot-lever c fulcrumed in the lower
portion of the machine fraine.
In the upper portion of the machine is journalled the shaft o having the
eccentrics k surrounded by the straps l. A brush ƒ is suitably secured to the said

page_text: straps in such a manner as to have its bristles directed towards the yarn which is
laid over cylinder a and tension roller b as will be more fully hereinafter described.
Bars m rigidly attached to, or formed on, the eccentric straps are extended rear-
wardly therefrom and are loosely guided in movable collars n.
し
The operation of the machine is as follows: The starched or sized skein of yarn
having been passed over the cylinder a and tension roller b, the operator steps on
the foot lever c and thereby raises the tension roller b into the position shown in
Figures 1 and 2, thereby at the same time raising the pressing roller e and pressing
the same against the yarn on the cylinder a. As will readily appear from the
drawing, without requiring to be here particularly described in detail, the said
cylinder a is continuously rotated from the actuating mechanism of the machine
and thereby carries the yarn along with it and over the tension roller b, the latter
as well as the pressing cylinder e being rotated by friction and the said pressing
cylinder acting to distribute and to equalize the starch or size in the yarn.
While being thus carried around in the direction of the arrow 1 in Figure 1, the
yarn is intermittently brought into contact with the brush f, the latter having a
circular movement imparted to it from the shaft o and eccentrics k in the direction
of the arrow 2 in Figure 1, so as to alternately brush through the yarn and to
withdraw therefrom. The brush, in coming into contact with the yarn, acts upon
the latter with a succession of short drawing movements of great speed, so that
the yarn or fibres will not be torn or drawn out and entangled thereby.
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. A yarn brushing machine wherein the brush has a circular swinging move-
ment, towards and away from the yarn, imparted to it by being secured to
eccentric-straps 1, the latter being provided with rods m arranged to slide in
guides n, substantially as and for the purpose set forth.
2. In a yarn brushing machine the combination, with a cylinder and means for
rotating the same, of a tension roller, such as b and means for simultaneously
lifting the said tension roller away from the first named cylinder and for lifting the
said pressing cylinder towards the first named cylinder, substantially as and for the
purpose set forth.
Dated this 7th day of May 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.