Improvements in Spreading and Stretching Machines for Jute Hemp, and Flax Spinning.
Year: 1895

page_text: Date of Application, 16th Aug., 1895-Accepted, 18th Apr., 1896
COMPLETE SPECIFICATION.
Improvements in Spreading and Stretching Machines for Jute
Hemp, and Flax Spinning.
I, JEAN MAAG, Workmaster of Fuessen in the Kingdom of Bavaria, 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:-
The spreading and stretching machines hitherto in use have the disadvantage,
that the fibres stick to the upper rollers which are mostly made of alder-wood and
that by degrees the whole stretched band whirls round the same, this easily
producing disturbances and an irregular make. Notwithstanding many trials, it
has up till now been impossible to do away with the mischief.
By the contrivance described below and illustrated by enclosed drawing, the
drawback is entirely removed and in consequence the efficiency of the machine in
question materially increased; the upper rollers are less subject to wear and tear
and the produce obtained is more even.
Figure 1 in the drawing shows a length section, Fig. 2 a top view and Fig. 3 the
middle diagonal section with support and regulation arrangement, Figs. 4 & 5
lastly, are separate parts and show the horizontal and vertical section of one of
the two eccentrics placed on a steel axle inside the cast metal case.
As shown by Figs. 1 to 3 the construction of the apparatus is as follows:
At both ends of the cylindrical part A are the cases B B for the reception of the
eccentric arrangement K, described further on. The lower part C of the apparatus,
which contains the screw-worm F, used for regulating and put in motion by a
hand-wheel D, is fastened to the screw E, Fig. 1, in such a manner as to place the
brush-ruler Q parallel to the upper roller of the stretching-machine. The fastening
on the folding table is done in such a way as to put the apparatus between the two
bands of worked material which leave the stretching-cylinder, join behind the same
and, taken up by the drawing-cylinder, are conducted into the tin receptical. In
this case the apparatus serves, in a manner, as conductor, as it frequently happens,
that the two bands join directly after leaving the stretching-cylinder thus causing
disorder. To better accomplish this purpose the lower part G is rounded off.
The cases on both sides of the casing A contain the eccentric arrangements, which
serve to give the brushes the motion desired. This mechanism is constructed as
follows: The two eccentrics H H, are fastened to the steel axle J. The driving-
shaft K made of one piece together with the excentric hoop J, has its guidance in
a metal cylinder L placed immediately in front of the eccentric, the metal cylinder
being perfectly fitted in a special case M and moving easily. Through this peculiar
guidance the brushes fastened upon the brush rulers at the ends of the driving-
shaft K are made to perform an elliptic motion. When therefore the upper roller
and the eccentrics are moving in the direction of the arrows, the whole brush
strokes down the roller, leaves the same and in rising again gets ready for another
stroke and so on, so that the motion takes the shape of a standing ellipsis, as shown
in Fig. 5. The motion of the brushes is therefore not an oscillating one as for
instance described by the carding-comb. Single fibres which chance to hang in
the brushes are thrown off at the lower part of the ellipsis and at once join the
band passing below. The most suitable number of rotations for the shaft J is
about 600 per minute, while the peripheric speed of the upper roller is 28.5 m. per
minute. As will be seen, precaution is taken, that all parts causing friction are
closed in dust-tight.

page_text: The oiling is only done at O in Fig. 1, where there is a spare place between the
two casings B B, for keeping the oil. The latter enters the eccentric cases where
it is continually being tossed about and at the same time reaches all parts in the
cylinder L subject to friction.
The apparatus moves simultaneously with the machine and is put in motion by
itself, therefore it answers the purpose best to fix on the inside of the machine a
wooden pulley to the driving pulley, the former working the apparatus by means
of a counter shaft in the ceiling or under the machine. This is also the easiest
way to obtain the number of revolutions desired.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
The arrangement of a contrivance to a spreading or stretching-machine for jute-
hemp- or flax-spinning with the object of removing the fibres of material adhering
to the upper rollers, marked by the arrangement of a brush-ruler made to perform
an elliptic motion in front of the upper roller by means of an eccentric contrivance,
the brush-ruler and the eccentric contrivance resting on a support and admitting
of being regulated ad libitum.
Dated this 12th day of August 1895.