Improvements in Spinning Machines.
Year: 1892

page_text: Date of Application, 22nd Aug., 1892
Complete Specification Left, 19th May, 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Spinning Machines.
I, GUSTAV ADOLF HEMPEL, Manufacturer, of Klosterstrasse, Chemnitz, in the
Kingdom of Saxony do hereby declare the nature of this invention to be as
follows:-
In the manufacture of certain kinds of yarns it is necessary, to impart to the
thread at will either a right hand or a left hand twist; for instance, in order to
produce fine yarn from inferior raw material, the yarn is sometimes spun to the
right and then to the left, or vice-versa.
This object may be attained by using a spinning machine for right hand spinning
and another for left hand spinning, which is sometimes done where the product
need not be perfectly uniform. In other cases, however, each individual string
driving the spindles is reversed, so that, while the driving shaft for the spindles
continues to turn in the same direction, the direction in which the spindles revolve
is reversed. This changing of the strings takes much time and frequently causes
the strings to break or to vary their tension.
The same object may be attained by means of reversing gear at the ends of the
spindle driving shaft, but owing to the high speed, such toothgear is apt to produce
a deafening noise.
The present invention has for its object, to produce the right and left turning of
the spindles by means of a specially guided driving rope.
On the main driving shaft carrying the drums which set in motion the spindles,
is mounted a tube or hollow shaft, which carries a rope pulley and the principal
driving mechanisms, such as the quadrant coupling, and which may be connected
with the main shaft by means of a movable coupling.
By the in-motion of the carriage (when the latter moves towards the centre), the
drum, which is mounted on the carriage and connected with the quadrant by a
chain, is caused to turn on its axis, which motion is communicated to the hollow
shaft, mentioned above, by a pair of spur wheels. From the double rope pulley or
whorl mounted on said shaft (as mentioned above) a rope passes over a double guide
pulley and then back to another (double) whorl which is coaxial and in close
proximity to the same. The rope coming from the second whorl passes underneath
a jockey roller, which may be placed higher or lower in order to vary the grip of
the rope on the second whorl, and thereby to obtain exactly the same number of
revolutions in right hand and left hand spinning.
The first and the second whorl have equal diameters and speeds, but turn in
opposite directions. According as the first or the second whorl is connected with
the main driving shaft or drum shaft by means of the movable coupling, (preferably
situated in the interior of the second whorl), the spindles will turn to the right or
to the left.
The movable coupling sleeve is mounted on the main driving shaft by means of a
groove and feather and may be fixed in the desired position by means of a set
screw.
Dated this 22nd day of August. 1892
FAIRFAX & WETTER,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Spinning Machines.
I, GUSTAV ADOLF HEMPEL, Manufacturer, of äussere Klosterstrasse, Chemnitz,
in the Kingdom of Saxony, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:--
In the manufacture of certain kinds of yarns it is necessary, to impart to the
thread at will either a right hand or a left hand twist; for instance, in order to
produce fine yarn from inferior raw material, the yarn is sometimes spun to the
right and then to the left, or vice versa.
This object may be attained by using a spinning machine for right hand spinning
and another for left hand spinning, which is sometimes done where the product
need not be perfectly uniform; in other cases, however, each individual string
driving the spindles is reversed, so that, while the driving shaft for the spindles
continues to turn in the same direction, the direction in which the spindles revolve
is reversed. This changing of the strings takes much time and frequently causes
the strings to break or to vary their tension.
The same object may be attained by means of reversing gear at the ends of the
spindle driving shaft; but owing to the high speed, such toothgear is apt to produce
a deafening noise.
The present invention has for its object, to produce the right and left turning of
the spindles by means of a specially guided driving rope.
In the accompanying drawings,
Fig 1 is an elevation and Fig. 2 a plan of the driving mechanism of a spinning
machine of the mule type embodying my invention.
Fig. 3 is an axial section through the driving shaft on a larger scale.
On the main driving shaft d carrying the drums which set in motion the spindles,
is mounted a tube or hollow shaft a, which carries a rope pulley 7 and the principal
driving mechanisms such as the quadrant coupling e, and which may be connected
with the main shaft d and by means of a movable coupling fand the rope
pulley 7.
By the in-motion of the carriage w (when the latter moves towards the centre)
the drum t, which is mounted on the carriage and connected with the quadrant o by
a chain k, is caused to turn on its axis, which motion is communicated to the hollow
shaft a, by a pair of spur wheels From the double rope pulley or whorl 7
mounted on said shaft (as mentioned above) a rope passes over a double guide
pulley 6 and then back to another whorl 5 which is coaxial and in close proximity
to the whorl 7. The rope coming from the whorl 5 passes under a jockey roller 4,
which may be placed higher or lower, in order to vary the grip of the rope on the
whorl 5, and thereby to obtain exactly the same number of revolutions in right
hand and left hand spinning.
The whorls 5 and 7 have equal diameters and speeds, but turn in opposite
directions, as shown in Fig. 1 by arrows. According as the first or the second
whorl is connected with the main driving shaft or drum shaft d, by means of
moveable coupling f, preferably situated in the interior of the whorl 5, the spindles
will turn to the right or to the left.
The moveable coupling sleeve fis mounted on the main driving shaft d by means
of a groove and feather, and may be fixed in the desired position by means of a set
screw, as indicated by the drawing Fig. 3.
Consequently, for reversing the motion, it is only necessary, to loosen the said
set screw or coupling screw, to shift the coupling into the required position and to
tighten the screws again.
1, 2, 21, 3, 8 and 9 are rope pulleys, over which passes the driving rope in the
direction of the arrows, and which do not require any further explanation.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In spinning machines of the mule type, an appliance for reversing the direction
in which the spindles turn (from right to left and vice versa), comprising a pair of
whorls 5 and 7 mounted on the drum shaft and adapted to be coupled with the same
alternately, a driving rope passing over the said whorls so as to turn them at the
same speed in opposite directions, and a moveable guide roller 4 adapted to vary
the grip of the rope on the said whorls, substantially as described.
Dated this 18th dox of Mo 1802
G. A. HEMPEL,
By Fairfax & Wetter,
433, Strand, London, Agents