Year: 1888

page_text: I, FRIEDRICH MORITZ FRANKE, of Chemnitz, Germany, Engineer, do hereby
declare the nature of my said invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
In machines of the ring spinning type and in twisting frames the arrangement or
device for conducting the thread, as hitherto constructed, was fixed and stationary,
and on each lift of the ring the distance A between the thread conductor and the
ring was diminished in the weak part of the cop and a further diminution took place
in consequence of the constant inclination of the ring rail with the increase of the
length of the cop.
In another arrangement of this type of machine the thread conductor followed the
motion of the ring rail, in which case the distance & then always remained the same.
The great distance when remaining the same, produced then, with a stronger cop
support such a large thread ball that the well known anti-ballooning arrangements
became necessary. This new arrangement is founded on the fact, that
(1) the thread tension becomes smaller as the angle-alpha-becomes more obtuse,
such angle being formed by the thread between the thread conductor, the ring
traveller and the spindle (Figure 1. Sheet 1); but this angle increases more
particularly as the more acute the angle-alpha- becomes (Figure 2, Sheet 1).
(2) the thread tension is smaller as the diameter of the cop becomes larger, or, in
other words, the nearer the peripheral surface of the cop is to the ring traveller &, but
increases largely with the diminution of the cop diameter.
In accordance with the above, the herein described thread conductor operating
device or contrivance is so arranged, that with the smallest cop diameter, the distance A
is the greatest, and the angle-alpha, with the assistance of the thread ball which is
forming, is the most obtuse; but as the cop increases in diameter, so the corresponding
distance A becomes smaller and the angle-alpba-more acute.
In the annexed drawings, Figures 1 to 9 show this thread conductor contrivance
applied to ring spinning and yarn machines in cases where the thread winding is to
be done in cop form; and Figures 1 and 2 show the correct distance A between the

page_text: thread conductor 2 and the ring traveller with the smallest and largest cop
diameters.
Figures 3 to 6 show the different positions the thread conductor 2 assumes in
relation to the ring traveller bin the different radii in the cop from its commencement
to its completion. In Figure 7 the arrangement is shown in elevation; in Figure 8
in end elevation, and in Figure 9 in plan.
Figures 10 to 12 show the contrivance when the thread winding takes place on disc
bobbins namely, Figure 10 shows it in elevation, and Figure 11 in plan, whilst
Figure 12 is a detail showing the position of the thread conductor in relation to the
ring traveller with a full bobbin.
It will be evident from Figures 7, 8 and 9 that the lifting motions of the ring
rail 1, 1 and of the thread conductors 2ª, 2b is effected by an eccentric 4 fixed
to the shaft 3 which by means of the bevel wheels 5, shaft 6, worm wheel 7 and
worm S, receives its rotation from the lower roller shaft 9. The eccentrics 4 impart
through the reel 10 to the double rocking lever 11-whose bearing consists of the
pin 12 an up and down movement. On the right hand side of the rocking
lever 11 there is provided a movable shaft 13 on which the worm 14 and the
ratchet actuating wheel 15 are fixed; whilst the pawl holder 16, with its pawl 17,
is mounted loosely thereon. On the end of the shaft 13 a crank 18 is mounted
in such a manner that it can be removed at pleasure. The worm 14 gears with
the worm wheel 19 which is fixed to the three chain wheels 20, 21 and 22, all of
which are mounted and work together loosely on the axle 23. From these three
chain wheels by means of the chain wheel 20 the litting motions of both ring
rails are effected, namely, through the chain 24, chain wheel 25, shaft 26, tooth
wheel 27 and rack 28 of the ring rail 1°; and again through the chain 29, chain
wheels 30 and 31, shaft 32, tooth wheel 33 and rack 34 of the ring rail 1. The
chain wheel 21 has over and above the up and down movement, another, namely
the continuous raising of the thread conductors 2 and 2° to provide for, whilst the
chain wheel 22 has to regulate the position of the thread conductor at the commenco-
mont of the winding of the cop.
Motion is transmitted to both thread conductors 2" and 2b from the chain wheel 21
through the chain 35, guide pulley 36, to the chain wheel 38 fixed on the shaft 37",
and to the raising lever 39* fixed on the shaft 37 which grasps and works the thread
conductor shaft 41* which is fixed to the ring or collar 40. To the other side of the
machine the movement is transfered through wheels 42 and 42" provided with an
equal number of teeth (said wheels being mounted on the shafts 37 and 37b) to the
raising lever 39b, collar 40" and the thread conductor shaft 41b.
On the other hand the chain wheel 22 acts on the movement of the thread
conductors 2* and 2 through the chain 43 which is carried over a guide pulley 44-
mounted on the pin 12 of the lever 11-and connected to the circular segmental
cam 45 which is fixed to the shaft 37. The transmission of this movement to the
thread conductor on the other side of the machine is effected by the tooth wheels 42°
and 42, the raising levers 39 and 39, the collars 40 and 40° and the thread
conductor shafts 41° and 41. It may be here remarked that the stroke of the
lever 11 through due transmission of the stroke of the thread conductors 2" and 2b
as is apparent from Figure 7 is a much larger one than that of the ring rails 1*
and 1.
The mode of action of the thread conductor contrivance from the commencement to
the completion of the cop is as follows:-
From the commencement of the winding of the thread the positions of all the parts
connected with it are clearly shown in Figure 7. The ring rails are brought to their
lowest position by bringing the levers 11 to their lowest position and by winding
back the chain wheel 20 by means of the hand lover 18. Also the thread con-
ductors 2 and 2 have, through the simultaneous turning back of the chain wheel 21,
already ob.ained their lowest position, as shown in Figure 7 in dotted lines. They
must however finally be drawn to and so far raised until the required distance A
between the thread conductor and the ring traveller for the empty spindle is reached.

page_text: This is done by drawing back the chain 43 which has been wound in the reverse
direction from the chain wheel 21. The chain 35 will have in consequence become
so slack that, by raising the lever 11 the chain 35 will be slightly tightened in the
latter part of the stroke which is manifested in raising the thread conductor a little,
whilst at the commencement of the stroke the thread conductor is kept by the chain 43
at an equal fixed height when the same reaches the turning point of the lever 11, and
the up and down movements of the latter can consequently have no influence on the
motion of the parts of the thread conductor.
At each downward stroke of the lever 11 the pawl holder 16 strikes against the
adjustable stop bolt 46 and receives in consequence a partial revolution which is
communicated by the pawl 17 to the ratchet wheel 15. Through the latter there is
communicated by means of the shaft 13 and the worm 14-to the worm wheel 19
and chain wheels 20, 21 and 22 a small movement towards the left, by means of
which the chains 24 and 35 are wound up; on the other hand the, chain 43 is
wound off, from this there follows that the chain 24 raises the ring rails gradually to
a position corresponding to the winding on of the thread; but meanwhile the chain 43
gradually unwinds to such an extent that by the completion of the winding on the
conical top and at the greatest cop diameter (Figure 5) the throad conductors 2*
and 2 have reached, their lowest position as is shown in dotted lines in Figure 7.
From this point the chain 43 becomes by further unwinding continually more loose
and slack and ceases to have any influence on the movement of the thread conductor
up to the completion of the cop. Furthermore from this movement the full periodical
and the slowly progressive stroke movements of the thread conductors are taken up
solely by te chain 35 and are continued until the end of the cop with constant
regularity. After the removal of the cop, by turning the shaft 13 in a reverse
direction by means of the lever 18 all the moving parts of the ring rails and the
thread conductors are brought back into their original position so that the winding
may begin afresh.
The above described contrivance is much simpler when the winding of the thread
takes place on bobbins such as shown in Figures 10 and 11. With an empty bobbin
in this case, the distance A between the thread conductor and the ring traveller b
the distance is largest, but it becomes reduced a little by every fresh layer of thread
which is wound on untii, with a full bobbin, the determined minimum distance has
been reached.
The action of the eccentric 47 (Figures 10 and 11, Sheet 3,) is transmitted from
the lower roller 9 in the same manner as described with reference to Figure 7. The
eccentric 47 imparts in this case also by means of the wheel 48 the periodically
oscillatory stroke to the lever 49.
On the lever 49 there is provided a circular segmental cam 50 on which the
chain 51 lies and is fastened. This cam produces the stroke of the ring rail on the
right hand side through the chain wheel 52, shaft 53, tooth wheel 54 and rack 55,
and on the left side through the chain wheels 57 and 58, shaft 59, tooth wheel 60, and
rack 61.
The stroke of the thread conductor is also effected through the lever 49, but
proceeds from the chain wheel 62 which though connected with a similar actuating
mechanism as the chain wheels 20, 21 and 22 in Figures 7 to 9 has this difference,
that the chain 63 is wound off the chain wheel 62 a little. In consequence of this the
thread conductors after each fresh layer of thread, approach a little towards the ring
rails until with a full bobbin the smallest distance A² (Figure 12) is reached.
The motion of the thread conductor on the right hand side is effected through the
chain 63, loose guide wheel 64, chain wheel 65, shaft 66, chain wheel 67, chain 68,
and thread conductor shaft 69; and that of the left hand side through the chain 70,
chain wheels 71 and 72, shaft 73, chain wheel 74, chain 75, and thread conductor
shaft 76.
After the removal of the full bobbins the thread conductors are similarly placed
back in their former positions by reversing the motion of the chain wheel 62 by means
of the lever 18.

page_text: Having now particularly described and ascertained the nature and object of this
said invention and in what manner the same may be carried out into practical
effect, I declare that what I claim is :
1. In a machine of the type herein described the arrangement of parts by which
the tension of the thread is equalized in such a manner that the distance between the
thread conductor and the thread traveller is inversely proportional to the periodically
changing diameters of the wound thread, that is, for the smallest bobbin thickness the
greatest ratio, and for the greatest bobbin thickness the smallest ratio.
2. The arrangement and combination of parts by which the tension of the thread is
equalized, as specified in claim 1; herein set forth and as illustrated in the accom-
panying Drawings.
Dated this 4th day of August 1888.