Improvements in the Spinning and Twisting Machines known as Ring Throstles.
Year: 1899

page_text: Date of Application, 14th Aug., 1899-Accepted, 30th Sept., 1899
:
Improvements in the Spinning and Twisting Machines known as
Ring Throstles.
I, JOSEPH ALEXIS ALBERT IMBS, of 20, Rue Greuze, Paris, in the Republic of
France, Engineer, 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 the spinning and twisting machines known as ring
throstles and the object of my said invention is to provide improved machines
which will spin in a more delicate, or finished, manner and with an available
length of the bobbins greater than is the case with such machines as hitherto
constructed. While producing very fine yarn I am able, with the machine con-
structed in accordance with my invention to fill bobbins as long as those which
are filled in self-acting frames (say bobbins from 18 to 20 centimetres long) and
at the same time to work the throstle frame at a high speed without any undue
expenditure of motive power and without the spindles being farther apart than
usual. employ friction rollers enclosed in a roller plate, or box against which
rollers the driving cords press the collars of the spindles. It is however difficult
to close such a hollow roller plate, or box, so effectively as to protect the rollers
from dust, while at the same time allowing the said plate, or box, to be readily
opened for cleaning and lubricating. On the other hand it has not been
hitherto possible to operate efficiently or readily long spindles at a high speed
where the object is to produce fine yarn requiring the employment of light
travellers by reason of the deviation, "ballooning" or bulging of the yarn.
Above
My invention provides devices by which the above mentioned drawbacks are
obviated and I will describe these devices with reference to the accompanying
drawings promising that I do not limit myself to the precise details illustrated.
Fig. 1 is a vertical section and Fig. 2 is a side elevation of part of a ring
throstle spinning frame constructed in accordance with my invention.
the hollow roller-plate, or box, a I place a stationary plate 6 which is secured to
the frame by means of brackets c, and through the said plate b the spindles pass.
The said plate forms a lid to the box a, which box is secured not to the
frame but to brackets d working on vertical slide-ways on the frame. Each
bracket & works on a screw e supported by the lower bearing rail f in which the
said screws are mounted so that they can be rotated but will not move longi-
tudinally. The said screws e are operated by a longitudinal shaft g through the
medium of bevel gearing as shewn there being a hand wheel at the end of the
shaft g to operate it so that the hollow roller plate or box, a, can be lowered when
it is desired to gain access to it for lubricating, cleaning, or other purpose. The
vertical covers or guards, y secured to, and sliding with the box a serve to
protect the lower parts of the spindles and their bearings from dust both at front
and rear.
The spindle extends out as much as may be necessary for the long cop which
it is desired to wind, but the necessity of enabling the spindle i to be filled with

page_text: yarn up to the top involves the necessity of keeping free a somewhat consider-
able space say 10 centimetres--between the top of the spindle and the guide
eyes k. With a spindle, say 21 centimetres in length, the length of loose yarn
between the guide eye k and ring m would consequently vary between 31 centi-
metres at the beginning and 10 centimetres at the end of the rise. This initial
length of loose yarn is much too great and is apt to cause very considerable
bulging, "ballooning," or deviation, of the yarn which could only be overcome
by means of travellers which would be too heavy to be borne by the
yarn here
contemplated. I reduce this great initial length. whilst however retaining the
serviceable finishing length by imparting to the guide eye bar na vertical move-
ment corresponding to, but less in extent than, that of the ring-plate o. To
effect this I mount the guide-eye bar n upon vertical rods p, guided by brackets q,
the lower ends of the said rods resting upon rollers r, the journals of which
are secured to the levers s, (which lift the ring-plates o), at a distance from the
centre on which the said levers turn corresponding to the reduced motion required.
Supposing, for example, the stroke to be reduced to one-third; a partial stroke
of the ring-plate, of 39 millimetres, will then correspond to a partial stroke of
the guide eye bar, of 13 millimetres; a full stroke of 210 millimetres, performed
by the ring-plate, will correspond to a full stroke of the guide eye bar, of 70
millimetres. If the motion of such guide eye bar has been adjusted at the
beginning of the rising stroke so that the distance of the guide eyes from the
spindle tops is 30 millimetres, this distance of 30 millimetres will increase to
100 millimetres by the time the said stroke is completed.
The important improvement thus effected in regard to the period of difficulty
which has to be gone through during the first half of the time of formation of
the cop would, nevertheless still allow a bulging ballooning or deviation of the
yarn to take place during that period; which bulging ballooning or deviation
would necessitate a construction of the machine with the spindles placed farther
apart than usual,--say at 85 millimetres instead of at 65 millimetres from each
other, and would also involve too slow a motion. In order to remedy this
drawback I provide dividing plates (of polished sheet brass or other material)
between each two adjacent spindles which sheets are carried by, and are movable
vertically in, the guide eye-bar n by the bent tail ends w engaging in holes in the
guide eye-bar n between the guide eyes so that the said plates t rise and fall
with the guide eye-bar and protect each yarn from its neighbour during the
period of difficulty above referred to. As the formation of the cop progresses
the space between the ring-plate and the lower parts of the plates t will gradually
become less and eventually the ring-plate will meet such plates, from which
however no inconvenience can arise since the said plates are moveable in the
guide eye-bar and towards the end of the stroke the ring plate lifts these plates
which are however very light.
i
It will be understood that it is necessary in order to cause the said plates t to
answer the purpose desired that the aforesaid vertical motion be imparted to
the guide eye-bar, for if such motion were fixed permanently say at 10 centi-
metres above the spindles, for the purpose of affording sufficient protection to
the yarns at the beginning of the stroke, it would be necessary to extend them
much farther downwards, and, at the end of the stroke, the ring-plate would cause
them to interfere with the mechanism or parts above such as the ties or the feed
rolls z and the like.
All these arrangements may be applied to machines intended for twisting as
well as to those for spinning.
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:
i
1. In spinning and twisting frames of the kind referred to a roller plate or
box such as a containing rollers for supporting the spindles and closed by means

page_text: of a stationary cover such as 6 and moveable vertically so as to give access to the
said roller plate or box when required substantially as hereinabove described and
illustrated in the accompanying drawings.
2. In spinning and twisting frames of the kind referred to connecting the
guide eye bar n to the levers s (operating the ring plate o,) for the purpose of
imparting to the said guide eye bar na movement proportionate to that of the
ring plate substantially as hereinabove described and illustrated in the accom-
panying drawings.
3. In spinning and twisting frames of the kind referred to the interposition
between each two adjacent spindles of a plate such as t provided with a tail
piece w capable of sliding in the guide-eye bar n for the purpose of avoiding the
inconvenience resulting from the bulging, deviation, or ballooning, of the yarn
substantially as hereinabove described and illustrated in the accompanying
drawings.
4. In spinning or twisting frames of the type referred to the combined arrange-
ment of moveable plates t engaged with and capable of moving relatively to, the
guide-eye bar n and means for giving to the said bar a movement proportionate
to that of the ring plate substantially as hereinabove described and illustrated in
the accompanying drawings.
1000
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.