Improvements in or relating to Automatic Stop Motions for Spinning and similar Machines.
Year: 1894

page_text: Date of Application, 24th July, 1894
Complete Specification Left, 24th Apr., 1895-Accepted, 24th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Automatic Stop Motions for Spinning
and similar Machines.
We, CHARLES BARCLAY HOLLAND, Spinner, and JAMES FRASER, Mill
Manager, of Broadford Works, Aberdeen, Scotland, do hereby declare the nature
of this invention to be as follows:-
This invention relates to automatic stop motion for spinning and similar machines
the object being to prevent the continued feed of the thread after it has broken
and the consequent drawback well understood in the spinning trade of "double
spinning."
The present invention embraces the following features;—
Conveniently arranged we have an arm or lever provided with a balance weight
EO arranged that one end which to identify it we will call the lower end bears upon
the thread between the flyer and the feeding rolls; the other end of the arm is
provided with a heckle or any suitable form of cutting or breaking device so
arranged that when it comes in contact with the thread it will break or cut it.
This second or upper end normally lies near but just clear of the thread the other
end being held up by the thread and so weighted or halanced as to press upon that
thread with the desired amount of pressure. Should the thread break the lower
end of the arm ceases to be supported by the thread and the weight then over-
balances the other end which comes into contact with the thread at any suitable
point, say between the feeding and retaining rolls, and parts it. Should the thread
continue to be fed forward by the feeding rolls it does not reach the flyer, or the
threads of the other bobbins but merely falls on to a plate or equivalent, which
supports it and keeps it out of harm's way until the attendant has time to replace
the broken thread.
If desired the parting arrangement may take place in advance of the feeding rolls
in which case the feeding will stop as soon as the thread is parted.
The balance of the arm may be so arranged that although the lower or operative
end normally supported by the thread falls when the thread. breaks, nevertheless
the other end of the lever being longer if pushed back sufficiently far will overcome
the balance and hold the arm in its backward position, thus keeping the heckle or
equivalent clear of the thread while it is being replaced or re-united; or other
means may be employed for retaining the arm in any suitable position. We prefer
to make the balance weight adjustable so that the amount of pressure upon the
thread may be adjustable to the strength of the thread. Spring pressure can be
employed instead of the balance weight but we prefer the latter. The heckle or
other cutting or breaking device may be of any suitable description and may be
specially adapted to the qualities of the thread employed, for example for a fine
thread a piece of rough gutta percha, glass paper or other rough substance would
probably be sufficient.
Dated this 24th day of July 1894
W. P. THOMPSON & BOULT,
Agents for the Applicants.

page_text: Improvements in or relating to Automatic Stop Motions for Spinning
and similar Machines.
We, CHARLES BARCLAY HOLLAND, Spinner, and JAMES FRASER, Mill
Manager of Broadford Works, Aberdeen, Scotland, 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:-
This invention relates to automatic stop motion for spinning and similar machines
the object being to prevent the continued feed of the thread after it has broken,
which, if it takes place, frequently brings down the adjacent threads or produces
"double spinning.'
The invention will be best understood by reference to the accompanying drawings,
in which
Figure 1 is a vertical section through the machine showing one form of the
apparatus this being represented as out of operation and with the thread in working
condition.
Figure 2 is a similar view of the same apparatus but showing the thread broken
and the apparatus in operation to prevent a continuance of the feed.
Figure 3 shows a front view of the lower end of the thread parting arm of
Figures 1 and 2.
Figure 4 is a modification in detail of a portion of Figure 3, and
Figure 5 shows an alternative form of the apparatus as applied to the machine,
Figure 6 being a perspective view of this last mentioned apparatus apart from
the machine.
Like letters indicate like parts throughout the drawings.
66
"
In this Specification and claims the term "thread" is intended to include a
thread or filament whether technically known as a rove yarn or by some other
name. By the term "drawing rolls" we mean the pair of power-driven rolls
nearest to the spinning bobbin.
Referring first to Figures 1 and 2, A and B represent the feeding rollers of the
machine and C and D the drawing rollers, E and F being rollers technically known
as "binding rods," for putting the necessary tension upon the thread G. H is an
arm pivotted at H' to any convenient part of the framework and provided with an
adjustable balance-weight H2 which may be so fixed by the screw H³ that normally
the arm H would lie in the position indicated in Figure 2 with the arresting
device at its upper end in contact with the thread. This arresting device may be
made in the form of a heckle with a number of pins as shown in the drawings or it
may be a knife-edge or any other suitable form of device which will separate the
thread G at the point immediately above the drawing rollers C and D. The lower
end of the arm H is turned out at right angles at H* as indicated in Figure 3 so as
to provide a surface upon which the thread G may bear and, when in its normal
condition of tension as shown in Figure 1, hold the arm H in its backward position
so that the arrester 1 is clear of the thread G. The lower end of the thread G
passes to the other portions of the machine with which this invention is not
concerned and the operation is that so long as the thread maintains its tension and
does not break it bears upon the portion H of the arm H holding it in the position
shown in Figure 1 and thus preventing the arrester 1 from approaching the thread.
Should however the thread break the tension on H is relaxed and the weight H
over-balances the upper end of the arm H bringing the arrester I into contact with
the thread and parting it so that the drawing rollers C and D, which are driven by
the machinery, have no further power to draw the thread from the feeding
rollers A B or the reel or spool K on which it is carried. The rollers A and B

page_text: may be positively driven or merely allowed to turn as the thread passes through
them; in the former case they will continue to feed the thread but as it would
fall on to the plate or cover L it would not be in danger of catching the flyer or
doing any damage, or being itself damaged until the operator had time to repair it.
In Figure 2 the thread G is supposed to have broken at G¹ and it has ceased to
bear upon the arm H* in consequence of which the arrester I has struck the thread
and parted it at the point X.
As indicated in the dotted line in Figure 1 the arm H may be turned with the
arrester I removed to a considerable distance from the thread G and we find that
the balance weight H' may be so adjusted that although when the arm lies in the
position indicated in full lines in Figure 1 and the thread breaks, the arrester I
would be caused to approach the thread and suspend the supply nevertheless when
the operator is inserting or repairing a thread and moves the arm H into the
position shown in the dotted lines it will remain in that position and out of her
way until she has finished with the thread. However, any suitable kind of catch
for example the spring end N' shown in Figures 5 and 6, may be employed for the
purpose of holding the arm in the dotted position if required.
We have found that where the arm is too delicately balanced it is possible for
the thread to kick it over from the position shown in full lines in Figure 1 to the
position shown in dotted lines in Figure 1, and thus prevent its operating; to
prevent this the thread G is caused to run in a recess G¹ formed in or upon the
part H of the arm H. This recess may be provided either directly in the part H*
which may be divided for the purpose, but preferably it is formed by securing the
plate or guide M Figure 4, which may be soldered or otherwise secured to H*, its
operative edge being preferably rounded so as not to damage the thread.
We find that it is not absolutely necessary to use a balance weight for strong
threads but for weak ones it is desirable though in an arrangement such as shown
in Figures 5 and 6, which may be used for either strong or weak threads the
balance weight may be entirely dispensed with.
In the arrangement last referred to we provide a light spring N against whose end N¹
the upper end of the arm H is held whenever the thread G is intact and at its normal
tension, but as soon as the thread breaks or the tension becomes sufficiently slack
the spring end N' assisted by the weight of the arm H itself causes the upper end
of the arm to move towards the thread G and the thread-arresting device I to be
brought into contact with the thread which latter is thereby suspended as before
explained.
By moving the upper end of the arm H to the side of the spring-end N¹ opposite
to that against which it usually bears the thread-arresting device I may be kept
away from the worker's hand during the time the full bobbins are being removed or
at such other times as may be desirable. In Figure 6 we have shown a double
arrangement of the stop motion which it is convenient to use when such motions are
to be applied in multiple as they usually would be; if desired however each such
device may be independent of all the others. In the arrangement here illustrated
the springs N N¹ are secured upon the arms of a fork which may be formed in
part with the bracket plate ¹ by which the complete device is attached to the
spinning-machine framing; the springs N N¹ may however be supported in any
other convenient manner.
It will be understood that the before described apparatus is for the purpose only
of suspending the feed of the thread and it is not intended to stop the operation of
the working parts of the machine.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In apparatus such as described the employment of a pivoted arm having an
arresting device held out of engagement with the thread while the latter is at its

page_text: -normal tension but automatically, engaging with and parting the thread when the
latter breaks substantially as described.
2. Ina thread arresting device for spinning and similar machines a pivotted-arm
such as H carrying an arresting device such as I at one end and an adjustable
balance weight such as E3 at the other end substantially as, and for the purpose
described and illustrated in the accompanying drawinge.
3. In a thread arresting device for spinning and similar machines a pivoted arm
such as H H H 1 substantially as and for the purpose described and illustrated in
the accompanying drawings.
4. The combination with a spinning machine of an arm such as H substantially
as and for the purpose, described and illustrated in the accompanying. drawings.
5. In a thread arresting device for spinning and similar machines the combination
with a pivotted. arm such as H of a spring such as N1 N substantially as and for
..the purpose described and illustrated in the accompanying drawings.
6. The combination and arrangement of parts constituting the complete automatic
..stop motion attachment for spinning machines substantially as described and
illustrated in Figure 6 of the accompanying drawings.
Dated this 23rd day of April 1895.
C. BARCLAY HOLLAND.
JAMES FRASER.
Boult & Wade,
Agents for the Applicants.
C. BARCLAY HOLLAND.
JAMES FRASER.
Boult & Wade,
Agents for the Applicants.