Improvements in the Stop Motion of Drawing Frames used in Cotton Spinning.
Year: 1895

page_text: Date of Application, 23rd Mar., 1895
Complete Specification Left, 23rd Dec.. 1895-Accepted, 25th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements in the Stop Motion of Drawing Frames used in
Cotton Spinning.
I DYSON BARKER of 90 Ashton New Road, Beswick, near Manchester, Fitter,
do hereby declare the nature of this invention to be as follows:-
My said invention relates to the machines used in cotton spinning known as
drawing frames.
Such machines are constructed in sections known as heads and each head is
again subdivided into deliveries in each of which a number of carded slivers herein-
after referred to as ends are combined into a single end and are at the same time
stretched out or drawn by the action of the drawing rollers.
Such machines are usually provided with a stop motion for automatically
stopping part of the machine in the event of one of the ends breaking. Hitherto
such stop motions have been constructed and applied in such a manner that in the
event of one of the ends breaking the head of the machine in which it is situate
ceases to operate until the breakage is made good.
The object of my said invention is to provide means for stopping only the
particular delivery in which the broken end is situate while the other deliveries in
the same head continue their work.
For this purpose I provide opposite the rear rollers of each delivery a pair of
independent rollers which I term breaking rollers and which I cause to stop in
the event of an end breaking. On their ceasing to revolve they nip the still
unbroken ends which are thus torn asunder by the action of the drawing rollers in
front. The attendant then picks up the broken end presents it to the breaking
rollers restarts the delivery and joins the end as it leaves the front of the machine
to the previously broken end.
For stopping the breaking rollers I may use various combinations of mechanism
and may utilise the existing well-known stop motions. For this purpose I use for
example a central driving shaft running the whole length of the machine and
drive therefrom by suitable gearing a series of short spider shafts extending only
the length of each delivery. Each spider shaft works in combination with
weighted fingers or detector levers which stop the spider shaft in the event of an
end breaking. The breaking rollers herein before referred to are driven from the
said spider shaft by suitable gearing. The spur wheel which drives the spider
shaft is combined with a clutch in such a manner that in the event of the spider
shaft being stopped by one of the detector levers the clutch automatically slides
the said spur wheel out of gear with its driver on the main shaft or otherwise
interrupts the connection.
A weighted lever or spring is used to bring the clutch back into engagement
on the obstacle to the revolution of the spider shaft being removed.
In lieu of special breaking rollers I may use the rear pair of drawing rollers by
dividing these into lengths corresponding to each delivery and driving them
separately.
Dated this 22nd day of March 1895.
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicant.

page_text: Improvements in the Stop Motion of Drawing Frames used in
-Cotton Spinning.
I DYSON BARKER of 90 Ashton New Road, Beswick, near Manchester, Fitter,
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 said invention relates to machines used in cotton spinning known as drawing
frames.
Such machines are constructed in sections known as heads and each bead is
again subdivided into deliveries in each of which a number of carded slivers
bereinafter referred to as ends are combined into a single end and are at the
same time stretched out or drawn by the action of the drawing rollers.
Such machines are usually provided with a stop motion for automatically
stopping part of the machine in the event of one of the ends breaking. Hitherto
such stop motions have been constructed and applied in such a manner that in the
event of one of the ends breaking the head of the machine in which it is situate
ceases to operate until the breakage is made good.
The object of my said invention is to provide means for stopping only the
particular delivery in which the broken end is situate while the other deliveries in
the same head continue their work.
In order to more clearly describe my said invention I have appended a sheet of
drawings to which reference is hereinafter made.
In the said drawings
Fig. 1 is a sectionai clevation through - of Fig. 2.
Fig. 2 is a plan.
Fig. 3 is an end elevation as seen in the direction of the arrow in Fig. 2.
In these drawings only so much of one delivery of a drawing frame is shown as
is necessary for the purpose of describing my said invention. It is therefore to
be understood that the rest of the machine is constructed in the usual manner.
In the drawings a a¹ a a³ are the drawing rollers as at present in use, b is the
funnel through which the sliver is drawn by the calender rollers c, d is the coiler
through which the sliver is delivered to the can e, f represents the detector spoons
over which the sliver is led in the usual manner. The direction in which the
sliver travels is indicated by the dotted line z (Fig. 1).
According to my said invention I provide opposite the rear rollers a³ of each
delivery a pair of independent rollers a' which I term breaking rollers and which
by the means hereinafter described are caused to stop when an end breaks. On
their ceasing to rotate they nip the still unbroken ends which are then torn
asunder by the action of the drawing rollers a³. The attendant then picks up the
broken end presents it to the breaking rollers restarts the latter and joins the end
as it leaves the other side to the previously broken end.
For stopping the breaking rollers I may use various combinations of stop
mechanism. For example I may use a spider shaft g such as is at present in use
in combination with the usual detector spoons 1. The spider shaft is however
made in lengths corresponding to each delivery only instead of as a continuous
shaft extending the whole length of a head of several deliveries.
On the spider shaft g is a spur wheel k gearing into another spur wheel / which
in turn gears into a spur wheel m mounted on the bottom breaking roller a. By
this gearing the rotation of the spider shaft is transmitted to the breaking
rollers and anything arresting the rotation of the spider shaft will stop the breaking
rollers.
For driving the spider shaft I find it convenient to derive the motion from the

page_text: rear pair of drawing rollers a³ (Fig. 3). Mounted on the lower of the two
rollers as is a spur wheel o (see also bottom of Fig. 2) gearing into a spur wheel p
on a shaft p extending the whole length of the machine. For each delivery
I mount on the shaft pl a spur wheel which gears into a spur wheel p³ attached
to or formed integral with the part pt of a clutch mounted loosely on the
prolongation g of the spider shaft. The other part p³ of the clutch is secured to.
the spider shaft. When the machine is in operation with the parts in the
positions shown in full lines in Fig. 2 and all the ends are intact the weight of
the ends on the detector spoons keeps the lower ends of the latter clear of the
spider shaft which is then free to rotate and to drive the bottom breaking
roller a. Should one of the ends break the corresponding detector spoon f swings
upwards and outwards so that the lower end thereof swings inwards and arrests.
the rotation of the spider shaft. Thereupon the part of the clutch p³ stops and
the inclined faces of the clutch force the other part p₁ to slide longitudinally
on the part of the spider shaft so as to assume the position indicate. by dotted
lines at in Fig. 2. The spider shaft is thereby disconnected from its driving
source. It' will be evident from the foregoing description that the breaking
rollers will now cease to revolve and will nip the remaining and as yet unbroken
ends which will then be torn asunder by the continued rotation of the drawing
rollers which are driven in the usual manner.
A levers attached to a rock shaft and provided with a balance weight or
handle s² is connected to a slide bar s³ which has an upward prolongation staking
against the outer surface of the wheel p³. By the rotation of the rock shaft s¹
the clutch may be caused to re-engage when the broken ends have been joined.
The spider shaft need not necessarily be driven from the drawing rollers.
motion may be derived from any convenient source.
Its.
In lieu of special breaking rollers such as at, I may use the rear pair of drawing
rollers a³ for the same purpose by dividing the lower roller of this pair into-
lengths corresponding to each delivery and driving such lengths separately so as
to stop the rotation thereof on the breaking of an end.
In the foregoing description the word rear is throughout to be understood as.
applying to the right hand of Figs. 1 and 2.
If it is desired to prevent the broken ends being drawn down into the can e by
the calender rollers c I may in some cases form the calender rollers as shown in.
plan in Fig. 2 that is to say with recesses c¹ formed therein. On the breaking of
an end the funnel is caused to slide in longitudinally along the rollers c so as to
bring the sliver between the said recesses c¹ when the calender rollers c will cease
to draw the sliver.
The longitudinal shifting of the funnel may be "conveniently effected by a
lever pivotted at 62 engaging with a fork lever excentric or cam 6 mounted on
the rock shaft s¹.
The various shafts and rollers are to be mounted in bearings or on the framing in.
the usual manner as will be well understood by those conversant with such
machines without further description.
I wish it also to be understood that my said invention is not limited to the
particular combinations of mechanism shown for carrying it into effect these may
be varied to suit the particular type or construction of drawing frame to which it
is desired to apply my said invention, without departing from the essential features
thereof. For instance in many cases an electric stop motion as at present
employed may be used for stopping the breaking rollers of a delivery while the
drawing rollers of the same delivery continue to rotate.
Having now particularly described and ascertained the nature of my said inven-
ion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a drawing frame the combination with drawing rollers of a separate pair
of breaking rollers which

page_text: drawing rollers continue to rotate substantially as and for the purpose hereinbefore
set forth.
2. In a drawing frame the use combination and arrangement with the drawing
rollers of a pair of independent breaking rollers for each delivery deriving motion
from a spider shaft operated by a clutch which disengages on the breaking of an
end substantially as and for the purpose set forth.
Dated this 21st day of December 1895.
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicant.