An Electric Alarm or Stop Motion for Gill Drawing Frames as used for Flax and other Fibres.
Year: 1892

page_text: Date of Application, 23rd Nov., 1892
Complete Specification Left, 22nd Aug., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION.
An Electric Alarm or Stop Motion for Gill Drawing Frames as used
for Flax and other Fibres.
ADAM MCMEEKIN Manager and JOHN LOGAN Preparing Master both of
Cogry Mills Doagh County Antrim Ireland do hereby declare the nature of this
invention to be as follows:
This electric alarm for gill drawing frames is designed to call the attention of
the attendant whenever a "choke" or lump or thick place in the sliver arrives at
the back of the front or drawing roller; this is done by ringing a bell or by the
stoppage of the frame.
;
The bell is rung or the frame stopped by connecting an electric current which
rings a bell or liberates a weight or spring that moves the driving belt on to the
loose pulley.
To connect the electric current whenever a "choke" or accumulation of fibre.
takes place a delicately poised lever is set in touch with the sliver or its conductor
in such a manner that whenever any accumulation of sliver takes place on or behind
the drawing roller the delicately poised lever which is an electrode is caused to come
into contact with a wire which is also an electrode and so a circuit is completed
which sets the alarm bell ringing or liberates a catch that retains a weight or
spring which moves the driving belt of the machine on to the loose pulley.
The same arrangement of a delicately poised lever which is an electrode and
which is set in contact with the slivers passing between the drawing roller and the
delivering roller can be so adjusted as to cause an alarm in case of a thin place or
deficiency in the slivers."
Dated this 19th day of November 1892.
ADAM M MEEKIN.
JOHN LOGAN.
.COMPLETE SPECIFICATION.
An Electric Alarm or Stop Motion for Gill Drawing Frames as used.
for Flax and other Fibres.
We ADAM MC MEEKIN Manager and JOHN LOGAN Preparing Master both of
the Cogry Mills Doagh County Antrim, Ireland, 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 electric alarm or stop motion for gill bar drawing frames is designed to call
the attention of the attendant whenever a choke or lump or thick place in the sliver
arrives at the back of the front or drawing roller this is done by ringing a bell or
by the stoppage of the frame.
The bell is rung or the frame stopped by connecting an electric current which
rings a bell or liberates a weight or spring that moves the driving belt on to 'the
loose pulley and thus stop the frame; or preferably the belt is moved on to the
loose pulley by connecting an electric current with a coil magnet which attracts one
end of a balanced lever, the opposite end of which acts on another lever mounted
on a boss riding loosely on a shaft driven at a constant speed from a rotating part
of the frame, on this shaft a ratchet or catch is fixed and revolves at a constant
speed; the instant the magnet attracts the one end of the first mentioned lever the
other end of this lever forces a second lever into contact with the ratchet or catch
and is carried round with the ratchet wheel or catch, on the boss to which this
•

page_text: latter lever is attached a chain is fixed which is connected to any of the ordinary
belt fork arrangements used in such frames, and so shifts the driving belt on to the
loose pulley and thus stop the frame.
To connect the electric current whenever a choke or accumulation of fibre takes
place a delicately poised lever is set in touch with the sliver or its conductor in
such a manner that whenever any accumulation of fibre takes place on or behind
the drawing roller the delicately poised lever which is an electrode is caused to
come in contact with a wire which is also an electrode and so a circuit is completed
which sets the alarm bell ringing or liberates a catch that retains a weight or
spring which moves the driving belt of the frame on to the loose pulley; or
preferably as already explained, on the circuit being completed the coil magnet &
arrangement of levers act on the belt motion in such a way as to stop the frame or
machine.
The same arrangement of a delicately poised lever which is an electrode and
which is set in contact with the slivers passing between the drawing roller and the
delivery roller can be so adjusted as to cause an alarm in case of a thin place or
deficiency in the sliver.
Such being the nature and object of the said invention the following is a
complete description of same reference being had to the accompanying drawings,
in which
Fig. 1 is an end elevation of as much of a gill drawing frame as will shew the
application of our invention.
Fig. 2 is a front elevation of Fig. 1.
Fig. 3 is a plan or top view of as much of a gill drawing frame as will shew
the application of our invention.
Fig. 4 is a front and a side elevation of the boss F and lever G which carries the
chain L.
Fig. 5 is a front & a side elevation of a fixed conductor shewing the arrangement
for completing the circuit adopted with this. form of conductor.
Fig. 6 is an elevation shewing the sliver passing from the drawing roller over
the sliver plate on its way to the delivery roller.
Fig. 7 is a front elevation of Fig. 6.
Fig. 8 is a plan or top view of Fig. 7.
Similar letters of reference designate like parts in all the figures.
A, is the front or drawing roller of the frame, B is a worm attached to the
roller A. the worm B gears into the worm wheel C. which is fixed to the cross
shaft D. E is a ratchet wheel or catch fixed on to the rotating shaft D. F is a
boss carrying a lever G, the boss F being mounted loosely on the cross shaft D;
another lever H is carried above the coil magnet K and acts in such a manner that
when the electric current is connected the coil magnet K attracts and draws the
lever H down and consequently raises the opposite end of this lever which in its
turn raises the end of the lever G and consequently depresses the other end of this
lever G, until the rotating catch or ratchet E catches it and carries it and the
boss F to which as already pointed out the lever G is attached, to this boss Fa
chain L is fixed which is also made fast to the lever M which is mounted on the
rocking shaft J which has another lever O fixed to it this lever O being connected
to the segment I which carries the belt fork Q consequently on the boss F which
carries the chain L being forced to turn the lever M is moved and by the connection
pointed out, the belt is moved on to the loose pulley.
The two wires R and S which are electrodes run along the length of the frame
these are connected to the wires P. N which are connected with a dynamo, battery
or other source of electricity.
The wires R and S are carried by means of brackets in such a manner as to
insulate the wires when passing from one head to another. S is connected
to P and S to R by means of the delicately poised levers V. W the current
then passes to the bell and to the magnet, both of which are connected to the
wire N.

page_text: The wire S forms the axis of the delicately poised lever and is free to rotate
sufficiently to make contact and has arms or projections V. W made fast to it,
the arms V are set in contact with the conductor X and whenever a choke or
accumulation of fibres gather at the front roller the action of the gill bars force
the choke or accumulation against the conductor X which is forced outwards and
raises the arm V and carries round the arm W until it touches the wire R. the
connection is now complete and the bell is rung or the belt shifted on to the loose
pulley and the frame stopped before any damage is done by the choke or
accumulation of fibre.
H is a wedge shaped piece which on the rotation of the lever G depresses or
forces lever G until it is free of the catch or ratchet wheel E, thus leaving the
frame ready for starting by the attendant as soon as the choke or accumulation of
fibres is removed.
The conductor shewn in Figs. 1. 2 and 3 is what is known as the automatic
conductor and Fig. 5. shews, the method we adopt to obtain the connection and
completion of the electric current when a fixed conductor is used, inside the
conductor a lever T is fixed swinging on a centre, the arm or projection V which
forms part of the delicately poised lever passes through a slot in the conductor &
when a choke or accumulation of fibre is forced against the lever T the upper half
of which is caused to move and forces the arm V outwards bringing arm W into
contact with the wire R. thus completing the circuit.
In Fig. 6 the lower arm V of the delicately poised lever rests on the sliver Z
and the instant a thin place or breakage takes place in the sliver the lever falls until
it is stopped by the wire R which completes the circuit and rings the bell or stops the
frame by a similar arrangement of mechanism to that shewn in Figs. 1. 2 & 3
the wires P and N as in the other case being charged with electricity P being
connected to S and R to the bell.
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:
1st. The use in gill bar drawing frames such as are used for the preparation of
flax and other fibres, of a delicately poised lever which is an electrode and which is
set in contact with the sliver or its conductor in such a manner that when a choke
or accumulation of fibre takes place the delicately poised lever is forced in contact
with another electrode thus completing an electric circuit, and by the connections
and mechanism all as set forth and illustrated in the accompanying drawings or any
mere modification of the same, causing an alarm and shifting the driving belt on to
the loose pulley of the frame & thus stop it.
2nd. The use in gill bar drawing frames such as are used for the preparation of
flax and other fibres of a delicately poised lever which is an électrode & which is
set in contact with the sliver in such a manner that whenever a thin place, deficiency
or breakage in the sliver takes place the delicately poised lever comes in contact
with another electrode thus completing an electric circuit causing an alarm
to be rung or the driving belt to be shifted on to the loose pulley & thus stop the
frame.
Dated this 19th day of August 1893
ADAM MOMEEKIN.
JOHN LOGAN.