Apparatus for Automatically Stopping Lace Machines when Warp or Spool Threads Break.
Year: 1892

page_text: Date of Application, 4th Nov., 1892
Complete Specification Left, 4th Aug., 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
Apparatus for Automatically Stopping Lace Machines when Warp or
Spool Threads Break.
I, EDWARD COPE, of Chilwell Hall, near Nottingham, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
According to this invention each warp or spool thread carries a lingoe in the
form of a long narrow dropper which falls when the thread breaks and puts in
action, either electrically by closing a circuit or mechanically, the apparatus for
stopping the machine.
The mechanism employed is as follows:-The lingoes pass through sleys under
which a disengaging bar oscillates. When the threads are intact the lingoes are
above the path of the disengaging bar and the action of the machine is uninter-
rupted but when a thread breaks, its lingoe drops in the sleys and comes into
contact with and arrests the disengaging bar which brings into action the apparatus
for stopping the machine.
The disengaging bar may either oscillate longitudinally or transversely, in the
former case it is in the form of a rack which can move in one direction by
lifting the dropped lingoe but having its motion in the other direction prevented
In the latter case it is in
by reason of the lingoe holding in one of its teeth.
the form of a blade which comes against the edge of any dropped lingoe and is
so arrested.
The stopping apparatus may be actuated by the disengaging bar in various
ways It may carry a lever connected to the belt shifting mechanism and having
upon it a truck which when the disengaging bar is arrested lies in the path of
a cam projection on a rotating shaft so that the rotation of the cam turns the
lever and throws the belt off whilst when the disengaging bar is free its oscillations
carry the truck to one side so as to miss the rotating cam at each turn.
Dated this 4th day of November 1892.
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Apparatus for Automatically Stopping Lace Machines when Warp or
Spool Threads Break.
I, EDWARD COPE, of Chilwell Hall, near Nottingham, Manufacturer, 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:-
According to this invention each warp or spool thread carries a lingoe in the
form of a long narrow dropper which falls when the thread breaks and puts in
action, either electrically by closing a circuit or mechanically, the apparatus for
stopping the machine.
The mechanism employed is as follows:-The lingoes pass through sleys under
which a disengaging bar oscillates. When the threads are intact the lingoes are
above the path of the disengaging bar and the action of the machine is uninter-
rupted but when a thread breaks, its lingoe drops in the sleys and comes into
contact with and arrests the disengaging bar which brings into action the apparatus
for stopping the machine.
The disengaging bar may either oscillate longitudinally or transversely, in the

page_text: former case it is in the form of a rack which can move in one direction by lifting
the dropped lingoc but having its motion in the other direction prevented by
reason of the lingoe holding in one of its teeth. In the latter case it is in the
form of a blade which comes against the edge of any dropped lingoe and is so
arrested.
The stopping apparatus may be actuated by the disengaging bar in various
ways: It may carry a lever connected to the belt shifting mechanism and
having upon it a truck which when the disengaging bar is arrested lies in the
path of a cam projection on a rotating shaft so that the rotation of the cam turns
the lever and throws the belt off whilst when the disengaging bar is. free its
oscillations carry the truck to one side so as to miss the rotating cam at each
turn.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan, Figure 2 an end elevation, and Figure 3 a front elevation
of part of a lace machine to which my invention is applied.
a and b (Figure 2) are the warp and spool threads, they are led into the machine
in the usual way and pass through eyes c' at the tops of lingoes c working in
sleys d. One of these lingoes is shown full size in side and edge elevation at
Figures 4 and 5.
Rack like disengaging bars e e with teeth e' (Figure 5) oscillate longitudinally
beneath the lingoes c.
The upper and lower bars e are connected together at intervals by vertical
bars and the lower bar e is supported by and moves upon angle plates es fixed
to the frame of the machine.
g
The bars e are driven from the shaft f.
is an eccentric fixed to the shaft and having on one face a cam projection gl.
his a shaft having fixed to it at one end an arm carrying a truck bearing
on the cam g' and at the other end an arm k which is slotted to receive a pin e
fixed to the upper bar e.
The truck is kept in contact with the cam g' by the spring e³ fixed to the
bar e and tending always to draw it to the left (Figure 3).
The shaft is driven from any of the moving parts of the machine.
The breaking of a thread and the dropping of a lingoe does not prevent the
bars e from moving to the right of Figures 3 and 5 but only prevents their
return.
I is an arm fixed to the shaft h at its lower end it carries a pin working
in the slot m' in the rod m pivotted at m³ to rod or link n which in its turn
is pivotted at n¹ to the horizontal lever o pivotted at one end o' to the frame
of the machine and carrying at its other end a truck o' working on the edge of
the eccentric disc g. The lower end of the rod n is slotted at n² to receive the
horizontal bar or lever p fixed to the shaft y working in bearings and having
also fixed to it the upright rod which has pivotted to its upper end the rod s
actuating the belt shifting mechanism.
So long as the threads remain intact the rods e oscillate to and fro being
moved in one direction by the cam g' and in the other by the spring and the
rod n also oscillates about its pivot n' being moved in one direction by the rod m
and in the other by the spring n³ its oscillations being limited in one direction
by the pin p and in the other by the shoulder p on the bar p the parts being
so arranged that as n is moving to the right of Figure 3 the pivot n' is rising
through the action of the eccentric g.
If however a thread breaks, a lingoe drops and the bars e are arrested as soon
as they reach their extreme right hand position Figure 3. At this time the
lower end of the rod is against the left of the shoulder and the pin is at
the right hand end of the slot m'. As the rod m is now stationary there is no
longer anything to draw the rod n to the left as it descends and when the bottom of

page_text: the slot n reaches the bottom of the shoulder p' the spring n³ presses the rod n
further to the right so that the slot passes over the shoulder. When therefore the
rod again rises through the action of the eccentric g it carries the end of
the bar p up with it thereby moving the shaft g and rod r to the left throwing off
the belt.
When working electrically the bar e may be connected to one pole of a battery
and each of the lingoes c to the other pole so that when a lingoe drops the circuit
is closed through an electromagnet which withdraws a bolt so releasing a weighted
lever which shifts the belt.
Figures 6 and 7 show a similar arrangement where the bars e oscillate. trans-
versely instead of longitudinally. In this arrangement the bars e are mounted on
T shaped levers t fixed on shafts t¹ and pivotted to a rod t connecting them
together. One of the shafts t¹ has an arm u fixed to it carrying at its end a
bowl u' working on the edge of the eccentric
9. is a rod whose lower end works
on a universal joint »', and which carries at its upper end a bowl y' bearing against
the side of the disc g. The rod is connected by a bar to the lower lever t.
So long as the threads remain intact the revolution of the shaft and eccentric
causes the bars e and to oscillate to the right and left of Figure 6 the mechanism
being so timed that the bowl always misses the cam projection g¹.
"
g
If however a thread breaks, a lingoe drops and the bars e and v are arrested as
soon as they reach their extreme right hand position Figure 6. As the shaft f
continues to revolve the cam projection g' forces the bar to the right of
Figure against the spring e pulling with it the rods actuating the belt shifting
mechanism.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In lace machines providing each warp and spool thread with a lingoe which
falls when the thread breaks and puts in action the apparatus for stopping the
machine substantially as described.
2. The combination of lingoes upon the threads with a longitudinally oscillating
rack which is arrested when a thread breaks and a lingoe drops and puts in action
the apparatus for stopping the machine substantially as described.
3. The combination of lingoes upon the threads with a transversely oscillating bar
which is arrested when a thread breaks and a lingoe drops and puts in action the
apparatus for stopping the machine substantially as described.
4. Apparatus substantially as described and shown at Figures 1 to 5 of the
drawings.
5. Apparatus substantially as described and shown at Figures 6 and 7 of the
Irawings.
Dated this 2nd day of August 1893.
EDWARD COPE.