An Improved Automatic Brake Device for Whims or Reels of Wire-drawing Machines.
Year: 1896

page_text: Date of Application, 27th Apr., 1898
Complete Specification Left, 1st Jan., 1897-Accepted, 13th Mar.. 1897
PROVISIONAL SPECIFICATION.
An Improved Automatic Brake Device for Whims or Reels of
Wire-drawing Machines.
I, HENRI PIEPER fils, of Rue de Bajards, Liege in the Kingdom of Belgium,
Managing Director, do hereby declare the nature of said invention to be as
follows:-
This invention relates to an automatic brake-device for the whims or reels (I will
refer to it as the reel) of wire-drawing machines by which in case of the breakage of
a wire, or the sudden stoppage of the machine, whilst the reel is rotating at full speed
the wire is prevented from running off, or winding back and by which whilst such
reel is in normal motion, the wire is prevented from unwinding in greater quantity
than necessary.
To accomplish this object, there is secured to tho reel of an electrically operated
wire-drawing machine a pulley with which co-operates any suitable brake-device
under the pull of a spring or a weight. An armature of an electro magnet (or the
core of a solenoid) excited by the operating ourrent, is inserted in a connection
between the brake and its spring in such a manner, that it is attracted in the direction
opposite to that in which the spring or weight exercises its pull. These forces, acting
in opposite directions, are so regulated that, under ordinary circumstances, the brake
ensures the normal motion of the machine, whereas, in the event of the wire breaking,
it comes into full operation; for, then, the motor running idle under the action of a
feeble current, the magnetisation of the electro magnet or solenoid is diminished and
the said spring thereby allowed to exert its full drawing action, so that it applies the
brake.
The effect will of course be the same if, by any suitable means, the motor is caused
to stop whenever a wire breaks, and the same electro magnet, that sorves to control
the brake-device of the reel, may be employed to bring the motor to a stop, through
the medium of suitable mechanism.
When the brake is combined or connected with the reel of a wire-drawing machine
driven by other motive power than electricity, such brake may be applied by the pull
of a spring or a counter-weight as before, but in this case the spring is connected also
with the operating lever of the wire-drawing machine by means of a cord, or any
other means of connection which is combined with another spring or weight in such
a manner as to counteract the pull of the brake-spring, so that, during the operation
of the machine, the difference between the action of said two springs or weights, is
just sufficient to ensure normal motion, while in the condition of rest, the counter-
acting spring or weight is inoperative, so that the spring or weight which applies the
brake is free to exert the power requisite for at once arresting the motion of the reel.
A brake-dovice arranged as described is automatically brought into operation
whereby all drawbacks and loss of time which otherwise the irregular running of the
reel is apt to cause are avoided.
Dated the 27th Avril 1896.

page_text: AD Improved Automatic Brake Device for Whims or Reels. of
Wire-drawing Machines.
I, HENRI PIEPER fils, of Rue de Bajards, Liege, in the Kingdom of Belgium,
Managing Director, 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 an automatic brake-device for the whims or reels (I will
refer to them as the reels) of wire drawing machines by which, in case of the breakage
of a wire, or the sudden stoppago of the machine, whilst the reel is rotating at full
speed, the wire is prevented from running off, or winding back, and by which whilst
such reel is in normal motion, the wire is prevented from. nnwinding in greater
quantity than necessary.
To accomplish this object, there is secured, to the reel of an electrically operated
wire-drawing machine, a pulley with which operates any suitable brake-device under
the pull of a spring, or a weight. An armature of an electro-magnet (or the core of
a solenoid) excited by the operating current, is inserted in a connection between the
brake and its spring in such a manner, that it is attracted in the direction opposite to
that in which the spring, or weight, exercises its pull. These forces, acting in
opposite directions, are so regulated that, under ordinary circumstances, the brake
ensures the norinal motion of the machine, whereas, in the event of the wire breaking,
it comes into full operation; for, then, the motor running idle under the action of a
feeble current, the magnetisation of the electro-magnet, or solenoid, is diminished and
the said spring is therefore allowed to exert its full drawing action, so that it applies
the brake.
The brake will of course be the same if, by any suitable means, the motor is caused
to stop whenever a wire breaks, and the same electro-magnet, that serves to control
the brake device of the reel, may be employed to bring the motor to a stop, through
the medium of suitable mechanism.
When the brako is combined, or connected, with the reel of a wire-drawing machine
driven by other motive power than electricity, such brake may be applied by the pull
of a spring, or a counter-weight as before, but, in this case, the spring or weight is
connected also with the operating lever of the wire-drawing machine by means of a
cord, or any other means of connection, which is combined with another spring, or
weight, in such a manner as to counteract the pull of the brake-spring, so that, during
the normal operation of the machine, the difference between the action of said
two springs, or weights, is just sufficient to ensure normal motion, whilst when the
said lever is caused to abandon the working position, the counter-aoting spring, or
weight, becomes inoperative, so that the spring, or weight, which applies the brake is
free to exert the power requisite for at once arresting the motion of the reel.
A brake device, arranged as described, is automatically brought into operation
whereby all drawbacks and loss of time, which otherwise the irregular running of the
reel is apt to cause, are avoided.
On the annexed sheet of drawings,
Figures 1 and 2 represent respectively in elevation and in plan the electro-
magnetically operated arrangement, and

page_text: Figures 3 and 4 represent respectively in elevation and plan the spring- (or weight)
actuated arrangement.
Like letters of reforence are used in the several figures for indicating similar
parts.
and
Referring to Figures 1 and 2, a is the reel secured to a pulley & mounted npon
the vertical shaft c. d is the brake of well known type, and e is a spring tending
to draw the brake away from the circumference of the pulley b. is another
spring which, through the medium of the connection g, tends to apply the brake.
In the arrangement illustrated the connection g forms a part of the spring
carries the armature h of an electro-magnet i of which the coil is placod in the
circuit of the electro-motor k which drives the drum 7. The said electro-magnet i
is arranged in relation to its armature h, so that the said armature is attracted in
a direction opposite to that in which spring is acting. The powers of the electro-
magnet and the springs are so regulated that, as long as there is a current of
normal condition passing through the coil of the electro-magnet i the armature /
is attracted thereby and the pull of the spring is counter-acted so as to allow the
spring to hold the brake d in such relation to the pulley 6 that acceleration of
the reel a is prevented. But if the said current, from any cause falls below its
normal condition, which, as is well known to electricians, will occur as soon as the
load of the motor k is diminished by rupture of the wire, then the attraction of
the electro-magnet i on the armature will be reduced, and the spring, being
thus released, overcomes the counter-force opposed to it by the springe and applies
the brake d. It is obvious that in this arrangement a solenoid and core may bo
employed instead of the electro-magnet i aud arinature h, the coil of the solenoid
being placed in the circuit of the motor k, and the core forming a part of the
connection g.
In the arrangement Figures 3 and 4, which is intended for use with wire-drawing
machines driven by other motive power than electricity, a spring is substituted
for the electro-magnet i and armature h in the following munuer: The end fl of
the spring which is connected to the brake d, is also connected to the starting
lever m of the wire-drawing machine by the connection n which is passed round a
loose pulley o arranged at the side in advance of the end of the spring, and in
this connection n the spring is inserted. The machine is, as usual, provided with a
dovice, not shown in the drawing, which, in the event of the wire being broken, is
automatically actuated so as to throw back the starting lever. The forces of the
several springs are so determined that, as long as the lever m is in the working
position the spring drawing on the spring in the same direction as the
spring prevents the spring from applying the brake d, thereby allowing
the spring
e to maintain the latter in such relation to the pulley b as is required
for ensuring the proper rotation of the reel. But when the lever m is thrown
back, the spring fis relieved from the pull of spring it, and the spring overcomes
the pull of spring e and applies the brake.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In combination with a spring- or weight-actuated brake for the whim or reel
of wire-drawing machines driven by electricity; an electro-magnet or solenoid, so
arranged as to counteract the actuating, spring, or weight, the said electro-magnet
or solenoid being excited by the working current of the motor, and its armature or
core being arranged in the connection between the brake and its actuating spring
or.weight, so as to be drawn by the attraction of the electro-magnet or solenoid in
a direction opposite to that in which the actuating spring or weight acts on the
brake, substantially as and for the purpose hereinbefore described.
2. In combination with a spring- or weight-actuated brake for the whim or reel
of wire-drawing machines, a counter-spring connected at one end to that end of

page_text: the brake-actuating spring or weight which is connected with the brake, and at the
other end with the starting lever of the machine, substantially as and for the purpose
hereinbefore described.
Dated this 1 d
T
1007
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.