Machines for Covering Wire and other Cores.
Year: 1890

page_text: Date of Application, 4th Feb., 1890-Accepted 12th Apr., 1840
COMPLETE SPECIFICATION.
Machines for Covering Wire and other Cores.
We, JOHN SCOTT, of Court Street, Plymouth, in the County of Plymouth and
State of Massachusetts, United States of America, Designer, and FRANK ELMER
DAVIS, of Main Street, Somerville, in the County of Suffolk and State of Massa-
chusetts, United States of America, Electrical Engineer, do hereby declare the
nature of our invention for MACHINES FOR COVERING WIRE AND OTHER CORES, and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
Our Invention relates to machines for covering a core of wire, thread, or other
material, with another wire, thread, or other material, and especially to the devices for
stopping the machine immediately upon the breaking or running out of the covering
material, or upon the failure of the same to cover the core completely. The object of
the Invention is to permit the machine to be run at great speed, and at the same time,
to prevent waste of material, loss of time and the production of an imperfect article,
especially when the machine is used for covering a wire with an insulating material.
In the drawings in which we have shown convenient embodiments of our invention,
Fig. 1 is an elevation of a machine to which our improvements are applied.
Figs. 2 and 3 are elevations of the winding or covering fliers.
Figs. 2 and 3 are views presenting details of the same.
Fig. 4 is a view, partly in section, of the winding or feed drum and its clutch
connections.
Figs. 5 and 6 are views representing details of the same.
Fig. 7 is a diagram of the electrical connections.
Fig. 8 represents a convenient form of belt shipper and releasing devices, and
Figs. 9 and 10 present details of the flier and spool.
Upon a suitable frame-work A, are mounted the various parts of the machine.
Upon the bed piece A¹ thereof are supported the covering or wrapping fliers B, B',
of which we have shown two, though more than that number or only one may be
employed, according to the number of plies or layers with which it is desired to cover
the wire or other core. These fliers are of similar and ordinary construction, except
as hereinafter pointed out, and a description of the general construction of one will
suffice for all. A hollow shaft b, mounted to rotate in bearings 62 and provided with
a driving pulley 3, carries at the end thereof a head or frame 64, consisting of the
stretcher, and the detachable yoke piece 6. The head is adapted to carry, pre-
ferably upon a hollow spindle 6, a spool C, containing the material with which the
core is to be covered, said spool being mounted to rotate on the spindle with a slight
frictional resistance in order that the thread may be drawn off freely and yet be
under a slight tension for a purpose to be described.
In order to provide a suitable guide for the thread, which passes from the spool
through an eye 68, in or on an arm of the yoke piece, and to protect the thread from
the rush of air incident to the rapid rotation of the flier, the yoke piece is formed
with a groove 6, in which the thread, lies until it reaches the eye 610, where it is
wrapped or wound upon the core.
The spools upon which the covering material is wound preferably are slotted from
center to circumference, as shown at c, in order that each spool, as it is emptied, may
be removed readily from the machine and from the core. In commencing to cover a
wire we prefer to pass the wire through several of these spools beyond each flier, so
that when one spool is emptied and removed another may be put in its place without
severing the wire.
When two fliers are employed they are driven preferably in opposite directions, and

page_text: to effect this, the flier B, may be driven by a straight belt 620, and the flier B¹ by a
crossed belt 621, from a driving shaft D, provided with pulleys d.
The core is drawn through the fliers by a feed or winding drum E, which may be
driven from the shaft D, through pulleys d¹ d¹, belt d², shaft F, worm f, and worm
wheel e, upon the shaft of the drum. It is necessary that the feed be stopped instantly
upon the breaking of a covering thread, and we therefore provide an improved clutch
mechanism, whereby the drum may be released instantly and by a slight force from
its actuating mechanism. Upon a stud G, secured to a suitable support is mounted
to rotate a sleeve-shaft. H, to which is secured the worm wheel e. The drum E, is
mounted loosely upon the sleeve-shaft H, and has the end of its hub e', substantially
in the plane of the end of the sleeve-shaft H. The end of said hub and the end of
said shaft are formed with registering or corresponding notches or slots h² ² and e² e².
Opposite the slotted ends of the shaft and hub is supported to rotate and to move
toward and from said shaft and hub a plate I, formed with projections i, registering or
corresponding with and adapted. to enter the slots of the hub and shaft and thereby to
lock the drum to the shaft, and compel it to rotate therewith, or, when moved back,
to release the drum from said shaft. The plate is supported preferably upon a pin or
spindle, g, which may be an extension of the stud G, and is pressed toward the shaft
and drum by a spring G¹.
Any means may be employed for moving this plate away from the shaft, but we
prefer to make the plate the armature of an electro-magnet K, which is energized
when the thread or covering material breaks or fails to cover the core completely.
To provide for the stopping of the flier and feed when the thread or covering
material breaks or fails, we have found that certain electro-magnetic devices give the
best results as to delicacy, certainty and promptness.
In the case of the flier B, which wraps the first layer upon the core, and when
wire is the core, we insulatingly fasten upon the yoke 6 a contact point O' which is
adapted to rest normally upon the wire just after it has been covered, but which comes
in contact with the wire itself when the thread breaks or runs out, or fails to cover
completely the core. This contact point is connected by an insulated wire 02 with an
insulated ring conductor 03, on the hub of the head in contact with which is a con-
ductor 0. A second contact point 0³ rests upon the bare wire before it reaches the
covering point. From one of these two contact points to the other extends a con-
ductor O, passing through a battery 07, the magnet K and a magnet L, whose
armature controls a belt shipper or stopping lever whereby the driving power of the
machine may be disconnected. In case of fliers subsequent to the first, when
more than one flier is employed, in case the core is not itself a conductor it is
impracticable to employ contact points adapted to complete the circuit through the
wire, and it becomes necessary to depend upon the tension of the thread or covering
material to separate two contact points, so that upon the failure of the thread the
circuit is completed and the magnets energized. Therefore, we have provided the
devices shown as applied to the flier B¹. We insulatingly secure to the yoke a spring
contact point p
and connect the same to the insulated ring 0³, by an insulated con-
ductor 0, as before. The second contact point, however, is the yoke itself or a
point, which may be formed thereon. The flier itself then becomes a part of the
conductor and we provide upon the shaft thereof a contact ring, in contact with which
(or, it might be, with the shaft itself) is the end of a conductor 06 which passes
through the battery and magnets as before. In order that the contact point p, may
be kept normally from contact with the yoke, there are provided upon the yoke two
guide eyes 6 and 6, by which the thread is caused to hold the spring contact point
away from the yoke so long as the thread remains unbroken.
The belt shipper or stopping rod or lever controlled by the magnet L, may be of
any ordinary construction, and we have shown one such form. Upon the shaft D, are
placed a fast and a. loose pulley d do, the belt de being thrown from. the fast to the
loose by a spring actuated shipper rod d', which is held normally against the action of
the spring by a finger attached to the armature l' of the magnet. The armature

page_text: and, finger are pressed toward the rod by a spring 12, and the finger engages a
notch d in the rod. It is evident that if the fliers were driven by a dynamo the
magnet L, or another magnet might be made to actuate a switch or stopping lever in
the circuit of the dynamos and so break the circuit and stop the dynamo.
.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is:
1. In combination, a shaft, having its end slotted, a pulley mounted upon said
shaft, and having one end of its hub substantially in the plane of the end of the shaft
and slotted to correspond therewith, a plate having projections adapted to enter the
slots of both pulley and shaft, whereby the pulley may be engaged with or disengaged
from said shaft, and a support upon which said plate is free to rotate, substantially as
shown and described.
2. The combination with an electric circuit, including a generator, a magnet and
contact points normally separated, and means to close the circuit, of a shaft having its
end slotted, a pulley mounted thereon having one end of its hub slotted to correspond
with the slots of the shaft, a plate having projections adapted to enter the slots of both
pulley and shaft, said plate constituting the armature of the magnet, a support upon
which said plate is rotatably mounted, and a spring acting normally to press said plate
against the end of the shaft and hub and adapted to yield when the circuit is
completed and the magnet energized to permit the removal of the projections from
the slots and the disengagement of the pulley from the shaft, substantially as shown
and described.
3. The combination with a flier, and an electric circuit including a magnet and
contact points adapted to be held apart by the tension of the thread, of an armature
for said magnet, driving mechanism, means for throwing said driving mechanism out
of operation, and connections therefrom to the armature, whereby on the failure of the
thread and the closing of the circuit, the armature is attracted and the machine is
stopped, substantially as shown and described.
4. In combination, a flier, an insulated conducting ring carried thereby, an
insulated contact point also carried by said flier and electrically connected with said
ring and adapted to be held from contact with the flier by the tension of a thread
carried by the flier, a generator, a magnet, electrical connections from the ring to
the flier through the generator and the magnet, an armature, mechanism for driving
the flier, means for disconnecting said driving mechanism, and connections therefrom
to the armature, whereby, on the failure of the thread and the closing of the circuit,
the armature is attracted and the driving mechanism is disconnected, substantially as
shown and described.
5. In a machine for covering wire, the combination with a flier adapted to carry the
covering thread or material, and an electric circuit including a generator, a magnet,
and contact points upon the flier adapted to be held apart by the tension of the thread,
of a winding drum, a shaft upon which it is mounted, the ends of the shaft and of the
hub of the drum being in substantially the same plane and correspondingly slotted,
and a plate rotatably supported and having projections adapted to engage the slots of
the drum and its shaft, said plate constituting the armature of the magnet, substantially
as shown and described.
6. The combination with means for covering a wire and driving means, of.
devices providing for throwing the driving means into and out of operation,
an electric circuit, including a generator, a magnet, and contact points, one of
which is adapted to rest upon the wire after it is covered, and the other to
rest upon the bare wire, an armature for the magnet and means intermediate said
armature and said provisions for throwing the driving means into and out of
operation, whereby, upon failure of the covering material to cover completely the
wire, the circuit is completed through the wire and the machine is stopped,
substantially as shown and described.
7. In a machine for covering wire, &c., the combination with a flier adapted to

page_text: carry the covering thread or material, and an electric circuit including a generator, a
magnet, and contact points upon the flier adapted to be held apart by the tension of
the thread, of an armature for said magnet, driving mechanism including fast and
loose pulleys, a spring actuated belt shifter and a detent carried by the armature and
adapted to engage the shifter and hold the belt upon the fast pulley, whereby, on the
failure of the thread the armature is attracted and the belt shifter released, substantially
as shown and described.
Dated thin 14th ST
1000
JOHN SCOTT.
FRANK ELMER DAVIS.
H. B. Barlow,
17, St. Ann's Square, Manchester; Agent for Applicants.