Year: 1885

page_text: I, PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents do hereby declare the nature
of this invention to be as follows:-
This invention relates to the preparation of insulated wire and to the apparatus
employed in manufacturing it and to wind it into electro magnets or like devices.
The conductors or wires of the coils of electro-magnets or other like devices have
heretofore been insulated by a covering of silk cotton or other fibrous materials
Electrical conductors or wires have also been insulated for various purposes by
paper or bands of textile material wound around them. It is desirable that the
insulating covering of the wires of electro magnet coils should be very thin, in
order that in a coil of a given number of convolutions or layers, the wires may be
as near the centre as possible. Textile fabrics or threads of fibrous material when
used for insulating these wires may be wound very tightly so that the thickness of
the covering is kept within practicable limits If paper is used for this purpose it
is necessary to use very thin strips as its slight tensile strength does not admit of
its being wound very tightly Paper, when used under ordinary conditions,
however makes but an indifferent insulator for electrical coils mainly for the
reason that it is very liable to be ruptured if the wire is bent. The object is to
utilize paper for this purpose and to produce a conductor or wire insulated there-
with, and capable of being bent or wound without injury To this end a wire is
coated with an insulating compound which becomes a liquid when hot and which
does not lose entirely its viscosity when cool, and upon this is wound a strip of
thin paper. The compound which I use for this purpose is prepared by mixing
linseed oil boiled down until it is very thick when cold, with a resinous substance
such as crude turpentine which has been concentrated, or boiled down, but not so
far as to become hard on cooling although if it does, viscosity may be restored by

page_text: a larger admixture of the oil. These two substances when combined in proportions
of ninety parts by weight of turpentine, to ten of linseed oil, or thereabouts form
a very adhesive compound which when cold is permanently viscous or non-drying.
The paper used with this compound should not be more than 00 3 in. in thickness,
and may be much less. It is applied or wound spirally in the form of a narrow
strip. Manilla paper is preferable, as it is stronger than most others and readily
absorbs the insulating material A paper covering or a wire thus coated becomes
saturated with the compound and is little apt to crack or break when the wire is
bent. A covering or coating may be thus made which is much thinner than that
composed of cotton yarn or spun silk, and its specific insulation is much higher.
The plan of insulation which is berein described is especially useful in the
manufacture of coils, but if it is desired to use the wire for the insulation of
electrical line wires or those used for circuits, from any generator to devices for
utilizing the current such as the wires carried in underground conduits, attached to
walls or ceilings or suspended from poles, it will be necessary to secure a coating
for such wires of very high specific insulation, and which at the same time shall
be cheap and durable and not lessen in any degree their flexibility.
To accomplish this, the wire is coated with the permanently viscous or non drying
compound hereinbefore described; around it is then wound spirally a strip or band
of paper, and over this is applied a second coat of the non drying compound.
The object in doing this is to secure the advantages of the insulating qualities
of the compound and those afforded by the presence in the insulating coating of a
fibrous material and also to prevent the coating from becoming hard and dry and
cracking. The compound which is employed is one that is brought by moderate
heat into a comparatively liquid state so that it may be applied to the wire by
brushes or rollers, but which on cooling does not become hard, but retains to a
slight degree its plasticity or viscous qualities. Such a compound is obtained by
mixing Trinidad or other asphalte with ten per cent of its weight of the residuum
from the distillation of petroleum or as bereinbefore described, of boiled linseed oil
and crude turpentine, boiled down until it becomes semi-solid when cool. A wire
is coated with either of these compounds and then a strip or ribbon of paper is
wound around it while the compound is still hot and soft Over the paper is
then applied a second coating of the plastic compound This produces a conductor
perfectly insulated and ready to be used in any of the ways above referred to.
It may be further insulated when so desired, by one or more additional layers of
paper and coats of the plastic compound herein described, or it may be protected
by an exterior wrapping or jacket of braided twine. The presence of the material
described on both sides of the paper keeps the latter soft and prevents it from
cracking. The paper on the other hand secures a perfect adhesion of the insulating
coating to the wire. These are both qualities of great importance in line wires
and are not afforded by paper when applied in the usual manner nor so cheaply
The
obtained by the use of any other insulating materials of which I am aware.
braided twine is not however an essential part of the invention.
If it is desired, an insulated metallic sheath or screen forming a medium for
intercepting induced currents from other lines in the immediate vicinity of the
said conductor may be employed, and where this is necessary there may be
employed as a cover for the wire or conductor, paper, which in the form of a
strip or ribbon is wound spirally upon the wire which previously has been treated
as hereinbefore described Upon the exterior of the paper covering is applied a
sheathing or coating of metal which is in turn covered by a coating that insulates
and protects it For instance an ordinary copper wire of required diameter is
covered with paper in the manner hereinbefore described, over this may then be
applied a second coating of adhesive material, though this may be omitted, if
desired, next will come a metal coating, sheathing or screen, for which powdered
metal or metal foil may be used as for instance a strip or ribbon of tin foil wound
spirally around the covered wire. Around the metal sheathing is laid a covering
of insulating material preferably of paper wound spirally in an opposite direction

page_text: to the metal strip and caused to adhere thereto by an intervening adhesive
substance.
In lieu of the paper, cotton tape or the like may be used.
When the metallic foil is thus wound with overlapping edges and is compressed
by the outer insulating tape, it becomes a continuous conducting sheath insulated
from the wire which it surrounds, and serves as a screen for intercepting induced
currents when the wire is used with others in close proximity thereto. In some
cases the exterior insulating strip may be omitted and the metal sheath be simply
varnished, so as to protect and insulate the same, but it is generally preferred to
wind the outer strip around it. As above stated as the equivalent of the metal
foil, a metallic powder may be used such as powdered copper deposited upon the inner
covering and held in place by the outer strip, the object in either case being to obtain
by the use of the metal protection against electrical induction, rather than abrasion or
wear. By combining in the manner described, a spirally wound covering of paper
with a similarly applied sheathing or screen of metal, the diameter of the wire is
but slightly increased, and a protected conductor obtained at very low cost, qualities
particularly valuable in underground systems where a large number of wires are
confined to a very limited space. When it is desired to wind the wire into bobbins
or helices of electro magnets the apparatus for this purpose is arranged so that the
winding of a number of bobbins may be effected simultaneously by one operator,
and the coils or convolutions formed more evenly than by appliances previously
known and used; and to accomplish this purpose, the apparatus combines means
for delivering and winding the wire upon a core, devices for adjusting the same to
varying lengths of core or bobbin and devices for adapting it to the winding of
wires of different sizes or diameters. The operative portions of the apparatus are
preferably mounted on a frame similar to those used for lathes.
A support on this frame carries the reel on which the wire to be used is wound;
the machine having a mandril or core of suitable kind around which the bobbin or
helix is wound.
A system of gears transmits motion from the main spindle to a shaft; these are
ordinary variable gears, or in other words gears that may be replaced by others
that occupy the same space but which vary the rate of rotation transmitted. On
the shaft is a worm that meshes with a gear wheel connected with a heart cam.
By this connection the cam is slowly revolved. In suitable guides on the frame of
the machine is a sliding bar from which a pin extends into the slot of the cam.
Above or near the mandril or core is a second or upper bar the counterpart of
the lower bar.
The two are connected by links and a lever. The latter passes through a clamp
to which it may be held by tightening a hand nut. The clamp is pivoted to a slide
made adjustable in guides or ways by a screw This pivot forms the fulcrum of the
lever before referred to.
Secured to the upper bar by a clamping screw passing through a slot, is a plate
which has a projection entering a groove in said bar. A slotted plate is held by a
screw to the upper edge of the first plate which is provided with a ledge to form a
sufficient bearing surface. The slotted plate extends over the second bar and
carries at its end a removable bushing or guide. This device serves as a guide for
the wire as it comes from the main reel of wire, and lays it in proper manner
around the core or mandril.
The manner of attachment to the bar of the guide, permits it to be adjusted in
position upon said bar and the connection of the first plate to the slotted plate
permits a transverse adjustment which may often prove necessary or desirable.
The bushing is removable and is changed for wires of different diameter. The
method of using, and the operation of the machine are as follows.
The fulcrum of the lever before mentioned as connecting the upper and lower
bar is first adjusted to impart a movement to the upper bur exactly equal to the
length of the bobbin which it is desired to form The proper size of pulley for the
speed required is then selected and gears inserted that will impart the proper

page_text: relative movement to the heart cam and the guide for the feed that the diameter of
the wire to be wound requires. The wire is then passed through the bushing and
the winding started. The movement imparted by the heart cam to the lower bar
and from thence to upper bar carries the wire back and forth in exact proportion
to the convolutions laid or wound. Coils, helices or bobbins may in this manner
be evenly, rapidly and automatically wound, the only manual assistance required
being in starting and stopping the machine The latter may be readily effected
automatically in many well known ways. The core may be the solid core of an
ordinary magnet or the spool or shell of a helix or any similar device upon which
coils are usually formed.
Heretofore, machines have been constructed for dividing a web of paper into
strips, but in such as are constructed or adapted for cutting strips sufficiently
narrow to be wound spirally upon an ordinary underground telegraph wire or a
magnet wire, the paper is liable to be torn so that continuous rolls of the proper
size and quality for the economical insulation of fine wires are difficult to obtain.
Therefore in order to provide paper strips or ribbons suitable for the above uses it
has been found necessary to use mechanism by means of which can be readily cut
into very narrow strips and wound in continuous rolls, a web of paper of any
thickness. The various parts of the machine are mounted in a suitable frame work
in which is a rocking frame, supported on shafts and consisting of side plates held
together by tie rods. In suitable journal boxes mounted upon one end of the main
frame and near the base of the same is a shaft, upon which is wound the roll of
paper.
In the rocking frame are journalled a number of cylinders or rolls. The web of
paper is carried alternately over and under these cylinders to the cutting mechanism
and by means of a wheel or pulley, and a brake shoe and a lever, the requisite
tension is secured.
After passing through the cutters, the longitudinally divided web is carried over
a cylinder in bearings on the end of the rocking frame and wound upon a shaft on
the main frame. The cylinder rests upon the paper as it is wound around this
shaft, and serves, both to form a compact and even roll, and to support the weight
of the cutting mechanism. The weight of this latter is counterbalanced by weights,
carried by rods arranged to slide on the horizontal portion of the rocking frame.
As a means for adjusting the tension of the web, a wheel or disc is fastened to the
shaft before referred to, located near the base of the main frame, and with this is
combined a brake shoe carried by a lever pivoted to the main frame, and held in
the desired position by a rack.
This arrangement also secures the roll of paper from sudden movement in either
direction.
With this shaft and roll are also combined means for imparting thereto a longi-
tudinal movement by which it is adjusted to deliver the web evenly.
For this purpose is used a rod with a threaded portion turning in a nut and pro-
vided with a hand wheel easily accessible to an operator from the forward part of
the machine This rod is properly connected with a bell crank lever which in turn
connects with the bearing of the shaft last referred to, by a link. The bearing is
capable of movement in line with this shaft, and carries the latter with it. Both
the shaft upon which the divided paper is wound, and this shaft (upon which the
undivided roll of paper is first placed) are removable at will, the bearings being
made with upper hinged sections that may be lifted by removing a pin. The
cutters used, are discs having shoulders covered with a yielding material such as
leather. The cutters are arranged in pairs, each disc being supported by an arm
secured to a shaft and placed so that the paper in being drawn between them is
compressed by the shoulders and imparts a rotary motion to the discs.
The web after passing through the first row or series of cutters is drawn through
a second row or series placed so as to sub-divide the strips into equal divisions.
In practice it has been found that the strips formed by the first cutters have not
the requisite rigidity to maintain them in proper condition for the second, and that

page_text: they are apt to be unevenly cut or folded between the two rows of cutters. A guide
or series of guides are therefore employed and through these are drawn the divided
web. For the guide are employed flexible plates secured to bars from which arms
extend that are connected by a spiral spring or equivalent device at one or at both
ends of the plates. The divided web after leaving the plates is drawn through the
cutters and thus sub-divided. The method of operating the device which has been
described, and the functions of the several parts will now be described in detail.
A roll of paper is first wound on a shaft and carried alternately over and under the
rolls to the cylinder During this operation the upper cutting discs are raised if so
desired By means of the hand wheel the position of the roll of paper is adjusted
so that the web travels evenly to the cylinder. The requisite tension is then
obtained by the adjustment of the lever which by the specified means is then
locked. A roller is inserted in its bearings to smooth out the web before it passes
between the cutters and the latter are then brought together for operation. The
weighted bars are also adjusted to produce the requisite pressure of the cylinder
upon the divided web as it is wound onto its shaft.
The subsequent operation of the machine is a continuous and even one, the strips
formed by the cutters being wound upon the shaft smoothly and evenly.
When the latter is full, or when the roll has all been drawn off the full shaft is
taken off and the strips rolled off on separate spools or used directly from the roll
as occasion may render necessary. I am aware that machines for dividing a web
of paper have heretofore been constructed in which the web is carried from a
delivering wheel over and under tension rolls and through cutters to a receiving or
winding reel the tension rolls and cutters being carried by a pivoted frame.
7
LOOK
COMPLETE SPECIFICATION. .
Improvements in and Connected with Electro Magnets and
Conductors.
I, PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents do hereby declare the nature
of this invention (a communication to me from abroad by Henry Curtis Spalding
of Boston, Massachusetts United States of America, Electrician) 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 the preparation of insulated wire, and to the apparatus
employed in manufacturing it, and to wind it into electro magnets or like devices.
The invention consists of the arrangements and combinations of parts as herein-
after set forth, reference being made to the accompanying drawings, which form
part of this specification.

page_text: >
The conductors or wires of the coils of electro magnets or othe like devices have
heretofore been insulated by a covering of silk, cotton, or other fibrous materials.
Electrical conductors or wires have also been insulated for various purposes by
paper or bands of textile material wound around them. It is desirable that the
insulating covering of the wires of electro magnet coils should be very thin, in
order that in a coil of a given number of convolutions or layers the wires may be
as near the centre as possible.
Textile fabrics or threads of fibrous material when used for insulating these
wires, may be wound very tightly so that the thickness of the covering is kept
within practicable limits. If paper is used for this purpose it is necessary to use
very thin strips, as its slight tensile strength does not admit of its being wound
very tightly. Paper when used under ordinary conditions, however, makes but an
indifferent insulator for electrical coils, mainly for the reason that it is very liable
to be ruptured if the wire is bent. The object is to utilize paper for this purpose
and to produce a conductor or wire insulated therewith, and capable of being bent
or wound without injury. To this end I coat a wire with an insulating compound
which becomes a liquid when hot and which does not lose entirely its viscosity
when cool, and upon this I wind a strip of thin paper. The compound which
I use for this purpose I prepare by mixing linseed oil boiled down until it is very
thick when cold, with a resinous substance such as crude turpentine which has
been concentrated or boiled down, but not so far as to become hard on cooling,
although if it does, viscosity may be restored by a larger admixture of the oil.
These two substances when combined in proportions of ninety parts by weight of
turpentine, to ten of linseed oil, or thereabouts, form a very adhesive compound
which when cold is permanently viscous or non-drying. The paper used with this
compound should not be more than, 003 in. in thickness and may be much less.
It is applied or wound spirally in the form of a narrow strip. Manilla paper is
préferable, as it is stronger than most others and readily absorbs the insulating
material. A paper covering of a wire thus coated becomes saturated with the
compound and is little apt to crack or break when the wire is bent. A covering
or coating may be thus made which is much thinner than that composed of cotton
yarn or spun silk and its specific insulation is much higher. In the drawing
hereto annexed-
Fig. 1 is a view in elevation of an electro magnet wound with coils insulated in
this manner.
Fig. 2 is an enlarged view of a short length of the wire with its covering of
paper.
a designates the wire and a¹ the spiral wrapping of paper, A, the case of the
magnet and A¹ the spool upon which the wire is wound. In other applications
I have described wires or conductors insulated by paper, which, to better adapt it
for use as an insulator in electric cables is specially prepared.
The plan of insulation which is herein described is especially useful in the
manufacture of coils. It is therefore illustrated as applied to this purpose, but if
it is desired to use the wire for the insulation of electrical line wires or those used
for circuits from any generator to devices for utilizing the current, such as the
wires carried in underground conduits, attached to walls or ceilings or suspended
from poles it will be necessary to secure a coating for such wires of very high
specific insulation, and which at the same time shall be cheap and durable and not
lessen in any degree their flexibility.
To accomplish this I coat the wire with the permanently viscous or non-drying
compound herein before described. I then wind around it spirally a strip or band
of paper, and over this I apply a second coat of the non drying compound.
My object in doing this is to secure the advantages of the insulating qualities of
the compound and those afforded by the presence in the insulating coating of a
fibrous material and also to prevent the coating from becoming hard and dry and
cracking.

page_text: The compound which is employed is one that is brought by moderate heat into
a comparatively liquid state so that it may be applied to the wire by brushes or
rollers but which on cooling does not become hard but retains to a slight degree its
plasticity or viscous qualities. Such a compound is obtained by mixing Trinidad
or other asphalt with ten per cent of its weight of the residuum from the
distillation of petroleum or as hereinbefore described, of boiled linseed oil and
crude turpentine, boiled down until it becomes semi-solid when cool. I coat a
wire with either of these compounds and a strip or ribbon of paper is wound upon
it while the compound is still hot and soft. Over the paper is then applied a
second coating of the plastic compound.
This produces a conductor perfectly insulated and ready to be used in any of
the ways above referred to. It may be further insulated when so desired by one
or more additional layers of paper and coats of the plastic compound herein
described, or it may be protected by an exterior wrapping or jacket of braided
twine, as shown in Fig. 3. The presence of the material described on both sides
of the paper keeps the latter soft and prevents it from cracking. The paper on the
other hand secures a perfect adhesion of the insulating coating to the wire.
These are both qualities of great importance in line wires and are not afforded
by paper when applied in the usual manner, nor so cheaply obtained by the use of
any other insulating materials of which I am aware.
In the accompanying drawing a, is the wire, a³, the coating of viscous insulating
material, a¹, the spiral wrapping of paper, b, the second or outer coating of viscous
material and 6 a protective jacket of braided twine.
The latter is not however an essential part of the invention. If it is desired,
an insulated metallic sheath or screen forming a medium for intercepting induced
currents from other lines in the immediate vicinity of the said conductor may be
employed, and where this is necessary there may be employed as a cover for the
wire or conductor, paper, which in the form of a strip or ribbon is wound spirally
upon the wire which previously has been treated as hereinbefore described.
Upon the exterior of the paper covering is applied a sheathing or coating of
metal which is in turn covered by a coating that insulates and protects it. In the
accompanying drawing a conductor insulated and protected in the manner described
is shown in the successive stages of its manufacture. a, is an ordinary copper
wire of required diameter covered with paper in the manner hereinbefore described.
Fig. 4 represents a section of coated wire with a ribbon of paper partially
wound thereon, the relation of these elements being better exhibited in Figs. 5, 6
and 7 which show in enlarged cross section the wire a, the coating a and the
paper strip a¹. Over this may then be applied a second coating of adhesive
material shown in enlarged cross section in Fig. 6, though this may be omitted if
desired. I next apply a metal coating sheathing or screen, for which powdered
metal or metal foil may be used, the latter, and the manner of its application being
illustrated in Fig. 7, wherein a strip or ribbon of tin foil is wound spirally around
the covered wire.
Around the metal sheathing is laid a covering of insulating material o¹,
preferably of paper wound spirally in an opposite direction to the metal strip and
caused to adhere thereto by an intervening adhesive substance. In lieu of the
paper, cotton, tape or the like may be used. When the metallic foil is thus wound
with overlapping edges and is compressed by the outer insulating tape, it becomes
a continuous conducting sheath insulated from the wire which it surrounds and
serves as a screen for intercepting induced currents when the wire is used with
others in close proximity thereto. The relations of the several layers are shown in
Fig. 7, a, being the wire, a¹ the inner fibrous cover, c, the metallic sheath, and c¹
the exterior winding of paper. In some cases I omit the exterior insulating strip
and simply varnish the metal sheath so as to protect and insulate the same, but
I generally prefer to wind the outer strip around it. As above stated I regard as
the equivalent of the metal foil a metallic powder such as powdered copper
deposited upon the inner covering and held in place by the outer strip, the object

page_text: well known ways. The core G, may be the solid core of an ordinary magnet or
the spool or shell of a helix or any similar device upon which coils are usually
formed. Heretofore machines have been constructed for dividing a web of paper
into strips, but in such as are constructed or adapted for cutting strips sufficiently
narrow to be wound spirally upon an ordinary underground telegraph wire or a
magnet wire, the paper is liable to be torn, so that continuous rolls of the proper
size and quality for the economical insulation of fine wires are difficult to obtain.
Therefore in order to provide paper strips or ribbons suitable for the above uses,
I have found it necessary to use mechanism by means of which it can be readily
cut into very narrow strips and wound in continuous rolls to form a web of paper
of any thickness and such apparatus is illustrated in―
Fig. 16 which is a side view in elevation.
Fig. 17 is a plan view of the same.
Figs. 18, 19 and 20 are details in plan of the cutting devices.
Fig. 21 is a detail in elevation of a guide for use in conjunction with the cutters.
Similar letters of reference indicate corresponding parts in all the figures.
J, is the frame work supporting the operative portions of the device and
consisting of two plates held together by tie rods J¹; K is a rocking frame
supported on the shafts K' and consisting of side plates held together by
tie rods k.
In journal boxes J' mounted upon one end of the frame J and near the base of
the same is a shaft L upon which is wound the roll of paper L¹.
In frame K are journaled a number of cylinders or rolls M, in substantially the
relative positions shown in Fig. 16. The web of paper L' is carried alternately
over and under these cylinders to the cutting mechanism, and by means of the
wheel or pulley N, and the brake shoe of the lever N¹, the requisite tension is
secured. After passing through the cutters, the longitudinally divided web is
carried over a cylinder O, in bearings O¹ on the end of frame K, and wound upon
a shaft 7 in bearings on the frame J. The cylinder O rests upon the paper as it
is wound around this shaft and serves both to form a compact and even roll, and
to support the weight of the cutting mechanism. The weight of this latter is
counterbalanced by weights P, carried by rods P¹, arranged to slide on the
horizontal portion of the frame K. As a means for adjusting the tension of the
web L, a wheel or disc N, is fastened to the shaft L, and with this is combined a
brake shoe N' carried by lever N¹, pivoted to frame J and held in the desired
position by a rack m. This arrangement also secures the roll L' from sudden
movement in either direction. With the shaft L, and roll L¹ are also combined
means for imparting thereto a longitudinal movement by which it is adjusted to
deliver the web evenly. For this purpose is used a rod Q with a threaded portion
turning in a nut R, and provided with a hand wheel R¹, easily accessible to an
operator for the forward part of the machine. The rod Q, is properly connected
with a bell crank lever p, which in turn connects with the bearing J of shaft L by
a link p'. The bearing is capable of movement in line with the shaft L, and
carries the latter with it. Both the shaft and the shaft L are removable at will,
the bearings being made with upper binged sections that may be lifted by
removing a pin such as q. The cutters used are discs r or having shoulders
covered with a yielding material such as leather. The cutters are arranged in
pairs each disc being supported by an arm 8 or 8 secured to a shaft S or S¹ and
placed so that the paper in being drawn between them is compressed by the
shoulders and imparts a rotary motion to the discs. The web after passing through
the first row or series of cutters r, is drawn through a second row or series +1,
placed so as to subdivide the strips into equal divisions. In practice I have found
that the strips formed by the first cutters have not the requisite rigidity to
maintain them in proper condition for the second and that they are apt to be
unevenly cut or folded, between the two rows of cutters a guide or series of guides
are therefore employed and through these is drawn the divided web. For the
guide are employed flexible plates t, t¹, secured to bars t, 3 from which arms

page_text: extend that are connected by a spiral spring u, or equivalent device, at one or at
both ends of the plates. The divided web after leaving the plates t, t¹ is drawn
through the cutters r and thus subdivided. The method of operating the device
and the functions of the several parts will be now described in detail. A roll of
paper is first wound on the shaft L and carried alternately over and under the
rolls M, to the roller O. During this operation the upper cutting discs are raised
if so desired. By means of the hand wheel R, the position of the roll of paper L¹
is adjusted so that the web travels evenly to the roller O. The requisite tension
is then obtained by the adjustment of lever N which by the specified means is
then locked. The roller is inserted in its bearings to smooth out the web before it
passes between the cutters and the latter are then brought together for operation.
The weighted bars P1 are also adjusted to produce the requisite pressure of the
roll O upon the divided web as it is wound on to the shaft l. The subsequent
operation of the machine is a continuous and even one, the strips formed by the
cutters being wound upon the shaft 1 smoothly and evenly. When the latter is
full or when the roll has all been drawn off the shaft is taken off and the strips
rolled off on separate spools or used directly from the roll as occasion may render
necessary. I am aware that machines for dividing a web of paper have heretofore
been constructed in which the web is carried from a delivering wheel over and
under tension rolls and through cutters to a receiving or winding reel, the tension
rolls and cutters being carried by a pivoted frame, and this I do not claim. I do
not however limit myself to the specific construction of the parts hereinafter
enumerated, as the subject of the present invention, though I have described the
forms which have been found best adapted to the purpose.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed as communicated
to me by my foreign correspondent, I declare that what I claim is :—
1. An electro magnet coil the wire of which is insulated by a spiral wrapping of
paper substantially as and for the purposes set forth.
2. The combination with a core or spool of a coil wound thereon, the wire of
which is insulated by a coating of viscous insulating material and a spirally wound
wrapping of paper, as described.
3. The combination with a core or spool of a coil wound thereon the wire of
which is insulated by a coating of a compound of concentrated crude turpentine or
rosin and boiled linseed oil and a spirally wound wrapping of paper as set forth.
4. The combination with an electrical conductor, of a coating of a permanently
viscous or non drying insulating material, a wrapping of paper and an exterior
coating of the viscous or non drying material substantially as herein set forth.
5. The combination with an electrical conductor of a coating of viscous insulating
material, composed of asphalt and linseed oil, or its equivalent, a wrapping of
spirally wound paper, and an exterior coating of the viscous material as herein
Bet forth.
6. The combination of the wire, the coating of adhesive material, the spirally
wound strip of paper, the spirally wound strip of metal foil and the insulating
cover, all as described.
7. The wire a, coating a³ of adhesive material and the strips of paper a², c¹, in
combination with the metallic sheath or screen intervening between said strips
substantially as and for the purpose set forth.
8. The combination of the electrical conducting wire, an insulating coating
therefor, consisting of adhesive material and spirally wound paper consecutively
applied, an induction screen of metal surrounding the insulated conductor and an
outer layer of insulating material all as described.
9. In a wire winding mechanism the combination with the spool or core for
receiving the wire, of a guide for directing the wire, means for reciprocating the
guide, and means for adjusting and regulating the extent of movement of the same,
all as set forth,

page_text: 10. In a wire winding mechanism the combination with the core or spool for
receiving the wire, of a guide for directing the wire, means for varying the feed or
relative movement of the core and guide, and means for regulating or limiting the
range of movement of the guide, all as set forth.
11. In a wire winding mechanism the combination with the core or spool for
receiving the wire, a guide for varying the feed, or relative movements of the core
and guide, means for limiting the motion of the guide and means for adjusting its
position relatively to the core, all as set forth.
12. The combination with the pulleys B, and the core or spool G, of the heart
cam E, bars F and bars F¹ and the connecting lever f having an adjustable
fulcrum and guide, these parts being constructed and combined in substantially
the manner specified.
13. The combination of the pivoted bar F, the guide bar F1, connecting lever f,
and links e, e¹, and an adjustable fulcrum for the lever as set forth.
14. The combination with the pulleys B, and core G, of the variable gears C,
heart cam E, guide ¹ and intermediate adjustable connections, substantially as
herein set forth.
15. In a machine for dividing a web of paper the combination with means for
delivering and means for receiving and reeling the web, of two rows or series of
cutters for dividing and subdividing the web and a guide or guides between said
rows or series of cutters substantially as and for the purpose set forth.
16. In a machine of the kind described the combination with the two rows or
series of cutters of the flexible metal plates and springs located between the two
series of cutters and forming a guide or guides for the divided web substantially
as herein described.
17. In a machine of the kind described the combination with the delivery reel
of the bell crank lever, the link connection to or with the bearings of the delivery
reel and the threaded bar or rod for adjusting the position of the bushing and reel
as and for the purpose set forth.
The noth das of Jun 1000