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Патент USA US2114287

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April 19, 1938.
J. F. 'CULLIN
2,114,287
MACHINE FOR WINDING ARMATURE COILS
Y
Filed Dec. 28, 1936
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April 19, 1938.
2,114,287 I
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MACHINE FOR wmnm'e ARMATURB COILS
Filed Dec. 28, 1936'
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‘J. F. CULLIN
MACHINE FOR WINDING ‘ARMATURE COILS
Filed Dec. '28, 1936
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April 19, 1938.
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2,114,287
MACHINE FOR WINDING ARMATURE COILS
Filed Dec. 28, 1936
9 Sheets-Sheet 5
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April 19, 1938.
J. F.‘ CULLIN
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2,114,287
MACHINE FOR WINDING ARMATURE COILS
Filed Dec. 28, 1956
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April '19, 1938‘.
2,114,287
J. F. CULLIN
MACHINE FOR WINDING ARMATURE COILS
Filed Dec. 28,» 1936
9 Sheets-Sheet 7
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April 19, 1938.
2,114,287
J. F. CULLIN
MACHINE FOR WINDING’ ARMATURE COILS
v Filed Dec. 28, 1936
9 Sheets-Sheet 8
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April 19, 1938.
.I F. .CULLIN
2,114,287
MACHINE FOR WINDING ARMATUREVCOILS
Filed Dec. 28, 1956
‘9 Sheets-Sheet 9
2,114,281
Patented Apr. 19,v 1938
UNITED STATES PATENT OFFICE
'
'
'
'
2,114,287
MACHINE FOB WINDING ABMATURE COIILS
Jasper F. Cullin, Detroit, Mich, assignor of one
third to Meyer B. Mervis and one-third to Lon
Mervis, both of Chicago, Ill.~
Application December 28, 1936, Serial No. 117,762
(or. 140-922)
26 Claims.
Fig. 9 is a plan of the'winding mechanism after
a coil has been wound around the form and the
The invention relates to machines for pro
ducing form-wound coils which are adapted to be
inserted into the core of armatures.
-
wire-shearing mechanism in its operative poslé
'
tion.
Fig. 10 is a section on line Ill-l0 of Fig. 9.
The objects of the invention are to provide an
5 improved coil-winding mechanism embodying: a
winding-arm ‘which
Fig. 111s a perspective of the shearing-head
revolves around and winds the wire on the form;
clips or devices adapted to engage the wound coil
while on its form and to hold the convolutions
or anvil illustrating the manner in- which the
' stationary
form
and
a
leading ends of the wires are secured therein after
the previously wound coil has been removed.
Fig. 12 is a perspective of the shearing-head and l0
together for transfer from the winding machine
the cutter illustrating‘ the manner in which the
to the armature core and which can be used to
wire'is looped around.- the head preparatory to
the operation of the cutter-blade to shear the
wires of the completely wound coil from the wires
leading from the winding-arm.
Fig. 13 is a front elevation of the shearing head
hold the coils while they are being assembled with
the armature core; mechanism for synchronizing
the dereeling device for feeding wire with the
15 winding machine; “improved shearing means for
the ends of each coil; readily interchangeable
with the extended ends of the coil laid therein
preparatory to a shearing operation.
Fig.'14 is a section through the shearing-head
and cutter illustrating the manner of shearing
has been wound; improved starting means for the the ends of the wire of a coil which are hooked
winding mechanism; and other objects which ‘to the shearing-head after the coil has been
wound.
.
.
‘I
will be apparent from the detailed description.
Fig. 15 is a perspective of one of the form.
The invention consists in the several novel fea
25 tures which are hereinafter set forth and are sections around which the coil is wound, illus
trating the manner of removing the wound coil
more particularly de?ned by claims at the con
mechanism for- controlling the winding-arm for
use of different gauges and coils of di?erent num;
bers of convolutions of wire; automatic stop
20 means for the winding mechanism when the coil
clusion thereof,
In the drawings:
30
therefrom.
. _ .
v
mechanism,
_ Fig. 1 is aparts
planbeing
of ashown
portion
in of
section.
the
inserted in an armature.
position.
Fig. 21 is a section throughthe form for the
coil and the clip for holding the coil assembled ~
position to grasp the, coil.
Fig. 22 is a similar view illustrating the clip
after it‘ has grasped the coil.
Fig. 6 is a vertical section taken on line He ‘
_
Fig. 7 is a transverse section
the
winding-arm‘ and the controlling mechanism for
‘said arm during a winding operation.
Fig. .8 is a rear elevation of the wire-shearing
mechanism, the switch controlling devices for
controlling the operation of the winding mecha
ni'sm and parts of the gearing for driving the
gg‘winding mechanism.
,
Fig‘. 20_ isv'a section on line 20-20 of Fig. 19.
45 mechanism has been automatically stopped.
_
‘
~ on the movable form-section .being slipped into a
-
a
.
the shearing mechanism.
after the switch has been opened and the winding '
,
‘
Fig. 18 is a section on line l8—l8 of Fig. 17.
Fig. 19 is a plan of the form for the coil and
Fig. _5 isja' similar view illustrating the parts
1.
'
1, illustrating the latch-mechanism for locking
the winding mechanism in its predetermined idle
the cutting-blade being shown in its operative po-'
Fig.
.
- Fig. 17 is a section taken on line l'I-I'I of Fig.
sition and the winding mechanism being stopped.
Fig. 4 is a side elevation of the mechanism for
controlling the electrical switch which controls
the starting and stopping of the motor for driv
ing the winding mechanism, the parts being illus
trated in position assumed near the completion of
40 a coil-winding. operation and immediately pre
ceding the opening 'of the switch to stop the wind
Y
.
tion while the coil is being transferred to and '
Fig. 2 is a vertical section on'line 2—2 of Fig. 1.‘
Fig. 3 is a vertical section on line 3—3 of Fig. 1,
ir'ig mechanism.
_
Fig. 16 isan inverted perspective of the clip
for retaining the wound coil in assembled rela
'
‘
'
Fig. 23 is a section on line 23-23 of Fig. 22.
Fig. 24 is a side elevation of the dueeling
mechanism.
-
.
Fig. 25 is ~a longitudinal section through the
holder for one of the reels of wire.
Fig. 26 is a section on line 26—26 of Fig. 24.
Fig. 2'7 is an elevation of the mechanism for
controlling the operation .of the dereeling mech
anism from the winding mechanism.
Fig. 28 is a longitudinal section of the mecha
_
2
2,1 14,287
nism for controlling the switch for the motor for
driving the dereeling device.
,
Fig. 23 is a section on line 23-—23 of Fig. 28.
The machine exemplifying the invention com
prises a stationary form of the desired shape
dotted lines‘ in Fig. 20 so that the coil of wire
can be slipped oif both of the form-sections
and removed through the gap between them.
The form-sections 3| and 31 are removably se
cured to heads 32, 14, respectively, 50 that form
around which a pair-of wires are parallelly wound,
sections of different contour may be used. This
the form being formed of separable sections,
so the ?nished coil can be removed; a rotatable
construction exemplifies a non-rotatable form,
around which the wire is wound to form a coil,
which is composed of separable sections for per
winding-arm for wrapping the wire drawn from
10 supply reels around the form; mechanism for
mitting the removal of the wound ‘coils.
I
The mechanism for winding the wiresaround
the form comprises a rotatable winding-arm 46
which is ?xed'to revolve with the shaft 33. This
which the winding-arm places the wire from ‘ shaft is journaled in bearings 41 and 43 on the
bed 23. The wires to be wound on the form
15 the wound coil and a cutter-blade adapted to
shear the wire between the wound coil andthe pass through the bore of hollow shaft 33, around
winding-arm and for securing in the cutter-head a roller 43 which is carried by the shaft; thence
the sheared end leading from the winding~arm, around a guide-roller 53 carried by arm 46;
so it will be held therein during the succeeding and thence around a roller 5| mounted in the
distal and offset end of arm 46, from which it
20 Winding operation; devices for automatically
passes to the form 3|, 31. The arm 46 forms
starting the mechanism for driving the winding
arm when the form-sections are brought to-' a loop in the wire between the shaft 33 and
the form, which extends around the cutter-head
gether; mechanism for dereeling the wire pass
ing to‘ the winding-arm from the supply reels; 14. ,Arm 46 is pivotally mounted at 52 on shaft
33 to swinglongitudinally of the shaft to place
25 and. mechanism for controlling the dereeiing
the successive convolutions of the wire evenly
mechanism in accordance with the winding op
automatically stopping the winding-arm upon
the completion of the winding of a coil; cutting
mechanism comprising a head or anvil, around
erations.
.
_
on- the form and to lay the wire in the cutter
are‘ mounted on a bed 23 which is supported
30 on a table 33. A sectional form'has a contour
head at the completion of a winding operation.
The longitudinal pivotal movement of- arm 46
‘is controlled by a rotatable cam 53 which en
corresponding to the shape in which the arma
ture-coil is to be wound, usually with straight,
suitable steps for- swinging the arm back and
The coil-winding and associated mechanisms
parallel sides and semicircular ends (Fig; 6).
This form comprises separable and mating sec
35 tions 3| and 31 (Figs. 20-22). Section 3| is
‘?xed to a head‘ 32 which is ?xed to a tail-stock
33 which is slidable longitudinally in a bracket
34 ?xedly mounted on bed 23. Form-section
31 is stationarily supported on a spindle 33 on
gages a roller on arm 46 and is provided with
forth across the width of the coil and a notch
33.. for controlling the said am to lap the wire
around the head 14. A, spring 55- (Fig. 1) is i
applied to the arm to hold a roller' 54 on- the
arm in contact with cam 53. During the wind
ing of the wire on the form, arm 46 and cam
33 will be rotated at different speeds for relative
rotation, to impart the desired longitudinal
40 the inner end of a hollow drive-shaft 33 which
drives the winding-head. Form-sections 3| and ' movement of the arm, by mechanism hereinafter
31 have transverse shoulders 3|‘, 31' (Figs. 10,
21, 22) which engage each other so that the
section 31 which is supported on shaft 33 will
45
be locked to section 3| against rotation. A
cutter-head 14 is ?xedly secured to form-section
31. A collar 33' (Figs.>2l, 22) is screw-threaded
to the end-portion of the spindle 33 to hold the
non-rotatable head 14 and form-section 31 which
are secured together, on the shaft 33. An anti
friction thrust-bearing is provided between the
shaft 33 and the head 14. The head 32, to which
is ?xed the form-section 3|, is slidable with
the tail-stock 33 so it can be separated from
described.
_
.
The mechanism for driving shaft 33 comprises
a rotary motor 66 which is operable by ?uid
under pressure, a sprocket-pinion 31 ?xed to
rotate with the shaft of said motor, a chain
33 driven by said sprocket and a sprocket-wheel
>53 keyed to shaft 33. The operation ‘of motor
36 is controlled by a throttle-valve 63 _ (Fig. 18)
which is controlled by a lever 6| which is con
nected by a link 62 to the armature of a solenoid
,magnet 63. This magnet is automatically con
trolled by means hereinafter set forth.
Cam 33 is rotated in the same direction as, and
at a slightly slower speed than, the winding-arm
43 and its drive-shaft 33, by reduction gearing
(Figs. 1 and 2) comprising a gear 64 which is
keyed to shaft 39; a pinion 65 mounted on astud
66, and meshing with gear 64; a gear 61 rotating
Thetail-stock 33 and form-section 3| are manu- ' on a stud 63 and meshing with pinion 65; a pinion
ally'shiftable for opening the form by meant 63 ?xed to rotate with gear 61, a gear 13 rotat
of mechanism comprising a vertically movable able on stud 63 and meshing with pinion 63; and a
rod 4| (Fig. 20) .the upper end of which is gear 1| meshing with gear 13 and ?xed to cam
pivoted at 42 to a pair of toggle-links 43 and 53. This gearing drives gear 1| and cam 53 at a
44.v Link 43 is pivoted to bracket 34 and link sumciently lower speed than shaft 33 and wind
form-section 31 to permit the coil, after it has
been wound on the form to be removed. The
cutter-head and formésection 31, when the form;
sections are separated, are held against rotation
by the cutter-blade, as hereinafter set forth.
44 is pivoted to the tail-stock 33. ‘ A spring 45
lug-arm 46 to cause cam 53 to impart the succes
is applied to rod 4|, to normally hold the links
in their/extended position and lock the tail
stock Y33 and head 32 in their operative position.
A pedal or any‘ suitable lever (not shown) is
applied in any suitable manner to rod 4| for
sive longitudinal steps to the winding-arm for the
rotate cam 33 to make one complete revolution
its convenient manipulation by‘ the operator.
Gears 65, 31, 63, and 13 and the studs 36 and
When the rod 4| has been lowered by the op
erator, the tail-stock 33, head 32 and form
75 section 3| will be in the position indicated by
completion of a coil.
This gearing is adapted to
relatively to winding-arm 46 during a complete
coil-winding operation.
.
.
.
I3 are mounted in a removable bracket 12 which
is adiustably secured by screws 13 to the bed 33
to permit different gear-sets to be readily substi
.2,‘114,2a7
tuted to vary the relative speed of the'cam~ 53
with respect to the winding-arm 48 when coils
of diilferent numbers of convolutlons are to be
formed. For this purpose, cams 53 of di?erent
shapes may be substituted to meet these require
ments in winding diii'erent coils.
The coils are usually wound with a 'pair of
parallel wires a. Mechanism is provided ior
' shearing the ends of the wires '1: of each coil upon
10 completion of a winding operation and for bend
ing a hook a’ on the ends of the wires to secure
them to the stationary head 14. Head 14 has a
transverse slot 15 lined with a lower cutteréplate
‘i8 and an upper cutter-plate 11 (Figs. 18-14).
is
A reciprocable cutter-blade 18 is adapted to pass 7
between said plates 18 and 11 and into slot 15 to
shear the wire laid or held against said plates.
At the beginning of a. winding operation, the ends
a2 of parallel wires a are bent over the lower
20 plate 16 (Fig. 11) and hooked on the head 14 so
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'
3
'
the cutter blade 18 will continue to secure the
head 14 against rotation. until the form-sections
3| and 31 have been .brought together for the
succeeding winding operation and it is necessary
to retract blade 18 to provide clearance for the U1
rotation of the winding-armli; A spring 881
is applied between link 83 and arm 88 to nor
mally holda stop 88" (Fig. 9) againstarm 85 so '
the recess in the outer end of arm 88 will be
aligned with the stud 89 when said arm is re 10
tracted independently of the cutter-blade 18. A
cam 98 ?xed to and rotating in advance of the
winding-arm 48 engages an extension 18'l on the
cutter-blade l8 and retracts the blade during
the ?rst revolution of the winding-arm 46. This
occurs in advance of the winding-arm to clear its
path'for winding the wires on the form.
Mechanism vis provided for automatically stopping the winding-arm when the'desired-number
of windings have been wound around the form 20
3|‘, 31 to'complete the coil and before the cutter
‘they will be held against rotation while the wind.
ing-arm 48 winds the coil. During the winding blade 18 is operated to sever the coil from the
supply-line of wire. This mechanism comprises
operation the cutter-blade is retracted (Fig. 1)
to permit said arm to travel. around head 14.‘ an electric switch 92 (Fig. 3) for controlling the
25 After a coil has been wound around the form 3|, electrical circuit for the magnet 53 which con 25
31, and during the last revolution of arm 45 of trols the operation of the ?uid-motor 56 which
drives the winding. mechanism and posi.ively act
each series of revolutions of each coil winding op
eration, said arm will be swung longitudinally into ing stop mechanism whereby the shaft 39 and the
position shown in Fig. 9. as the roller 54 thereon ‘winding-arm 46 will be arrested at a predeter
enters the notch 53“ in cam 53 to lay the wires mined point after the desired number of windings 30
over the inclined guide or horn 88 on head 14 and vfor a complete coil have been wound on the form
across the plates 16, 11 and slot 15. When the and the arm 48 has laid the wires into position on
:
V
blade 18 is shifted into slot 15 it will sever the the head 14 in readiness for cutting.
The‘ mechanism for controlling the motor 56
wires at the lower edge of upper plate 11_ in the
.head and bend the portion of the wires between which automatically opens switch 92 to stop the
plate 16, 11 downwardly around the outer edge winding mechanism at the end of a complete
of lower plate 15 and over the top face of said coil-winding operation, comprises a, disk I84
plate (Fig. 10), the cutter~blade 18 being provided which is ?xed torotate with gear 84 which is
driven directly by the drive shaft 39 and is pro
~ with a notch 82 for that purpose. The books will
40 be formed on the ends a’ of the wires which ex
vided with a peripheral notch I85; an annular
?ange I86 having a peripheral notch I81 and
tend between the head 14 and the winding-arm
46 for the purpose of securing them to the head.
When'the wires are laid around the head 14 after
?xed on cam 53; and an arm I88 which is piv
a coil has been wound, the portions thereof extending across slot 15 will crowd the hooks on the
which makes one complete revolution relatively to - 45
other end of the coil laterally into position illus
trated in Figs. 12 and 13. A notch 8| is cut in
the front edge of the cutter-blade '18 which is in
alignment with‘ the hooked ends of the wires after
they have been crowded laterally as aforesaid.
As the cutter-blade 18 is operated to sever the
ends of the completed coil, it will, at notch 8|,
also sever the hooks from the wires so that ‘the
completed coil will be separable from the head.
The cutter-blade 18 is shifted to shear the wire
simultaneously with Ihe opening of the form-sec
tions 3|, 31 for the removal of a completed coil.
so it will pass into the slot 15 and lock the head
otally and slidably supported to shift and con
trol the switch 92. The notch I81 in ?ange I88
the disk J84 and its cam notch‘ I85, during each
complete winding operation is adapted to shift
arm I88 to open switch 92 when notches I85 in
disk I84 and notch I81 in ?ange I88 are side-bye
side and permit the distal end of the dog‘ to swing
For accurate timing the disk
i into both notches.
I84 is adjustably secured to gear 84 by a screw
(Figs; 1 and 2) 'which extends through an arcuate
slot 64“ in said gear. The rear end of notch
I81 has a radial shoulder which engages arm I88
to shift it, bodily to e?'ect the opening of switch
92. The notch I85 in disk I84 rhich travels
faster than the ?ange I88 and its notch I81 is in;
if and form-section 31 against rotation while clined to lift the arm I88 out of the notch I81
31. For this purpose, the blade 18 is movable
when arm I88 has opened switch 92. Arm I88 60
comprises a dog, I89 adapted to ride on the pe
into its operative position by a link 83 (Figs. 9,
ripheries of disk I84 and ?ange I85 and a body
the form-section 3| is‘ separated from section
19) which is pivoted at 84 to a lug attached to
H8 in which a stem on the dog I89 is slidably
the tail-stock 33 whichisslidable inbracket 34,
mounted. A cushion-spring III presses ‘dog I88
65 an arm 85 which is pivoted at 86 to the top of
the bracket in which the cutter-blade ' 18 is
mounted and to link 83 at 81, and a thrust arm
88 which is pivo‘ed to the outer end of arm 85 and
has a recess in its outer end adapted to engage
an upstanding stud 89 on the cutter-blade. Arm'
88 is retractible by its shifting means independ
ently of stud 88 so that cutter-blade ‘I8 will not
be retracted when the tail-stock 33 is shifted to
bring the form-sections 3|, 31 together prepara
75 tory to the succeeding winding operation so that
outwardly within the limits of a stop-pin H2
which is ?xed to the stem of dog I88 and is slid
able in a slot “3 formed in the body II8. The
body I I8‘ of arm I 88 is pivoted on a studi I4 which
is rigid with a bar II5 which is slidably mounted
in bracket 19 in which the cutter-blade ‘I8 is 70
mounted. The outer end of bar' I I5 is adapted
to engage a roller on an arm 92“ on the rock
shaft of the arm of switch 92. A spring II‘ is
applied to switch arm 92" to normally hold switch
92 in its closed position. The lower end of the 75
4
2,114,287
body no of arm I08 slides on a fixed track 1': gaged from disk 84. -When switch 82 is opened
to avoid the application of twisting stresses from by the automatically-controlled stop-mechanism,
‘ arm I08 on bar “5.
A latch III which is piv
oted to one side of bracket ‘I8, is adapted to en
gage the square stud Ill on slide-bar “5 to hold
said bar and the lower pivoted end of arm I08 in
position to hold open the switch 82 upon the shift
of said arm -by the notch I01 in ?ange I06
upon the completion of a winding operation. A
10 spring “8 is applied to latch III to snap it into
position to lock stud Ill (Fig. 5) when the latter
is moved outwardly by the arm I08. A trip-arm
I20 is pivotally and slidably mounted on a stud
I2| which is ?xed to bracket ‘I8 and passes
15 through an elongated-slot in said trip-arm and
has a hook adapted to engage a shoulder on latch
III to shift said latch to release stud Ill, bar “5
and arm I08 so the switch 82 will be closed when
the completed coil has been removed from form
20 3|, 31 and the form—sections are brought togeth
erfor the next winding operation. Trip-arm I20
is provided with an upstanding lug I22 which is
engaged by the arm 85 of the mechanism for sep
arating the form-sections and shifting the cut
25 ter-blade ‘I8 into its operative position. A spring
I23 is‘ applied to normally shift trip-arm I20‘
longitudinally when the link 85 is shifted out of
its normal position and at the same time to swing
the link to engage latch II‘I when the arm 85 is
30 shifted to release the trip-arm (Fig. 3). At the
completion of a winding operation, bar “5 is se
cured in position to hold switch 82 open by
latch I II, as shown in Fig. 5. When the tail-stock
33 is retracted to separate the form-sections 3|,
31, which is done after the arm I08 has been'shift
ed to open switch 82 and latch‘ I|‘_| holds said
magnet 63 will be deenergized, whereupon dog 85
will be pressed by spring I00 against disk 84 to
engage shoulder 86 and positively stop shaft 38
and winding-arm 46 against further rotation.
This mechanism causes the winding-arm to be
positively stopped at the correct starting posi
tion for each winding operation.
-
The invention provides means for graspin
each completed coil, after it has been wound on
the form 3|, 3‘! with the ends of wire projecting
therefrom, to hold its loops together and facili
tate the handling of the coil until its assembly
with the armature-core.
This means consists of
clips (Figs. 15, 16, 21, 22, and 23) which are pro
vided in any desired number and are adapted to
be placed on the top of form-sections and slipped
around the windings of the coil thereon, before
the sections are separated for the removal of the
coil. Each of these clips is built up of a pair of
plates I25, I26 which are spaced apart along one
side by an intermediate strip I21, and all rigidly
secured together in any suitable manner, and
ejector-bar I32 con?ned between said plates. A
pair of flat spring-strips I28 have terminals
?xedly secured to ‘the upper face of plate I26 and
extend freely around the back and underside of
the clip so their underlying portions will be re
silient. These strips are each provided at their
front ends with an upturned tongue I28 adapted
to extend across the gap between plates I25, I26.
for securing the coil between said plates and
with an inclined or cam-portion I30 which ex
tends through a slot inv the lower plate I25 for
engagement by a wedge-surface I3I of the
ejector-bar I32 which is slidably icon?ned be
tween plates I25 and I26. The clip fits ?atwise
bar, arm 85 of the connection for shifting the
cutter-blade ‘I8 will be moved away from lug
I22 of the trip-arm I20, whereupon spring I23 will on the inclined top face of head 32 and form
shift the‘ trip-arminto position shown in Fig. 3. section 3| so it will be guided into position to
When the tail-stock 33 is shifted to bring the receive the coil on the form. Lugs I34 on the
form-sections 3|, 31 together, arm 85 will engage .plates of the clip ?t between shoulders I35 0n
lug I22 and shift the trip-arm I20 into position ' form-section 3| and head 32, to guide the clip
shown in Fig. 4. This movement of the trip- ' into" position to receive the coil Within'Ithe open:
45 arm will ?rst'rock latch III to release the stud ing between the plates I25, I26 (Figs. 15 and 23).
Ejector I32 has - projecting ends which are
Ill on the slide-bar‘ I I5 and then rock the trip
arm to release said latch into the position shown
in Fig. 4. vDuring the following winding opera
tion, trip-arm I20 will remain in position shown
I in Fig. 4, so that it will be inoperative untilv arm
85 is next operated to open the form 3|, 31 and
shift the cutter-blade ‘I8 into its operative posi
tion. During the winding operation, latch III
will rest on top of stud I I4 until arm I08 is shifted
55 by the ?ange I06 on cam 53 to open the switch at
the end of a winding operation.
The positively-acting stop mechanism for ar
resting the winding-arm at the desired predeter
mined point in its rotation at the end of a wind
60 ing operation comprises (Figs. 17 and 18) a disk
84 ?xed to rotate with shaft 38; a stop-dog 85
adapted to engage a shoulder 86 on said disk and
pivoted at 81 to the bed 28; and a rod which is
pivoted to and shiftable by the magnet-controlled
65
lever 6| and extends through alug on dog 85 and
has an adjustable collar at its upper end for en
gaging said lug to hold the dog disengaged from
said disk against the force of a spring I00. A
70 spring-pressed pawl |0| is pivoted at I02 and
engages a shoulder I03 on disk 88 to prevent back
lash of shaft 38 and the winding-arm 66. when
the helix of magnet 63 is energized, which occurs
‘hen switch 82 is closed and the winding mech
‘m is in operation, it will hold dog 85 disen
adapted to engage stops I36 on the form-section
3| as the clip is slipped over form-section 3| to
arrest said plate and permit the plates I25 and
I26 to pass over and under the windings of the
coil. When a previously formed coil has been
ejected from the clip, the ejector will be posi
tioned at the front of the clip, as shown in Fig. 21,
in which position it will hold the spring-strips
I28 depressed so their tongues I28 will be posi
tioned for the reception of the coil. The clip is
?rst placed on head 32 and section 3|, as shown
in Fig. 21, adjacent the wound coil and While the
form-sections are closed or together. The ejector
I32 will then be arrested by stops I36. The
plates I25, I26 and strip I2'I will then be forced
toward the end form-section 31 while the ejector
I32 is arrested by stops I36, so the windings on
the form will pass between plates I25, I26 until
the entire coil lies within the space between said
plates, as shown in Fig. 22. The wedge-surfaces
I3I on the ejector I32 will then permit the strips
I28 to snap inwardly and tongues I28 pass across
the gap between plates I25, I26 and retain the
coil in the clip. The upper face of head 32 and
form-section 3| have grooves cut therein to re
ceive spring-strips I28 while the clip is being
moved into receiving position. These clips are
utilized to ?rmly retain the convolutions of the
coil in proper relation for removal to the machine
2,114,287
or apparatus for assembling the coils in armature
cores. The ejectors may beutilized to force the
coil from the clip into the grooves of the arma—
tures during the assembling operation.
5
-
The operation of the winding and controlli
mechanisms will be as follows: At the commence
ment of a winding operation, the sections 3|, 81
of the form will be separated, as shown in Fig. 9
and by dotted lines in Fig. 20, as they are left
after the removal of the previously wound coil.
While the form-sections are separated, the mech
anism for shifting the cutter-blade 18, including
links 83, and arms 85 and 80, will be in position
shown in Fig. 9 with the cutter-blade 18 in the
15 head 14.
At such time arm 05 of the connection
for shifting the cutter-blade 18, will be away
5
tive rotation. produced by the gears 64, 65, 01,
i0, 10 and II, will bring ‘their respective notches
I08 and I01 into registry so that the dog I00 of
arm I88 can drop into both notches by pivotal
movement on stud Ill. The shoulder at the end
of notch I01 will then engage the dog I09 and
shift arm I08 longitudinally to move the stud
II‘ on the bar H5 outwardly. This will cause,
bar II! to rock switch-lever 02“ against the
force of spring I I6 and open the switch 02. Latch
-I I1 will thenswing into position shown in Figs.
3 and 5 to lock stud III and bar II5 to hold the
switch 82>open. While dog .I09 of arm I08 is
being shifted longitudinally by the shoulder of
_ patch 101 in ?ange I00, the inclined trailing 15
end of notch I05 in disk I04 which rotates faster
from trip-arm I20, and said trip-arm, latch II1,‘
than, and relatively to, the notch I01 in ?ange
slide bar H5 and arm I08 will be in positionv
shown in Fig. 3 and switch-lever 82' will be held
I06, will liftv dog I00 over the shoulder of notch
I01 and swing the dog on the pivot of arm I00,
so the dog will rest on the peripheries of both 20
the disk and the ?ange-in readiness for the suc
ceeding winding operation. - During the winding
20 to-hold the switch 92‘open.
Disk I08 and ?ang'e
I0Iiv will then be‘ in position shown in Fig. 33, mag
net 83 will be deenergized, throttle 60 will be
closed and motor 56 will be inoperative.
The
operatorwill ?rst close the form by shifting form
section 0i into mating engagement with ‘form
operation, notches I05 and I01 are out of ‘align
ment so that the dog I00 will not. swing into
notch>I01 until the notches I05, I01, are both
section .31, as shown in Figs. 19 and 20. As the .positioned to permit thedog I09 to swing into
form is closed, link 83 and arms '85,‘ 88 will-be notch I01. Spring III cushions the impact of‘
shifted into position ‘shown in Fig. 1, independ
the shoulder of notch I01 against dog I09. When
ently of cutter-head ‘I0, and arm 05 will strike. the disk’, 94 on winding-shaft 39 reaches the
30 ltrip-arm I20 and shift it into position shown in position shown in Fig. '17, which it may do by
Fig. 7. The trip-arm I 20 'will rock latch I I1 to momentum after the switch .92, has been opened,
release stud H4 and permit spring vI I6, which is dog 85 and backlash pawl IOI will lock the said‘
applied to switch-lever '02", to shift the slide-bar shaft and the yinding-arm 06 against rotation.
I I5, stud I I4, and the lower end of arm I88. This The operator-will then retract the form-section
35 movement of bar II5 will close switch 02 to ener
3i, which willoperate link “and arms 83, 85
gize magnet “which will operate lever ‘I to open and 80 to project the cutter-blade 18 into the
the throttle-valve 80, to admit ?uid to, and drive slot 18 between plates 18, 11 in head 10 (Fig. 9).
the motor 56 which drives the shaft 88 of the Latch ‘III, as soonas' the bar II5 has-been thus
winding mechanism.
'
shifted will secure ‘stud Ill and-slide-bar 'I IS in
During the initial revolution vof the Winding
position to hold the switch open, as shown in 40
arm 08 and in advance thereof, cam, 80, which Fig. 5.
..
_
rotates with the winding-arm, will engage the . ' The operator will, while the\winding mecha-v
cutter-blade 18 and retract it to clear the path of nism is stopped, apply one of the clips to the'coil '
rotation of the winding-arm. During the initial
45 revolutionof each winding operation, arm 08 will
be shifted by cam 53 from, the position shown in
wound on the form as previously described ‘Next,
the operator will retractv the tail-stock 80 to
separate the fOrm-isections III, .81 and simulta- '
Fig. 9 to that shown in Fig.1, so that the wires 0 neously shift the_cutter-blade 18 into the cutter
from said arm . will clear head ‘I8 and will be . head 18 so that the latter and form-section 31
wound on the form. The parallel wires 0 will be will be held against rotation-while the form
held by their hooked ends a’ in engagement with sectlo'ns are separated. This movement of cut
the stationary cutter-head 10 so the rotation of '
the winding-arm around the form will wind the
coil. During the operation, the'winding-arm will
traverse the form’ axially ‘and back and forth to
evenly wind the layers of wire on the form'under
control of cam 83.
_
'
tea-‘blade 18 will shear the hooked ends a’ of the
wires a which are held-in the head ‘and also shear,
at the upper plate 11, the ends of the wires‘
which then extend'across the slot 18 between said
plates at, and bend the sheared portions on, the 55
1c: the new coil to form hooks a’.v which .
The winding-arm
to be rotated will secure wlresofthe next coil to be wound in '
until cam 88 has completed one revolution rela
during the succeeding winding opera
tively’ to the winding-arm.~ While this occurs,
The'wires a, where they; are laid across
the desired number of revolutions of wire will be slot‘ 10-, will vcrowd the previously formed hooked
wound on the form. During the last revolution ends c'into alignment with the portion“ the‘
of the winding-arm of. the series required for a‘ cutter-blade 18 (Fig. 12)‘ into notch 8I. _
complete coil, the arm will be swung lon'gitudb, ' When the cutteréblade 18 is shifted to shear
nally by spring 88 under control of notch 88' in the wires c, as aforesaid, arm 85 'of the‘connec
cam 08to lapthe wires‘aaroundthehornor tion for shifting said'blade, ‘will release trip-arm‘ 66
guide 88 on the cutter-head and across the slot .I28 and permit spring I28 to shift the trip-arm -'
15in said head 14 and thecutting-edges of into position shown in. Fig.- 3. when the form .
plates", 18 (Figs. l2‘and7 13) .- vDuring the wind
ing operation, dog I08 will ride on the periphe
70 cries of disk m and ?ange m, and will‘not be
actuated to shift bar I", so that switch 82 will
remain closed to continue the operation of
it. After the coil has been wound and the wires
a have‘ been lapped around the cutter-head 14,
70 disk I80 and ?ange I88,'>on account of their rela
a, n is next closed‘; and 0s strike’s'trip-arm no
which is thenlatch H1, and swings the
latch so it will release- stud VI“ and bar “8.. This 70
will cause-the ‘switch a: m be ‘closed and/the
tripearm m. latch an, arm m and bar: us to .
pass into position shown'in-Flg. .‘1. The closing‘
of the-switch]: will enersize magnet,“ to open
the throttle valve ‘88 to operate motor-00 and to '
2,114,287
6
release dog 95 and latch IOI for the next opera
tion of the winding mechanism. During the ?rst
revolution of the winding arm 46, cam 90,-which
' rotates with the winding-arm 46'and travels in
advance thereof, will engage the cutter-blade 16
and force it outwardly to clear the path for the
winding-arm 46. These winding operations will
be repeated and each operation will be controlled
28) secured to rotate with and slidable on shaft
I61 by means, of a pin I10 ?xed to said shaft
and extending into a slot "I in the sleeve; a
collar I12 carried by sleeve I69 to coact with an
annular shoulder on the sleeve in shifting the
lever i13 of switch I63; a shaft I14 mounted in
a bearing suspended from table 30 coaxial with
sleeve I69, and provided with‘a screw-thread I15
engaging an internal screw-thread in the sleeve'
I69 to cause the sleeve to be shifted to switch 10
dereeling mechanism (Figs. 24, 25, and 26) to ‘ lever I13 by relative rotation of shafts I14 and
I61; and operated in synchronism with the bodily
release the wires in accordance with the length
required for winding the coils and to control said rotation of the reels I39 by a pulley I16 ?xed
mechanism (Figs. 27 and 28) from the winding to said shaft, a belt I11 around said pulley and
mechanism. The dereeling mechanism comprises a pulley I18 on the hollow stud I6I which is ro 16
a pair of hollow shafts or sleeves I40 each for tated from shaft I42 by sleeve I59 and bracket
I60.
holding a reel I39 of wire. Sleeves I40 are ?x
The operation of this mechanism for control
edly supported in a frame or arms I4I which is‘
ling.the
dereeling mechanism will be as follows:
?xed to a shaft I42. This frame and shaft are
adapted to bodily rotate the sleeves I40 and the When the winding mechanism is started as the 20
as described.
The invention contemplates the operation of
10
20
reels ca'rried thereby. Shaft I42 is driven from
an electric motor I44 through suitable reduction
gearing I45, a pulley I46, belt I41 and a pulley
I48 ?xed to shaft I42. Disks I49, having curved
25 peripheries, are removably secured to shafts I5I
which extend through sleeve I40. These shafts
are adapted to be driven around the axes of the
reels I39, respectively, to unwind the wire from
the reels. The disks I49 are driven during the
30 bodily rotation of the reels and sleeves I40, by
pulleys I52 fixed to shafts I5I, respectively, and
a friction-pulley I53 which engages both of the
pulleys I52 and is ?xedly held, and stationarily,
result of the closing of switch 92, pulley I64
which rotates with the winding shaft, will drive
belt I65, pulley I66, shaft I61 and sleeve I69,
at which time the shaft I14 will be idle. The
sleeve I69, through its screw-thread engage
ment with stationary shaft I14, will shift switch
lever I13 and close switch I63 to start the mo
tor I44 for driving the dereeling mechanism with
the winding-shaft 39. Motor I44 is wound to
drive shaft I42 at the same speed as the wind 30
ing-shaft 39 is driven. When the motor I44
is started, shafts I61 and I14 will‘be driven at
the same speed so that the axial movement of
on the journal at the upper end of standard I43. sleeve I69 will be discontinued and the switch 35
I63 will remain closed to continue the opera
35 During the periods when the motor is operated,
pulleys I52 will, through-frictional engagement - tion of motor I44. When the winding mechanism
with'the stationary friction-wheel I53, rotate
the disks I49.
The wires from‘ the reels I39
are looped around the peripheries of the disks
40 I49 and between the reels and guides I54 which
are coaxial with the reels, respectively. From
guides I54 the wires are guided by sheaves I55
and I56 to rollers I51 which guide the wires‘
to a point substantiallycoaxial with the hollow
45 .shaft 39 of the coil-winding mechanism. Guides
I54, shaft I42 and sheaves I55, I56 are carried
by a bracket I58 which is fixed to a sleeve I59
which is secured to rotate with the shaft‘ I42.
Rollers I51 are mounted on a bracket which is
secured to sleeve I59. A bracket I60 is ?xed to
‘sleeve I59 and to a hollow stud I6I which is
journaled in a bracket‘ I62. The bodily rota
isautomatically stopped by the opening of switch
92, as hereinbefore described, at the completion
of a coil-winding operation, shaft I61 will also
stop. Thereupon, sleeve I69 will be held against
rotation while shaft I 14, through its screw
thread vconnection with the sleeve, will shift the
latter axially to open the switch. As a result, the
dereeling mechanism will be operated and auto
matically controlled responsively to the opera
tions of the winding mechanism.
‘
The invention is not to be understood as re
stricted to the details set forth, since these may
be modi?ed within the scope of the appended.
claims, without departing from the spirit and
scope of the invention.
Having thus described the invention, what I
tion of the reels prevents the twisting of the
claim as new and desire to secure by Letters
wires by the winding mechanism so they will
Patent is:
55 be fed in parallel to the winding-shaft. The
rotation of the disks I49 on their own axes de
reels the wire from the reels. While the winding
arm 46 is rotating to wind the wire around the
form for the coil, the wires are subjected to a
pull to cause the leads from the reels to fric
tionally engage the periphery of the disks I49.
When the winding-arm fails to take up the wire
paid out by the disks I49, the loops of wire around‘
the disk will be loose and free and the dereeling
65 of the wire will stop.
Motor I44 which drives the dereeling mecha
‘ them is controlled by an electric switch I63 (Figs.
2'7 and 28) which is ‘automatically controlled by
the winding mechanism. The mechanism for
70 controlling switch I69 and motor I44 comprises
a pulley I64 which has a hollow hub which is
?xed to'rotate with the winding shaft 39; a belt
- I65 driven“ by said pulley; a pulley I66 driven
by said belt and ?xed to a shaft I61 which is
75 'iournaled in a bracket I66; a sleeve I69 (Fig.
-
1. In a machine for winding wire coils, the 55
combination of a non-rotatable form around
which the wire is wound, formed of separable
sections; a stationary head; a rotatable winding
arm adapted to lay the wire around the form
and the head, the head being disposed between
60
the arm and the form; means for supplying wire
to the, arm; and means for driving said arm.
'
2. In a machine for making wire coils for
armatures, the combination of a stationary form -
for the wire composed of separable sections to 65
permit the coil'to be removed; a rotatable wind
ing-arm coaxial with, and for laying the wire
around the form: ‘a stationary head between the
form and the arm, the arm being adapted to ro
tate around the head and being longitudinally 70
movable to lay the end of a coil on the head;'
means for supplying wire to the arm; and means
for driving the arm.
‘
v
3. In a machine for winding wire coils, the
combination of a‘ non-rotatable form around 75
7
2,114,287 -
which the wire is wound; a stationary head adja
tion for holding the head against rotation when
cent said form; ‘a rotatable arid longitudinally
swinging winding-arm adapted to lay the wire
pendently of the head and movable into inter
around the form and the head; means for auto
. ?tting engagement therewith to secure it against.
matically controlling the swinging movement of
rotationwhen the form-sections are separated.
the‘form is closed; and means mounted inde
11. In a winding machine for wire coils, the
the arm,‘ and means for shearing the wire when
- combination of a stationary form formed of sep
it is lapped around the head.‘
arable sections; a stationary head adjacent said
-4. Ina machine for winding wire coils, the
~rcombination of a non-rotatable form around ' form; a. rotatable winding-arm for laying the
wire around the form and the head; means for 10
which the wire is wound; a stationary head ad
jacent said form; a rotatabTe'wiiiding-arm adapt- ' supplying wire to the arm; a drive-shaft for said '
ed to lay the wire around the form and the head;
means for guiding wire to the arm; and means for _
conjointly shearing the wire lapped around the
15 head and for securing_.qne end of the wire to the
head.
5. In a machine for winding wire coils, the
combination of a non-rotatable form composed
of separable sections around which the wire is
arm, said head and one of the form-sections be
ing non-rotatably supported by said shaft; means
for shifting the other form-section to open and
close the form, said head being secured against 15
rotation by the last named form-section; and
a shearing member mounted independently of
the head and movable into engagement with the
head to‘ secure the head against rotation when
20 wound; a stationary head to one side of which .the form-sections are separable to remove a 20
one of the form-sections is ?xed; a rotatable
winding-arm adapted to lay the wire around the
12. In a winding machine for wire coils, the
form and movable longitudinally to lay the wire combination of a stationary form~formed of sep
across the head when a coil is wound; and means arable sections; a-stationary head adjacent said
form; a rotatable winding-arm for laying the
25 for shearing the wire lapped around the head.
coil.
6. In _a winding machine’ for wire coils, the
combination of a stationary form for the wire;
a stationary head adjacent said form; a rotatable
winding-arm for laying the wire around the
80 form and the head; means for Supplying wire to
the arm; and means for shearing the _wire lap
ping the head, comprising a cutter-blade mov
ably mounted independently of and coacting with
7
a
wire around the form and the head; means for
supplying wire to the arm; a drive-shaft for said
arm, said head and one of the form-sections be
ing non-rotatably carried by said shaft, said
head being secured against rotation by the other 30
form-section; a shearing member mounted inde
pendently of the headand movable into engage
ment with the head to secure the head against
rotation when the form-sections are separated. '
.
7. In a winding machine for wire coils, the ‘to remove a coil; and means for conjointly shift
combination of a stationary form for the wire; ' ing said other form-section to open the form and
a stationary head adjacent ‘said form; a rotat- ' said shearing member to shear the wire.
the head.
able winding-arm for laying the wire around the
13; In a winding machine for wire‘ coils, the
form and the head; means for supplying wire to
40 the arm; andmeans for shearing the wire lapped
around the head, comprising a' cutter-blade mov
combination of a stationary form formed of sep
arable sections; a stationary head adjacent said
form; a rotatable winding-arm for laying the
ably mounted independently of the head; and a
wire around the form and the head; means for
plurality of coacting» blades in the head.
supplying wire to the arm; a drive-shaft for said
8. In a winding machine for wire coils, the' arm,_said head and one of the form-sections be
45 combination of-‘a stationary form for the wire;
ing non-rotatably carried by said shaft, said head 45
a stationary head adjacent said form; a rotatable being secured against rotation by the other form.
winding-arm for laying'the wire around the form section; a shearing member mounted independ
and the head; means for supplying wire to the ently of the head and movable into engagement
arm; means for shearing the wirellapped around ‘ with the head to secure the head against rotation
the ‘head, comprising a cutter-blade movably when the form-sections are separated to remove
mounted independently of the head; and a coacte a coil; and means for conjointly shifting said
ing blade in thehead, the blade having means other formésection to open the form and said
for bedding a hook on the wire to secure it to shearing member to shear the wire, said shifting .
means being adapted to close the form without
9. In a‘vwindlng machine ‘for wire coils, the retracting the shearing member from the head.
55
14. In a winding machine for wire coils, the ,
combination of a stationary form; a stationary
combination of' a stationary form around which
head adjacent said-formfa rotatable windins
arm for laying the wire around the form and the wire is wound: a longitudinally moving wind
the head.
-
,
,
,
.
‘
the head; means for supplying wire to the arm;
ing-arm adapted to rotate around and lay the
a drive-shaft for said arm, said-head being non
' wire on the form; a. shaft for driving saidarm;
rotatably supported‘by said shaft; means on the
means for guiding wire through the shaft and to
_ form for securing the head against rotation; and
the arm; a rotatable cam on the shaft for con
means mounted independently of the head and
movable into inter-?tting engagement therewith
trollingthe longitudinal movement of the arm;
to secure it against rotation.
i
r
10. In a winding machine for wire cells, the
. combination of a stationary form formed of sep
arable sections; a stationary head adjacent said
form; a rotatable winding-arm for laying the
70 wire around the form and the head; means-for
supplying wire to the arm; a drive-shaft for said
arm, said head and one of the form-sections be
ing non-rotatably supported by said shaft; means
' for shifting the other form-section to open and
75 plose the form; means on the' latter form-sec
and means for rotating said cam relatively to
' the arm, comprising gears respectively ?xed to 65
the shaft and the cam, and a gear-train between
Vsaid gears. '
15. In a winding machine for wire coils, the
combination of a stationaryform around which
the wire is wound; a longitudinally moving wind 70
ing-arm adapted to rotate around and layithe
wire on the form; a?shaft for driving said arm;
means for guiding wire through the shaft and '
tothe arm; a rotatable cam on the shaft for
controlling the longitudinal movement of the 75
8
2,114,287
arm; and means for rotating said cam relatively combination of a stationary form around which
to the arm, comprising gears respectively ?xed to 'the wires are wound; a rotatable winding-arm
for laying the wire around the form; a shaft for
the shaft and the cam, and an interchangeable
driving said arm; a plurality of reels of wire for
gear-train between said gears.
16-. In a winding machine for wire coils, the supplying the wire to the arm; means for guiding
a plurality of wires through the‘ shaft to said
combination of a stationary form for the wire;
a longitudinally moving winding-arm adapted to arm;'means for bodily rotating the reels;~ and
rotate around and lay the wire on the form; a means for controlling the spool-rotating means,
shaft fordriving said arm; means for guiding conjointly with the operation of the winding-arm.
21. In a winding machine for wire coils, the 10
wire'through the shaft and to the arm; a rotat
combination of a stationary form around which >
able cam' on the shaft for- controlling the longi
the wires are wound; a rotatable winding-arm
tudinal movement of the arm; means for rotat
ing said cam relatively to the arm, and means for laying the wire around the form; a‘ shaft for
driving said arm; a plurality of reels of wire for
for automatically stopping said arm at the com
supplying the wire to the arm ;- means for guiding
15 pletion of a predetermined number of revolutions.
17. In a machine for winding wire coils, the a plurality of wires through the shaft to said
combination af a stationary form around which arm; means for bodily rotating the reels coaxial
ly with the‘ winding-arm; and means for con
the wire is wound and comprising separable sec
tions; a rotatable winding-arm adapted to lay trolling the spool-rotating means conjointly with
20
the operation of the winding-arm.
20 the wire around the form; means for shearing
22. A clip‘ for use with a machine for winding
the wire leading to the winding-arm after a coil
has been wound on the form; mechanism for coils on a form, comprising means adapted to be
placed around the windings at one side of a coil
driving the winding-arm; means for automatical
on the form, and means for removably retaining
‘ ly stopping. the driving means when a predeter
the windings in the clip upon removal of the 25
25 mined number of convolutions of wire have been
,
‘
wound on the form;v and means for conjointly coil from the form.
23. A clip for use with a machine for winding
starting the driving mechanism and bringing the
form-sections together.
18. In a machine for winding wire coils, the‘
combination of a stationary form, a rotatable
winding-arm adapted to lay the wire around the
form; power-operated mechanism for driving the
winding-arm; and means for automatically stop
ping the power means at the end of a prede
35 termined number of revolutions of the winding
arm, comprising a pair of coaiicial rotatable mem
bers driven by said power means and provided
with coacting devices adapted to stop the driving
mechanism when they come into rotative regis
40
tration.
_
19. In a machine for winding wire coils, the
combination of a stationary ‘form, a rotatable
winding-arm adapted to lay the wire around the
form; power-operated mechanism for driving the
45 winding-arm; and means for automatically stop
ping the power means at the end of a predeter
mined number of revolutions of the winding-arm,
comprising a switch for controlling the power
mechanism and a pair of coaxial rotatable mem
bers driven by said mechanism and providedwith
coacting devices adapted to shift the switch to
stop the driving mechanism when they come into
rotative registration.
20. In a winding machine for wire-coils, the
coils on a form having a recess therein, compris
ing means adapted to enter the recess and to be
placed around the windings vat one side of a coil‘ 30
on'the form, and means for removably retaining
the windings in the clip upon removal of the coil
from the form.
24. A clip for use with a machine for winding
coils on a form comprising means adapted to be 35
placed around one side of a coil on the form,
means for removably holding the coil in the clip,
and means for ejecting the coil from the clip.
25. A clip for use with a machine for winding
coils on a form comprising means adapted to be 40
placed around the windings at one side of a
coil on the form, means for ejecting the coil from
the clip, and latch-means for removably holding
the coil in the clip, releasable by the ejecting
means.
26. A clip for use with a machine for winding
coils on a form having a recess therein in which
the clip is slidable, comprising a clip adapted to
slide in the recess and to pass around the wind
ings at one side of and into a coil on the form,
and means for removably retaining the windings
in the clip upon removal of the coil from the’
form.
JASPER F. CULLIN.
to
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