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Патент USA US3061918

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Nov. 6, 1962
M. J. STRAUB ETAL
3,051,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
45
10 Sheets-Sheet l
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DEAN /7'. Do Y/NG
MELVIN J: J‘TRAuB I
RA YMOND E. SI/aRTELL
J'asEPH C’. J-OUNEN
FLo YD LaBAsH
ATTORNE Ks‘
Nov. 6, 1962 '
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
10 Sheets-Sheet 2
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DEAN /1. Do YING
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JOSEPH C. JZJUNEN
Flo YD LoBAsH
Nov. 6, 1962
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
' 10 Sheeis-Sheet 5
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DEAN h’. 00 Y/NG
MEL V/N i-J‘TRAUB
RA YMOND f. SHORTELL
JbsEPH C. Jau/vE/Y
FLOYD LOB/48H
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Nov. 6, 1962
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
l0 Sheets-Sheet 5
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INVENTORS '
DEAN f1. Do Y/NG
MEI. VIN J.‘ \STR'AUB
RA YMOND E. \S'HORTELL
Joseph! C. Jou/vEN
FLO YD LoBA SH
Nov. 6, 1962
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
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'Nov. 6, 1962
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
.'
1o Sheets-Sheet 7
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INVENTORS
DEAN H. Dov/N6
MELVIN ZSTRA uB
RA YMOND E. SHORTELL.
JOSEPH C. J'OUNEN
FLOYD LosA SH
ATTORNEYS
Nov. 6, 1962
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
10 Sheets-Sheet 8
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Nov. 6, 1962
M. J. STRAUB ETAL
3,061,909
ARMATURE INSULATING MACHINE ,
Filed Sept. 16, 1959
10 Sheets—Sheet 9
INVENTORJ
DEAN /1. D0 Y/NG
MEL w/v I \S'TR/IUB
RA YMONDE. SHORTELL
Jasspu C. Jou/VEN
F1. 0 r0 L 08:‘! SH
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Nov. 6, 1962
3,061,909
M. J. STRAUB ETAL
ARMATURE INSULATING MACHINE
Filed Sept. 16, 1959
10 Sheets-Sheet 10
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DEAN H. 00 Y/NG
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United States Patent Oili ce
stress
Patented Nov. 6, I953?
2
3
ment of the machine to armatures having varying num
3,661,909
ARMA'I‘URE INSULATING MACHINE
Melvin I. Strauh, Hopkins, and Raymond E, Shortell,
loyd Lobash, Dean H. Buying, and Joseph C. Sounen,
Minneapolis, Minn, assignors, by mesne assignments,
to Ralph Mans?eld, Chicago, Ill.
Filed Sept. 16, 1959, Ser. No. 840,357
20 Claims. (Cl. 29—33)
bers of winding slots therein.
Yet another object of this invention is to provide an
armature insulating machine in which the insulation web
forming mechanism on the indexing mechanism has por
tions in common.
Still another object of this invention is to provide an
armature insulating machine that supplies insulating mate
rial to an armature in a continuous web and having novel
10 web control clamps to prevent axial movement of the
This invention is a machine for placing insulating
material in the slots of and around the outside of the
Web, as it being formed to the contour of the winding
armatures of electrical machines such as generators, rno
It is yet a further object of this invention to provide
an armature insulating machine having an insulating mate
rial cutting knife slidably mounted thereon as to be out
of the way when work is being done and quickly and
easily applied to sever the insulation web whenever an
armature has been insulated.
tors and the like when they are rewound in repair shops.
This work until now has been done manually. Prior
attempts to make a successful machine to perform this
work have been unsatisfactory for numerous reasons, one
of the main ones being that no satisfactory means of shap
ing the insulating material to the peculiar formations of
slots in an armature.
To the accomplishment of the foregoing and related
the armature slots were developed. The machine of the 20 ends, this invention then comprises the features herein
after fully described and particularly pointed out in the
present invention features a track structure which stabilizes
claims, the following description setting forth in detail
a carriage to limit its motion to reciprocation with re
spect to the track. The whole track, however, may be
pivoted or arced about the axis of rotation of an arma
ture supported in the machine. It is possible therefore
with a pro?ling ?nger secured to the carriage to insert the
pro?ling ?nger in the slot of an armature, thus forming
certain illustrative embodiments of the invention, these
being indicative, however, of but a few of the various
ways in which the principles of the invention may be em
ployed.
tipping the carriage before the indexing ?nger is with
The invention is illustrated by the accompanying draw
ings in which the same numerals refer to corresponding
parts and in which:
FIGURE 1 is a reduced perspective view of the entire
drawn.
machine;
Structure that solved the problem of restraining axial
movement of the insulating material as the pro?ling ?nger
FIGURE 2 is a plan view of the machine work surface
with portions of the device broken away to conserve space;
hidden parts are illustrated with broken lines; the scale
the insulating material to the contour of the armature
slot and then indexing the armature to the next slot by
is inserted and withdrawn comprises a paper clamp and
paper roller that are electrically related to operate in a 35 used is larger than that of FIGURE 1;
FIGURE 3 is a vertical section taken on the line 3-3
mutually exclusive manner to resist such axial movement
of FIGURE 2 with broken lines illustrating hidden and
of the insulation. A further concept that has proved
adjusted parts; broken lines also illustrate continuing repe
valuable is the combination of a stop for the end of the
titious parts shown only in part; the armature appears
armature that is aligned with a ?xed insulation guide
that causes one end of the armature and the edge of 40 in end elevation rather than section; the scale used is
the insulating material automatically to be aligned. The
opposing insulation guide is movable to permit adjust
ment for varying widths of insulating material and, there
fore, sizes of armatures that can be insulated. Still an
additional structure that neatly solved an otherwise vex
ing problem is found in the indexing structure which
employs the concept of having a cam determine a neutral
or reference position and a spring to move the structure
to its indexing position. A stop means readily adjustable
is the only control over the amount of indexing, there
fore, which means that the amount of indexing can be
quickly changed to adapt the machine to indexing cor
larger than that of FIGURE 2;
FIGURE 4 is a fragmentary side elevation with por
tions broken away to illustrate internal construction and
with hidden parts illustrated in broken lines; FIGURE 4
v is drawn to the same scale as FIGURE 2;
FIGURE 5 is a similar fragmentary side elevation with
the cams shown in different positions from those illus
trated in FIGURE 4 to illustrate a different step in the
cycle of operation; portions of the device are broken
away to show operation of otherwise hidden parts; FIG_
URE 5 is ‘drawn to the same scale as FIGURES 2 and 4;
FIGURE 6 is a similar view to that shown in FIG
rectly an armature having a different number of slots
from the one previously worked on in the machine.
URES 4 and 5 and drawn to the same scale showing a i
tion against an adjustable stop permitting rapid adjust
position than is illustrated in FIGURE 8;
still different position of the mechanism with broken lines
illustrating hidden parts;
Accordingly, it is an object of this invention to provide
FIGURE 7 is a fragmentary side elevation taken at
an armature insulating machine that automatically places
a point showing only the insertion blade operating cam
insulating material in the slots of an armature.
and with fragments of the other operating arms shown in
It is a further object of this invention to provide an
armature insulating machine that has an insulating mate 60 the position they would be in at the time the cam illus
trated is positioned as shown; broken lines show hidden
rial guide thereon which in combination with an armature
parts; portions of the device are broken away to illus
guide automatically aligns one edge of the insulating mate
trate operations more fully; this view is drawn to the
rial web with the side of an armature.
same scale as FIGURES 2, 4, 5 and 6;
It is another object of this invention to provide novel
FIGURE 8 is a fragmentary vertical section similar
means for forming the insulating web forced into the
to that shown in FIGURE 3 and drawn to the same scale
slots of the armature to assume the contour of the slot of
but illustrating a different position of the parts in a cycle
the armature.
of armature insulating; broken lines illustrate hidden and
It is a still further object of this invention to provide
represent the continuation of repetitious parts;
such an armature insulating machine that incorporates
FIGURE 9 is a view similar to FIGURE 8 and drawn
novel indexing structure which is positively moved to a
to the same scale except that less of the structure is
neutral or starting position and biased to an indexing posi
shown and the parts are shown in a di?erent operative
3,061,909
4
3
Means for severing the insulating material appropri
ately is provided in the knife consisting of the sliding
FIGURE 10 is an even more fragmentary view of
the insulation handling mechanism drawn to a scale larger
than that used in FIGURES 3, 8 and 9;
handle 37 riding on the guide bar 38 and supporting in
the controlled manner therefore the blade 39. The guide
bar is ?attened on one side which ?attened portion is
engaged by a key 33 in handle 37 to limit relative move
ment between the handle and the guide ‘bar to recipro
FIGURE 11 is a view similar to and drawn to the same
scale as FIGURE 10 and illustrating still another step
in the operation of the machine;
FIGURE 12 is a still more fragmentary view of the
mechanism shown in FIGURES 10 and 11 and drawn to
the same scale as those ?gures and showing still a further
step in the operation of the device;
cating motion of handle 37 along the guide bar. Guide
bar 38 is not only ?attened on one side but the juncture
10 of the ?at and curved surfaces is relieved by the beveling
or chamfering ‘38A in FIGURE 18 which assures smooth
FIGURE 13 is a fragment of an armature drawn to
the same scale as FIGURES 10, 11 and 12 illustrating
sliding movement of handle 37 on guide bar ‘38.
A suitable means such as coil spring 40! returns the
the overlapping of the insulation material ends in the last
knife to the position shown in FIGURE 1 whenever it
slot;
FIGURE 14 is a fragmentary vertical section of the 15 is not being used to sever insulating material. The guide
bar is rotatably supported at one end in the cantilever
track and showing the carriage thereon in end eleva
number 27 and at the other end in a suitable bracket
41. This bracket 41 has a set screw '42 in it by means
of which the position of the knife relative to an armature
FIGURE 15 is the electrical wiring diagram for the
20 in the machine can be determined by loosening the set
machine;
tion; broken lines illustrate hidden and adjusted parts;
the scale used is the same as that used in FIGURE 2;
screw and pivoting the guide bar together with the knife
in the cantilever support 27 and bracket 41. When the
knife is appropriately adjusted, that is to say, about one
FIGURE 16 is a fragmentary plan view of the paper
handling mechanism drawn to the same scale as FIG
URE 2 but with elements broken away to illustrate con
struction more fully and to show positioning of the in
sulation material;
eighth of an inch from the surface of an armature mount
25 ed in the machine, thumb set screw 42 is tightened to
FIGURE 17 is a partial vertical section partial side
elevation of the bracket supporting one end of the knife
guide bar drawn to the same scale as FIGURES 10; 11,
12 and 13; broken lines illustrate hidden parts;
lock the knife in position.
A suitable means for presenting insulating material to
the timing, gears and limit switch, it is drawn to the
in table top 21 is an insulating paper clamp 47.
The insulation clamp 47 is actuated by solenoid 48
whenever the machine begins a cycle of operations. As
the clamp rises, it engages the insulating material and
the armature is in the form of a continuous roll such
as that shown at 44 supported on any suitable bracket
FIGURE 18 is a vertical section taken on the line 30 such as those designated 45 in FIGURE 1. As the in
sulating material, usually treated paper, reaches the area
184-18 of FIGURE 16; it is drawn to the same scale as
in which an armature is mounted, it extends under the
FIGURE 17; broken lines illustrate hidden parts; and
bar 46. Below this bar and working through an opening
FIGURE 19 is a fragmentary end elevation showing
same scale as FIGURES 3, 8 and 9.
In FIGURE 1 the invention may be seen supported on
a cabinet—like frame designated 20 having a table plate
21 on itsrtop. Secured to top 21 are means for support
ing an armature thereon consisting of a tailstock mem
ber 22 slidably mounted on ways 24 on which the tail
stock is alternately slidable or locked by means of lock
handle 25. The other end of an armature is supported
inside of a track element 26 in a manner described
in detail just below. Track element 26 is pivotally se
cured to the table top 21 by means of cantilever support
number 27 and rear support number 28.
Track element 26 is hollow and contains within it a
bushing element 29 that can be seen in FIGURE 4 and
which is held in place by a set screw 36. By this means
the bushing may be held in any of numerous longitudinal 50
positions within the track element 26. The bushing 29
provides support for one end of an armature shaft and
tailstock 22 supports the other end of the armature so
forces it against bar 46, thereby holding the insulating
material against movement while its end is inserted into
the ?rst slot of the armature. When solenoid 48 is
energized, it pulls down core 49, thus pivoting arm 50
about pin 51. Such pivoting action of arm 50 causes
the clamp 47 to be moved upward by the adjusting screw
assembly 52. A suitable biasing means such as coil
spring 54 returns the arm 50 to a release position when
ever solenoid 48 is de-energized. Just beyond bar 46
is a friction roller 55 around which insulating material
such as that designated 56 may be reaved in order to
present it to the armature.
A smooth approach for insulating web 56 to an arma
ture in the machine is provided by surface plate 57 which
is curved to receive and guide the web appropriately at
its front and rear 58 and 58A, respectively. ' An opening
59 in surface plate 57 permits clamp 47 to slide through it.
that it is rotatably held above the table top 21.
On the other side of a mounted armature 60 from the
As the armature is inserted in the rack member 26 and 55
friction roller 55 is a movable friction roller 61. Roller
61 is supported movably by suitable means such as the
yoke 62 appropriately pivoted on bracket 64. The outer
end of the arm of yoke 62 is pivotally engaged by an
vertical alignment with the ?xed insulating material guide
‘32. Stated another way, a tangent to the roll 31 on the 60 extension 65 of the core 66 of solenoid 67. When sole
extended therein as far as possible, the end of the core
of the armature engages the rotating stop roller member
31, some portion of the periphery of which is always in
workpiece side and normal to the support also passes
through the workpiece edge of the guide 32. Thus, the
edge of insulating material presented to the armature, the
position of which is'determined by ?xed guide 32, ‘and
noid 67 is energized, the extension 65 is moved upward,
thus lowering the paper roller 61. A ‘suitable biasing
means such as spring 68 moves paper roller 61 towards
armature 60 whenever power is released or moved from
the edge of the core of the armature are automatically 65 solenoid 67.
Directly below the armature 6t} and arranged on ma
aligned with each other. When the armature is inserted
chine for radial movement relative to the armature is
properly into the bushing 29, only a short portion of
the insulating material ‘insertion blade 69. Blade 69 is
its end engages the bushing. The other edge of insulat
rigidly clamped to divided block 70A and B, the two por
ing material being presented to an armature is guided
by the movable insulating material guide 34. It slides on 70 tions of which are suitably biased apart by a means such
as spring 71. If the machine extends blade 69 farther
the guide '35 and can be secured in position by the hand
than the depth of the slot in an armature, divided block
nut 36. Movable insulating material guide 34 is appro
70 yields to prevent damage. Block halves 70A and B
priately adjusted to match the width of Whatever insulat
ing material is being presentedrto the armature in rela
are held ttogether slidably by conventional means such
tionship to the ?xed guide 32.
'
'
75 as machine screws slidably extending through one block
3,061,909
6
5
tending arm ‘105 to which is pivotally connected the
and threaded into the other. This structure is omitted
from the drawings to avoid cluttering them with known
indexing linkage 106. When indexing linkage 106 moves
structures not necessary to understand the invention.
upwardly to carry arm 105 up, the frame along with the
track elements 94 and 26 are tipped an appropriate num
Di~
vided block 70 is suitably supported for radial move
ment relative to the armature by a bracket 72 and Ways
74 which con?ne it while leaving it free to move verti
ber of degrees for the particular armature being insu
on cam 79 and when forced down by action of the cam
cam 113. A cam follower 115 rides in the groove 116.
of cam 114. When cam follower 115 is in the groove
116 of box cam 114 as to be near shaft 80, the arm 104
lated. Since reciprocation of the carriage must be car~
ried on both in the vertical and in the tipped or indexed
cally. Divided block 70A and B is biased down away
positions, the articulating link 103 is used to provide a
from armature 60 by suitable means such as spring 75
connection between the carriage reciprocating arm 104
which is anchored to the bracket 72 by means of pin
76 and is secured to the block by means of pin 77. Pin 10 and the carriage 95 that will adapt itself to either posi—
tion of the track. The operation of an indexing stop
77 is free to slide in opening 78 in bracket 72.
adjustment 107, shown in ‘FIGURES 1 and 2, will be de
Paper insertion blade 69 is moved into an inserting
scribed more fully hereafter.
position by means of an appropriate cam 79 mounted
On the front or cantilever track support is also seen
on the main drive shaft 80 which is connected to a source
an indexing or armature slot locating dog 108. This
of power through a conventional electric clutch 81. Suit
dog 10?» is biased toward an armature located in the
able conventional means such as sprocket 82 and roller
machine by suitable means such as spring 109. When
chain 82A connect the clutch to any suitable source of
an armature has been properly indexed by the pro?ling
power which is not shown. A keeper 83 secures sprocket
?nger and carriage structure, the point 110 of dog 108
82 on shaft 80. An insertion blade driving arm 84 is
pivoted appropriately as at 85 to a rigid frame member 20 engages both sides of the top slot in the armature.
As shown in FIGURES 3, 4, 5 and J6, the carriage
36. One end of the arm 84 is connected by appropriate
reciprocating arm 104 extends below the table top 21
adjustable linkage 87 to the divided block 70A and B
through the opening 111 and is pivoted suitably as at
by any suitable means as screw 88. The other end of
112 to permit it to pivot in response to the action of box
arm 34 carries cam follower 89. Cam follower 89 rides
79, pivot arm 84 raises the insertion blade and drives
insulating material 56 into a slot 90 of armature 60.
is positioned with its top in the rear position as shown
In FIGURE 1 also may be seen the elements that ap—
in FIGURE 4 As seen in FIGURE 3, arm 104 is piv
pear on top of the machine involved in forming the in
sulating material to the pro?le of the slot in the armature 30 oted to a rigid frame member 117 by suitable means
such as a stud or the like, the head 118 of which appears
after the material has been inserted by the blade 69.
in FIGURE 3.
The pro?ling ?nger also acts to index the armature from
As shown in FIGURES 3, 4, 5 and 6, the indexing
one slot to the next as is explained fully below.
linkage 106, which is seen to be conventionally adjust
Rigidly secured to track member 26, which is pivot
ally supported by cantilever support 27 and rear sup 35 able, is pivotally secured to an indexing arm 119. This
indexing arm is pivotally supported on a ?xed frame
port 23, are the front and rear frame ends designated 91
member 120 as indicated at 121. Arm 119‘ is also actu
and 92, respectively. An upper track member designated
ated by a cam 122, referred to as the indexing cam,
94 is also rigidly secured between the frame ends 91 and
which engages and moves a cam follower 124 which is
92. Riding on the track is a carriage having a frame
in turn secured to the indexing arm 119. When cam
95 which rotatably supports between its sides the con
toured rollers 96, 97 and 98 in FIGURES 4, 5, 6 and
7. Two of these rollers, 96 and 97, engage track ele
ment 26 on the top. The third one, 98, engages the
track element from the bottom which location of rollers
stabilizes the carriages against up and down tipping on
a vertical axis and also lateral twisting about a vertical
axis.
Twisting is resisted because the contoured rollers
engage the sides as well as the top of the track element
26 as seen in FIGURE 14. At the top of carriage 95
are two additional rollers 99 and 100, respectively, that
engage track element 94 to prevent lateral tipping about
a horizontal axis of the carriage 95. Carriage 95 is
nevertheless freely reciprocative on the track element 26
and 94 and its stabilization thereon does not inhibit this
longitudinal sliding action.
Stabilization of the carriage is extremely important in
that the carriage supports and must place accurately the
pro?ling ?nger 191. As the head 102 of this pro?ling
?nger 191 must enter the slots 90 in the armature 60
follower 124 is engaged by the high point of cam 122,
the frame for the track is positioned vertically if the link
age 106 is properly adjusted. When a low portion of
the cam 122 is positioned under the cam follower 124,
then the arm 119 is tipped by any suitable biasing means
such as spring 125 to lower that end of the arm 1119 to
which spring 125 is secured. The arm 119 pivoting about
its pivot 121 will raise the linkage 106 and thereby lift
the extension arm 195 of the rear track frame member
92 which will cause the track and therefore the carriage
to tip. This tipping of the track moves pro?ling ?nger
101 in an arcing or angular path about the axis of rota
tion of the armature to cause it to move one slot from
its previous position. As arm 119 is pivoted to index
55 the armature, the arm engages the stop 126 which is con
trolled by the indexing stop adjustment 107. Indexing
stop 126, as adjusted by 107, determines the amount of
arcing or angular motion of the pro?ling and indexing
?nger 101 around the axis of rotation of the armature
accurately enough to avoid tearing the insulating mate 60 60. Spring 125 will move 119 as far as the stop will
permit it to do. Thus, when armatures having different
rial 56 that has been placed in the slot by blade 69, it is
apparent the action of carriage 95 must be precise. Re
numbers of slots are insulated in the machine, the stop
126 must be adjusted properly for each different arma
ciprocating movement is imparted to carriage 95 through
ture by 107. To minimize the noise occasioned by en
the articulating link 103 which connects the carriage to
the reciprocating arm or the carriage arm 104.
As seen in FIGURE 4, the pro?ling ?nger 101 is smaller
along its shank than the portion of head 102 designated
1021’. It is only the part 1021’ that carries the pro?le
65 gagement of arm 119 with stop 126, a pad 127 may be
inserted in the arm 119 at the point where it engages stop
126.
.
Fixed frame elements 86 and 120 support the main
or shape of the armature slot. Portion 102P is narrow
shaft 80 which carries all the cams which are convention
to minimize friction as the pro?le of the slot is formed 70 ally keyed toshaft 80. Suitable means secure the shaft
in the paper. It is shown as preferably amounting to
to the ?xed frame elements such as the bearing assem
less than 25% of the length of pointed head 102 and it
blies 128 on frame element 86 and 129 on frame mem
is not necessary for it to be more than one-half inch in
ber 120.
linear measure.
by being secured to the table top 21 and also by such
The rear track frame element 92 has a laterally ex
Frame members 86 and 120 are suitably braced
75 means as tierod 130 and rigid frame element 131.
ape-1,909
.
7
55
>
the other side of the main line switch 145. Whenever
switch 145 is closed, therefore, the motor 147 will 0})
erate. An indicator light 159 is connected in parallel
linking gear 133, the spur gear portion 133A of which
to the motor to glow ‘whenever the motor is in operation
engages and drives the timing gear 136. Double-linking
A stop switch 151 is inserted in the line leading to the
gear 133 is movably supported on arm 134 and secured 01
cycle-start switch 152. Lead 153 connects these tWO
rotatably thereon by a thumb nut 135. Armatures hav
switches. Stop switch 151 is ‘biased closed while the
ing varying numbers of slots require different numbers
cycle-start switch is biased open. A lead 154 connects
of rotation of shaft 36 to complete an armature winding
the switch 152 to one side of a coil 155 that operates the
cycle. ‘For example, a fourteen slot armature requires
that number of rotations of shaft 80, as only one insula 1,0 main relay for the system. The other side of relay coil
155 is connected to line 141 via lead 156. Thus, when
tion insertion stroke is accomplished in one rotation of
ever switch 145 is closed and the operator pushes closed
shaft 89. In the example used, therefore, a gear 133
the cycle-start switch 152, a complete path for current
would be used that would provide a ratio of fourteen to
may be traced ‘from line 142 through the main switch
one between gears 132 and 136. For an armature having
a larger number of slots, a di?erent gear providing the 15 and successively line 149, stop switch 151, lead 153, cy
cle-start switch 152, lead 154, coi-l 155, 1and lead 156.
higher gear ratio is substituted at 133 by removing thumb
With coil 155 thus energized, all of the points 157
nut 135. Movable arm 134 is relocated to accommodate
At the right hand end of shaft 80 in FIGURE 3 there
is-a spur gear 132 that engages the changeable, double
the different gear, as necessary. Timing gear 136 car
ries a cam-like member 137 to engage a switch actuating
arm 138 that actuates a switch 139 to break the main
circuit to electric clutch S1 at the end of a cycle to deter
mine the end of an armature insulating cycle.
through 159, respectively, are closed.
As soon as the
relay points close, complete circuits may be traced from
stop switch 151 through lead 166 and lead 161 to the
solenoid half of switch 139, designated ‘by the letter S.
Lead 161 connects the coil 67, the paper roller solenoid,
While switch L—139 generally determines the end of
an armature winding cycle, the carriage arm limit switch
140 is connected in parallel to points 159 controlled in
part by switch L—139, as shown in FIGURE 15. Though
points 159 are open, switch 140 will continue to ener
gize clutch coil 81C until the carriage or pro?ling arm
104 has resumed its rearward position, as shown in EEG
to the switch 1395. Solenoid 67 is then connected via
lead 164 back to line 141. This circuit activates the
paper roller solenoid to lower roller 61 from armature
66.
As soon as the relay points 157 through 159 ‘are closed,
is not engaged by the cam-like element 137, the cycle
engaged in driving the shaft 86, rotation is imparted via
spurred gear 132 through double-linking gear 133——133A
electric clutch 81 is engaged. Power is applied through
line 161) and lead 165 to one side of relay points 159;
the other side of relay points 159 is connected to the coil
URE 4. Thus, the machine will stop ‘automatically only
for clutch 81 and here designated 810 (to make a di
when the pro?ling ?nger 101 has been withdrawn from
rect correlation between the number assigned to the coil
an armature.
and the unit which it operates). A lead 167 ‘connects
Switch 139 is a double-pole, single-throw switch, the
the other side of coil 81C to the combination terminal
halves of which operate in reverse order to each other.
That is to say, when the arm 138 is engaged by the cam 35 strip recti?er 144 (recti?er 144 is not inventive and in
ternal connections to aid in tracing circuits are repre
like element 137 of timing gear 136, one half of the
sented by broken lines) ‘and through an internal connec
switch serving ‘as the main cycle limit switch is open.
tion to line 141 to provide a complete circuit to ener
At the same instant, the other half of the switch is closed
gize coil 81C. With the clutch energized and therefore
by reason of the arm action. Conversely, when the arm
limit half of the switch is biased closed while the other
‘half is biased open. The half of switch 139 that is open
when arm 138 is free from cam 137 is part of the pow
er circuit to the paper insulation clamp solenoid 48 and
insulation roll solenoid 67. Power for the paper roller
control solenoid also passes through one of the sets of
points of the main relay, however. For this reason when
the machine is at the end-of-cycle position (with arm 138
enagged and ‘actuated by the cam-like element 137 of
timing gear 136) and power is applied to the machine
generally, the solenoid 67 for the paper roller is immedi
ately actuated holding the roller 61 down in the posi
tion sshown in FIGURE 3. On the other hand, the
solenoid 4-8 for the paper clamp is not energized and ac
tuated to cause the clamp 47 to engage the insulating ma
terial until the main relay is closed by ‘actuating the cy
cle-start switch. Until the cycle-start switch is closed,
therefore, the insulating material 56 may ‘be manipulated
through the feed system freely.
The cycle-start switch and the main relay are entirely
electrical in operation and are not associated for me
chanical cooperation with any of the mechanical structure
shown in the drawings. Therefore, these two switches
appear only in the electrical wiring diagram, FIGURE
15, which will now be explained.
An electrical circuit to operate the machine is shown
in FIGURE 15, the electrical wiring diagram.
Power
to the timing gear 136. As timing gear 136 rotates, cam
like member 137 is moved from under arm 138 which al
lows switch 139 to assume its biased position.
‘Prior to the biasing of switch 139, however, another
circuit is temporarily established through lead 168 from
switch 1398 to points 158 of the relay. Another lead
16?) connects to coil 48 which is the paper clamp sole
noid. A lead 170 connects coil 43 via line 164 to the
main line 141. Thus, until switch 1395 is biased open
after the initial revolution of drive shaft 80 there is a
complete circuit through the coil of the insulation mate
rial clamp solenoid 48.
As soon as switch 1398 is
opened, however, by rotation of timer gear 136, the cir
cuit to both of solenoids 67 ‘and 48 is interrupted. At
this instant, the clamp 47 releases the insulating material
while the roller 61 engages it. Thus, as far ‘as engaging
the ‘insulating material is concerned, these two paper en
gaging devices operate in mutually exclusive manner.
Both_of these devices have for a primary purpose the
securing of the insulating material against axial move
ment relative to the armature upon frictional engagement
by the pro?ling device. In ‘addition, clamp 47 holds in
sulation 56 ‘against advancement during the initial inser
tion blade stroke.
At’ the same instant that switch 1398 is forced open by
rotation of the timing gear 136, the other portion of the
switch designated 139L, for the portion of that switch that
from a conventional source is applied across the main
acts as the main cycle limit switch, is forced closed by the
lines 141 and 142. Line 14-1 continues without inter
ruption to one terminal of a combination terminal strip 70 same action. As the relay holding points 157 have pre
and recti?er 144. Line 142 goes ?rst to the main con
viously been closed by the energization of coil 155, a
trol or off-on switch 145. This switch controls power to
complete electrical circuit will then be completed accord
the entire mechanism. Connected directly to line 141 by
ing to the following sequence. Power from 142 through
‘lead 146 is the motor 147. A second lead 148 connects
main line switch 145 through lead 14-9 through switch
the other side of the motor circuit to a line 149 from
151 through a short lead 171 to switch 139L, through
3,061,909
16
9
switch 139L to lead 172, through points 157, lead 173,
through coil 155, lead 156 and back to line 141. As
long as the switch 139 is unmolested therefore, the main
relay will remain closed and the circuit through the clutch
coil 810 will continue to be energized, thus driving the
mechanism. As soon as cam 137 of the timing gear 136
engages the arm 138 to move switch 139 to its cammed
‘If pro?ling ?nger head 102 is too high or too low
with respect to the slot of the armature, the pro?ling ?nger
may be loosened at the carriage and slid vertically until
it is the proper height. If the pro?ling ?nger does not
align with the slot in the armature at the bottom when
point 110 of indexing dog 168 is engaging the top slot,
then linkage 106 must be adjusted until the pro?ling ?nger
does align with the armature slot. Further applications
position, however, the holding circuit for the coil 155 will
of power with o? and on switch 145 are made until the
be interrupted and spring tension will return the relay
points 157 through 159 to the position illustrated in the 10 device asumes the indexed position. At this point dog
point 116 of indexing dog 108 should be in a slot also.
wiring diagram of FIGURE 15.
If it is not, adjustments of the indexing stop 126 are made
At this point the clutch coil 81C would be de-energized
with the thumb screw 107 until proper indexing is
if the pro?ling arm or carriage reciprocating arm 104
achieved. The device is then adjusted properly for the
is in a rearward position. If the arm 104 is not back
so as to engage pro?ling limit switch 140, that switch will 15 particular armature. Prior to this point, the proper tim
ing gear 133 has been inserted in the machine in order
be biased closed providing an alternate circuit for cur
to provide the proper length of cycle for the particular
rent from line 165 through 174 to coil 81C, thus com
armature being insulated. The start button is then pushed
pleting a circuit through line 167 and the recti?er ter
and the machine allowed to run through a cycle in order
minal strip 144 back to line 141. The machine will con
to bring it back to the beginning of the cycle again.
When the machine is thus adjusted, everything is in
readiness to insert the insulating material and begin
which time, with limit switch 139L standing open, the
insulating the armature. The insulating material 56 is
mechanism will come to rest and only the motor will con
inserted manually in the guides 32 and 34, the latter
tinue to rotate.
Lead 173, inserted because actually present in the cir 25 being adjusted if necessary to allow just enough clear
ance for the insulating material to slide easily between
cuit, has to do only with the internal operation of recti
them. Insulating material 56 is then pushed under bar
?er 144- which is a commercially available unit.
46 and roller 55 to assume a position shown in FIGURE
The only portion of the circuit which remains to be
3 which is to say about one-eighth of an inch short of
discussed is the job switch 176. Via line 177 the jog
the edge of the slot to the right of blade 69 ‘as viewed
switch is connected to the power lead 165 and through
in that ?gure. With the main line switch 145 in the
line 178 switch 176 is connected to the clutch coil 81C.
on position, the start button 152 is then pushed and
The manner of using the jog switch is this. Since the
held down. In so doing the relay 155 is energized,
machine will never stop in the middle of a sub-cycle, that
thus closing all the relay points as described in con
is, until the forward and rearward stroke of the carriage
is completed by reason of limit switch 140 in order to 35 nection with the wiring diagram. This being the case,
the coil 48 for the insulating material clamp is energized,
check out any intermediate position of the device, an
thus moving the clamp into the clamping position as
alternate method of supplying power to coil 81C must be
shown in FIGURES 3, 8 and 9. With the insulating
evolved other than through the main running circuit.
material thus held against being pulled forward, the
This circuit is provided by holding jog switch 176 in an
on position and then by making brief application of power 40 machine proceeds through a cycle, the ?rst step of
which consists of the advancing of the pro?ling finger
through main line switch 145 moving the mechanism to
tinue' to operate therefore until the carriage reciprocating
arm 104 comes back and opens the limit switch 149 at
161 into an empty slot and indexing the armature one
any desired position and stopping. As soon as the car
riage reciprocating arm 104 has moved forward as to carry
the carriage towards an armature installed in the ma
slot.
FIGURE 1 also shows the control panel 175 which
may be seen to support switches 145, 151, 152 and 176
126. Stop 126 has previously been adjusted ‘for proper
indexing. With the machine thus indexed, slight addi
This position is illustrated in FIGURE 5 except
the insulating paper 56 would not be in the slot as
shown. Continued rotation of shaft 80 carries cam
chine, the jog button may be released since limit switch
140 would then be closed and brief applications of power 45 182, as shown in FIGURE 6, to a position having ‘a
low spot adjacent the cam follower 124 which allows
to clutch 81C may be made through that switch using
spring 125 to pivot arm 119 so that it engages stop
switch 145 to control the application of power.
as well as the indicator light 150.
An access door 180 50 tional rotation of shaft 8% causes the insertion blade
69 to be moved upwardly as cam follower 89 rides up
on to the high point of cam 79. Arm 84 is therefore
provides access to the timing gear section of the machine
to permit the installation of a double, linking gear appro
priate to the armature being insulated. Various pro?le
devices for the different shapes of armature slots as well
as different linking gears are stored in the cabinet 20 and
access is gained through cabinet door 181.
Operation
pivoted as shown in FIGURE 7, thus accomplishing
the insertion of paper in a slot of the armature as shown
clearly in FIGURES 7 and 8.
Continued rotation of shaft 80 via the clutch 81 causes
further rotation of the box cam 114 so as to again
bring a point in the groove near to shaft 80 adjacent
In operating the machine the ?rst step is to place an
the cam vfollower 115. This causes the arm 104 to
armature in the machine of the type that is to be insulated. 60 withdraw the carriage 5'15 and pro?ling ?nger 101 to
The end of the armature shaft is inserted into track ele
a rearward position as shown in FIGURE 4. As soon
ment 26 until it engages bushing 29. Bushing 29 should
as the carriage is in a rear position, the indexing arm
be moved back in track element 26‘ until only about
engages a high point in the cam, thus causing it to
a quarter of an inch of the armature is engaged by the
pivot to the position shown in FIGURE 4, i.e. with
bushing. When the armature 60 engages the roller stop 65 the carriage in a verticle position again.
31, tailstock 22 is advanced until it engages ?rmly the
In the meantime, as the cam has been rotating, it
other end of the armature shaft. Lock handle 25 is then
has caused the insertion 'blade 69 to be Withdrawn from
manipulated to secure the tailstock in this position. The
the slot of an armature and the pro?ling ?nger again
machine, by reason of its having completed a previous
cycle of insulating, will be in the position illustrated in 70 advances this time forcing the insulating material
56 to conform to the shape of the slot as shown in
FIGURES v1 and 4. With index dog 108 engaged in an
FIGURE 9. The carriage is again tipped by the in
armature slot and jog switch 176 held in the contact
dexing arm 119 and the position assumed by arma
position, momentary applications of power are made with
ture 60 is illustrated in FIGURE 10.
the main switch 145 till the head 102 of pro?ling ?nger
At a point just prior to turning armature 60 to the
101 is about to enter an armature slot.
75
.
.
1i
.
.
.
.
position shown in FIGURE 10, however, the timing
gear 136 has rotated far enough to drop arm 138 from
the cam-like element 137 on timing gear 136. For this
reason switch 139 has assumed its biased position which
is to say holding the relay closed via the holding points
139L and breaking the circuits to both the solenoid
.
12
.
the means for pivoting said track at times comprises;
linkage secured to said track and said frame; a track
cam follower on said track linkage; and a cam rotatably
secured to said frame and engaging said track cam fol—
lower to force said track to a reference position; a stop
secured to said frame near said track linkage; a resilient
for the movable paper roller 61 and the paper clamp
element secured to said frame and engaging said track iink~
age and urging it towards said stop.
tion by being energized and the other is held in opera
4. The armature insulating machine of claim 3 in which
tion by being energized, when both are de-energized, 10 means for reciprocating said carriage on said track to
the paper clamp ceases to operate as shown in FIGURE
produce axial movement of said pro?ling ?nger relative
10 while the paper roller 161 engages the insulating
to an armature on said frame comprises; linkage secured
material to hold it against ‘axial movement as a result
to said carriage and said frame; a carriage cam follower
of friction applied when the pro?ling ?nger enters the
secured to said carriage linkage; and a box carriage cam
slot or withdraws without interfering with advance of
rotatably secured to said frame and embracing said car
the insulation.
,
riage cam follower.
As shown in FIGURE 11, insertion blade 69 pushes
5. The armature insulating machine of claim 4 in which
47.
Since one of these elements is held out of opera
insulating material into the bottom slot as the pro?ling
?nger is indexed to the indexed position. As the in
said means for presenting insulating material to an armce
ture secured to said frame comprises; means secured to
dexed ?nger is withdrawn, straightened and reinserted,
said frame for holding a supply of insulating material;
a ?xed insulating material guide secured to said frame;
an armature stop rotatably secured to said frame adja
the insertion blade 69 is withdrawn as shown in FIGURE
12. This cycle is repeated over and over until the
entire armature has been insulated. As the last step
cent one end of said means for supporting an armature;
in the automatic operation, the pro?ling ?nger indexes
some portion of said armature stop member periphery
the slot designated 90L in FIGURE 13.
25 being in line vertically with said ?xed insulating material
At this point the machine automatically stops as de—
guide; a movable insulating material guide secured to
scribed in connection with the wiring diagram by reason
said frame.
of both the limit switch 139 and :the limit switch 140
6. The armature insulating machine of claim 5 further
being held open. At this point the insulating material
characterized by an insulating material clamp secured to
is withdrawn slightly manually and knife handle 37
said frame between said means for holding an armature
is grasped and moved from right to left as shown in
and said means for supporting a supply of insulating ma
FIGURES 2 and 16. The armature is then withdrawn
terial.
from the machine by releasing lock handle 25 of tail
7. The armature insulating machine of claim 6 further
piece 22 and the armature that has insulating material
characterized by a roller on the side of said means for
wrapped around it is laid aside. The next armature 35 supporting an armature away from said insulating mate
to be insulated is inserted in the machine, the paper is
rial supporting means for frictionally engaging insulating
properly set up and the machine started on its cycle.
material to resist axial movement thereof relative to an
While the machine is running through its second cycle,
armature to which the insulating material is being ap
the operator manually inserts the last half of the in
plied.
sulating material for the slot designated 99E. Thus, 40
8. The armature insulating machine of claim 7 in which
as can be seen in FIGURE 13, the last slot has the
said insulating material clamp and said roller act in mu
overlapping ends of the insulating material down inside
tually exclusive order to resist axial movement of said
the slot.
insulating material.
It is apparent that many modi?cations and variations
9. The armature insulating machine of claim 2 in which
of this invention as hereinbefore set forth may be made
said track comprises spaced apart elements rigid in re
without departing from ‘the spirit and scope thereof.
lation to each other; and said carriage has portions there
The speci?c embodiments described are given by way
of engaging said track elements for stabilizing said car
of example only and the invention is limited only by the
riage on said track and to resist all movement therebe
terms of the appended claims.
tween except reciprocation.
What is claimed is:
10. An armature insulating machine comprising; a
50
1. An armature insulating machine comprising a frame,
frame; means secured to said frame for supporting an
means for supporting rotatably an armature on said
armature rotatably thereon; means secured to said frame
frame, means for presenting insulating material to an
for presenting insulating material to an armature mounted
armature secured to said frame, an insertion blade se
on said frame; means secured to said frame for inserting
cured to said frame and radially movable relative to an
insulating material into the slots of an armature mounted
armature mounted thereon, a' pro?ling ?nger mounted on
on said frame; a track pivotally secured to said frame
said frame and axially movable relative to an armature on
to pivot about the axis of said armature supporting means;
said frame, and means for indexing said armature compris
an indexing means consisting of a carriage slidably sup
ing means for imparting indexing motion to said pro?l
ported on said track; a pro?ling ?nger secured to said
ing ?nger relative to said means for supporting rotatably 60 carriage; means secured to said frame and to said carriage
an armature.
for reciprocating said carriage on said track; and means
2. The armature insulating machine of claim 1 in which
secured to said frame and said track for pivoting said
said indexing means comprises a track mounted onto said
track in relation to said frame, said pro?ling ?nger being
frame to pivot about the same axis as an armature in
positioned in one slot of an armature mounted in said
said supporting means; a carriage reciprocally movable on 65 machine when said means for inserting insulating mate
said track toward and away from said means for ro
tatably supporting an armature; said pro?ling ?nger car
ried by said carriage; means secured to said carriage,
rial is inserting insulating material into another slot of
an armature mounted in said machine.
11. The armature insulating machine of claim 10 in
means secured to said track for pivoting it in one direc
which said track has a neutral position and an indexing
tion after said carriage is moved toward said means for 70 position; linkage attached to said track; a cam rotatably
supporting rotatably an armature with said pro?ling ?n
ger in engagement with an armature therein and in the
opposite direction after said carriage is moved away from
said means for supporting rotatably an armature.
3. The armature insulating machine of claim 2 in which
secured to said frame adjacent said linkage secured to
said track; a cam follower secured to said linkage and
engaging said cam for moving it positively to said track
neutral position; a stop secured to said frame; resilient
means engaging said linkage attached to said track for
3,061,909
13
moving it to said top; said stop determining the indexing
position of said track.
12. The armature insulating machine of claim 11 in
which said pro?ling ?nger comprises an elongated ele
means on said carriage frame and engaging one of said
track elements for stabilizing said carriage on a third axis
relative to said track, and means on said carriage for
ment having a pro?ling head at one end comprising only
a small portion of the length thereof and the balance of
gitudinally movable With respect to said track; and said
means secured to said carriage for stabilizing said car
said pro?ling ?nger being narrower than said pro?ling
riage frame on two axes are rollers.
securing a pro?ling device thereto; said carriage being lon
head.
17. The carriage and track structure of claim 16 in
13. The armature insulating machine of claim 12 in
which said rollers are contoured on their peripheries to
which the means for reciprocating said carriage on said 10 engage a track element as to resist motion in with re
track comprises carriage linkage secured to said carriage
spect thereto on two axes.
and said frame; a carriage cam follower secured to said
carriage linkage; and a box cam rotatably secured to said
frame and embracing said carriage cam follower on said
18. The carriage and track structure of claim 17 in
which the means on said frame engaging said other track
carriage linkage for positively moving said carriage link 15
age in two directions.
element comprise rollers.
19. The carriage and track structure of claim 15 in
which all of the means on said frame engaging said track
14. Structure for presenting insulating material to an
elements are rollers.
armature in an armature insulating machine having a
20. An armature insulating machine comprising, a
frame comprising; means secured to said frame for hold
frame, means secured to said frame for supporting an
ing a supply of insulating material; a ?xed insulating ma 20 armature rotatably thereon; means secured to said frame
terial guide secured to said frame; a rolling member se
for presenting insulating material to an armature mounted
cured to said frame near said ?xed insulating material
on said frame; means secured to said frame for inserting
guide; some portion of said rolling member periphery
said insulating materials in the slots of an armature
being in line vertically with said ?xed insulating material
mounted on said frame; means secured to said frame for
guide; a movable insulating material guide secured to 25 forcing insulating material that has been inserted to
said frame; an insulating material clamp secured to said
conform to contours of the slots of an armature mounted
frame between the means for holding an armature and
in said frame; said means for forcing said insulating ma
said means for supporting a supply of insulating material;
terial to conform to the contours of the slots of an arma
and a roller on the side of said means for supporting an
ture mounted in said frame remaining in a slot of said
armature away from said insulating material supporting 30 armature While said means for inserting insulating ma
means for frictionally engaging insulating material to re
terial is inserting insulating material into another slot of
sist axial movement thereof relative to an armature to
an armature mounted on said machine.
which it is being applied.
15. The armature insulating machine of claim 14 in
which said insulating material clamp and said roller en~ 35
gage insulating material being applied to an armature
secured to said frame in a mutually exclusive order.
16. A track and carriage for supporting an armature
insulating pro?ling device comprising; spaced track ele
ments rigid with respect to each other, a carriage, frame, 40
References (Iited in the file of this patent
UNITED STATES PATENTS
1,827,740
2,111,457
2,363,760
Eaton ______________ __ Oct. 20, 1931
McCaffrey ____________ __ Mar. ‘15, 1938
Rafter ________________ __ Dec. 1, 1942
UNITED STATES PATENT OFFICE
CERTIFICATE OF CORRECTION
Patent No, 3,061,909
November 6, 1962
Melvin J, Straub: et al,
It is hereby certified that error appears in the above numbered pat
ent requiring correction and that the said Letters Patent should read as
corrected below.
_
'
Column 3, line 55, for "rack" read ~~= track ~—-; column 4,
line 74, for "ttogether” read —— together =-—‘; column 6, line 25
for "113“ read —— 114 -'—; column 7, line 49, for "enagged" read?
—— engaged“; line 53, for "sshown" read'—— shown ——; column
2, line 29, for "job'? read -='~ jog —=—; column 10, line 10, for
asnmes" read —— assumes ——; column 13, line 40, after "carriage"
strike out the comma; same line, after "frame,"- insert ~
a
EAL)
est:
IEST w. SWIDEB.
esting Officer
DAVID L- LADD
9
Commissioner of Patents
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