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Патент USA US3032869

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May 8, 1962
K. H. ANDREN
3,032,860
APPARATUS FOR PRODUCING ELECTRICAL CONDUCTORS
Filed Dec. 16, 1957
5 Sheets-Sheet 1
INVEN TOR.
BY
'
t
A T'TOR/VE'YSv
May 8, 1962
K. H. ANDREN
3,032,860
APPARATUS FOR PRODUCING ELECTRICAL CONDUCTORS
Filed Dec. 16. 1957
5 Sheets-Sheet 2
May 8, 1962
K. H. ANDREN
3,032,860
APPARATUS FOR PRODUCING ELECTRICAL counucwons
Filed Dec. 16, 1957
.m.Aow
5 Sheets-Sheet 3
May 8, 1962
3,032,860
K. H. ANDREN
APPARATUS FOR PRODUCING ELECTRICAL CONDUCTORS
Filed Dec. 16, 1957
5 Sheets-Sheet 5
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INVENTOR
United States Patent 'O??ce
3,932,360
Patented May 8, 1962‘
2
i
.
3,032,860
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improved apparatus for producing electrical conductors
each having agterminal ?rmly attached to its opposite‘
.
APPARATUS FUR PRQDUCENG ELECTRICAL
I
ends, from axially advancing wire stock immediately,
CONDUCTGRS
Karl H. Andrea, West Allis, Win, assiguor to Artos
Engineering Company, Milwaukee, Wis, a corporation
of Wisconsin
after the successive lengths of Wire have been severed
5
from the stock and without displacing the severed lengths
laterally of their direction of advancement.
,
_
An additional object of this invention is to provide an'
Filed Dec. 16,1957, §er. No. 7tl2,86'7
6 Qlaims. (6. 29-4555)
improved apparatus for rapidly and effectively producing
a succession of electrical conductors each having a termié
The present invention relates generally to improvements
10
in the art of producing electrical conductors, and it re;
lates more speci?cally to an improved apparatus for man
ufacturing successive conductors each comprising a de?
nite length of wire severed from a continuous stock sup
ply and having a terminal attached to each of its opposite 15
ends.
rial applied to each of its opposite ends by severing lengths
of wire from longitudinally fed stock in a ?xed zone, and
by simultaneously attaching terminals to both of the‘
severed ends of the wire and stock within the severing,
zone while the severed lengths remain in axial alinement
with the wire, stock entering the zone.
These and other more speci?c objects and advantagesv
of the invention will be apparent from the following
The primary object of the invention is to provide an
improved apparatus for rapidly producing successive elec
detailed
A cleardescription.
conception of the steps involved in the improved
_
trical conductors of de?nite length and each having a ter
minal applied to its opposite ends, from longitudinally 20 conductor production procedure and of a commercial ma
advancing wire stock.
chine fcr automatically exploiting the new system, may be
had by referring to the drawings accompanying and form
Many different methods and machines forv producing
ing a part of this speci?cation wherein like reference char¢
electrical conductors from wire stock have heretofore
been proposed and used commercially with varying de
acters designate the same or similar parts in the various
grees of success, and in most cases these conductors are
views.
severed into lengths from either bare or insulated wire
stock being fed from a source of supply and each length’
FIG. 1 is a fragmentary top view of a typical machine
for carrying on the present improved system for produc-‘
_
H
ing electrical conductors from successive lengths of insu
is provided at either one or both ends with a terminal‘
lated wire severed from longitudinally fed wire stock and‘
depending upon the use to which the ?nal conductors are
to be applied. _ While single wire conductors are required 30 each having terminals attached to its opposite ends; _, 7
in many cases, conductors formed of cord having a pair
of wires joined by insulation coverings for the wires and
FIG. 2 is a considerably enlarged similar view showing
the wire severing and insulation cutting tools and the ter-v
minal attaching devices, as well as the wire feeding and in
sulation stripping clamps, of the machine more in detail,
having terminals attached to each end of each of the com
plementary wires are also in great demand. Because of
the large numbers of such conductors required, it is essen
tial that they be rapidly produced with minimum waste of
but with some of the superstructure omitted for clarity;
FIG. 3 is a further enlarged transverse vertical section
stock, of de?nite length, and with utmost precision with
through the cutting and stripping and terminal attaching
zone of the machine taken directly adjacent to the strip;
ping tools while in active position, the section being taken
successive conductors, and ?rm attachment" of the termi
40 along the line 3——3 in FIG. 2;
,
_
,
nals is also demanded by most users of the product.
FIG. 4 is a likewise enlarged transverse vertical section
The prior modes of producing such diverse conductors
through the same zone of the machine taken along the
have all been unable to meet all of the above mentioned
irregular line 4——4 of FIG. 2, adjacent to one of the ter
requirements primarily because they were too slow and
minal attaching devices and showing the latter before a
unable to meet the precision in length, because they could
not be utilized to product conductors of varying lengths,
pair of terminals have been applied to the trailing stripped"
respect to location of the terminals on the wires of the'
or because they were unable to effectively attach the ter
minals to the wires. Then too the prior machines em;
end vof a severed wire length;
tors from cord stock.
the machine taken along the line 6-6 0f_FIG. l;
‘
FIG. 5 is a similarly enlarged fragmentary transverse
vertical section through the same terminal attaching de—'v
ployed for the manufacture of such conductors were" ei
vice taken along the line 5 of FIG. 11, and illustrating
ther too complicated to insure uninterrupted automatic
functioning and to permit convenient variation in de 50 the action of this device just prior to ?nal attachment'of
sired length of the product, or they could not be operated
a terminal;
FIG. 6 is another similarly enlargedptransverse vertical,
without excessive waste of wire stock, and they could not‘
section through the cutting and stripping tooldrive of
be utilized to effectively and rapidly produce such conduc
_ ’
FIG. 7 is a transverse vertical section through the wire
It is therefore an important object of the present inven 55
feed clamp supporting and actuating structure taken
tion to provide an improved machine forp'roducing elec
along the line 7-7 of FIG. I, but also showing a vertical-v
trical conductors of any desired precise length each- hav
section through one of the feed clamp, assemblages;
ing a terminal ?rmly attached to each of its opposite ends,
FIG. 8 is a diagram depicting the initial fabrication‘
rapidly and without waste of Wire stock.
Another important object of this invention is'to pro-'
vide simple mechanism for carrying onvthe steps of an
improved conductor fabricating system automatically‘ and ‘
with minimum attention, and which can be conveniently
adjusted to produce successive conductors of any desired
length with utmost precision and dependability.
A further important object of this invention is to pro
vide an improved apparatus for producing such conduc
step during which fresh Wire stock has just been fed by
one of the clamps longitudinally through and a de?nite
distance beyond the unobstructed cutting and stripping‘
and terminal attaching zone;
,
FIG. 9 is a similar diagram showing the, Wire held
65 against movement and being severed by the center knives"
speed, and with the terminals accurately and ?rmly ap-v
while the insulation is being simultaneously out within
the cutting and stripping and’ terminal attaching ‘Zone;
FIG. 10 is another similar diagram illustrating the relaQ
tive positions of adjacent ends of the wire stock andv a"
plied to stripped endsof the successive wire lengths of
70 severed length after stripping of the cut insulation from
stock~ severed from a longitudinally advanced stockpsupply,
Still’ another" object of this" invention is to provide an
said ends, and prior to’ attachment of the terminals} 7,
tors from insulated single or multiple wire stock at high
FIG." 11 is‘ still another similair‘i'diag‘raiii' showing terfrii'l"
3,082,860
4
nals being attached to the adjacent stripped ends of the
wire stock and of the severed length of wire; and
FIG. 12 is a fragmentary view showing how several
clamp along its guideway 31; a bell crank 32 swingable
different types of terminals may be attached to the op
posite ends of dual wire insulated cord stock with the
latory shaft 33 which functions to feed the successive
terminals into proper position for attachment to the
aid of the present improved machine.
severed wire lengths. These various actuating elements
While the invention has been illustrated and described
in a vertical plane and which actuates the terminal attach
ing rams 34, 35, 36, 37; and another periodically oscil
are operable from the motor 19 through the belt drive 20
and the transverse shaft 22 which is continuously rotatable
herein as being advantageously applicable for the pro
during normal operation, but is also adapted to be rotated
duction of conductors from dual cord stock and having a
terminal attached to each of the opposite stripped ends 10 by the hand wheel 21.
of each wire, it is not intended to restrict its use to the
production of such speci?c conductors; and it is also
contemplated that all descriptive terms employed herein
be given the broadest possible interpretation consistent
with the actual disclosure.
In accordance with the improved system for producing
electrical conductors, which may be carried on by hand
The boom 11’ is ?rmly secured at one end to the drive
box it)’ by means of cap screws 43, and the end of this
boom remote from the box 10' may be supported by a
suitable stand. The top boom 11' also has a bearing
15 bracket 44 secured thereto, in which a shaft 45 which car
ries the pinion of the bevel gearing 39 is journalled, and
the cable drum 4% is fastened to this upright shaft 45 and
coacts with a cable 46 which winds around the drum 4%
and has its ends permanently attached thereto. The
in order to enhance the rate of production, insulated wire
stock is initially fed a predetermined distance longitu 20 cable 46 has parallel stretches secured to the wire feed
dinally through and beyond a cutting zone in which a
clamps 14’, 15’ and is provided with an arcuate portion
connecting these stretches remote from the drum 4%}
selected length of the wire is severed from the stock and
but is preferably exploited commercially by mechanism,
the insulation is also severed a de?nite distance on op
which coacts with an idler drum 47 journalled on a steel
shaft 48 depending from the boom 11’ as depicted in
posite sides of the point of wire severance, then the ad
jacent ends of both the severed wire length and of the 25 1G. 1.
The wire feed clamps 14’, 15' are of relatively well
stock are moved apart a de?nite distance while the
severed insulation is simultaneously stripped from these
known construction, each comprising a clamp supporting
ends, and terminals are thereafter attached to each of the
‘bracket 49 slidable upon the adjacent guide bar 12’, 13’
stripped wire ends at the cutting zone to complete the con
and adapted to be propelled therealong by the stretches
ductor without transversely displacing said ends relative 30 of the cable 46. These cable stretches are adjustably
to the longitudinal axis of the wire.
anchored to the brackets 49 by clamping plates 54}, and
A typical machine for automatically producing elec
each of these brackets has an inclined raceway coacting
trical conductors from insulated dual Wire cord stock is
with a slide 53 which carries a pair of pivoted jaws 54, 54’
illustrated in the drawings, and comprises in general, a
operable by a toggle 56. Each slide 53 carries another
wire cutting, stripping and terminal attaching zone 9'
relatively s'lidable member 55 one end of which is engage
disposed above a drive box 10’ which carries an elon
able with the adjacent toggle 56 and the opposite end of
gated horizontal boom 11’ extending across the zone S"
which has an actuating roller 57 thereon, as shown in
and has a pair of parallel slide bars 12', 13’ suspended
FIG. 7. The upper end of one jaw 55: is engageable with
therefrom on opposite sides of this zone; a pair of Wire
a key 5% which permits opening and closing of the jaws
feed clamp assemblages 14’, 15’ mounted for movement 40 only at the extreme lower portion of the slide 53;, and
back and forth along the bars 12', 13' respectively past
each clamp assemblage can be bodily lifted with the jaws
the zone 9'; a cutter head 16 also carried by the drive
54 spread apart to uppermost position as shown at the
box 10' and having wire and insulation cutting and
right of FIG. 7 away from a cord or wire 5§ so as to clear
terminal attaching devices mounted thereon within the
all of the wire cutting, stripping and terminal attaching
zone 9'; and a pair of insulation stripping clamps l7, 18
tools as well as the other clamp.
located beneath the boom 11’ outwardly beyond the op 45
The rollers 57 are adapted to be raised to lift and open
posite ends of the zone 9’, see FIG. 1.
,
the clamp jaws 54 by means of elongated bars 69 carried
The drive box 10’ houses a propelling motor 19‘ to~
gether with the transmission mechanism for imparting
by an oscillatory pivot shaft 52 which is journalled in
bearings 63 permanently attached to the boom 11', and
the desired movement to the various parts of the ma
one end of this shaft 62 has the lever 42 secured thereto.
chine, and this motor 19 is drivingly connected by a V 50 This lever 42 is periodically swingable by the mechanism
belt drive 20 with the rear end of a transverse horizontal
con?ned within the drive box It)’, and the pivot shaft 62
shaft 22 which has a hand wheel 21 at its front end for
also has another lever 64 attached thereto outwardly be
effecting manual trial run actuation of the mechanism.
yond the zone 9' which is operable to close the jaws 54 of
The transmission mechanism which is enclosed within the
the clamps 14’, 15'. The stroke of the feed clamps 14',
drive box 10' may be of relatively well known construc 55 15' afforded by the cable 46, is readily adjustable by
tion and embodies gearing, cams, cranks, rocker arms,
means of a crank which actuates, a rack 65 coacting with
and other mechanical movements formed to actuate the
a pinion 66 secured to the drive shaft 38. When the
various moving parts of the machine in proper sequence
clamps 14', 15’ are secured to the stretches of the cable 46
during normal operation, that is, once for each ?nal con
by means of the plates 56, they will be reciprocated by
60
ductor produced. Since this concealed motion transmit
this cable, and the clamp jaws 54 will be alternately closed
ting mechanism is merely a matter of machine design, its
by the lever 64 when the clamp has been stopped beneath
detailed description has been omitted for the sake of
this lever, and opened at the end of the next wire feed
clarity, but the motion transfer elements which are driven
stroke when the clamp is stopped beneath the bars 60.
by the concealed transmission mechanism and which
The intermittently reciprocable link 27 which is also
directly actuate the various parts of the unit constituting 65 operable from within the drive box 10’, is adjustably se
the present invention, will be described in detail.
cured to a rack assemblage 67 such as shown in FIG. 6,
' These motion transfer elements which are driven by
and which is adapted to simultaneously rotate a pair of
the transmission mechanism con?ned within the drive
pinions 68, 69 in opposite directions. The pinion 68 is
box 10’, include a horizontally reciprocable rod 23 for
secured to one end of a shaft 70, the opposite end of
mow'ng the stripping clamp 17 along a guideway 26; an
oscillatory shaft 25 for opening and closing the clamp 17;
a set of reciprocable links 27, 23, 29 for respectively
which carries a pinion 71 which coacts with a rack 72
mounted upon the tool supporting slide 30, while the
other pinion 69 is likewise secured to an end of a shaft
actuating the cutting and shipping tool mounting slides
74, the other end of which carries a pinion 73 coacting
24, 30, for opening and closing the stripping clamp 18,
and for controlling the stripping movement of this 75 with a rack 75 mounted upon the tool supporting slide 24,
5
5
and these slides 30, 24 carry the wire severing blades 76
and the insulation cutting stripping blades 77 as well
‘as the insulation end slitting blades 78 which are utilized
when conductors are being produced from cord stock.
The tool rams 34, 35, 136, 37 are gibbed and slidably
mounted upon the cutter head 16 and are all operable by
a system of four toggles 79, see FIG. 2. Each comple
mentary pair of these toggles 79 is interconnected by
links 81, and these links are connected by other links 82,
turning of this wheel 21 will actuate the mechanism con
?ned within the gear box 10', and after a satisfactory
?nal conductor has been thus produced, the unit is ready
for automatic production by operation of the motor 19.
As depicted in FIG. 8, the jaws 54’ of the wire feed
clamp 15' have closed and this clamp has been moved
toward the right so as to draw wire stock 59 with a termi
nal 94 attached to its leading end, through and beyond
the tool zone 9' while the wire severing and insulation
83 to opposed swinging portions of a rocker arm 84 se 10 cutting knives 76, 77 and the slicing blades 78 were fully
cured to a shaft 86 and which is swingable by the recip
separated, and the remaining jaws 54, 196, 166' were
rocable bellcrank 32 through a link 85.
open, to permit unobstructed passage of cord stock and
The toggle link system is properly positioned by means
of the jaws 54'. The extent of this rectilinear advance
of blocks 87 one of which is adjustable by means of
ment of the wire stock 59‘ has been accurately predeter
screws 88 in order to properly set the clamping pressure
mined by proper adjustment of the cable drive 65 and
exerted by the rams 34, 36. The other rams 35, 37 each
attachment of the clamps 14', 15’ to the stretches of the
cary a set of anvils 90 adapted for use with the particular
cable 45 with the aid of the clamping plates 50, and the
type of terminals to be applied, and which are provided
open feed clamp 14' with its jaws 54 will have been
stopped to the left of the zone 9' while the stripping
with wire end spreader blades 91 preferably disposed in
slots formed in spring pressed guiding slides 92 having
clamp jaws 1G6, 196' will be positively arrested by the
pockets‘ for guiding the cord stock. The anvils 99 extend
downwardly to form guides 95 for terminal strips 94 and
which are provided with covers 96, and these guides 95
are each formed with another guideway on its opposite.
side also provided with a cover 97 for housing the slides
98, see FIG. 4. These slides 99 carry upper pivoted pawls
99, which coact with the terminal strip 94 through ‘an
opening in the guide 95 and the lower ends of the slides 98
stops 103 nearest to this zone. In this position the cord
59 is suspended at one end from its supply reel through
the centering and tensioning device 115, and at its op
posite end by the jaws 54' of the feed clamp 15' and the
zone 9’ is entirely unobstructed since the tool mounting
slides 24, 3t} and the terminal attaching rams 34, 35, 36,
37 have been fully separated.
As the machine continues to function, the link‘ 28 is
are connected to links 101 which are operable by levers
operated to automatically close the stripping jaws 166’
101’ carried by the oscillatory shaft 33, to feed the two
terminal strips 94 to the attaching dies at the precise mo
ping jaws 106, and the link 27 simultaneously moves
while the shaft 25 functions to likewise close the strip
The opposed rams 34, 36 are provided with ter
the tool supporting slides '24, 3t)‘ toward each other as
minal attaching punches 93 provided with shearing edges
in FIG. 9. Here the spring pressed cord guiding slides
ment.
92. have closed to provide guides around the‘ wire‘ stock
93’ as shown in FIGS. 4, 5 and 9, for crimping the succes
sive terminals 94 to the stripped ends of the wires in the 35 59 and the slides 35, 37 have advanced the terminal strip
94 toward the wire, while the drive shaft 33 has func
cord 59 and in some cases also to the adjacent insulation.
tioned to feed two terminals into position upon the anvils
The rams 34, 356 simultaneously function to sever the in
90‘, as also illustrated in' FIG. 4. Simultaneously with
dividual terminals 94 from the terminal strips.
this inward advancement of the terminal stock, the tool
The stripping clamps 17, 18 which separate the severed
ends of the wire stock and of the cut lengths within the 40 supporting slides 24, 3t} carry the knives 76, '77, 78'int0v
cutting position wherein the knives 76 sever an accurate
zone 9' are of relatively well known construction, the
length of wire 595v from the stock, the knives 77 cut
clamp 17 being s'lidably mounted upon the guide bar 26
through the insulation only de?nite distances‘ on opposite
which is supported upon a bracket 110 carried by the cut
sides of the point of severance, and the blades 78 slice
ter head 16 and by the support 53, and being bodily mov
able between stops 163 by means of a link 1% and a lever 45 through theinsulation midway between the two wires of
the cord 59 ‘adjacent to but beyond the cuts‘ made by
105 which is operable by the reciprocable rod 23. A pair
the knives
All of these‘ operations ‘take place‘ within
of cooperable gripping jaws 1% which are operable by
the zone 9’, and the stripping clamp jaws 106, 106' which
toggles as in the feed clamps 14', 15’ are carried by a slide
are positioned against the inner stops 103' beyond this‘
which is reciprocable by a polygonal shaft 107 operable
by linkage 1G8 and a lever Hi9 ?xedly attached to the 50 zone are also caused to clamp the wire stock and the
shaft 25, as shown in FIG. 7. The clamp 18 is slidably
mounted upon the guideway 31 and is bodily movable be
tween the stops 103 by means of a pinion ‘112 coacting
with rack teeth 113 and this pinion is rotatable by a rack
114 cooperable by the reciprocable link 29, see FIG. 2.
The wire clamping jaws 106’ are opened and closed by
a square shaft carrying a lever 117 which is operable by
the reciprocable link 28, and both of the stripping clamps
17, 18 are located outwardly beyond the cutting, stripping
and terminal attaching zone 9'.
When the various parts of the improved machine have
been properly constructed and assembled as above de
scribed, its normal operation and use while producing con
ductors from dual wire cord stock 59 as shown in FIG.
12 and while carrying on the present improved system,
is substantially as follows, attention being primarily di
severed length of wire on opposite sides of the zone 9'
as shown in FIG. 9.
Continued operation of the machine thereafter causes
the upright member 41 which is driven from the gear box
10’ to rotate the feed‘ clamp actuating shaft 62 and to
swing the bars 60' about the axis of this shaft, thereby
opening the jaws 54’ of the clamp '15’ while momentarily
holding the jaws 54 of the clamp 14' open, as depicted
in FIG. 10.
The link 29 and draw bar 23 then cause
the jaws 1%’, 196 of the two stripping clamps318, 17 to
separate and move into engagement with the outer stops
103 thereby‘ causing the blades 78 to split the insulation‘
between the two wires of the cord stock and of the
severed wire length, and simultaneously stripping the cut
insulation from the severed ends of the two wires, while
also precisely locating the stripped wire ends with respect
stock 59 has been withdrawn from a suitable source of
to the terminal strips 94 and cord guiding slides 92. The
four stripped and separated ends of the wire stock and
of the severed wire-lengths are then in proper position to
have the individual terminals-attached thereto.
The v?nal“ step of completing a conductor is illustrated
supply suchv as a reel while the terminal units have also
been supplied with terminal strip stock, the ?rst conduc
in FIG. ll, wherein the jaws 54’ of the feed clamp 15'
have been fully opened while the jaws 54 of the other
rooted to the diagrams of FIGS. 8 to 11 inclusive. After
the various parts of the machine have been tentatively
set or adjusted ‘for the production of conductors having
the desired length and other characteristics, and cord
tor may be produced by making a trial run with the aid
feed clamp ld’have beenclosed; The clamp‘15’has then
of‘ ‘the hand wheel 21 secured to the shaft 22. Manual 75 been elevated to its maximum extent and. the clamp 14'
3,032,860
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will have been lowered, whereupon further movement of
ii
of said plane and being operable to simultaneously attach
the bell crank 32, causes the rams 34, 35, 36, 37 to com
a terminal to each of the adjacent severed wire ends with
plete their inward strokes. This action spreads the adja
in said spaces immediately following said endwise separa
cent slitted stripped ends of the severed Wires, and also
terminals upon the bare wire ends, see FIGS. 4, 5, and
tion thereof.
2. In a machine for producing successive electrical con
ductors each having a terminal attached to the opposite
ends of a length of insulated wire, clamps operable to
ll.
advance insulation covered wire longitudinally past ‘a
causes the shearing dies 93' to sever terminals 94 from
the adjacent strips and the dies to crimp the severed
In the meantime, while the terminals §4 are thus
?xed transverse plane to position successive de?nite lengths
being applied to complete a conductor, the stripping jaws
166’, 1% open, and the link 2’? begins to separate the 10 of the stock beyond said plane, knives operable to sever
each advanced wire length from the stock at said plane
tool carrying slides 24, 30 so as to permit the stripped
insulation to drop out of the zone 9', whereupon the rams
and to simultaneously cut through the insulation only on
34, 35, 36, 37 will be separated to permit the feed clamp
14' and its jaws 54 to subsequently pull a fresh length of
wire stock 59 through the cutting, stripping and termi
opposite sides of the plane, mechanism cooperating with
said clamps to endwise separate the ‘adjacent severed ends
of the stock and wire length axially of the wire stock in
opposite directions away from and perpendicular to said
plane to provide spaces adjoining the opposite sides of the
This series of steps constitutes one cycle of operations
plane and which are only su?icient to receive the terminals
which are repeated in rapid succession to produce ?nished
to be applied while simultaneously stripping the_pre-cut
conductors such as shown in FIG. 12, in lengths up to
?fteen feet depending upon the lengths of the boom 11' 20 insulation from said ends, ‘and terminal attaching devices
located on opposite sides of ‘said plane and being operable
and of the cable stretches. While the feed clamp 14' is
to simultaneously attach a terminal to each of the adja
travelling in one direction, the other feed clamp 15’ is
cent severed wire ends within said spaces immediately
moving in the opposite direction, and these clamps are
al attaching zone.
adapted to be bodily elevated ‘and lowered so as to clear
each other during their reverse passages and through the
zone 9. The stripping clamp 196, is also adapted to be
periodically closed to grip the wire stock 59 and opened
and lowered to permit free and unobstructed passage of
the feed clamps 14-’, 15’. The same is true of the tool
mounting slides 24-, 3t} and of the terminal applying rams
34, 35, as, 37 so that free reciprocation of the feed clamps
1-4’, 15' is assured at all times.
From the foregoing detailed description it should be
apparent that the present invention in fact provides an
improved apparatus for rapidly and elfectively producing
electrical conductors with utmost precision. With the pres
ent improved machine the wire stock is always advanced
following said endwise separation thereof.
3. In a machine for producing successive electrical con
ductors from double wire insulated cord stock and each
having a terminal attached to the opposite ends of each
wire of the cord, clamps operable to advance the cord
stock longitudinally past a ?xed transverse plane to posi
tion successive de?nite lengths of the stock beyond said
plane, knives operable to sever each advanced wire length
from the stock at said plane and to simultaneously cut
through the insulation only on opposite sides of the plane,
mechanism cooperating with said clamps to endwise sep
arate the adjacent severed ends of the stock and wire length
axially of the cord stock in opposite directions away from
said plane but avoiding lateral displacement of the stock
to provide spaces adjoining said knives only suf?cient to
receive the terminals to be applied while simultaneously
the stock laterally when applying terminals to the severed
ends. This feature is applicable to insulated as well as 4:0 stripping the pre-cut insulation from all four of said ends,
spreader blades operable to spread the stripped and sep
plain Wire stock, and not only enhances the rate of pro
arated wire ends of both the stock and of the severed
duction of the ?nal conductors but also insures the for
length, and terminal attaching devices located on opposite
mation of straight conductors. By causing the wire to be
sides of said plane and being operable to simultaneously
cut, stripped and the terminals applied within a common
zone 9', these operations can be carried on with utmost 45 attach terminals to the four stripped adjacent ends within
said spaces immediately following said endwise separation
precision resulting in the production of terminals of pre
and spreading thereof.
cisely uniform length with the terminals accurately posi
with rectilinear motion and it is not necessary to move
4. In a machine for producing an electrical conductor
from elongated wire stock, means operable to advance
after initial adjustments and trial runs have been made.
The invention is ‘applicable for the production of conduc 50 the wire stock longitudinally past a ?xed transverse plane
to position a determined length of the stock beyond
tors having various types of terminals attached to the op
said plane, means operable to sever the advanced wire
posite ends of diverse types of wire stock, and has proven
length from the stock at said plane, means cooperating
highly satisfactory and successful in actual use.
with said stock advancing means to endwise separate
It should be understood that it is not desired to limit
the adjacent severed ends of the stock and wire length
this invention to the exact steps or to the precise details
axially of the wire in opposite directions away from
of construction and operation of the machine, herein spe
tioned on each conductor, and with no waste of stock
ci?cally shown and described, for various modi?cations
within the scope of the appended claims may occur to per
sons skilled ‘in the art.
said plane While avoiding lateral displacement of said
ends to provide a space sui?cient to receive the terminals
to be applied to said ends, and terminal attaching means
60 located on opposite sides of said plane and being operable
I claim:
to apply a terminal to each of said spaced adjacent severed
1. In a machine for producing successive electrical con
ends
following said endwise separation thereof.
ductors each having a terminal attached to the opposite
5. In a machine for producing an electrical conductor
ends of a length of wire, clamps operable to advance
from elongated insulated wire stock, means operable to
wire stock longitudinally past a ?xed transverse plane to
advance the wire stock longitudinally past a ?xed trans
65
position successive de?nite lengths of the stock beyond
verse plane to position a predetermined length of the
said plane, knives operable to sever each advanced wire
stock beyond said plane, means operable to sever the
‘length from the stock at said plane, mechanism cooperat
advanced wire length from the stock at said plane and
ing with said clamps to relatively endwise separate the
to also cut through the insulation only on opposite sides
adjacent severed ends of the stock and wire length ‘axially 70 of the plane, means cooperating with said stock advancing
of the wire stock in opposite directions away from and
means to endwise separate the adjacent severed ends of
the stock and wire length axially of the stock in opposite
perpendicular to said plane to provide spaces adjoining
directions away from said plane while avoiding lateral
the opposite sides of the plane and which are only suffi
displacement of said ends to provide a space su?‘lcient to
cient to receive the terminals to be applied to said ends,
receive the terminals to be applied while simultaneously
and terminal attaching devices located on opposite sides
3,082,860
stripping the pre-cut insulation from said ends, and ter
minal attaching means located on opposite sides of said
plane and being operable to simultaneously apply a ter
minal to each of said spaced adjacent severed and stripped
ends following said endwise separation thereof.
6. In a machine for producing successive electrical
conductors from a continuous supply wire, clamps opera
ble to advance successive de?nite lengths of the supply
wire longitudinally past a ?xed transverse plane, knives
operable to sever the successive Wire lengths from the 10
supply wire at said plane, mechanism cooperating with
said clamps to separate the severed end of each wire
length from the supply wire axially of the wire and with
out lateral displacement of the severed ends to provide
10
spaces between said ends and the opposite sides of said
plane, means for positioning terminals within said spaces
in, axial alinement with said severed ends, and terminal
attaching devices operable to simultaneously secure the
axially positioned terminals to both of said separated
ends with said spaces to complete the successive con
ductors.
‘
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,497,112
2,768,425
2,929,136
2,954,599
Andren ______________ __ Feb. 14,
Andren ______________ __ Oct. 30,
Andren ______________ _.. Mar. 22,
Cootes et al ____________ __ Oct. 4,
1950
1956‘
1960
1960
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