US2564874A - Terminal wiring method and apparatus - Google Patents

Terminal wiring method and apparatus Download PDF

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US2564874A
US2564874A US739505A US73950547A US2564874A US 2564874 A US2564874 A US 2564874A US 739505 A US739505 A US 739505A US 73950547 A US73950547 A US 73950547A US 2564874 A US2564874 A US 2564874A
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wire
wires
insulation
terminals
crimping
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US739505A
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Karl H Andren
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Artos Engineering Co
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Artos Engineering Co
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048Crimping apparatus or processes
    • H01R43/052Crimping apparatus or processes with wire-feeding mechanism
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49174Assembling terminal to elongated conductor
    • Y10T29/49181Assembling terminal to elongated conductor by deforming
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5102Binding or covering and cutting

Description

Aug. 21, 1951 K, ANDRE-N 2,564,874
I TERMINAL WIRING METHOD AND APPARATUS Filed April 4, 1947 2 Sheets-Sheet l E E 111.1111111111111) fil/1111111111111, umbrmmm.711111111111.
Aug. 21, 1951 K, ANDREN 2,564,874
TERMINAL WIRING METHOD AND APPARATUS Filed April 4, 1947 2 Sheets-Sheet 2 www0/@MEMS Patented Aug. 21, 1951 TERMINAL WIRING METHOD AND APBARATUS.
Karl H. Andren, Milwaukee, Wis., assignor to Artos Engineering Company, Milwaukee, Wis., a corporation of Wisconsin Application April' 4, 1947., Serial No.. 739,505
4 Claims. l,
The present invention relates in generalv to improvements in thev art of attaching a succession of similar elements in predetermined. order to a, series of elongated members, and relates more specifically to an1improved method of and apparatus for electrically connecting successive groups of terminals tosuccessive spaced porn tions of a plurality of insulatedwires or conductors.
It has heretofore been proposed as shown and described in my copending application Serial No. 459,526, led December 19, 1942, now abandoned, to construct terminal banks for automatic telephone systems, by longitudinally advancing a series ofinsulated Wires radially toward a common axis', by positioning successi-Ve arcuate groups of radially disposed terminals adjacent to the wires of the advancing series near said axis, by crimping correspondingr terminals of the successive groups to the same wiresthrough the insulation of the latter so asA toV produce a chain of elec- -trically interconnected terminal groups, and by finally stacking the terminal groups into arcuate banks having predetermined terminals thereof connected by predetermined wires, without resorting to soldered attachments. While this crimping of the terminals through the insulation, did in fact greatly facilitate assembly of the terminal banks by eliminating the laborious and costly prior method of soldering each terminal to aselected wire, it is' possible that the presence of the insulation at the attaching zones might occasionally prevent perfect electrical contact between the insul'uation piercing prongs of a termina-l and the adjacent wire especially when the attachments are being produced by machinery and in rapid succession. In` order to avoid this possibility of production of imperfect electrical connections while still retaining the advantages of the crimping method of attachment and bank assembly, I have discovered that moreperfect and dependable unions may be secured with the same general procedure and machinery as that revealed in my prior application and without interfering with speed of production, by positively removing the wire insulation at the successive attaching zones before the terminals are crimped to the Wires at these zones.
it is therefore primary object of my present invention to provide an improved method of and apparatus for expediting attachment of successive similar elements such as groups of terminals, to a plurality of elongated members such as insulated electric current conducting. wires, in a .manner whereby; perfect electrica-1l Connections (Cl. 22T-155.55)
2. are insured while the interconnected elements and members may still be readily assembled into final stacks such as efficient telephone switch banks.. e
Another object of this invention. is to provide ay methodY of.' directly connecting. arcuate groups of terminals to longitudinaly advancing insulated wires, by removing the insulation from. successive local zones or portions of the wires,yand by crimping selected terminals of. the successive groups. to the baredareas. of predeterminedwires of. the advancing l'ot.
A further object of.' the present inventionis to provide reliable and. automatically functioning apparatus for carrying on commercial, exploitation. of my improved method of terminal group and( conducting wire assembly, by effectively removing the insulation from the local portions of the. continuousY wiresand by subsequently firmly crimping the selected terminals to the bared zones..
Still another object of my invention is to provide an. improved. system for mechanically as sembling a, succession. of similar elements such asfgroupsofmultiple switch terminals and a plurality of elongated members such as continuous insulatedcopper wires, at high speed and in' a mest. accurate and dependable manner, so that perfect electrical contact. between the terminals and the wires is always assuredwithout resorting tofusionofmetals.such as soldering.
An. additional' obiect of .the invention is to provide a new mode of most effectively electrically connecting selected terminals of successive unitary cards. or groups, to bared local: zones. of insulated longitudinally advancing wires, while twisting adjacent. pairs of the progressing wires about. each other on opposite sides of each zone of attachment of a-terminal.
These and. other objects and advantages of the present invention. will be apparent from the following. detailed description.
A clear conception of the several steps involved in my improvedI method, and of the construction and operation of typical apparatus for effecting automatic commercial exploitationV thereof, may be had by referring to the drawings accompanying and. forming a part of this specification in whichY like reference characters designate the same or similar parts inthe various views.
Fig. 1 is a somewhat diagrammatic section through one of my improved insulated' wire clamping and insulation. removing or stripping units for holding, strippingy and transferring an adj-acentpair of wires.;
Fig. 2 is a similar section through the clamping and insulation removing unit, showing the same in action to strip the insulation from local areas or portions of the held wires;
Fig. 3 is a transverse section through the clamping and insulation removing unit of Figs. 1 and 2 showing the complementary pair of wires in position, the section having been taken along the line 3-3 of Fig. 1;
Fig. 4 is an end view of one of the wire spacers and stripping elements, removed from the clamping and insulation stripping unit;
Fig. 5 is a diagram of a. typical terminal and Iwire assembling machine showing the movable terminal crimping die elevated, the wire transporting slide moved away from the crimping Zone and lowered to bring the wire feeding and insulation stripping ngers thereof into insulation shearing action adjoining each other as in Fig. 1, while the wire twisting rotor is inactive;
Fig. 6 is another diagram of the machine, showing the wire feeding and insulation stripping ngers of the transporting slide, moved apart as in Fig. 2 to strip the insulation off of or away from adjacent local areas of the wires, and also showing the Iwire twisting rotor in action to twist the pair of wires about each other adjacent to the stripped zone while the wires are being transported longitudinally;
Fig. 7 is a similar diagram of the machine, showing the stripping fingers spread apart as in Fig. 6, and the wire transporting slide moved forwardly to position the bared portions of the wires close to the final crimping zone, while the wire twisting rotor is again inactive;
Fig. 8 is still another diagram of the machine, showing the stripped portions of the wires lowered adjacent to the terminals of an arcuate group, and the movable crimping dies operating to effect attachment of the terminals to the bared wires, while the wire twisting rotor is still inactive;
Fig. 9 is an additional diagram of the machine, showing the upper crimping die and the wire feeding lingers and transporting slide elevated away from the crimping zone, but with the arcuate terminal group still held at the crimping zone and the wire twisting rotor active to twist the adjacent pairs of wires;
Fig. 10 is a further similar diagram of the machine, showing the crimping dies fully separated and the transporting slide and feeding ngers being moved rearwardly, while the adjacent pairs of wires are still being twisted about each other;
Fig. 11 is a final similar diagram of the machine, showing the crimping dies fully separated and the feeding and stripping iingers about to be brought together and lowered for coaction with a succeeding portion of the wires, while the wire twisting rotor is again inactive; and
Fig. 12 is an enlarged diagrammatic plan View of a fragment of the partially completed chain of wires and terminal groups produced by the machine while carrying on my present improved method.
Although the invention has been shown and described herein as being advantageously applicable for effecting attachment of corresponding terminals of successive flat arcuate groups to the same insulated wires of a series while the latter are being advanced longitudinally in a horizontal direction, it is not my desire or intention to thereby unnecessarily restrict the utility of the improved method and apparatus.
In my prior application, Serial No. 469,526, led
December 19, 1942, I have revealed an improved method of electrically connecting or attaching the corresponding terminals of successive similar arcuate cards or groups, to the same longitudinally advancing insulated wires of a series, and of twisting adjacent pairs of the wires about each other on opposite sides of the several points of attachment, by providing each individual terminal with integral metallic points which were driven through the insulation and embedded within the stranded copper wires by cooperating dies, without removing the insulation from the wires at the attaching areas. The present improvement contemplates the provision of a similar method, but the improved method diiers from the prior one by virtue of the fact that I now positively remove the insulation from each area of attachment of the terminals and wrap the metal of each terminal directly about the bared portion of the adjacent wire, thereby insuring more perfect electrical contact without however resorting to soldering or the like. The improved method may be carried on commercially with apparatus quite similar to that shown and described in my said prior application, by merely providing additional mechanism for removing the insulation from the several wires at the proper localities, and the major portion of this apparatus will therefore be only diagrammatically disclosed herein, while the modication necessary for the present improvement will be more specifically shown and described.
Referring to the drawings, the apparatus shown is adapted to automatically produce a continuous chain of wire and arcuate terminal group assemblages a partially completed fragment of which is shown in Fig. 12, and as specifically illustrated, each arcuate card I4 consists of a group of twenty sheet metal terminals I5 radiating from a common center, to each of which an insulated wire I6 is electrically connected by crimping the metal of the terminal I5 about a bared portion of the adjacent wire I6. The wires I6 may be either stranded or solid, and the completed chain may be severed into sections of suitable lengths each containing a number of cards I4, and these cards may finally be assembled in stacks or banks for use in connection with automatic telephone systems, in a well known manner.
The apparatus for producing the improved chains of Fig. 12, comprises in general a frame forming a crimping or card attaching Zone l1 having lower and upper relatively movable dies I 8, I9 respectively cooperable therein to simultaneously crimp all of the terminals I5 of each successive card I4 to the successive locally bared portions 2S of the several wires I6 presented to the zone I1; a revolvable card supply table 2|; a card transfer and holding pad 22 cooperable therewith for properly positioning the successive cards I4 within the zone I1; a plurality of horizontally reciprocable radially directed main slides 24 each having thereon a set of wire gripping and insulation removing fingers 25, 26 adapted to cooperate with a pair of the insulated wires I6 to transport these wires longitudinally toward the assembly Zone l1; a multiplicity of wire guiding and twisting rotors 21 each housed within an independent casing 28 and each adapted to conduct a pair of the insulated wires I6 toward the corresponding set of stripping and transfer fingers 25, 26; a number of wire supply reels each having a wire guide 29 cooperable therewith to conduct the individual wires I6 in pairs toward one of the rotors 21; a final conveyor 30 for transferrifng theA continuous chain assembly away' from the uniting zone I1; and suitable driving mech'- anismfor periodically actuating. the. various. machine' elements to automatically' exploitthe improvedV method.
The lower and. upper crimping' dies I8, I6 are formed' and operable to rmly wrapv the. metal ofv the terminals i5 about the bared portions' 2D of the adjacent wires I6, and-thereisl a cooperating set of these dies I8, is provided for each of the twenty terminals of the successive cards or groups I4; The. card supply table 2I` isl intermittently revolvable to present the successive` cards I-f4A deposited: in spaced relation. upon the periphery thereof, to the positioning pad 227,. and` this pad is movable. fore and. aft' uponv links 32A to: assist in the transfer of the new arcuate cards I'4 with their radiating terminals'. in' position' for distortion by the. dies I8. t9. within. the crimping zone I1, and to also hold: the cards. while the dies are being withdrawn. The reciprocable wire feeding slides 24 besides being' movable toward and away from the assemblyA zone I1, are also movable vertically at certain intervals.. and the upper dies. I9 are movable through openings' or gaps between the spread fingers 25, 26. of the corresponding slides 2.4 whenever a crimping operationk is: being effected.
The slides. 24 and the dies I8', I9` may all be mounted for movement in the common sturdy frame, and each of the main slides 2l!` carries an` auxiliary. slide 34'. The front wire gripping and insulation removing finger 25' of. each slide assembly'is carried directly by the auxiliary slide 3:4-, whereas the rear. nger 26 is carried directly by the main slide 24, and the two slides of each assembly are simultaneously movable toward and away' from' the zone: i1: but they are also' relatively movable'` to separate or spread the fingers 2.53, 26 asillustrated in Figs. 1 and 2?. Each finger 25, 26 isprovidedat its lower' end; with'. two laterally' spaced notches 35 each oflwhich ist bounded by a cutting or knife edge. as shown. in Figs. 1, 2 and 3, and these knife edges are adapted to cut through the'. top and' sides of: the: insulation i 36 of the wires it presented thereto, while the fingers 25, 26 are in contact with each. other as in l. When the fingers 25,. 26 are subd sequently spread apart by relativeI movement of the-s1ides 21%', 34 as.- in Fig. 2, the knife edges of the` notches 35 remove or strip the' insulation 36 to produce the bared wire portions 26,. but the notches. 35 continue to snugly. embrace and to firmly hold the wires 61. after such stripping has been eifected.
In. order `to properly position. the wires. I6. for entry thereof into the notches 35 and to; prevent thel wires from dropping: or.' excessively sagging away'f'rom the descending. fingers 25, 26, a pair of: spreaders 31l such as shown in Fig. 4 are providedI at each of the slide assemblages.. Each cooperating set or pair of these spreaders 31 is swingably suspended by means of pivotpins 38, from a vertically movable supporting block 39, andthe spreaders 31 of each pair are constantly urged toward each other by leaf springs 4l) secured to the intervening block 39 and coacting with thev adjacent spreaders 31. Each spreader 31 is provided with an upwardly directed central point 42 having projections'` 43' onthe opposite sides thereof, and thev top of each; of these prdjections 43 is provided witha cutting or knife edge 44 which. iscooperablel with. the knife.Y edgesA of the adjacent or corresponding: finger. 25, 26.r to and. strip the insulation. 36 from the bottoms ofsuccessiveportons 2070i the. wires IS-,asfclearly shown in Figs. 1. to 4Y inclusive in. order toinsure clean. cutting: of the insulation entirely around. each wire. The points 42 of the spreaders 31P are: always. spa-ced apart sufficiently to permit lower= ing ofthe transfer fingers 25, 26 therebetween, when these fingers are in engagement W-itheacha other; andas these fingers are moved away from each other: they move thespreaders apart. After` these. iingershave been spreadV apart to: produce as bared wiresportion` 2D on a pair of complementary^- wires I6, and the spreaders 31 have been lowered away from thewires, the` leaf springs 40 become quickly effective to return the: released spreaders toward each other, to the position in;- dicated in Fig. l'.
lThe wire guiding and: twisting rotorsA 21 which are. journalled for periodic rotation within the fixed casings 28, are located' between the Wire guides 29 and the wire spreaders 31, andi each of these rotors 21 coacts with al complementary-pair` of the wires I6 to' guide this pair of wires for longitudinal advancement radially ofthe crimping; zone I1', and to also periodically twist the wires I6 about each other on the opposite sides of each successive pair of bared wire portions 201 Each of these rotors 21 is provided with a pain of laterally separable wire guiding fingers which are normally held together by clamps 46, but; which' are adapted to separate and to twist thel wires I6 about each other during variousdefinite periods of operation of the machine. The ma.- chine is also provided with other,y structuresl for insuring proper guiding of the wires and for re'- leasing the cards I4 from the dies after each crimping operation, and the mechanism for driving the various movable partszin properly timed relation, is shown and described in detail. in my copen'ding application above referredY to.
As previously indicated, the mechanism justdescribed is adapted to automatically exploit: my new method, and in order to clearly indicatethe manner in1 which. this is done, onev cycle' ofropera.- tions will be described, itY being. understood however thatr successive similar' cycles are normally repeated in rapid succession. When. the" mech:- an'isrrr isA disposed-f. as shown in Fig.. 53. al1: of the composite slides 24 have been moved away from the. crimping zone I1 as far as possible, and lowered to cause the fingers 25, 26 thereof to cut through the insulation 36 of the wires I6 as#4 in Fig. 1, while, the wires I6 arek resting on the' knife edges 64: of the spreaders 31. The rotors 21 are stationary ati that. time so that no twisting of wires is being effected, and the wire. guiding iingers. of the rotors 21 are clamped together by the clamps: 46, althoughv the complementary wires of each.. pair will have been temporarily twisted ad@ jacent to their guide wheels 29 during a previous operation ofv these rotors. The dies. I8', I9 are separated to the fullest extent, and while the parts. are in this position, the slides 24, 34 of each slide assembly will be moved relativey to each other so as to separate the fingers 25,v 26 thereof and to produce a bared portion 2U. on each wire: I6, asin Figzz.
Upon completion of this insulation. stripping operation, the spreaders 31' will be lowered so as to cause the spread fingers 25, 26 to clear the tips l2 of these spreaders, whereupon the slides with the wires I6 suspended therefrom, will. be moved toward the crimping zone I1, asf depicted in Fig. 6. TheV dies IS, I9 will remain separated,
but the. pad 22 will have. been withdrawn tolpermit the table 2I. to place a new card. I4 into position for elevation into the Zone I1 by the lower die I8; and as the slides 24, 34 proceed toward the zone I'I, they pull fresh wire stock from the corresponding supply spools past the wire guide 29 and through the rotors 21. The clamps 46 are also released and the rotors 2I are revolving, thereby permanently twisting the pairs of wires IB about each other between each set of transfer fingers 25, 26 and the corresponding rotor 2'I but unwinding the temporary twists previously applied to wires between each rotor 2'I and its wire guide wheels 29.
This longitudinal transportation of the wires I6 toward the terminal attaching zone Il and the nal twisting of each pair of wires about each other, continues until the slides 24y 34 have reached the position illustrated in Fig. 7, whereupon the twisting action of the rotors 21 ceases, and the bared portion 29 closely approach final crimping position. The pad 22 then moves rearwardly to hold the new cards I4 in proper position while the lowerdies I8 move upwardly and the upper dies I9 move downwardly.
While the twisting rotors 2l are still at rest, the slides 24, 34 finally stop in the crimping Zone I 'I and the lower dies I8 simultaneously elevate the new card I4 with its terminals I5 directly beneath the bared wire portions 20, while the upper dies i9 descend through the spaces between the ngers 25, 26 of the slides, and cooperate with each other to rmly clamp the terminals I5 about the adjacent stripped portions 2U of the wires IB, as shown in Fig. 8. During this final crimping operation, the pad 22 will be moved forwardly to clear the lower die I8 and its card elevating structure, and the slides 24, 34 areso formed as not to interfere with the downward crimping motion of the upper die I9.
Upon completion of each terminal attaching or crimping operation, the upper dies I9 and the slides 24, 34 coacting therewith, are elevated in unison, but the lower dies I8 remain elevated momentarily while the pad 22 is moved beneath the newly attached card I4, and the rotors 2l are revolved so as to again twist the complementary wires I6 on the opposite sides of each rotor, as depicted in Fig. 9. 'Ihis twisting operation does not unwind the previous permanent twists 48 applied to the wires, but in fact starts a new twist 49 in each pair of wires I6 remote from the prior twist 48, see Fig. 12.
The wire twisting operation continues while the upper dies I9 are being withdrawn from between the transfer lingers 25, 26, and the lower dies I8 are descending, as illustrated in Fig. 10, and during this withdrawal of the lower dies, the pad 22 remains effective to hold the terminal card I4 which has just been attached to the wires I6, within the crimping zone ll'. The upward movement of the slides 24, 34 is arrested when the fingers 25, 26 thereof have cleared the wires I and the attached card id, whereupon the slides are ready for their return stroke.
When the elevated slides 24, 34 and have been moved rearwardly to a position directly above the spreaders 3l, the twisting operation of the rotors 2l ceases, and the spreaders are raised as shown in Figure 11 to cause the points 42 thereof to pass between the adjacent pairs of twisted Wires i6 and to be clamped against the sides of the points 42, thus assuming the positions shown in Fig. l. The slides 24, 94 are subsequently lowered and the fingers 25, 2G are simultaneously brought together for proper entry between the corresponding sets of spreaders 3l, thus placing the apparatus in condition for a repetition of the cycle.
From the foregoing description of the step-bystep operation of the machine, it will be noted that the mechanism is in fact adapted to automatically and accurately carry on the improved method by removing the insulation from successive equally spaced portions 28 of the wires IE and by crimping the terminals of the successive cards I4 directly to the bare wires I I5 in predetermined order. Because of the fact that the terminals need not necessarily pierce the wires, the improved method and apparatus may be utilized to effect attachment of terminals to either solid or stranded wires. The improved insulation removing mechanism functions to positively cut and strip the insulation from each area or Wire portion 20 without danger of damaging the wires I8, and the final attachment is effected without resorting to soldering or the like. While the improved method and apparatus are advantageously applicable for the production of card and wire chains for telephone systems, this method and mechanism may also be utilized for other similar purposes, and the improvement obviously insures production of perfeet electrical connections between the terminals I5 and wires I9 while the machine is operating at high speed. While the twisting of complementary pairs of wires about each other on opposite sides of each point of terminal attachment, is not essential, it is advantageous, and such twisting may be just as readily effected with the improved method as was possible with the method covered by my prior application herein referred to.
It should be understood that it is not desired to limit this invention to the exact steps of the method or to the precise details of construction of the apparatus, herein shown and described, for various modifications within the scope of the appended claims may occur to persons skilled in the art; and it is also contemplated that specic descriptive terms used herein be given the broadest possible interpretation consistent with the disclosure.
I claim:
i. The method of stripping and oi attaching terminals to successive bared portions of a continuous insulation covered wire, which comprises, causing an insulation covered medial portion of the continuous wire to rest upon a lower pair of adjoining cutting edges and moving an upper pair of adjoining cutting edges downwardly toward the lower edges in the plane of adjoinment to completely sever the insulation entirely around the wire at said plane, separating the two adjoining sets of cooperating cutting edges to push the severed ends of the insulation along the wire away from said plane, dropping the lower cutting edges away from the wire and moving the upper separated cutting edges while still in engagement with the severed separated ends of the insulation in the direction of extent of the wire to shift the bared wire portion to another locality and to simultaneously longitudinally advance the continuous wire, and clamping a terminal directly about the bared wire portion at said other locality.
2. The method of stripping and of attaching terminals to successive bared portions of a continuous insulation covered wire, which comprises, causing an insulation covered medial portion of the continuous Wire to rest upon a lower pair of adjoining cutting edges and moving an upper pair of adjoining cutting edges downwardly toward the lower edges in the plane of adjoinment to completely sever the insulation entirely around the Wire at saidplane, separating the twol adjoining sets of cooperating cutting edges to push the severed ends of the insulation along the wire away from the wire, dropping the lower cutting edge away from the wire and moving the upper separated cutting edgesfwhile still in engagement 'with the severed separated ends of the insulation in the direction of extent of the wire to shift the bared wire portion to another locality and to simultaneously longitudinally advance the continuous wire, clamping a terminal directly about the bared Wire portion at said other locality, and repeating said stripping and terminal attaching operations at successive equally spaced localities along the length ofthe continuous wire.
3.- In a mechanism for stripping and attaching terminals to] successive bared portions of a continuous insulation covered wire, a pair of adjoining lower cutting edges, means for positioning an insulation covered medial portion of a continuous wire upon said lower cutting edges, a pair of adjoiningupper cutting edges movable toward said lower cutting edges in the plane of adjoinment thereof to completely sever the insulation entirely around the wire at said plane, means for separating the said lower and uppen adjoining cutting edges while completely encirand to simultaneously advance the continuous wire longitudinally, and means for clamping a terminal directlyabout the bared wire portion at said other locality.
4. In a mechanism for stripping and attaching terminals to successive bared portions of a continuous insulation covered wire, a pair of adjoining lower cutting edges, means for positioning an insulation covered medial portion of a continuous wire upon said lower cutting edges, a pair of adjoining upper cutting edges movable toward said lower cutting edges in the plane of adjoinment thereof to completely sever the insulation entirely around the wire at said plane, means for separating the said lower and upper adjoining cutting edges while completely encircling the wire to push the severed ends of the insulation along the Wire away from said plane, means for thereafter removing the lower cutting edges from the wire, means for subsequently moving the upper separated' cutting edges while still in engagement with the severed separated insulation ends in the direction of extent of the wire to shift the bared wire portion to another locality and to simultaneously advance the continuous wire longitudinally, means for clamping a terminal directly about the bared wire portion at said other locality, and means for returning said lower and upper cutting edges to insulation severing and stripping v positions.
KARL H. ANDREN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,800,914 Stull Apr. 14, 1931 1,835,597 Hill Dec. 8, 1931 1,987,959 Knuuti Jan. 15, 1935 2,142,818 Jacobson Jan. 3, 1939 2,217,077 Phillips Oct. 8, 1940 FOREIGN PATENTS Number Country Date 481,662 Great Britain of 1938
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Cited By (8)

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US2953842A (en) * 1954-06-28 1960-09-27 Sylvania Electric Prod Method of making tabbed heater
US2965147A (en) * 1954-07-06 1960-12-20 Amp Inc Crimping methods and apparatus
US3363309A (en) * 1964-10-07 1968-01-16 Thomas & Betts Corp Method of attaching terminals to a length of insulated conductor
US3568730A (en) * 1969-06-25 1971-03-09 Jimmy C Ray Method of splicing
US3579823A (en) * 1969-09-12 1971-05-25 Bell Telephone Labor Inc Apparatus and method for applying indexing strips to cable pair groups
US3646307A (en) * 1970-09-24 1972-02-29 Ibm Wiring apparatus
FR2365865A1 (en) * 1976-09-22 1978-04-21 Eltra Corp METHOD AND MACHINE FOR FORMING A MULTI-CONDUCTOR CABLE-TAPE HAVING TWISTED PARTS AND STRAIGHT PARTS
FR2558653A1 (en) * 1984-01-25 1985-07-26 Sumitomo Electric Industries BYPASS WIRE CONNECTION APPARATUS

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US1800914A (en) * 1926-04-10 1931-04-14 Western Electric Co Apparatus for stripping covered strands
US1835597A (en) * 1930-01-01 1931-12-08 Western Electric Co Apparatus for working strand coverings
US1987959A (en) * 1933-02-17 1935-01-15 Western Electric Co Wire cutting and stripping machine
US2142818A (en) * 1935-10-28 1939-01-03 Illinois Tool Works Electrical connecter
US2217077A (en) * 1939-02-17 1940-10-08 Thomas W Phillips Wire insulation cutting and stripping device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953842A (en) * 1954-06-28 1960-09-27 Sylvania Electric Prod Method of making tabbed heater
US2965147A (en) * 1954-07-06 1960-12-20 Amp Inc Crimping methods and apparatus
US3363309A (en) * 1964-10-07 1968-01-16 Thomas & Betts Corp Method of attaching terminals to a length of insulated conductor
US3568730A (en) * 1969-06-25 1971-03-09 Jimmy C Ray Method of splicing
US3579823A (en) * 1969-09-12 1971-05-25 Bell Telephone Labor Inc Apparatus and method for applying indexing strips to cable pair groups
US3646307A (en) * 1970-09-24 1972-02-29 Ibm Wiring apparatus
FR2365865A1 (en) * 1976-09-22 1978-04-21 Eltra Corp METHOD AND MACHINE FOR FORMING A MULTI-CONDUCTOR CABLE-TAPE HAVING TWISTED PARTS AND STRAIGHT PARTS
US4096006A (en) * 1976-09-22 1978-06-20 Spectra-Strip Corporation Method and apparatus for making twisted pair multi-conductor ribbon cable with intermittent straight sections
US4202722A (en) * 1976-09-22 1980-05-13 Spectra-Strip Apparatus for making twisted pair multi-conductor ribbon cable with intermittent straight sections
FR2558653A1 (en) * 1984-01-25 1985-07-26 Sumitomo Electric Industries BYPASS WIRE CONNECTION APPARATUS

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