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Publication numberUS2369180 A
Publication typeGrant
Publication dateFeb 13, 1945
Filing dateDec 15, 1942
Priority dateDec 15, 1942
Publication numberUS 2369180 A, US 2369180A, US-A-2369180, US2369180 A, US2369180A
InventorsLeon Rosenthal
Original AssigneeGuild Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tool for applying electrical and telephone tip terminals
US 2369180 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Feb. 13, 1945. ROSENTHAL 2,369,180

TooL Fon APISLYING ELECTRICAL AND TELEPHONE TIP TERMINALS Filed Dec. 15, 1942 3 sheets-sheet 1 glu AvA 2 9 a Z JNVENTOR. fr @e0/w @0MM/c5616,

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Feb. 13, 1945. l.. Rosi-:NTHAL 2,369,180


Feb. l13, 1945. L. ROSENTHAL 2,369,180


Patented Feb. 13, 1945 Toor. Foa APPLYING ELECTRICAL AND'. TELEPHONE 'rrr TERMINALS i `Leon Rosenthal', Baltimore, Md., assignor to Guildi Manufacturing. Company, Baltimore, Md., a partnershipv composed of Irving Katz and AlbertD. `Groldmamboth of Baltimore, Md.. v

Application December 15, 1942,v Serial No. 469,109

ci. :s1-15) `8: Claims.

My invention relateslv broadlyto tools and more particularlyto a tool for applying sleeve-like terminals to electrical conductors:

One'y ofthe objects of' myinvention is to provide a construction of ltool for rapidly applying ing my invention;V Fig. 2 isI an end view of; the tool shown in Fig. 1; Fig. 3y is'an enlarged frag-` mentary'vertical sectional view showing parts of the tool in section and parts" of the-tool in ele`` vation, the tool beinggshown in; a position pre-4 pared to'receive the terminal capped'endof in sulated wire for application of the terminal to the end of the insulated Wire; Fig. 4 is a view similar to the View illustratedin Fig. 3 showing" the terminal capped end of an insulated w1r`e introduced into' the socket between the radially disposed knives; Fig. 5 isa View of the tool' similar to the views shown in Figs. 3v and 4 but illustrat-v ing theparts shifted tooperative 'positionfor lancing the material'ofthe sleeveelike terminali for establishing electrical connection between the sleeve-like terminal and the electrical con-- 1 ductor and curling the edge of'V the sleeve-like electrical?conductors-inI which' amultiplicity-of knivesvareA arranged in radial' positionsv between whichl an electrical*conductor havingI asleevelike cap or terminal? slippedf-over'the; end thereof may be introducedl Wlth-'yieldable means for moving the knives inwardly@ tof-positions piercing the material of the sleeve-likeE member 'for displacing the material.r thereofV toly at position establishing electrical. connection with' the; conductor; the knives` being: thereaiterret'ractible. for rreleasing the-electrical conductor: with the terminal.' applied thereto'. l

.further object-.ofimy' invention is` to'l provide terminal'inwardly `for providing afirm mechani-A cal connection betweenthe-r sleeve-like terminali and the-insulationy of'tl'ieelectric'ali` conductor; Fig. 6` is a transverse sectional viewztakenxon line 6`6-of Fig.y 3; Fig. 71s al transverse sectional-'view taken on line --l of Fig. 3; Fig-.- 8 is atransverse sectionalview "taken on l'ine.18-8` ofrFig'.- 3", all of the parts'in said Figs. 6; 7i ande-being' illustrated a. tool` which operates: to both establish.- electrical connection. between. an' s1eeve;.likea terminal and tli'ef conductiveistr-.andsz of.. ani insulated. wire-f, and also;v curl; or roll-inwardly'theiecircular end' ofl the sleeve@ to; providefa'. tight;v mechanical. connection between:V the sleeve and. the insulated wire.N

A- still;y furtherl object of "myfinventiorr isv` to. pro:- vide; at tool for. applying.sleeve-likef-terminalszto insulated; electrical-1, conductors whereith'e.: tool includes a means.;r for bot-h' dancing; and..-curling: the sleeve withlrespectsto the insulated electricaly con.- ducton for establishing: bothk atrm; mechanical connection. between.- thee-sleeveandi the insulation of.' the;` conductor.- andg an.` electrical. connection between the sleeve and the electrical:` conductor through..- the.insulation thereof..

Other: and. further. objects of. myinvention.- reside in.. va constructionl of; electrical terminal applying` tool-,asset iorth-.morefimly in thefspeci- 'cationhereinafter. following ,by-reference; to the accompanyingpdrawinghinwhicli:

lirurefl-y isairontelevation of!` thea-tool-.embodyin position preparatory= fory performing' a terminal' applying operation;A Fig..- 9? is a. transverse: sectional viewtaken on1line'9`i-9`of Fig: 5"illu`strating the knives displaced to a pQsitiori'in:- whichy the` terminal applying operationis'performed; Fig.

10isk a side elevational View ofthevcollet chuck through which theterminalf capped end of the wire is introduced; Fig'.` llfis a vertical' sectional view througlithe: collet chuck'rof 1'0 taken on. line I I-I li of Fig. 12;. Fig.. l2 is altransversesectional View.y through"` the colletxchuclcfof Fig.. 10 online l2--I 2; thereof; Fig: 13 ai transverse; sectional View taken Online .-l'31`- lf3' of Fig. 3i and .illustrata ing the connection of the-.actuating means' with the operating mechanismv of thev tool; Fig. 14fisa perspective view of onek of.. the.' knives employed infthe too-1. for lanCing: the. material of; thef sleeve'- like terminali into kpositioni for' establishingrelec'- trical connection with they electrical conductor through the insulation of. the.- conductor; Fig. 15 is a fragmentary portion of the end of an insulated conducto-r. showing asleeve-liketerminal applied thereto in accordance; with my invention.; Fig, 16 is an enlarged fragmentary View. ofthe knives in position preparatory for a lancing operationy and, showing the .sleeve-like .terminalv centered 4within the :spring collet chuck. preparatory for a curlingcperation;,andFig 17. isaview-simi.-V larI to. the. View.` 16 but. illustrating the relative position of the parts when both the l to the ends of electrical conductors.

however that the mechanism of my invention islancing and curling operations have been completed. y

I have illustrated my invention as embodied in a hand tool for applying sleeve-like members The 'fact applied to a hand tool does not preclude the use of the same mechanism in a machine which may be hand or foot operated or motor operated for applying the sleeve-like terminals to the endsv of electrical conductors. Accordingly, throughout trated at Ila, a cylindrical portion of smaller section shown at IIb, a further cylindrical por# tion of still smaller section shown at Ilc and frusto-conical end sections illustrated at I Idl and' lle. The section I Ic of the chuck provides an internal shoulder against which :the raw peripheral edge of the sleeve-like terminal I abuts as the plunger 3 forces the terminal against the shoulder ofthe section IIc from the position' illustrated in Fig. 16 tothe position illustrated v in Fig. 17. The shoulder of section `I Ic is reprethespecilcation I desire that it be understood y f I that the hand tool shown is .illustrative of one of the uses of my invention and that the actuation of the part's of the device may be vperformed by any manual or automatically operated ma-y chine.

sented at Il? and is" so curved that asthe raw edge of sleeve I5 is forcedagainst the shoulder,

the material of sleeve I5 is forced to curl inwardly Y to form a substantially moisture-tight connection with the insulation material I'I of the electrical conductor I6 as ,shown in Fig. 17. The piercing foperation which is commenced by entry ofthe Referring 'to the drawings in detail, reference shown. A sleeve 2 is telescopically disposed within the shell I and is adapted to be reciprocated therein for controlling the mechanism of the tool. The sleeve 2 has an end lug 2a project- 1 ing therefromapertured at 2b to allow the entry of securing member 2c. The securing member 2c may be avscrew threaded bolt having a fasten- I ingv nut thereon or a rivet or other transverse member.

The transverse member 2c passes through the coacting interleaved portions of the l actuating'members I2a andjIZb. Portions of actuating member I2a shown at I2c and I2cl overlap as shown and are interconnected by the transversely extending member 2c. The actuating members I2a and |21) are each provided with pins 8a and 8b displaced from the transverse member 2c and which form pivotal connections for links 5o, and 5b which are pivotally connected by means of pins 9a and 9b with the outstruck hollow. side portions la and 1b. The action of this linkage is such'that as actuating members I 2a and' I 2b arevbrought together from the normal as illustrated inFig. 5v. y p

The interior of the sleeve v2 has internal bores of different diameters as represented at 2d and 2e. In the portion of the sleeve 2d the expansive coil spring 'IY is housed while in the portion 2e of the sleeve the coil spring 6 and the balance of the mechanism is housed. The change in internal y diameter of the bore of sleeve 2 takes place along a transverse section illustrated at 2f. Just above v the shoulder thus formed the plunger 3 is normally `yieldingly supported on coil spring 1. The

plunger 3 is a precisionmachined element having an end flange 3a. thereon which is seated upon the end of coil spring 1. The coil spring 6 is concentrically disposed about the cylindrical body portion of the plunger 3 and is seated against the head 3a at one end and against the end of the cylindrical collet chuck member II. That is v to say, coil spring forms a continuously expansive means disposed between the head formed by iiange 3a on plunger 3 and thevend of the cylindrical collet chuck member I I.

The cylindrical collet chuck member I I is shown more clearly in Figs. 10, 11 and 12 and includes an inner borel of varying internal diameters, that is, a cylindrical portion of uniform section illuspoints of the knives into the sleeve-like terminal I5 as will be hereinaftervdescribed is'completed as a compositek shearing andlancing operation as represented in Fig. 17 for completing electrical connection between the material of sleeve rI5 and the wire I6. I 1

The upper end of the colletchuck 'member is provided with an annular shoulder I If having an angularly inclined cylindrical surface Ilg theref of. The projecting end of the collet chuck member is represented at vvvIIh. The collet chuck member is slotted throughout substantiallyrthe entire length thereof in the positions Aillustrated at IIz' whereby the portions of the collet chuck member are rendered resilient andare adapted to be moved toward each other toa collapsed position or to spring outwardly away from each other to normal position. The slots 'lli thus formed are of lsuiicient lwidth to permit the angular movement of the knives shown at 4a, 4b and 6c therethrough.

The construction of the knives clearly in Fig. 14, from which it will be seen that one end of each knife is'rounded as represented at lla. andtapered toward the opposite end as represented at Iab A cam shaped lug lla" extends from the. tapered portion da of the knife. The portion Aa" of the knife has a recessl av formed therein of suicient length to span the annular head 3b of the plunger 3 as shown in Figs. 3, 4 and 5. The cam shaped lug auf". is-

proportioned to t wholly within the annular recess 3c of'plunger 3 when the knives are moved inwardly to pierce the material of the sleevelike terminal represented at I 5 in Fig. 15. The knives are each provided with astraight face 4V from which extends the piercing or lancing knife blade 4V1. The piercing or lancing knifev blade IVI is of isosceles formation having a triangular shaped face IV1I terminating in the pointA of the piercing knife blade 4W. This triangular'shaped face lances orY shears `the material of the sleevelike terminal I5 as the point of the piercing or lancing blade 4V1 shears the material of the sleeve-like terminal I5 as illustrated rin Figs. 5 and 17, thereby establishing an electrical connection between the electrical conductor I6 and the sleeve-like terminal I 5 through the insulation material Il.

The material of `the metallic sleevef-like terminal I5 is pierced, sheared and bent Ainwardly from the cylindrical portion of the sleeve-like terminal I5 as represented at I8 vin Figs.5, 15 and 17. This operation is effected by the composite movement of plunger 3 axiallyk within the spring collet chuck II and the'radial-'inward movement is shown more Vhood" formed byu the fshell I.

ori the;y knives-fundercontrol ofi-f the.: actuatingmeans- I-Z'aff-andi- |2215` That isftorsay; the action of" thel actuating. means Ii2^av and- |227: ten'dsf to for-oei plungerr 32 througlr` the springt collet chuck fromthe-position: illustrated inwlig.l 16 to the position. shownf in- Fig. .1:7 Asiftl-iel knives-pierce the.Y materialfo the sleeve-like terminala I 5i there isax movement of* plunger` 3i toward theshoulder- I'I'q" of the-f collet chuck suclithatitlie curling-op"- eration toforce the-material of." the sleeve-like terminal I5 inwardly to form-a mechanica-Leon nection` withthe insulation: material I-'Ifis efl'ected and alsothe-sleeve is moved7 again-stithe knives-t0 effect a: lancingx orshearing-f operationv which for-mst'lie conductingtongues1 I8. The conducts ing tonguesthus formed establish:` an, electrical circuit between` the-electrical. conductorand the sleeve-like-terminalf I L5 tionA 4-Vmiwhicl1i-` in normal f position illustrated in Figs'. 3 and4-fpro-ject-, under-#tha action of springs 6 and" 'I-, to positions against the`r insidev` of-V the The springs-I 6 and 1^ tending toecontinuously force the knives-to an openposition; pressy the knivesto thepositions illustrated in` Fig. 31 where the rear face of -each knifey represented* at 41X is forced against' the inside ofthebore-2e of the sleeve- 2. In thisposition-` the cam-likeL ends-Wmfproject beyond' the peripheraledge of the sleeve- `2 with the knives 4V!" retracted Vbetween slots II. In thisretracted position the end of/ the -finsulatedconductor with the terminalv sleeve.V I5-f slipped` thereon maybe introduced-betweenthe-knives preparatoryto the terminal applying-operation; Inthe form of the terminal illust-rated in-Fig'; 15";` a' tip- IQextends from the sleeve- I 51. The-plunger 3;'is provided witha complementary; shaped-A boreA for receivingthe tip I 9S andallowing-'the' sleeve-likeL portion ofthe terminal to' be located.d inregistry. position with the-several kniveskVIl Asythedevice is moved tothepositionillustrated' in- Fig4-`, theknives comm-enceto engage the sleeve-like terminal IE5 Asthis operation-iscontinued-'tlie s knives pierceY the--sleeve-li-keterminal I 5-*ashere;-

t'oforeexplained; The-operation thereafter isa composite shearing andL lancing movement brought aboutv by--t-he: axial-f move-ment of plunger 3' and' theradial'jmovement. ofthe'knives. The material ofy the sleeveelike terminal is.` actually moved-againstzthe knives-asthe knives moveinward-ly so that thelancingj'or,l shearing-operation is performed"l quickly.- Thesmall triangular shaped portions of the' material of the sleeve-like terminal' I5'- are alsov bent inwardly; by thissame operation as; illustratedin Fig; lilyv to establish electrical connection with the strandstoffjthe wire I I throughf the-'insulation I1. The,A extent. to which the raw-e1dgfe ofthe sleeve-like terminal" is curled into the material` of the insulation on the conductor is determined by the shape ofi the shoulder Ila; on.thespring collet chuck and'the proportionsofthe interior of the spring collet chuck with respect to the length ofthe terminal sleeve. 1

The actuating means I 2a and I2b are employed to effect the foregoing collapsing operation. When the actuating means is released the springs 6 and 'I force the knives to retracted positions illustrated in Fig. 3 preparatory for a repeat operation.

As heretofore explained, in lieu of the hand actuated means I2a and I2b, I may provide foot actuatng means or motor drive means for effecting a terminal applying operation. v

- limiting sense.

' I-havee shown-myrinventionf iny one: off its-pre:A frredi embodiments-for applying af cylir'i'dri'ca'l4 sleeve-likev-tipf-or terminali tothe endE of an elec tri-cal conductor. It" will be understood' thatvariousfformsof'terminals-may be'applied-to the ends ofan electrical conductor in-r` accordance witl'lvmyl invention. Ill'rat-` is.' a flaty terminalA having an eyelet--orfa yokeeshape'd endr with a sleeve-like portion formed integral therewith` may: be applied to-the vend'fof an electrical conductor inI accordanceewith my invention. Moreover a terminalof square or` rectangularsectionlv may be applied to the-end'of the-conductor in lieu-oi' the-cylindrical sleeve-like terminal illustrated-fY herein. The toolo-ffmy-invention is-also applicable to terminalsof deformedf or split sectionconstruction as distinguished from the solidicylindr-icalsleeve terminalv illustratediherein.' I may also vary-the number ork-ni'veswhichc areemployed in the-tool" and it--i's to begund'erstoodi that the illustrations-herein are to--be-erega-rded in the broadsensef'and not-in the- Wliile-I`have--explaine-dfmy invention in certain preferred embodiments, I realize that modifications maybemade and If desire thatgitbe understoodthat-no limitations upon my--i'nventionare intended otherthanmay beimposed by the scopeofthe-appended claims.

Wha-t I- claim as --new' and'desire to secureA by Letters Patent of-the UnitedStates; iszasfollows-L 1;- Mechanism for applying terminals to electricalconductors comprisingashell havinga restricted'opening` in-one-end thereofgasleeve movjab1'e-into`and outofsaid-jshell; a spring-,collet chuckmember yieldinglyfsupported intheendof said sleeve, a'plurality-of radially movableknives displace said material inwardly into electrical connection with said? electrical conductor through the insulation thereof, and means for applying pressure tothe aforesaid' means for-movingv said kniVcs-jinwardl'ytoward the terminal encased eiectrical'conductor.- Y

2; iA' device for-applying sleeve-like members to insulated electrica-wiret and' establishing electrical connection therewith-i comprising -a socket mem-. berr having a multiplicity of separable portions normally-spaced for-permitting the insertion of a terminal vsleeve cappedinsulatedwire therebeftween', knife members rockably-mounted between said 'separable' portions, said knife-members having" bla-des thereonr for` piercing thematerial of theterminal-sleeve and displacing material from said terminal.' sleeveinwardly for establishing electricaly connection wthgsaid wire, means-for applying pressure-tosaidknife members-for movingjsaidlkniffe-membersinwardly toward said tere minalsleeve-y and--spring--means--for retractingsaid knife members.

3. A device for applying sleeve-like members to insulated electric wire and establishing electrical connection therewith comprising a socket member having a multiplicity of separable portions normally spaced for permitting the insertion of4 a terminal sleeve capped insulated wire therebetween, knife members rockably mountedbetween said separable portions, said knife members having blades of isosceles shape for piercing and displacing triangular portions of the material of said terminal sleeve through the insulation f of the insulatedelectrical conductor and into electrical connection with said'wire, means for` applying pressure to said knife members for moving said knife members inwardly toward said terminal sleeve, and coil springs for retracting said knife members for releasing said conductor with the terminal sleeve applied thereon.

4. A device for app-lying sleeve-like members to insulated-electric wire and establishing electrical connection therewith comprising a socket member having a multiplicity of resiliently mounted portions with radial slots therebetween, knife members angularlyA shiftable through the radial slots of said socket member, means for angularly displacing said knife members through the slots in said socket member for piercing the material of a, terminal sleeve inserted into said socket and displacing portions of said material into electrical connection with said electric wire, and means for applying force to the aforesaid means forl member is shifted with respect to the socketk member for piercing the material of a sle'eve-like terminal carried by an electrical conductor in-` sertable between said knives inretracted position with the raw edge of the sleeve-like terminal enveloped by the internal shoulder formed by said collet chuck for displacing the material of the sleeve-like terminal into electrical connection with the insulated electrical conductor and curl` ing the raw edge of said sleeve-like terminal into connection with the insulation of said insulated electrical conductor, said knives being retractible from said engaging position when said shell is shifted with respect to said socket member, and means for applying force to said shell member for displacingr said collet chuck with respect to said socket memberfOr moving said knives inwardly` toward said sleeve-like terminal. y

' 5. A device for applying sleeve-like members to insulated electrical conductors and establishing electrical connection therewith comprising a cy` lindrical socket member, a shell member slidable over said cylindrical socket member, a pair of coil springs disposed in said socket member, a plunger having a headed end yieldingly supported by one of said coil springs, a collet chuck slidably disposed over said plunger, saidcollet chuck having longitudinally extending portions with radially disposed Aslots therebetween, knives rockably mounted in the radially disposed slots, said other.

coil spring being disposed between the headed end of said plunger and said collet chuck, said knives being movable radially inwardly for piercing the cylindrical sleeve-like member carried by the electrically insulated conductor inserted through the open end of said collet chuck for establishing connection between the material of said sleeve-like member and the electrical conductor, and means for applying .pressure to said vknives for moving said knives inwardly toward said rsleeve-like member.

7. A device lfor applying sleeve-like members to insulated electric wire and establishing electrical connection therewith comprising a socket member having a multiplicity of` resiliently mounted portions with radial slots therebetween,

moved for curling said sleeve inwardly against the insulation of the electric wire, and means for angularly moving said knife members lthrough the slots in said socket member for piercing and lancing the material ofthe terminal sleeve and establishing connection between the material of the terminal sleeve and the electric wire.

8. A device for applying sleeve-like members to insulated electric wire and establishing electrical connection therewith comprising a socket member having a multiplicity of resiliently mounted portions with radial slotstherebetween,

knife members angularly shiftable between the radial slots of said socket member, a plunger` axially movable through said socket member and operative kto form a support for the sleeve-like capped end of an insulated electric wire introduced through the socket member, means for compressing the end 'of said 'socket member against the insulation of the electric wire introduced therein in a position displaced from the raw edge ofthe sleeve-like terminal carried thereon, an annular shoulder formed interiorly of said socket member, meansfor displacing said plunger for moving the sleeve-likel `terminal thereon to a position in which the raw edge of the sleevelike terminal is engaged by the said shoulder and rolled inwardly tov grip the insulation .of the electric wire, and means for moving said knife meinbers radially inward for piercing and lancing the material of said sleeve-like terminal for establishing connection betweenthe. sleeve-like terminal and the electric wirethrough the insulation thereof. c


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U.S. Classification29/566, 81/349, 81/350, 29/751
International ClassificationH01R43/04, H01R43/042
Cooperative ClassificationH01R43/0424
European ClassificationH01R43/042C