US3839776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire stripping and crimping apparatus and method
Assignee: TDK Micronas GmbH
•
Filing: 1973-08-20
•
Granted: 1974-10-08
•
Expires: 1993-08-20
Abstract
Abstract An apparatus and method for stripping insulation from an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire. The apparatus includes upper and lower crimping jaws for performing the crimping operation. A wire clamping device is positioned in front of the lower jaw. A wire insulation stripping mechanism is mounted behind the lower jaw for movement between forward and rearward positions. A mechanism is provided for feeding a plurality of contacts joined side-by-side to a carrier strip between the crimping jaws. The ferrules of the contacts open downwardly. When the stripping mechanism shifts to its rearward position to strip insulation from an end portion of the wire, the upper crimping jaw lowers to sever a contact from the carrier strip and crimp the contact ferrule onto the wire. When the upper crimping jaw rises, the contact feeding mechanism operates to index an additional contact into position for crimping to another wire.
Inventors
- 👤 R Anderson
- 👤 E Grimsby
- 👤 K Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:47
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/04; H01R43/048; H01R43/05; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49174; Y10T29/49181; Y10T29/49183; Y10T29/51; Y10T29/5147; Y10T29/5148; Y10T29/5149; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53209; Y10T29/53213; Y10T29/53235
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
284 words
An attachment for a press for stripping the insulation from an end portion of an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire comprising: a die set including a top plate and a bottom plate, said top plate being adapted to be fixed to the press ram and the bottom plate being adapted to be fixed to the press table, upper and lower crimping jaws connected to said top and bottom plates, respectively; wire-clamping means and insulation-stripping means each mounted on said bottom plate adjacent to said lower crimping jaw, and insulation-severing blades being provided on said insulation stripping means; means mounting said insulation-stripping means for movement from a forward position adjacent to said wire-clamping means to rearward position; means for sequentially feeding a plurality of said contacts, with the ferrules thereof open downwardly between said crimping jaws; means for moving said wire-clamping means into engagement with an insulated wire; means for operating said insulation-severing blades while said insulation-stripping means is in said forward position and said wire is held by said wire-clamping means to sever the insulation on said wire; means for shifting said insulation-stripping means to said rearward position while said wire is held by said wire-clamping means to strip the severed insulation from said wire; and means for operating said press ram upon movement of said insulation-stripping means to said rearward position to lower said upper crimping jaw into engagement with said lower crimping jaw, said lowering of said upper crimping jaw causing one of said contacts to move downwardly so that said ferrule will embrace the bared end portion of said wire and become crimped thereto.
Claim 2
Dependent Claim
284 words
An attachment for a press for stripping the insulation from an end portion of an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire comprising: a die set including a top plate and a bottom plate, said top plate being adapted to be fixed to the press ram and the bottom plate being adapted to be fixed to the press table, upper and lower crimping jaws connected to said top and bottom plates, respectively; wire-clamping means and insulation-stripping means each mounted on said bottom plate adjacent to said lower crimping jaw, and insulation-severing blades being provided on said insulation stripping means; means mounting said insulation-stripping means for movement from a forward position adjacent to said wire-clamping means to rearward position; means for sequentially feeding a plurality of said contacts, with the ferrules thereof open downwardly between said crimping jaws; means for moving said wire-clamping means into engagement with an insulated wire; means for operating said insulation-severing blades while said insulation-stripping means is in said forward position and said wire is held by said wire-clamping means to sever the insulation on said wire; means for shifting said insulation-stripping means to said rearward position while said wire is held by said wire-clamping means to strip the severed insulation from said wire; and means for operating said press ram upon movement of said insulation-stripping means to said rearward position to lower said upper crimping jaw into engagement with said lower crimping jaw, said lowering of said upper crimping jaw causing one of said contacts to move downwardly so that said ferrule will embrace the bared end portion of said wire and become crimped thereto.
Claim 3
Dependent Claim
59 words
An attachment as set forth in claim 1 wherein: said contact feeding means sequentially feeds a plurality of said contacts joined side by side to a carrier strip in a stepwise fashion between said crimping jaws; and said upper crimping jaw severs each consecutive contact from said carrier strip during lowering of said top plate by said press ram.
Claim 4
Dependent Claim
34 words
An attachment as set forth in claim 2 including: stop means on said bottom plate engageable by said carrier strip prior to crimping of said ferrule to said bared end portion of said wire.
Claim 5
Dependent Claim
42 words
An attachment as set forth in claim 1 including: hook means carried by said top plate operable to remove sAid wire with a contact crimped thereto from said lower crimping jaw during the raising of said top plate by said press ram.
Claim 6
Dependent Claim
75 words
An attachment as set forth in claim 2 wherein: said contact feeding means is mounted on said top plate and includes pawl means engageable with said carrier strip: and cam means on said bottom plate engageable by said feeding means to actuate said pawl means during raising of said top plate by said press ram to index said carrier strip one position and thereby bring an additional contact into position for crimping to a wire.
Claim 7
Dependent Claim
23 words
An attachment as set forth in claim 1 wherein: said lower crimping jaw is positioned between said wire-clamping means and said insulation-severing blades.
Claim 8
Dependent Claim
62 words
An attachment as set forth in claim 1 wherein: said contact feeding means is mounted on said top plate and sequentially feeds a plurality of said contacts joined side by side to a carrier strip in a stepwise fashion below said upper crimping jaw; and said crimping jaw severs each consecutive contact from said carrier strip during lowering of said top plate.
Claim 9
Dependent Claim
40 words
An attachment as set forth in claim 7 including: stop means on said bottom plate adjacent said lower crimping jaw and engageable by said carrier strip prior to crimping of said ferrule to said bared end portion of said wire.
Claim 10
Dependent Claim
42 words
An attachment as set forth in claim 7 including: hook means carried by said top plate operable to remove said wire with a contact crimped thereto from said lower crimping jaw during the raising of said top plate by said press ram.
Claim 11
Dependent Claim
80 words
An attachment as set forth in claim 7 wherein: said contact feeding means includes a cam follower and a pawl pivotally connected to said cam follower, said pawl being engageable with said carrier strip; and cam means on said bottom plate engageable by said cam follower to actuate said pawl during raising of said top plate by said press ram to index said carrier strip one position and thereby bring an additional contact into position for crimping to a wire.
Claim 12
Dependent Claim
173 words
An attachment as set forth in claim 1 wherein: said insulation-stripping means includes a slide member carrying said insulation-stripping blades; said mounting means comprises a track upon which said slide member is oscillatable between the forward and rearward positions of said insulation-stripping means; a plate slidable relative to both said track and said slide member and movable in the same direction as said slide member, said lower crimping jaw being fixed to said slidable plate and being positioned forward of said upper crimping jaw when said slidable plate and slide member are in their forwardmost positions relative to said track; a shoulder adjacent to the rear of said slidable plate engageable by said slide member when the latter shifts rearwardly on said track to said rearward position thereby shifting said slidable plate rearwardly; and stop means on said bottom plate engageable with said slidable plate to limit the rearward movement thereof such that said lower crimping jaw becomes vertically aligned with said upper crimping jaw upon said slide member reaching said rearward position.
Claim 13
Dependent Claim
46 words
An attachment as set forth in claim 1 wherein said insulation-stripping blades include a fixed blade and a movable blade, and including: adjustable stop means engageable with said movable blade to control the spacing between said blades to accommodate for different size wires to be stripped.
Claim 14
Dependent Claim
59 words
An attachment as set forth in claim 12 wherein: said adjustable stop means comprises a shaft rotatable in said insulation-stripping means; said shaft having a plurality of ramps formed thereon lying in the path of movement of said movable blade, each said ramp being spaced a distance from the longitudinal axis of said shaft different from the other ramps.
Claim 15
Dependent Claim
59 words
An attachment as set forth in claim 13 wherein: said shaft is threadedly engaged in said insulation-stripping means whereby rotation thereof wilL shift said shaft longitudinally; and each said ramp is inclined at an angle relative to said axis of said shaft so that one end of each ramp is closer to the axis than the other end thereof.
Claim 16
Dependent Claim
76 words
An attachment as set forth in claim 1 wherein: said insulation-severing blades include a front blade adjacent to said lower crimping jaw on said bottom plate and a rear blade behind said front blade, each said blade having a cutting face thereon; and the angle of the cutting face on said front blade relative to a horizontally extending axis positioned between said blades is less than the angle of the cutting face on said rear blade.
Claim 17
Dependent Claim
28 words
An attachment as set forth in claim 15 wherein: said front blade cutting face angle is about 45* and said rear blade cutting face angle is about 75*.
Claim 18
Independent Claim
247 words
An apparatus for stripping the insulation from an end portion of an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire comprising: a press including an upper movable member and a lower stationary member; upper and lower crimping jaws connected to said members, respectively; wire-clamping means and insulation-stripping means each mounted on said stationary member, said insulation-stripping means being provided with insulation-severing blades; means mounting said insulation-stripping means for movement from a forward position adjacent to said wire-clamping means to a rearward position; means for sequentially feeding a plurality of said contacts, with the ferrule thereof open downwardly, between said crimping jaws; means for moving said wire-clamping means into engagement with an insulated wire; means for operating said insulation severing blades while said insulation-stripping means is in said forward position and said wire is held by said wire-clamping means to sever the insulation on said wire; means for shifting said insulation-stripping means to said rearward position while said wire is held by said wire-clamping means to strip the severed insulation from said wire; and means for lowering said movable member, upon movement of said insulation-stripping means to said rearward position, to lower said upper crimping jaw into engagement with said lower crimping jaw, said lowering of said movable member causing one of said contacts to move downwardly so that said ferrule will embrace the bared end portion of said wire and become crimped thereto.
Claim 19
Independent Claim
247 words
An apparatus for stripping the insulation from an end portion of an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire comprising: a press including an upper movable member and a lower stationary member; upper and lower crimping jaws connected to said members, respectively; wire-clamping means and insulation-stripping means each mounted on said stationary member, said insulation-stripping means being provided with insulation-severing blades; means mounting said insulation-stripping means for movement from a forward position adjacent to said wire-clamping means to a rearward position; means for sequentially feeding a plurality of said contacts, with the ferrule thereof open downwardly, between said crimping jaws; means for moving said wire-clamping means into engagement with an insulated wire; means for operating said insulation severing blades while said insulation-stripping means is in said forward position and said wire is held by said wire-clamping means to sever the insulation on said wire; means for shifting said insulation-stripping means to said rearward position while said wire is held by said wire-clamping means to strip the severed insulation from said wire; and means for lowering said movable member, upon movement of said insulation-stripping means to said rearward position, to lower said upper crimping jaw into engagement with said lower crimping jaw, said lowering of said movable member causing one of said contacts to move downwardly so that said ferrule will embrace the bared end portion of said wire and become crimped thereto.
Claim 20
Dependent Claim
23 words
An apparatus as set forth in claim 17 wherein: said lower crimping jaw is positioned between said wire-clamping means and said insulation-severing blades.
Claim 21
Dependent Claim
63 words
An apparatus as set forth in claim 18 wherein: said contact feeding means is fixed to said movable member and sequentially feeds a plurality of said contacts joined side by side to a carrier strip in a stepwise fashion below said upper crimping jaw; and said upper crimping jaw severs each consecutive contact from said carrier strip during lowering of said movable member.
Claim 22
Dependent Claim
122 words
In an apparatus for severing the insulation on an insulated wire, including a support and fixed and movable insulation severing blades mounted on said support, the improvement which comprises: adjustable stop means engageable with said movable blade to control the spacing between said blades to accommodate for different size wires; and said stop means comprising a shaft rotatable in said support, said shaft having a plurality of ramps formed thereon lying in the path of movement of said movable blade, each said ramp being spaced a distance from the longitudinal axis of said shaft different from the other ramps, whereby selective rotation of said shaft will bring a ramp having a predetermined elevation into position for abutting engagement with said movable blade.
Claim 23
Dependent Claim
122 words
In an apparatus for severing the insulation on an insulated wire, including a support and fixed and movable insulation severing blades mounted on said support, the improvement which comprises: adjustable stop means engageable with said movable blade to control the spacing between said blades to accommodate for different size wires; and said stop means comprising a shaft rotatable in said support, said shaft having a plurality of ramps formed thereon lying in the path of movement of said movable blade, each said ramp being spaced a distance from the longitudinal axis of said shaft different from the other ramps, whereby selective rotation of said shaft will bring a ramp having a predetermined elevation into position for abutting engagement with said movable blade.
Claim 24
Dependent Claim
58 words
An apparatus as set forth in claim 20 wherein: said shaft is threadedly engaged in said support whereby rotation thereof will shift said shaft longitudinally; and Each said ramp is inclined at an angle relative to said axis of said shaft so that one end of each ramp is closer to the axis than the other end thereof.
Claim 25
Independent Claim
110 words
A method of attaching a contact having a U-section ferrule to an insulated wire comprising the steps of: positioning one of said contacts between upper and lower crimping jaws with said ferrule opening downwardly; holding an insulated wire in a fixed clamp adjacent to said lower crimping jaw; severing the insulation on said wire and stripping the severed insulation from said wire while holding said wire in said fixed clamp to provide a bared end portion of said wire; and lowering said upper crimping jaw to carry said contact downwardly until said ferrule embraces said bared end portion of said wire and becomes crimped thereto in said lower crimping jaw.
Claim 26
Independent Claim
110 words
A method of attaching a contact having a U-section ferrule to an insulated wire comprising the steps of: positioning one of said contacts between upper and lower crimping jaws with said ferrule opening downwardly; holding an insulated wire in a fixed clamp adjacent to said lower crimping jaw; severing the insulation on said wire and stripping the severed insulation from said wire while holding said wire in said fixed clamp to provide a bared end portion of said wire; and lowering said upper crimping jaw to carry said contact downwardly until said ferrule embraces said bared end portion of said wire and becomes crimped thereto in said lower crimping jaw.
Claim 27
Dependent Claim
60 words
A method as set forth in claim 22 wherein a plurality of said contacts are joined side by side to a carrier strip and including the additional steps of: repeating the foregoing series of steps; and sequentially feeding said plurality of contacts in a stepwise fashion between said crimping jaws following the crimping operation of said foregoing series of steps.
Claim 28
Dependent Claim
28 words
A method as set forth in claim 23 including the additional step of: separating each said contact from said carrier during the lowering of said upper crimping jaw.
Claim 29
Dependent Claim
69 words
A method as set forth in claim 24 wherein said contact is separated from said carrier strip by: providing a stop member adjacent to said lower crimping jaw; engaging said carrier strip with said stop member; and engaging said upper crimping jaw with said contact while said strip is engaged with said stop member to shear said contact from said strip during the lowering of said upper crimping jaw.
Claim 30
Dependent Claim
63 words
A method as set forth in claim 22 including the steps of positioning said lower crimping jaw forwardly of said upper crimping jaw when initially holding said wire by said clamp; and shifting said lower crimping jaw rearwardly to a position in vertical alignment with said upper crimping jaw following severing of said insulation and prior to lowering of said upper crimping jaw.
Claim 31
Dependent Claim
26 words
A method as set forth in claim 26 wherein: said lower crimping jaw is shifted rearwardly simultaneously with said stripping of said insulation from said wire.
Claim 32
Dependent Claim
214 words
In an apparatus for stripping the insulation from an end portion of an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire comprising a crimping jaw attachment to a press ram and table, wire-clamping means and insulation-stripping means, said insulation-stripping means including insulation-severing blades, means mounting said insulation-stripping means for movement from a forward position adjacent to said clamping means to a rearward position, means for moving said wire-clamping means into engagement with an insulated wire, means for operating said insulation-severing blades while said insulation stripping means is in said forward position and said wire is held by said wire-clamping means to sever the insulation on the wire, means for shifting the insulation-stripping means to said rearward position while said wire is held by said wire-clamping means to strip the severed insulation from said wire, the improvement which comprises: means for sequentially feeding a plurality of said contacts joined side by side to a carrier strip, with the ferrules thereof open downwardly, between said crimping jaws; and means for lowering said press ram upon movement of said insulation-stripping means to said rearward position to separate one of said contacts from said strip and to crimp the ferrule thereof to said wire.
Claim 33
Dependent Claim
214 words
In an apparatus for stripping the insulation from an end portion of an insulated wire and crimping a U-section ferrule forming a part of an electrical contact to the bared end portion of the wire comprising a crimping jaw attachment to a press ram and table, wire-clamping means and insulation-stripping means, said insulation-stripping means including insulation-severing blades, means mounting said insulation-stripping means for movement from a forward position adjacent to said clamping means to a rearward position, means for moving said wire-clamping means into engagement with an insulated wire, means for operating said insulation-severing blades while said insulation stripping means is in said forward position and said wire is held by said wire-clamping means to sever the insulation on the wire, means for shifting the insulation-stripping means to said rearward position while said wire is held by said wire-clamping means to strip the severed insulation from said wire, the improvement which comprises: means for sequentially feeding a plurality of said contacts joined side by side to a carrier strip, with the ferrules thereof open downwardly, between said crimping jaws; and means for lowering said press ram upon movement of said insulation-stripping means to said rearward position to separate one of said contacts from said strip and to crimp the ferrule thereof to said wire.
References Cited (Backward Citations)
US3541654A
Cited
US3570100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |