US3628402A - Wire stripping and wrapping gun - Google Patents

Wire stripping and wrapping gun Download PDF

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Publication number
US3628402A
US3628402A US44827A US3628402DA US3628402A US 3628402 A US3628402 A US 3628402A US 44827 A US44827 A US 44827A US 3628402D A US3628402D A US 3628402DA US 3628402 A US3628402 A US 3628402A
Authority
US
United States
Prior art keywords
insulation
wire
knife
cutting edge
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US44827A
Other languages
English (en)
Inventor
Bruno Staiger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent NV
Original Assignee
International Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3628402A publication Critical patent/US3628402A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/033—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wrapping or unwrapping wire connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
    • H02G1/1204—Hand-held tools

Definitions

  • a wire stripping and wrapping gun includes a wrapper pin, a lever knife and an actuating device.
  • the actuating device moves the wrapper pin axially and causes the knife to strip the insulation from the wire.
  • the cutting edge of the lever knife is bifurcated to include a channel wide enough to receive the bare wire.
  • a circular aperture is provided to be contiguous with the channel to relieve the pressure tending to be built up in the insulation being stripped and causing the insulation to crimp or jam the knife.
  • the crimping and jamming may be further alleviated by making the inner surface of the .knife facing the insulation concavely clurvatured.
  • the present invention relates to a wire stripping and wrapping gun or tool for cutting and stripping wires, as well as for making wire-wrap joints, and, more particularly, to an improved cutting edge in the knife provided in such a gun or tool.
  • the gun includes a wrapper pin slidably mounted within a centrally and axially apertured wrapper sleeve for imparting the wrapping and stripping movement, and a lever knife with the cutting edge thereof pivotally mounted on the wrapper sleeve. As the wrapper pin is axially moved the cutting edge is lowered upon the wire against an upstanding portion of the wrapper pin positioned therebelow, and cuts the insulation on both sides and, in the course of a further axial movement, the insulation is stripped from the wire.
  • the lever knife has a simple straight cutting edge. It has been found that the straight cutting edge cuts the edges of the insulation only partially and does not readily remove the stripped insulation.
  • This and other objects of the present invention are achieved by providing a channel in the cutting edge of the knife wide enough to receive the bare metal wire and a curved aperture contiguous therewith.
  • the bifurcated cutting edge formed by the channel is designed to cut through both sides of the insulation of the wire completely, and the circular aperture prevents the insulation from being crimped or clamped along the cutting edge and piling up as it is being stripped.
  • the inner surface of the bifurcated cutting edge facing the insulation being stripped is concavely curvatured to further assure avoidance of the crimping and clamping and maintain mechanical stability of the cutting edge.
  • the width of the channel is made to correspond to the diameter of the bare wire after the insulation has been stripped.
  • the novel configuration of cutting edge of the present invention assures clean cutting of the insulation without causing any damage to the bare wire, and prevents the portion of the insulation from piling up and jamming the lever knife to hinder the subsequent stripping operation.
  • FIG. 1 shows a partially sectioned view of a portion of the wrapping and stripping gun including a wrapper sleeve and pin, a lever knife, and a portion ofwire which is stripped,
  • FIG. 2 shows a side view of a portion of the wrapper pin and the lever knife
  • FIG. 3 shows the arrangement according to FIG. 2 with the wire insulation partially stripped
  • FIG. 4 shows a front view of the lever knife along section AA in FIG. 3,
  • FIG. 5 shows a sectional view of the cutting edge along section B--B shown in FIG. 4, and
  • FIG. 6 shows a perspective view of the end of the lever knife shown in FIG. 4, with a portion thereof broken away to show the surface configuration of the cuttin ed e.
  • FIG. 2 shows in detail how the lever knife 3, shown in a sectional representation, is lowered upon the wrapper pin 1. In this position the insulation of the wire is cut by the lever knife 3. In the course of the further operation of the wire stripping and wrapping gun, the wrapper pin 1. moves forward and the cutting edge of the lever knife 3 strips the insulation ofi the wire.
  • FIG. 3 shows the relative positions of the lever knife 3 and wrapper pin 1 after the lever knife has cut and stripped the insulation 6 from the bare metal conductor portion 8 of an insulated wire 7 inserted between the wrapper pin 1 and wrapper sleeve 2, in the course of the forward movement of the wrapper pin 1 in the direction along the axis shown by the arrow.
  • the portion of the insulation which should remain on the wire 8, is retained by an upturned portion 10 of the wrapper pin 1.
  • FIGS. 4, 5 and 6 show the novel geometry of the end 4 of the lever knife and the cutting edge.
  • the end 4 includes a channel 12 and a preferably circular aperture 13 contiguous therewith.
  • the two forks l5 and 16 have a concavely curvatured surface at the inner side facing the insulation being cut and stripped.
  • the width of the channel be substantially equal to the diameter of the bare wire so that two portions 18 and 19 of the cutting edge at the tip ends of the two forks 15 and 16 cut the two sides of the insulation sharply and cleanly from the wire.
  • the diameter of the circular aperture is larger than the width of the channel.
  • the circular aperture and the concavely apertured forks 15 and 16 relieve the pressure from the tip end of the insulation being cut, as the insulation is being stripped. This prevents the crimping and clamping which would otherwise build up in the insulation being stripped and cause the stripped insulation to jam against the two portions 18 and 19.
  • a tool for cutting and stripping insulation from a wire conductor comprising: drive means for driving the wire in a longitudinal direction with respect to a central axis of said tool, an apertured sleeve disposed around said central axis, a pin disposed in said sleeve and coupled to said drive means to provide axial movement of said wire within said sleeve, and a lever knife pivotally mounted on said sleeve, and having a bifurcated cutting edge including a channel for receiving said wire and a curved aperture contiguous with said channel, said bifurcated cutting edge being disposed transversely to said wire, said pin having means for pivotally moving said knife and causing said cutting edge to extend through said apertured sleeve and out said insulation upon axial displacement of said pin, said axial movement of said pin thereafter stripping the insulation from the wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Electric Cable Installation (AREA)
  • Knives (AREA)
US44827A 1969-06-16 1970-06-09 Wire stripping and wrapping gun Expired - Lifetime US3628402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930479A DE1930479C3 (de) 1969-06-16 1969-06-16 Abisolier- und Wickelpistole

Publications (1)

Publication Number Publication Date
US3628402A true US3628402A (en) 1971-12-21

Family

ID=5737134

Family Applications (1)

Application Number Title Priority Date Filing Date
US44827A Expired - Lifetime US3628402A (en) 1969-06-16 1970-06-09 Wire stripping and wrapping gun

Country Status (6)

Country Link
US (1) US3628402A (fr)
BE (1) BE752026R (fr)
DE (1) DE1930479C3 (fr)
ES (1) ES380786A1 (fr)
FR (1) FR2054575B2 (fr)
GB (1) GB1244959A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967661A (en) * 1975-09-17 1976-07-06 Vector Electronic Company Insulation slitting and wire wrapping tool
US5632088A (en) * 1995-05-25 1997-05-27 Naso; Dan Cable stripper device
US5745996A (en) * 1994-12-02 1998-05-05 Dyckerhoff & Widmann Ag Of Munich Sheathing cutting device
US20100071528A1 (en) * 2008-09-09 2010-03-25 Kyle Viereck Device for stripping sheathing on unbonded post-tensioning tendons

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696656A (en) * 1953-07-24 1954-12-14 Bell Telephone Labor Inc Tool for making electrical connections

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696656A (en) * 1953-07-24 1954-12-14 Bell Telephone Labor Inc Tool for making electrical connections

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967661A (en) * 1975-09-17 1976-07-06 Vector Electronic Company Insulation slitting and wire wrapping tool
US5745996A (en) * 1994-12-02 1998-05-05 Dyckerhoff & Widmann Ag Of Munich Sheathing cutting device
US5632088A (en) * 1995-05-25 1997-05-27 Naso; Dan Cable stripper device
US20100071528A1 (en) * 2008-09-09 2010-03-25 Kyle Viereck Device for stripping sheathing on unbonded post-tensioning tendons
US8443520B2 (en) * 2008-09-09 2013-05-21 Kyle Viereck Device for stripping sheathing on unbonded post-tensioning tendons

Also Published As

Publication number Publication date
FR2054575B2 (fr) 1973-03-16
DE1930479C3 (de) 1975-04-24
FR2054575A2 (fr) 1971-04-23
DE1930479A1 (de) 1970-12-23
GB1244959A (en) 1971-09-02
BE752026R (fr) 1970-12-16
ES380786A1 (es) 1972-09-16
DE1930479B2 (de) 1974-09-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311