US3776069A - Wire stripper - Google Patents

Wire stripper Download PDF

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Publication number
US3776069A
US3776069A US00215501A US3776069DA US3776069A US 3776069 A US3776069 A US 3776069A US 00215501 A US00215501 A US 00215501A US 3776069D A US3776069D A US 3776069DA US 3776069 A US3776069 A US 3776069A
Authority
US
United States
Prior art keywords
knives
jaws
wire
stage
movement
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
US00215501A
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English (en)
Inventor
L Mugnier
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.)
UTICA TOOL CO
UTICA TOOL CO INC US
Original Assignee
UTICA TOOL CO
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 UTICA TOOL CO filed Critical UTICA TOOL CO
Application granted granted Critical
Publication of US3776069A publication Critical patent/US3776069A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H02G1/1207—Hand-held tools the cutting element not rotating about the wire or cable
    • H02G1/1209—Hand-held tools the cutting element not rotating about the wire or cable making a transverse cut
    • H02G1/1212—Hand-held tools the cutting element not rotating about the wire or cable making a transverse cut using wire or cable clamping means

Definitions

  • ABSTRACT A wire stripper comprising a pair of pivoted arms with hand grips at one end, one arm carrying fixed and movable clamps with outer wire gripping jaws.
  • the clamps are resilient to accommodate different wire sizes.
  • a hairpin-shaped spring between the clamps carries a pair of stripping knives.
  • a carn connected to the movable clamp is actuated 'by the first stage of hand grip squeezing movement to close the jaws and knives,
  • the second stage of squeezing movement retracting the knives to strip the insulation from the wire.
  • the cam releases the jaws and knives, a spring returning the parts to their original position.
  • the invention relates to wire strippers and particularly hand tools for gripping, stripping and releasing insulated wires of different diameters without adjustment.
  • a movable clamp 23 is pivoted at 24 to arm 12 inwardly of fixed clamp 21 and carries a toothed wire gripping jaw 25 at the outer end thereof, facing jaw 22.
  • Clamps 21 and 23 are preferably constructed of steel J 31 which rests in recess 27 of cam 26 when the parts are in their normal open position as shown in the FIG- URE.
  • roller 31 will ride up onto ramp 28, causing clamp 23 to rock clockwise about pivot 24 toward fixed clamp disadvantage of certain prior art constructions is their inability to strip relatively long lengths of wire such as are used in solderless connections.
  • the present invention has as an object the provision of a relatively compact, simple and inexpensively manufactured wire stripper in which it is unnecessary to I make any adjustments to accommodate different wire diameters. It is a further object to provide such a wire stripper in which it is inherently impossible to crush or otherwise damage the wire after the stripping operation, and in which relatively long' lengths of wire may be stripped.
  • the invention comprises a pair of pivoted arms having hand grips at one end, one of the arms carrying fixed and movable clamps with wiregripping jaws
  • a hairpin-shaped spring 32 is disposed between clamps 21 and 23, the bight 33 of this spring being adjacent the outer end of arm 13 where it is retained between lugs 34 and 35 carried by this arm.
  • the outer ends of spring 32 carry facing grooved knives 36 and 37 extending inwardly from jaws 22 and 25 and adapted to penetrate and then strip the insulative sheath of a wire. The degree to which the knives apat their outer ends.
  • the clamps are resilient to accommodate different wire sizes.
  • a pair of knives are movable in response to closing clamp movement to penetrate the insulative sheath of the wire.
  • the clamps and knives are actuated by squeezing the'hand grips. In a first stage of movement, the jaws and knives close, in a second stage the knives are drawn axially to strip the wire, and in the third and final squeezing stage both the jaws and knives are released. Release of the hand grips returns all parts to their original positions.
  • FIGURE is a side elevational view of the wire stripper shown in its open position.
  • the wire stripper is generally indicated at 11 and comprises a pair of arms 12 and 13 pivotedly connected at 14 and having handgrips 15 and 16 respectherefore spreading apart grips 15 and 16.
  • a clamp 21 proach each other during the cutting operation will be a function of the final spacing between the toothed jaws.
  • Spring 32 is retained in position by a tab 38 on clamp 23.
  • the wire to be stripped will be placed between jaws 22 and 25 and knives 36 and 37, with its end opposite the graduated mark 39 on clamp 21 corresponding to the length to be stripped.
  • roller 31 will ride up the slope of recess 27, moving away from pivot 24 and causing rotation of movable clamp 23.
  • Jaws 22 and 25 will squeeze the wire between them, clamps 21 .and 23 deforming if necessary to accommodate larger wire diameters.
  • Spring 32 will partially close under the pressure of the two clamps and its knives will penetrate the insulative sheath of the wire to a degree controlled by the spacing of jaws 22 and 25. Lug 34 will engage the bight of spring 32.
  • roller 31 During the second stage of movement, roller 31 will roll over the portion 28 of the cam and jaws 22 and 25 will remain closed while lug 34 retracts spring 32 which strips ofl' the insulation from the wire.
  • roller 31 In the third and final stage of movement of the arms, roller 31 will drop into recess 29 of cam 26 and clamps 21 and 23 will separate due to the force of spring 32, causing both jaws 22 and 25 and knives 36 and 37 to release the wire.
  • the arms Upon release of hand grips 15 and 16, the arms will retract to their former position under the influence of spring 19, spring 32 being returned by lug 35.
  • a wire stripper comprising a pair of pivoted arms having hand grips at one end, a movable and afixed clamp mounted on a first of said arms, means carried by said arms responsive to squeezing of said hand grips to move said movable clamp toward said fixed clamp, wire gripping jaws carried by the outer ends of said clamps, a pair of knives disposed inwardly of said jaws, said knives being movable in response to said clamp movement from a retracted position to a position penetrating the wire insulation, the degree to which the knives come together being a function of the spacing of said jaws when they grip the wire, said clamps being made of material which is sufficiently resilient to accommodate different wire diameters and being deformable in response to gripping of the wire insulation by said clamps and further squeezing of the hand grips.
  • a wire stripper comprising a pair of pivoted arms having hand grips at one end, a movable and a fixed clamp mounted on a first of said arms, means carried by said arms responsive to squeezing of said hand grips to move said movable clamp toward said fixed clamp, wire gripping jaws carried by the outer ends of said clamps, a pair of knives disposed inwardly of said jaws, said knives being movable in response to said clamp movement from a retracted position to a position penetrating the wire insulation, the degree to which the knives come together being a function of the spacing of said jaws when they grip the wire, said clamps being made of material which is sufl'rciently resilient to accomodate different wire diameters, said means for moving the movable clamp comprising a cam carried by one of the arms and a cam actuating element carried by the other arm, said cam being shaped so that a first stage of squeezing movement of said hand gripswill cause said movable clamp to move toward the fixed clamp,
  • said means for drawing said knives away from said jaws comprising a pair of lugs on said other arm between which the bight of said spring is disposed.
  • a pair of pivoted arms having squeezable hand grips, a fixed clamp and a movable clamp mounted on a first of said arms, a pair of jaws at the outer ends of said clamps movable between a spread-apart position and a position gripping a wire, a pair of knives inwardly of said jaws and movable from a retracted position to a position penetrating the insulative sheath of wire in response to said jaw movement, means responsive to a first stage of squeezing movement of said hand grips to move said jaws to their gripping position and said knives to their penetrating position, means responsive to a second stage of squeezing movement of said hand grips beyond said first stage to move said knives axially away from said jaws to strip the insulative sheath from the wire, means responsive to a third stage of squeezing movement of said hand grips beyond said second stage and before release of said hand grips to cause said jaws and knives to
  • a pair of pivoted arms having squeezable hand grips, a fixed clamp and a movable clamp mounted on a first of said arms, a pair of jaws at the outer ends of said clamps movable between a spread-apart position and a position gripping a wire, a pair of knives inwardly of said jaws and movable from a retracted position to a position penetrating the insulative sheath of a wire in response to said jaw movement, means responsive to a first stage of squeezing movement of said hand grips to move said jaws to their gripping position and said knives to their penetrating position, means responsive to a second stage of squeezing movement of said hand grips beyond said first stage to move said knives axially away from said jaws to strip the insulative sheath from the wire, means responsive to a third stage of squeezing movement of said hand grips beyond said second stage to cause said jaws and knives to move to their retracted positions
  • said lastmentioned means comprising a hairpin-shaped spring disposed between said clamps, the knives being carried by the ends of said spring.
  • said means for moving the knives axially comprising a pair of lugs carried by the second arm and engageable with the bight of said spring.
  • clamps being made of resilient steel whereby they will flex to accommodate difi'erent diameters of wires.

Landscapes

  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US00215501A 1971-01-06 1972-01-05 Wire stripper Expired - Lifetime US3776069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7101042A FR2094900A5 (ja) 1971-01-06 1971-01-06

Publications (1)

Publication Number Publication Date
US3776069A true US3776069A (en) 1973-12-04

Family

ID=9070216

Family Applications (1)

Application Number Title Priority Date Filing Date
US00215501A Expired - Lifetime US3776069A (en) 1971-01-06 1972-01-05 Wire stripper

Country Status (6)

Country Link
US (1) US3776069A (ja)
JP (1) JPS5219311B1 (ja)
CA (1) CA976333A (ja)
DE (1) DE2200516C3 (ja)
FR (1) FR2094900A5 (ja)
GB (1) GB1334501A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366730A (en) * 1980-10-02 1983-01-04 Roberto Casadio Wire stripping pliers
US4639058A (en) * 1984-08-22 1987-01-27 Minnesota Mining & Manufacturing Co. Low profile test clip and handle therefor
US4660273A (en) * 1985-06-14 1987-04-28 Plas Plugs Limited Cable stripping device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1564199A (en) * 1975-11-11 1980-04-02 Weidmueller Kg C Tools for stripping sheating from cables and the like
FR2491690A3 (fr) * 1980-10-02 1982-04-09 Casadio Roberto Pince a denuder les fils ou cables electriques
US4625595A (en) * 1985-06-06 1986-12-02 Hsiao Hui W Structure for a wine stripper
GB2220606A (en) * 1988-07-13 1990-01-17 Neil Holdings Ltd James Hand tools
JPH073782Y2 (ja) * 1989-01-13 1995-01-30 靖夫 小原 電線の切断被覆剥ぎ器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601797A (en) * 1950-01-12 1952-07-01 Jr William J Holt Wire stripper
US3087363A (en) * 1960-11-07 1963-04-30 Industrial Nucleonics Corp Hand wire stripper
US3125908A (en) * 1961-05-13 1964-03-24 rozmus
GB1164184A (en) * 1967-06-03 1969-09-17 Zdzislaw Bieganski Tools for Stripping Covered Wire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601797A (en) * 1950-01-12 1952-07-01 Jr William J Holt Wire stripper
US3087363A (en) * 1960-11-07 1963-04-30 Industrial Nucleonics Corp Hand wire stripper
US3125908A (en) * 1961-05-13 1964-03-24 rozmus
GB1164184A (en) * 1967-06-03 1969-09-17 Zdzislaw Bieganski Tools for Stripping Covered Wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366730A (en) * 1980-10-02 1983-01-04 Roberto Casadio Wire stripping pliers
US4639058A (en) * 1984-08-22 1987-01-27 Minnesota Mining & Manufacturing Co. Low profile test clip and handle therefor
US4660273A (en) * 1985-06-14 1987-04-28 Plas Plugs Limited Cable stripping device

Also Published As

Publication number Publication date
JPS4714675A (ja) 1972-08-11
JPS5219311B1 (ja) 1977-05-27
FR2094900A5 (ja) 1972-02-04
DE2200516A1 (de) 1972-08-31
DE2200516C3 (de) 1975-03-13
DE2200516B2 (de) 1974-07-25
CA976333A (en) 1975-10-21
GB1334501A (en) 1973-10-17

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