US3279058A - Electrical cable insulation slitting tool - Google Patents

Electrical cable insulation slitting tool Download PDF

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Publication number
US3279058A
US3279058A US448085A US44808565A US3279058A US 3279058 A US3279058 A US 3279058A US 448085 A US448085 A US 448085A US 44808565 A US44808565 A US 44808565A US 3279058 A US3279058 A US 3279058A
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US
United States
Prior art keywords
cable
channel
longitudinal
insulation
axis
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
US448085A
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English (en)
Inventor
Charles E Dibble
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.)
FCI USA LLC
Original Assignee
Burndy 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 Burndy Corp filed Critical Burndy Corp
Priority to US448085A priority Critical patent/US3279058A/en
Priority to JP1771466A priority patent/JPS4315938B1/ja
Priority to GB15587/66A priority patent/GB1086345A/en
Priority to BE679361D priority patent/BE679361A/xx
Application granted granted Critical
Publication of US3279058A publication Critical patent/US3279058A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H02G1/1295—Devices for splitting and dismantling flat cables

Definitions

  • Toughness and cut resistant qualities substantially increase the efiort required to manually penetrate, cut away and remove this insulation in order to bare the underlying cable conductors.
  • a further object is to provide a cutting tool which simply and effectively maintains a cutting blade in proper engagement with the insulation of an electric cable during cutting of the insulation.
  • a still further object is to provide a tool wherein the cutting blade may be securely mounted to a relatively rigid structural part of the tool but may nevertheless be readily removed for repair or replacement.
  • a housing member having a cable receiving channel therethrough which includes a movable wall portion adapted to force an inserted cable into cutting engagement with a cutting blade and to thereafter maintain the cable in cutting relationship with the cutting blade as the housing is moved axially along the cable.
  • FIG. 1 represents a pictorial view of an embodiment of this invention having a movable wall portion in a cable receiving channel;
  • FIG. 2 is a front elevation View of the embodiment shown in FIG. 1;
  • FIG. 3 is a bottom plan view of the same embodiment
  • FIG. 4 is a side section view of the cutting tool of FIG.
  • FIG. 5 is a side section view showing the cable and tool parts in final cutting position
  • FIG. 6 is a transverse section view through a cable such as might be used in connection with this invention.
  • FIG. 7 is a pictorial representation of a disassembled mounting block such as might be used to support a cutting blade in a tool constructed in accordance with this invention.
  • the cutting tool illustrated in FIGS. 1 through 5 may be seen to comprise a housing member designated generally by reference numeral 10, which includes a pair of upright opposed side walls 12, 14 coupled together in generally U-shaped configuration by a connecting wall element 16. Movable wall element 18 and insert element 20 extend between the side wall 12, 14, in opposed spaced-apart relationship to define, in cooperation with the side walls, a longitudinal channel 22 extending through the housing 10.
  • One or more cutting blades 24 are coupled to the housing 10 by means of insert 20 so as to project into the longitudinal channel 22 in position for penetrating the insulation of a cable telescopically disposed within the channel.
  • Gripping handles such as 26 are provided on the housing 10 to facilitate drawing the blade or blades 24 longitudinally along and through the insulation of a cable constrained in channel 22.
  • FIGS. 4 and 5 The operation of this invention is best illustrated by FIGS. 4 and 5, wherein it may be seen that in the first, or retracted, position of wall member 18, a cable 30 may be inserted into the housing 10 at an angle to the axis of longitudinal channel 22 so as to substantially clear cutting blade 24. Subsequent to insertion of the cable, wall member 18 may be moved to a second, extended position, as shown in FIG. 5, wherein the cable 30 is forced into a position substantially parallel to the axis of channel 22 so that cutting blade 24 necessarily penetrates the cable insulation to a predetermined depth; this penetrated position will be maintained so long as wall member 18 remains in the location shown. The cable 30 is then free to move in the longitudinal direction only, as indicated by arrow B in FIG. 5, so that the sharpened cutting edge 27 of blade 24 will move axially along and through the cable insulation until a slit of the desired length has been formed.
  • the dimensions of blade 24 may be selected to correspond to a particular cable and particular channel dimension so as to form a slit in the insulation extending from the outer surface thereof through to the surface of the encased conductor.
  • FIG. 6 illustrates a transverse cross section of a heavy duty cable 30 which might be used in connection with this invention.
  • the cable is seen to include a pair of round wire conductors 31, 33 and a central flat conductor 32 which are together encased in a common insulating jacket 34.
  • Three parallel longitudinalslits 3'5, 36 and 37 have been formed in the jacket in the cable, extending from the outer surface of jacket 34 to the surf-ace of the conductors, in the manner described above.
  • Dotted lines 35, 36 and 37' illustrate the-position of corresponding opposite slits which might be formed by use of the rotation and reinsertion process also described above.
  • Movable wall portion 18 is slidably coupled to the housing 10 by means of a stud fastener 28 which extends 3 through longitudinal slot 29 in wall portion 16. The slot and stud capture portion 18 to portion 16 while permitting longitudinal relative motion therebetween. Movable portion 18 is thus freely movable between a forward position, as shown in FIG. 4, in which cable 30 may be inserted through the housing 10 at an angle to the axis of channel 22, and a rearward position, as shown in FIG. 5, in which the cable 30 is constrained to telescopic movement substantially parallel to the axis of channel 22.
  • wall member 18 will ordinarily be drawn from the forward position shown in FIG. 4 to the rearward position of FIG. 5 merely in response to movement of cable 30 in the rearward direction (direction of arrow B) relative to housing 10.
  • the rearward movement of wall portion 18 will force cable 30 to tilt about the edge of the wall portion into alignment with the channel axis (as shown by the direction of arrow A in FIG. 4), gradually forcing penetration of the blade 24 into the cable and ultimately holding the cable in its final, penetrated position ready for slitting.
  • the side walls 12 and 14 may be made to extend rearwardly so as to define, in effect, a longitudinal opening 17 which extends through the wall 16 of the housing 10 and through the rearward end of the housing.
  • the longitudinal opening 17 permits the desired insertion of the cable 30 at an angle to the axis of the channel 22.
  • the rearward posi tion of slidable Wall portion 18 may thus be considered to cover over or to obstruct the longitudinal opening 17.
  • FIG. 7 illustrate an alternative means of supporting a cutting blade in a hand tool constructed in accordance with this invention.
  • a pair of structural elements 50 and 52 are fitted with a cutout seat such as 54 on the interface of one or both of the elements which is adapted to receive and clamp a cutting blade such as the blade 56 between them.
  • the blade 56 may be provided with tab portions such as 58 adapted to mate with corresponding portions of the cutout 54 to assure multidirectional tension of the blade within the cutout.
  • a pair of transversely extending key portions 40 project from the sides of element 20 in position to mate with corresponding longitudinal keyways 42 formed in side walls 12 and 14.
  • a pair of tabs or stop members 44 obstruct the rearward end of keyways 44 to limit the rearward movement of insert element 20. Rearward relative movement of an inserted cable 30 will thus serve to draw the blade or blades 24, and attached insert 20, more firmly against stop members 44.
  • Insert element 20 has further been shown to include a 5 pair of downwardly depending leg portions 46 which lie parallel to the opposed side walls 12 and 14. These leg portions serve to effectively delimit the dimensions of enclosed channel 22. It is apparent that various differently dimensioned insert members 20 may be used in conjunction with a given housing member 10 in order to accommodate a fairly wide range of different cable sizes. Insert 20 may, of course, be used without any depending leg portions in order to accommodate a cable of maximum width; maximum width in such case is determined by the spacing between the opposed side walls 12 and 14. Similarly, the housing member 10 may be formed within an integral top wall (not shown) in place of insert element 20, and the cutting blade or blades 24 may, in turn, be mounted to such an integral top wall. Still further, an integral top wall may be used in conjunction with an insert element such as 20. v
  • a hand tool for longitudinally slitting the insulating jacket surrounding the electrical conductor in a heavy duty electrical cable comprising:
  • a housing member having an interior surface defining a longitudinal channel of given cross sectional shape, said channel extending through said housing member between a rearward and a forward end;
  • a housing sub-portion slidably coupled to said housing for longitudinal movement between a forward position wherein a cable may be inserted into said channel at an angle to the longitudinal axis thereof, and a second position wherein a cable within said channel is constrained to telescopic motion substantially parallel to theaxis thereof;
  • an insulation cutting blade coupled to said housing member and projecting into said longitudinal channel, said cutting blade being located within said channel in position to clear a cable inserted into said channel at an angle to the axis thereof, and to penetrate into the insulation of such a cable as the axis of the cable is tilted into a position substantially parallel to the axis of the said longitudinal channel,
  • the hand tool of claim 1 further including insert means adapted to be substantially telescopically inserted into said longitudinal channel todelimit the cross section thereof; and retainer means for preventing over insertion of said insert means into said channel.

Landscapes

  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
US448085A 1965-04-14 1965-04-14 Electrical cable insulation slitting tool Expired - Lifetime US3279058A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US448085A US3279058A (en) 1965-04-14 1965-04-14 Electrical cable insulation slitting tool
JP1771466A JPS4315938B1 (en, 2012) 1965-04-14 1966-03-24
GB15587/66A GB1086345A (en) 1965-04-14 1966-04-07 Insulation cutter
BE679361D BE679361A (en, 2012) 1965-04-14 1966-04-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448085A US3279058A (en) 1965-04-14 1965-04-14 Electrical cable insulation slitting tool

Publications (1)

Publication Number Publication Date
US3279058A true US3279058A (en) 1966-10-18

Family

ID=23778945

Family Applications (1)

Application Number Title Priority Date Filing Date
US448085A Expired - Lifetime US3279058A (en) 1965-04-14 1965-04-14 Electrical cable insulation slitting tool

Country Status (4)

Country Link
US (1) US3279058A (en, 2012)
JP (1) JPS4315938B1 (en, 2012)
BE (1) BE679361A (en, 2012)
GB (1) GB1086345A (en, 2012)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024828A3 (en) * 1979-08-30 1981-03-25 Amp Incorporated A slitting tool for separating the conductors of a multi-conductor flat, flexible, insulated cable
US4265016A (en) * 1978-05-24 1981-05-05 Ducret Lucien C Cable splitter
US4380256A (en) * 1980-12-30 1983-04-19 Thomas & Betts Corporation Cable slitting and spreading tool
US4387746A (en) * 1980-03-14 1983-06-14 Slater Electric Inc. Wire separation tool and method of preparing multiconductor cable
US4492026A (en) * 1982-03-15 1985-01-08 C. A. Weidmuller Gmbh & Co. Conductor separator
US4797988A (en) * 1986-03-27 1989-01-17 Slater Electric, Inc. Method and tool for preparing multi-conductor cable
CN107508199A (zh) * 2017-08-04 2017-12-22 国网甘肃省电力公司经济技术研究院 一种电力电缆铺设施工过程中接盒用支撑架

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102445368B1 (ko) 2017-12-14 2022-09-20 현대자동차주식회사 안테나 장치 및 차량

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347956A (en) * 1943-02-06 1944-05-02 Earl P Lansing Cable sheath cutting and stripping tool
US2686362A (en) * 1951-09-17 1954-08-17 Edgar S Dancey Cable cutting tool
US2735175A (en) * 1956-02-21 Aluminum cable cutter
US2871739A (en) * 1955-06-07 1959-02-03 Carl A Granzow Cable stripping tool
US2903064A (en) * 1956-04-18 1959-09-08 Isaac S Blonder Cable insulation cutter with cutter movable about the periphery of the cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735175A (en) * 1956-02-21 Aluminum cable cutter
US2347956A (en) * 1943-02-06 1944-05-02 Earl P Lansing Cable sheath cutting and stripping tool
US2686362A (en) * 1951-09-17 1954-08-17 Edgar S Dancey Cable cutting tool
US2871739A (en) * 1955-06-07 1959-02-03 Carl A Granzow Cable stripping tool
US2903064A (en) * 1956-04-18 1959-09-08 Isaac S Blonder Cable insulation cutter with cutter movable about the periphery of the cable

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265016A (en) * 1978-05-24 1981-05-05 Ducret Lucien C Cable splitter
EP0024828A3 (en) * 1979-08-30 1981-03-25 Amp Incorporated A slitting tool for separating the conductors of a multi-conductor flat, flexible, insulated cable
US4387746A (en) * 1980-03-14 1983-06-14 Slater Electric Inc. Wire separation tool and method of preparing multiconductor cable
US4380256A (en) * 1980-12-30 1983-04-19 Thomas & Betts Corporation Cable slitting and spreading tool
US4492026A (en) * 1982-03-15 1985-01-08 C. A. Weidmuller Gmbh & Co. Conductor separator
US4797988A (en) * 1986-03-27 1989-01-17 Slater Electric, Inc. Method and tool for preparing multi-conductor cable
CN107508199A (zh) * 2017-08-04 2017-12-22 国网甘肃省电力公司经济技术研究院 一种电力电缆铺设施工过程中接盒用支撑架
CN107508199B (zh) * 2017-08-04 2024-06-04 国网甘肃省电力公司经济技术研究院 一种电力电缆铺设施工过程中接盒用支撑架

Also Published As

Publication number Publication date
JPS4315938B1 (en, 2012) 1968-07-04
BE679361A (en, 2012) 1966-10-12
GB1086345A (en) 1967-10-11

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