US1643658A - Cord lock - Google Patents

Cord lock Download PDF

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Publication number
US1643658A
US1643658A US607287A US60728722A US1643658A US 1643658 A US1643658 A US 1643658A US 607287 A US607287 A US 607287A US 60728722 A US60728722 A US 60728722A US 1643658 A US1643658 A US 1643658A
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US
United States
Prior art keywords
cord
sleeve
lock
cord lock
wires
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
US607287A
Inventor
Foster F Hillix
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.)
White Sewing Machine Corp
Original Assignee
White Sewing Machine 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 White Sewing Machine Corp filed Critical White Sewing Machine Corp
Priority to US607287A priority Critical patent/US1643658A/en
Application granted granted Critical
Publication of US1643658A publication Critical patent/US1643658A/en
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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5808—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part formed by a metallic element crimped around the cable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/38—Strap cable or pipe button

Definitions

  • This invention relates to locks for ⁇ elec-l trical extension cords and has for its object to provide ay device vwhich will take 'the strain oil' the connection between the wires of the cord and the terminals to which they are connectedvso as -to prevent loosening or breaking of the electrical connections.
  • a further object is to provide avsimple locking device which c-an be readily slipped l0 upon the cord and fastened in place thereon by means of a simple hand tool so that the lock'can be convenientlyY applied in making connections between the wires 'of an exten- V sion cord and the conductorterminals ofv the device to which the cord is attached.
  • the'invention may be -said to ⁇ comprise the devices shown in the accompanying drawings and hereinafter described and particularly claimed,- together with such modliications thereof as will be obvious to those skilled in the art to which the invention relates.
  • Fig. 1 is a. side elevation partially in section Showing the cord lock applied to the connection between a cord and the connection plug;
  • Fig-2 1 s a sectional view showing the locking member lbefore it is compressed. into locking engagement with the cord
  • Fig., 3 is a sectional view showing the locking member after it has been ⁇ compressed upon the cord;
  • Figs; 4 and y5 are side elevation and a. transverse section respectively showin the device applied vto av double cord.
  • Fig. 6 is a detail view of the metal collar and the enclosed sleeve.
  • the extension cord 1 comprises inner insulated wires 2 and an outer cover or casing 3' of fabric or other suitable material.
  • the locking device consists of an outer'sheet metal sleeve 4 which has a small end 5 of a size to fit slidably upon the cord and an enlarged end 6 within which fits a sleeve 7 of compressible and flexible insulating material such as rubber, the internal diameter vof which.- is substantially the same as lthe internal'diameter of jthe small portion 5 of the outer sleeve. As shown in Fig.
  • the sheet metal sleeve 4 withthe-rubber sleeve 7 fitting inthe enlarged end'thereof can be readily slipped upon the end of the extension cord.
  • a suitable tool a partv of the enlarged portion 6 of the sheet ⁇ metal sleeve is crimped inwardly against .the rubber sleeve 7 compressing the sleeve 7 against the cord 1 and firmly locking the device in place upon the cord.
  • the outer edge of the rubber sl'eeve 7 projects beyond the edge of the enlarged portion 6 of the outer sleeve and when the outer sleeve is crimped inwardly compressing the sleeve 7 against the cord, the outer edge 8 of the sleeve 7 projects outwardly and overlies the edge of the sleeve 4 serving to insulate and protect the metal sleeve 4 against electrical contact with theterminals of the connection to which the cord may be attached.
  • the present invention is applicable to connections betweenan extension cord and conductor terminals of any xture or connectingv member.
  • Fig. 1 the cord lock is shown applied to the connection between an y tween the cord 1 andthe plug.' The cordV ⁇ lock is applied tothe cord 1 close to the endwhich is attached to the plug-so that the i enlarged portion 6 thereof lies within the cover 11 and bears against the inturned flange 13 of the c0ver ⁇ 11. Any pull or strain 1 i upon the'cord 1 is thus imposed upon the flange 13 of the cover 1l b reason of the engagement of the enlarged portion 6 of the lock therewith and the connections between the wires 2 and. the terminals 10 are entirely relieved of such strains so that there is n0 tendency for the connection between the cord and terminals to work loose or become broken.
  • the outer metallic sleeve 16 is oval in shape, and 'has a small end 17 adapted to lit closely over the wires 15 and an enlarged end 18 Within which vfits an oval rubber sleeve 19, the sleeves 16 ⁇ and 19 being otherwise exactly the same as the sleeves 4 and 7 previo ously described.

Description

Patented Sept. 27, 1 927.A
' UNITEDA srAfrE-'sA V'PATlsatVr OFFICE.
FOSTER F. HILLIX,'OF CLEVELANP, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO WHITE SEWING MACHINE CORPORATION, CLEVELAND, OHIO, A CORPORATION F DELAWARE.
conn Loox.
'Application meld December 16,1922. Serial No. 607,287.
This invention relates to locks for `elec-l trical extension cords and has for its object to provide ay device vwhich will take 'the strain oil' the connection between the wires of the cord and the terminals to which they are connectedvso as -to prevent loosening or breaking of the electrical connections.
A further object is to provide avsimple locking device which c-an be readily slipped l0 upon the cord and fastened in place thereon by means of a simple hand tool so that the lock'can be convenientlyY applied in making connections between the wires 'of an exten- V sion cord and the conductorterminals ofv the device to which the cord is attached.
With the above and other objects in view', the'invention may be -said to` comprise the devices shown in the accompanying drawings and hereinafter described and particularly claimed,- together with such modliications thereof as will be obvious to those skilled in the art to which the invention relates.
Reference should be had to the accom- 25.panying drawing forming a part of this specification in which Fig. 1 is a. side elevation partially in section Showing the cord lock applied to the connection between a cord and the connection plug; Fig-2 1s a sectional view showing the locking member lbefore it is compressed. into locking engagement with the cord Fig., 3 is a sectional view showing the locking member after it has been` compressed upon the cord; Figs; 4 and y5 are side elevation and a. transverse section respectively showin the device applied vto av double cord. Fig. 6 is a detail view of the metal collar and the enclosed sleeve. v -f Referring to the annexed drawing, the extension cord 1 comprises inner insulated wires 2 and an outer cover or casing 3' of fabric or other suitable material. The locking device consists of an outer'sheet metal sleeve 4 which has a small end 5 of a size to fit slidably upon the cord and an enlarged end 6 within which fits a sleeve 7 of compressible and flexible insulating material such as rubber, the internal diameter vof which.- is substantially the same as lthe internal'diameter of jthe small portion 5 of the outer sleeve. As shown in Fig. 2 the sheet metal sleeve 4 withthe-rubber sleeve 7 fitting inthe enlarged end'thereof can be readily slipped upon the end of the extension cord. By means of a suitable tool a partv of the enlarged portion 6 of the sheet `metal sleeve is crimped inwardly against .the rubber sleeve 7 compressing the sleeve 7 against the cord 1 and firmly locking the device in place upon the cord. The outer edge of the rubber sl'eeve 7 projects beyond the edge of the enlarged portion 6 of the outer sleeve and when the outer sleeve is crimped inwardly compressing the sleeve 7 against the cord, the outer edge 8 of the sleeve 7 projects outwardly and overlies the edge of the sleeve 4 serving to insulate and protect the metal sleeve 4 against electrical contact with theterminals of the connection to which the cord may be attached.
The present invention is applicable to connections betweenan extension cord and conductor terminals of any xture or connectingv member. In Fig. 1 the cord lock is shown applied to the connection between an y tween the cord 1 andthe plug.' The cordV `lock is applied tothe cord 1 close to the endwhich is attached to the plug-so that the i enlarged portion 6 thereof lies within the cover 11 and bears against the inturned flange 13 of the c0ver `11. Any pull or strain 1 i upon the'cord 1 is thus imposed upon the flange 13 of the cover 1l b reason of the engagement of the enlarged portion 6 of the lock therewith and the connections between the wires 2 and. the terminals 10 are entirely relieved of such strains so that there is n0 tendency for the connection between the cord and terminals to work loose or become broken.
Referring to Figs. 4and 5 in which the cord lock is shown applied to a double cord consisting of a, pair of insulated wires 15,v the outer metallic sleeve 16 is oval in shape, and 'has a small end 17 adapted to lit closely over the wires 15 and an enlarged end 18 Within which vfits an oval rubber sleeve 19, the sleeves 16 `and 19 being otherwise exactly the same as the sleeves 4 and 7 previo ously described.
- Having described my invention, I claim- The combination with a cord of insulating material having conductors therein, of a rigid collar clamped upon the cord com- 10 prislng an inner sleeve of compressible -in- FOSTER F. HILLIX.
US607287A 1922-12-16 1922-12-16 Cord lock Expired - Lifetime US1643658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US607287A US1643658A (en) 1922-12-16 1922-12-16 Cord lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US607287A US1643658A (en) 1922-12-16 1922-12-16 Cord lock

Publications (1)

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US1643658A true US1643658A (en) 1927-09-27

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Application Number Title Priority Date Filing Date
US607287A Expired - Lifetime US1643658A (en) 1922-12-16 1922-12-16 Cord lock

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861811A (en) * 1971-06-21 1975-01-21 British Ropes Ltd Ferrules on rope or strand
EP0027696A1 (en) * 1979-10-19 1981-04-29 AMP INCORPORATED (a New Jersey corporation) Method of terminating shielded electrical cable and an assembly comprising an electrical connector terminating such cable
EP0080295A1 (en) * 1981-11-20 1983-06-01 AMP INCORPORATED (a New Jersey corporation) Shielded ribbon coax cable assembly
EP0920085A1 (en) * 1997-11-29 1999-06-02 Alcatel Element with one-sided electrical connector and manufacturing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861811A (en) * 1971-06-21 1975-01-21 British Ropes Ltd Ferrules on rope or strand
EP0027696A1 (en) * 1979-10-19 1981-04-29 AMP INCORPORATED (a New Jersey corporation) Method of terminating shielded electrical cable and an assembly comprising an electrical connector terminating such cable
EP0080295A1 (en) * 1981-11-20 1983-06-01 AMP INCORPORATED (a New Jersey corporation) Shielded ribbon coax cable assembly
EP0920085A1 (en) * 1997-11-29 1999-06-02 Alcatel Element with one-sided electrical connector and manufacturing method

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