[go: up one dir, main page]

US2412948A - Detachable terminal fitting for stranded-wire structure - Google Patents

Detachable terminal fitting for stranded-wire structure Download PDF

Info

Publication number
US2412948A
US2412948A US474416A US47441643A US2412948A US 2412948 A US2412948 A US 2412948A US 474416 A US474416 A US 474416A US 47441643 A US47441643 A US 47441643A US 2412948 A US2412948 A US 2412948A
Authority
US
United States
Prior art keywords
fitting
stranded
wire structure
terminal fitting
wire
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
US474416A
Inventor
Alan E Brickman
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.)
American Steel and Wire Company of New Jersey
Original Assignee
American Steel and Wire Company of New Jersey
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 American Steel and Wire Company of New Jersey filed Critical American Steel and Wire Company of New Jersey
Priority to US474416A priority Critical patent/US2412948A/en
Application granted granted Critical
Publication of US2412948A publication Critical patent/US2412948A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/308—Conductive members located parallel to axis of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/56—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation one conductor screwing into another
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer

Definitions

  • This invention relates to a detachable terminal fitting, and inparticular to such fittings used on stranded wire structures.
  • All terminals are fixed to the end of the stranded wire structure so as to become a unitary part of the assembly. If the terminal becomes worn or damaged, the whole assembly must be replaced. All aperturesthrough which the cable passes must be equal to or greater thanthe largest cross-section of the attached terminal. These large apertures weaken the structure and/or permit undesir a b1e infiltration of moisture, gases or foreign materials and are especially detrimental when used on aeroplanes. In the present fixed terminals there is no im- Imediate provision for changing the overall length oi the cable assembly.
  • the present used cable connector with fixed terminals must, theretore, include a turnbuckle or a stud fitting with nut vtakeup on at least one end to compensate for the changes in cable assembly length.
  • Another Object is to furnish a terminal fitting which may be readily removed or replaced.
  • a iurther object is to furnish a terminal fitting having provisions for changing the overall length of the cable assembly.
  • Fig. 1 is a view or a stranded wire structure used in the invention
  • Fig. 2 is a view or such a wire structure after its end has been broomed
  • Fig. 3 is a view, partly in cross-section, showing a fitting attached to the stranded wire structhe terminal fitting of the Fig. shows the fitting of Fig. 8 swaged on the wire rope;
  • Fig. 11 is a view similar to Fig. 10, but showing the fitting with the threads formed thereon
  • Fig. 12 is a view showing an assembly of the second embodiment of the invention.
  • reference numeral 2 indicates a stranded wire structure'to which a fitting'is to be attached.
  • the wire structure is broomed toobtain a bulb 4 a short distance from the end thereof and an enlarged broomed section 6 at the end thereof as shown in Fig. 2.
  • the end or the wire structure is then inserted into the cavity of a die and molten metal is injected into the" cavity of the A detachable terminal fitting it having a bore it formed therein is produced by the injection method of die casting.
  • a Dardelet thread i8 is cast therein and a thread tap is run over the cast thread to clean and finish the working surfaces.
  • a set screw 20 is then screwed into the bottom of the bore l6. By adjusting this screw the bottoming point may be changed as desired.
  • the operation of the Dardelet thread will be apparent from an inspection of Figs. 6- and '7.
  • the root portion 22 of the male thread isv tapered so asto cause an incline in the direction of the end and there is a corresponding taper 24 on the crest portion of the female thread.
  • the two members may be readily screwed together until they meet with resistance, which in this instance takes place when the fitting 8 abuts the plug 20.
  • the crest taper produces a great compressive force on the root taper oi! the cable member, which, in turn, will transmit the compression-tomes onto the stranded wire structure to increase the grip on the stranded structure to better withstand the tension which will be applied to the assembly.
  • FIG. 7 shows the position of the thread when additional torque is applied.
  • the plug 20 may be adjusted inwardly or outwardly by means of a set screw wrench 26.
  • a second embodiment of the invention is disclosed in Figs. 8 to 12.
  • a tubular nickel steel seamless ferrule 21 provided with a bore 28 having a diameter comparative to the outside diameter of the wire structure is slid over the wire. The ferrule is then swaged over the greater part of its length'so as to cause fiow of metal into the external inter.
  • tures comprisinga thinwalled compressible fitting surrounding and in intimate surface contact with said stranded wire structure and having; a Dardelet thread formed on the external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof and threaded on said firstnamed fitting, said complemental threads being tightened to compress the compressible fitting whereby the gripping force on the wire structures is increased.
  • a terminal fitting for stranded wire structures comprising a thin walled compressible fitting surrounding and in intimate surface contact with said stranded wire structure and having a Dardelet thread formed on the external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof and threaded on saidfirst-named fitting, said complemental threads being tightened to compress the compressible fitting wherebythe gripping force on the wire structures is increased, said hollow fitting having an adjustable bottom therein to provide changes in the assembled length of the terminal fitting.
  • a terminal fitting for stranded wirestructures comprising a thin walled compressible male fitting cast about said stranded wire structure
  • a terminal fitting for strandedwlre struc-- tures comprising a thin walled compressible male fitting'ca'st about ,said stranded wire structure, and having a Dardelet thread formedon the ex-' ternal surface thereof, and a hollow fitting having a complemental Dardelet thread formed on" tures is increased, said hollow fitting having an adjustable bottom therein to provide changes in the'a'ssembled length of the terminal fittingi 5.
  • A- terminal fitting for stranded wire 'struc-- tures comprising a thin walled compressible irial'e fitting swaged to and surrounding the wire structureand having a Dardelet thread formed-on mo external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof andthreaded on said first-named fitting, said complemental threads being tightened to compress the compressibl ej'fitting whereby the gripping force on the wire" struc-' tures is increased.
  • a terminal fitting for strandedwire structures comprising a thin walled compressible'male fitting swaged to and surrounding the wire structure and having a Dardelet thread formed on the external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof, and threaded on said first-named fitting, said complemental threads being tightened to compress the compressible fitting whereby the gripping force on the wire structures is increased, said hollow fitting having an adjustable bottom therein to, provide changes in the assembled length of the terminal fitting,

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Description

Dec. 24, 1946. A. E. BRICKMAN 2,412,948
DETACHABLE TERMINAL FITTING FOR STRANDEDWIRE STRUCTURE Filed Feb. 2, 1943 2 Sheets-Sheet 1 Dec. 24, 1946. A. E. BRICKMAN 2,412,948
DETACHABLE TERMINAL FITTING FOR STRANDED-WIRE STRUCTURE Filed Feb. 2, 1943 2 Sheets-Sheet 2 FIE- FIE-9 rim a INVENTOR.
ture;
- Patented Dec. 24, 1946 UNITED STATES PATENT orrics DETACHABLE TERDHNAL FITTING FOR STRANDED-WIRE STRUCTURE Alan E. Brickman, New Haven, Conn., assignor to The American Steel and Wire Company of New Jersey, a corporation of New Jersey Application Fejruary 2, 1943, Serial No. 474,416
I 6 Claims. (Cl. 24-12215) This invention relates to a detachable terminal fitting, and inparticular to such fittings used on stranded wire structures. At present all terminals are fixed to the end of the stranded wire structure so as to become a unitary part of the assembly. If the terminal becomes worn or damaged, the whole assembly must be replaced. All aperturesthrough which the cable passes must be equal to or greater thanthe largest cross-section of the attached terminal. These large apertures weaken the structure and/or permit undesir a b1e infiltration of moisture, gases or foreign materials and are especially detrimental when used on aeroplanes. In the present fixed terminals there is no im- Imediate provision for changing the overall length oi the cable assembly. Such change is often necessary due to lengthening resulting from structural stretch of the cable or from wear, which is particularly noticeable in cable connections involving marked changes in course of direction, as accomplished with sheaves. The present used cable connector with fixed terminals must, theretore, include a turnbuckle or a stud fitting with nut vtakeup on at least one end to compensate for the changes in cable assembly length.
It is an object of this invention to furnish a detachable terminal fitting which permits greater flexibility oi. terminal design.
Another Object is to furnish a terminal fitting which may be readily removed or replaced.
A iurther object is to furnish a terminal fitting having provisions for changing the overall length of the cable assembly.
These and other objects will be more apparent alter referring to the attached drawings in which: Fig. 1 is a view or a stranded wire structure used in the invention; 1
Fig. 2 is a view or such a wire structure after its end has been broomed;
Fig. 3 is a view, partly in cross-section, showing a fitting attached to the stranded wire structhe terminal fitting of the Fig. shows the fitting of Fig. 8 swaged on the wire rope;
Fig. 11 is a view similar to Fig. 10, but showing the fitting with the threads formed thereon, and Fig. 12 is a view showing an assembly of the second embodiment of the invention.
Referring more particularly to the drawings, reference numeral 2 indicates a stranded wire structure'to which a fitting'is to be attached. The wire structure is broomed toobtain a bulb 4 a short distance from the end thereof and an enlarged broomed section 6 at the end thereof as shown in Fig. 2. The end or the wire structure is then inserted into the cavity of a die and molten metal is injected into the" cavity of the A detachable terminal fitting it having a bore it formed therein is produced by the injection method of die casting. A Dardelet thread i8 is cast therein and a thread tap is run over the cast thread to clean and finish the working surfaces. A set screw 20 is then screwed into the bottom of the bore l6. By adjusting this screw the bottoming point may be changed as desired.
The operation of the Dardelet thread. will be apparent from an inspection of Figs. 6- and '7. The root portion 22 of the male thread isv tapered so asto cause an incline in the direction of the end and there is a corresponding taper 24 on the crest portion of the female thread. The two members may be readily screwed together until they meet with resistance, which in this instance takes place when the fitting 8 abuts the plug 20. With the additional torque, the crest taper produces a great compressive force on the root taper oi! the cable member, which, in turn, will transmit the compression-tomes onto the stranded wire structure to increase the grip on the stranded structure to better withstand the tension which will be applied to the assembly. Fig. 7 shows the position of the thread when additional torque is applied. To provide changes in the overall assembly length, the plug 20 may be adjusted inwardly or outwardly by means of a set screw wrench 26. A second embodiment of the invention is disclosed in Figs. 8 to 12. In this embodiment a tubular nickel steel seamless ferrule 21 provided with a bore 28 having a diameter comparative to the outside diameter of the wire structure is slid over the wire. The ferrule is then swaged over the greater part of its length'so as to cause fiow of metal into the external inter.-
5d stlces and in fist grip with the stranded wire structure as shown in Fig. 10. The finished wall section on the ferrule in this construction may be extremely thin, as it becomes augmented with the values produced by the detachable terminal H as described. above. The unswaged' length 29' structure. This method of evading a line of restraint to cable vibration is not as effective as the method disclosed above. After the ferrule 21- is swa'ged onto the wire, a Dardelet thread 30:
tures comprisinga thinwalled compressible fitting surrounding and in intimate surface contact with said stranded wire structure and having; a Dardelet thread formed on the external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof and threaded on said firstnamed fitting, said complemental threads being tightened to compress the compressible fitting whereby the gripping force on the wire structures is increased.
2. A terminal fitting for stranded wire structures comprising a thin walled compressible fitting surrounding and in intimate surface contact with said stranded wire structure and having a Dardelet thread formed on the external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof and threaded on saidfirst-named fitting, said complemental threads being tightened to compress the compressible fitting wherebythe gripping force on the wire structures is increased, said hollow fitting having an adjustable bottom therein to provide changes in the assembled length of the terminal fitting.
3. A terminal fitting for stranded wirestructures comprising a thin walled compressible male fitting cast about said stranded wire structure,
and having a Dardelet thread formed on the externalsurface thereof, and a hollow fitting having a complemental Dardelet thread formed. on
the internal surface thereof and threadedon said first-named fitting; said complemental threads being tightened to compressthe compressible fitting whereby the gripping force on the'wire structures is increased.
4. A terminal fitting for strandedwlre struc-- tures comprising a thin walled compressible male fitting'ca'st about ,said stranded wire structure, and having a Dardelet thread formedon the ex-' ternal surface thereof, and a hollow fitting having a complemental Dardelet thread formed on" tures is increased, said hollow fitting having an adjustable bottom therein to provide changes in the'a'ssembled length of the terminal fittingi 5. A- terminal fitting for stranded wire 'struc-- turescomprising a thin walled compressible irial'e fitting swaged to and surrounding the wire structureand having a Dardelet thread formed-on mo external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof andthreaded on said first-named fitting, said complemental threads being tightened to compress the compressibl ej'fitting whereby the gripping force on the wire" struc-' tures is increased.
6. A terminal fitting for strandedwire structures comprising a thin walled compressible'male fitting swaged to and surrounding the wire structure and having a Dardelet thread formed on the external surface thereof, and a hollow fitting having a complemental Dardelet thread formed on the internal surface thereof, and threaded on said first-named fitting, said complemental threads being tightened to compress the compressible fitting whereby the gripping force on the wire structures is increased, said hollow fitting having an adjustable bottom therein to, provide changes in the assembled length of the terminal fitting,
ALAN E. BRICKMAN.
US474416A 1943-02-02 1943-02-02 Detachable terminal fitting for stranded-wire structure Expired - Lifetime US2412948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US474416A US2412948A (en) 1943-02-02 1943-02-02 Detachable terminal fitting for stranded-wire structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US474416A US2412948A (en) 1943-02-02 1943-02-02 Detachable terminal fitting for stranded-wire structure

Publications (1)

Publication Number Publication Date
US2412948A true US2412948A (en) 1946-12-24

Family

ID=23883432

Family Applications (1)

Application Number Title Priority Date Filing Date
US474416A Expired - Lifetime US2412948A (en) 1943-02-02 1943-02-02 Detachable terminal fitting for stranded-wire structure

Country Status (1)

Country Link
US (1) US2412948A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2158035A1 (en) * 1971-10-28 1973-06-08 Essex International Inc
EP0228165A3 (en) * 1985-12-20 1987-11-25 Meito Denki Koji Kk Connecting apparatus for connecting lines
US20120034025A1 (en) * 2010-08-07 2012-02-09 Gulf Copper Cable Connection Systems and Methods
US20150014884A1 (en) * 2009-10-02 2015-01-15 Böllhoff Verbindungstechnik GmbH Moldable wire thread insert, method for its production, component with a moldable wire thread insert as well as a method for its production
CN110998138A (en) * 2017-08-16 2020-04-10 法尔福控股合资有限公司 A system consisting of statically loadable components in a structure
WO2020076754A1 (en) * 2018-10-10 2020-04-16 Afl Telecommunications Llc Modular conductor connector assemblies and connecting methods

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2158035A1 (en) * 1971-10-28 1973-06-08 Essex International Inc
EP0228165A3 (en) * 1985-12-20 1987-11-25 Meito Denki Koji Kk Connecting apparatus for connecting lines
US20150014884A1 (en) * 2009-10-02 2015-01-15 Böllhoff Verbindungstechnik GmbH Moldable wire thread insert, method for its production, component with a moldable wire thread insert as well as a method for its production
US9676128B2 (en) * 2009-10-02 2017-06-13 Bollhoff Verbindungstechnik Gmbh Moldable wire thread insert, method for its production, component with a moldable wire thread insert as well as a method for its production
US20120034025A1 (en) * 2010-08-07 2012-02-09 Gulf Copper Cable Connection Systems and Methods
US8961061B2 (en) * 2010-08-07 2015-02-24 Gulf Copper Cable connection systems and methods
CN110998138A (en) * 2017-08-16 2020-04-10 法尔福控股合资有限公司 A system consisting of statically loadable components in a structure
US11415195B2 (en) * 2017-08-16 2022-08-16 Pfeifer Holding Gmbh & Co. Kg System consisting of statically loadable components in a structure
WO2020076754A1 (en) * 2018-10-10 2020-04-16 Afl Telecommunications Llc Modular conductor connector assemblies and connecting methods
CN112840511A (en) * 2018-10-10 2021-05-25 Afl电信有限责任公司 Modular conductor connector assembly and connection method

Similar Documents

Publication Publication Date Title
US3075166A (en) Hot line clamp
US2327683A (en) Wire holding device
US1643150A (en) Attachment for wire strand and process for producing the same
US2412948A (en) Detachable terminal fitting for stranded-wire structure
US2056248A (en) Wire conecter
US2722259A (en) Insert nut with ball shaped plate engaging extension
US1910269A (en) Compression joint and method of making the same
EP2962370B1 (en) Spark plug
CN106594179A (en) Self-locking type steel wire rope jointing method
US1751572A (en) Electrical connecter
US4002359A (en) Tool joint for drill pipes
DE60107712T2 (en) ABREISSBEFESTIGUNGSELEMENT
US3266827A (en) Method of and means for interconnecting externally screw-threaded shafts
EP3107156B1 (en) Removal device for a cable, method for removing a cable using the removal device and cable for use in the method
CN210525759U (en) A mold clamping oil cylinder connected with a semi-circular brake
US1885316A (en) Connecting device for use with stranded metal cables
US2556174A (en) Screw-thread swaging tool
US1732581A (en) Cable fitting
US2939732A (en) Cable fitting
US1390830A (en) Wire-rope socket
RU193041U1 (en) FUEL INJECTOR ELECTROMAGNET
US1941113A (en) Terminal for wire cables
US1389787A (en) Coupling for rods
US693206A (en) Wire-connector.
US1819652A (en) Connecter