US2154551A - Flexible stranded conductor - Google Patents
Flexible stranded conductor Download PDFInfo
- Publication number
- US2154551A US2154551A US71372A US7137236A US2154551A US 2154551 A US2154551 A US 2154551A US 71372 A US71372 A US 71372A US 7137236 A US7137236 A US 7137236A US 2154551 A US2154551 A US 2154551A
- Authority
- US
- United States
- Prior art keywords
- strands
- conductor
- stranded conductor
- metallic
- flexible stranded
- 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
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-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
Definitions
- My invention relates to stranded metallic conductors of electricity having a high degree of flexibility and more particularly to a stranded conductor in which all of the strands are twisted in a group in the same direction to form the finished conductor.
- Conductors oi the above type are commonly used with portable electric tools such as drills and grinders and lamps and are subject to he- In these cables, as heretofore constructed; each bending or fiexure tends to cause certain strands to bind against others.
- the sliding incident to the flexing of the conductor causes friction and abrasion of one strand on an adjacent one.
- My present invention provides a stranded conductor in which the binding of one strand on another and friction between the strands is avoided or largely eliminated.
- l is a longitudinal view of a length of conductor cable embodying my invention, parts of the insulation being progressively cut away to show the construction; and Fig. 2 is a cross section of the cable shown in Fig. 1.
- I provide cushioning strands intermingled with the metallic strands of which the conductor is composed.
- These cushioning strands may be made of cotton or other textile or other material having suilicient impressibility and resilience so that any tendency to binding between the metallic strands will be ved by a compression or distortion of the ermingled resilient strands.
- the condoctors iii and l I covered by individual sheaths it it of insulating material, such asrubber,
- Shey may be incorporated most convenient- 1y by inter-mingling them with the metallic threads or wires, as the latter are being assembled and twisted so that in the twisting operation the threads will become and remain. scattered throughout the strand. It will be understood that the position of any particular thread may vary at different intervals in the length of the conductor and may at'successive intervals occupy any position from the center to the outer periphery oi the conductor..
- a stranded eiectrical conductor for flexible cords comprising a plurality of metallic conducting strands twisted into a common with strands of said assembly in conductive contact with other strands and strands oi resilient material irregularly interspersed and twisted with said metallic strands in said conductor to vary in cross sectional position in the conductor and in relation to other strands at successive longitudinal distances.
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- Ropes Or Cables (AREA)
- Insulated Conductors (AREA)
Description
April .1 1939- H. v. WODTKE 2,154,551
v FLEXIBLE STRANDED CONDUCTOR Filed March 28, 1936 I mammal FIBROUJ mum Rwuinr .Srmos RUBBER 7 F6 19' I METALLIC 5mm:
' msuu'non lusuumou ummc 5mm INV ENT OR.
fia/vs VWo TKET.
ATTORNEYS.
0 quent bending or flexing.
Patented Apr. L8, 1939 v UNITED STATES PATENT OFFICE STRANDED CONDUCTOR Hans V. Wodtke, Marlon, Ind
or to Anaconda Wire & Cable Company, New York, N. Y., a corporation of Delaware My invention relates to stranded metallic conductors of electricity having a high degree of flexibility and more particularly to a stranded conductor in which all of the strands are twisted in a group in the same direction to form the finished conductor. Conductors oi the above type are commonly used with portable electric tools such as drills and grinders and lamps and are subject to he- In these cables, as heretofore constructed; each bending or fiexure tends to cause certain strands to bind against others. Moreover, the sliding incident to the flexing of the conductor causes friction and abrasion of one strand on an adjacent one.
My present invention provides a stranded conductor in which the binding of one strand on another and friction between the strands is avoided or largely eliminated.
The various features of the invention are iilustrated in connection with the accompanying drawing, in which l is a longitudinal view of a length of conductor cable embodying my invention, parts of the insulation being progressively cut away to show the construction; and Fig. 2 is a cross section of the cable shown in Fig. 1.
In my invention, I provide cushioning strands intermingled with the metallic strands of which the conductor is composed. These cushioning strands may be made of cotton or other textile or other material having suilicient impressibility and resilience so that any tendency to binding between the metallic strands will be ved by a compression or distortion of the ermingled resilient strands. In manufacshown in the accompanying drawing, the condoctors iii and l I covered by individual sheaths it it of insulating material, such asrubber,
are twisted together in helical turns. The spaces or valleys between the twisted conductors are then filled to an approximately circular cross .g the conductor, a number of cotton or other I section by means of a filling ll of suitable material, such as a fibrous or textile mass. The entire assembly is then enclosed in asheath l! of non-metallic material, such as rubber. It will be understood, howeventhat the conductors may be employed in various other cable constructions than that specifically shown in the drawper wires 66 and a number of strands ii, of resilient or fibrous material such as cotton thread. The threads I? may be of very low tensile strength, as they form merely a butler or number of buffers between the individual metallic strands l6. Shey may be incorporated most convenient- 1y by inter-mingling them with the metallic threads or wires, as the latter are being assembled and twisted so that in the twisting operation the threads will become and remain. scattered throughout the strand. It will be understood that the position of any particular thread may vary at different intervals in the length of the conductor and may at'successive intervals occupy any position from the center to the outer periphery oi the conductor..
several threads or strands of resilient material act as buffers, that when any two er more strands tend to crowd together when on the inside or outside of a turn the necessary space to prevent binding is made by a compressicn of the fibrous material. The sharpness of 1 the bending for any particular wire of the strand is generally lessened by relieving the binding of the wires.
Bering the bending or flexing of the conduc tor, displacement of the individual metallic wires is liable to take place. Such displacement either longitudinal or crosswise tends to rub the sur face of one wire against the surface of an Jacent wire. The interposition of the resilient strands, however, tends to lessen the direct contact of one wire on another and the consequent direct rubbing of the wires. The relative movement of the strands may take place on opposite sides of a resilient thread and the friction largely avoided. This friction may be still furtherlessened by impregnating the resilient strands with lubricating oils or solid such as graphite. These materials also tend to form a preservative coating on the wires protecting them against corrosion, particularly in those cases in which an impervious protective outer Jacket is not used.
What I claim is:
1. A stranded eiectrical conductor for flexible cords comprising a plurality of metallic conducting strands twisted into a common with strands of said assembly in conductive contact with other strands and strands oi resilient material irregularly interspersed and twisted with said metallic strands in said conductor to vary in cross sectional position in the conductor and in relation to other strands at successive longitudinal distances. I
2. The conductor of claim 1, in which said strands of resilient material are of fibrous textile materim.
3. 'meconductcrotclalmLinwhichsaidresilient strands are oi cotton.
4. The conductorot claim Linwhichsaidrcsilient strands are oi. relatively low tensile strength.
5. The conductor of claim 1, in which said nesilient strands carry a lubricant.
6. The conductor of claim 1, in which said strands are impregnated. with an oil.
HANS V. WODTKE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71372A US2154551A (en) | 1936-03-28 | 1936-03-28 | Flexible stranded conductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71372A US2154551A (en) | 1936-03-28 | 1936-03-28 | Flexible stranded conductor |
Publications (1)
Publication Number | Publication Date |
---|---|
US2154551A true US2154551A (en) | 1939-04-18 |
Family
ID=22100889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US71372A Expired - Lifetime US2154551A (en) | 1936-03-28 | 1936-03-28 | Flexible stranded conductor |
Country Status (1)
Country | Link |
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US (1) | US2154551A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462334A (en) * | 1944-06-02 | 1949-02-22 | Adrian A Pierson | Radio shielding sealing gasket |
US2892880A (en) * | 1954-03-18 | 1959-06-30 | Hohn Robert | Multi-strand, abrasion resistant electrical conductors |
US5994647A (en) * | 1997-05-02 | 1999-11-30 | General Science And Technology Corp. | Electrical cables having low resistance and methods of making same |
US6019736A (en) * | 1995-11-06 | 2000-02-01 | Francisco J. Avellanet | Guidewire for catheter |
US6137060A (en) * | 1997-05-02 | 2000-10-24 | General Science And Technology Corp | Multifilament drawn radiopaque highly elastic cables and methods of making the same |
US6215073B1 (en) | 1997-05-02 | 2001-04-10 | General Science And Technology Corp | Multifilament nickel-titanium alloy drawn superelastic wire |
US6313409B1 (en) | 1997-05-02 | 2001-11-06 | General Science And Technology Corp | Electrical conductors and methods of making same |
US6399886B1 (en) | 1997-05-02 | 2002-06-04 | General Science & Technology Corp. | Multifilament drawn radiopaque high elastic cables and methods of making the same |
US6449834B1 (en) | 1997-05-02 | 2002-09-17 | Scilogy Corp. | Electrical conductor coils and methods of making same |
-
1936
- 1936-03-28 US US71372A patent/US2154551A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462334A (en) * | 1944-06-02 | 1949-02-22 | Adrian A Pierson | Radio shielding sealing gasket |
US2892880A (en) * | 1954-03-18 | 1959-06-30 | Hohn Robert | Multi-strand, abrasion resistant electrical conductors |
US6019736A (en) * | 1995-11-06 | 2000-02-01 | Francisco J. Avellanet | Guidewire for catheter |
US5994647A (en) * | 1997-05-02 | 1999-11-30 | General Science And Technology Corp. | Electrical cables having low resistance and methods of making same |
US6137060A (en) * | 1997-05-02 | 2000-10-24 | General Science And Technology Corp | Multifilament drawn radiopaque highly elastic cables and methods of making the same |
US6215073B1 (en) | 1997-05-02 | 2001-04-10 | General Science And Technology Corp | Multifilament nickel-titanium alloy drawn superelastic wire |
US6248955B1 (en) | 1997-05-02 | 2001-06-19 | General Science And Technology Corp | Electrical cables having low resistance and methods of making the same |
US6313409B1 (en) | 1997-05-02 | 2001-11-06 | General Science And Technology Corp | Electrical conductors and methods of making same |
US6399886B1 (en) | 1997-05-02 | 2002-06-04 | General Science & Technology Corp. | Multifilament drawn radiopaque high elastic cables and methods of making the same |
US6449834B1 (en) | 1997-05-02 | 2002-09-17 | Scilogy Corp. | Electrical conductor coils and methods of making same |
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