GB444858A - Improvements in or relating to electric communication cables - Google Patents
Improvements in or relating to electric communication cablesInfo
- Publication number
- GB444858A GB444858A GB1593335A GB1593335A GB444858A GB 444858 A GB444858 A GB 444858A GB 1593335 A GB1593335 A GB 1593335A GB 1593335 A GB1593335 A GB 1593335A GB 444858 A GB444858 A GB 444858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuits
- conductors
- heyes
- inductance
- outer circuits
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
Landscapes
- Communication Cables (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
444,858. Cables. STANDARD TELEPHONES & CABLES, Ltd., and SMITH, A. G., 63, Aldwych, London. May 31, 1935, No. 15933. Drawings to Specification. [Class 36] In a metal-sheathed multi-conductor highfrequency communication cable the influence of the metal sheath on the outer circuits of the cable is compensated by employing in the circuits adjacent the sheath conductors whose direct current resistance is lower than that of the conductors of the inner circuits by such an amount that at a specified frequency within the range of frequencies over which the cable operates the alternating current resistances of the inner and outer circuits are substantially equal. The compensation is preferably effected by making the conductors of the outer circuits of larger diameter than the conductors of the inner circuits so as to increase the inductance of the outer circuits, but compensation may also be effected by the use of conductors of different conductivity for the inner and outer circuits. 444,880. Indicating faults; inductance measurements. HEYES & CO., Ltd., and HEYES, W. A., Water-Heyes Road, Wigan. June 30, 1934, No. 19345. [Class 37] Apparatus for testing inductance values of transformers, coils or bell windings employed in mines comprises an induction coil 2 having its secondary connected to a milliammeter 5 and to flexible test terminals 6, 7, a coil 8 of predetermined inductance value being connected in circuit at will for the purpose of checking the reading of the meter with a given battery potential. The meter may be calibrated in henrys.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB653235A GB453124A (en) | 1935-03-01 | 1935-03-01 | Improvements in or relating to multi-conductor electric telephone cables for carrier current communication |
Publications (1)
Publication Number | Publication Date |
---|---|
GB444858A true GB444858A (en) | 1936-03-30 |
Family
ID=9816213
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB653235A Expired GB453124A (en) | 1935-03-01 | 1935-03-01 | Improvements in or relating to multi-conductor electric telephone cables for carrier current communication |
GB1650636A Expired GB453198A (en) | 1935-03-01 | 1935-03-01 | Improvements in or relating to multi-conductor electric telephone cables for carrier current communication |
GB1593335A Expired GB444858A (en) | 1935-03-01 | 1935-05-31 | Improvements in or relating to electric communication cables |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB653235A Expired GB453124A (en) | 1935-03-01 | 1935-03-01 | Improvements in or relating to multi-conductor electric telephone cables for carrier current communication |
GB1650636A Expired GB453198A (en) | 1935-03-01 | 1935-03-01 | Improvements in or relating to multi-conductor electric telephone cables for carrier current communication |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE414036A (en) |
DE (2) | DE737752C (en) |
FR (1) | FR804751A (en) |
GB (3) | GB453124A (en) |
NL (1) | NL42997C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102915811A (en) * | 2011-08-04 | 2013-02-06 | 江苏中辰电缆有限公司 | Sonar signal control flexile cable with high electromagnetic-interference resistance |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE749482C (en) * | 1937-09-07 | 1945-01-12 | Telecommunication cable with symmetrically stranded wire groups for the transmission of higher frequencies | |
DE976191C (en) * | 1951-05-30 | 1963-04-25 | Siemens Ag | Multi-layer carrier frequency telecommunication cable |
DE2939171C2 (en) * | 1979-09-27 | 1981-08-20 | Siemens AG, 1000 Berlin und 8000 München | Cable made up of three bundles with three cores each |
US4522083A (en) * | 1980-11-28 | 1985-06-11 | Morgan Clyde R | Bicycle handlebar grips |
-
0
- NL NL42997D patent/NL42997C/xx active
- BE BE414036D patent/BE414036A/xx unknown
-
1935
- 1935-03-01 GB GB653235A patent/GB453124A/en not_active Expired
- 1935-03-01 GB GB1650636A patent/GB453198A/en not_active Expired
- 1935-05-31 GB GB1593335A patent/GB444858A/en not_active Expired
-
1936
- 1936-02-18 FR FR804751D patent/FR804751A/en not_active Expired
- 1936-02-29 DE DEST58101D patent/DE737752C/en not_active Expired
- 1936-05-14 DE DEI55001D patent/DE673672C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102915811A (en) * | 2011-08-04 | 2013-02-06 | 江苏中辰电缆有限公司 | Sonar signal control flexile cable with high electromagnetic-interference resistance |
Also Published As
Publication number | Publication date |
---|---|
GB453198A (en) | 1936-09-01 |
DE673672C (en) | 1939-03-25 |
DE737752C (en) | 1943-07-22 |
GB453124A (en) | 1936-09-01 |
BE414036A (en) | |
NL42997C (en) | |
FR804751A (en) | 1936-11-02 |
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