US290769A - Telegraph and telephone wire - Google Patents
Telegraph and telephone wire Download PDFInfo
- Publication number
- US290769A US290769A US290769DA US290769A US 290769 A US290769 A US 290769A US 290769D A US290769D A US 290769DA US 290769 A US290769 A US 290769A
- Authority
- US
- United States
- Prior art keywords
- telegraph
- wire
- telephone wire
- telephone
- gray
- 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
Links
- 230000001939 inductive effect Effects 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
Images
Classifications
-
- 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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
Definitions
- My invention has relation to wires for telegraph and telephone lines; and it consists in an anti-inductive wire, as hereinafter more fully described and claimed.
- Figure 1 represents a perspective view of a piece of my improved wire
- Fig. 2 is a cross-section on an enlarged scale of the same, like letters of reference indicating corresponding parts in both the figures.
Description
(No Model.)
G. GRAY;
TELEGRAPH AND TELEPHONE WIEE.
No. 290,769. I Patented Dec. 25, 1883.
jZZ/fi z WITNESSE$ INVENTOB.
WE ZW ATTORNEYS UNITED STATES PATENT rricn,
GORHAMI GRAY, OF BOSTON, MASSACHUSETTS.
TELEGRAPH AND TELEPHONE WIRE.
To all whom it may concern.-
Be it known that I, GORHAM GRAY, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and use ful Improvements in Telegraph and Telephone fires; and I do hereby declarethat the followingis a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, which form a part of this specification.
My invention has relation to wires for telegraph and telephone lines; and it consists in an anti-inductive wire, as hereinafter more fully described and claimed.
In telephone-wires as now ordinarily constructed, great difficulty is experienced, especially on long lines, in carrying on plain and intelligible conversation between two points connectedby the wire, on account of induction from other wires in proximity to the telephonewire; and my improvement consists in an insulated wire of the form described and claimed, whereby I have found, by practical experiment over long lines and amidst a system of other wires, that the induction is greatly lessened, and the conversation carried on between the two points at the opposite ends of the wire EOIFICATION forming part of Letters Patent No. 290,769, dated December 25, 1883,
Application filed January 3, 1883.
(No model.)
made very much plainerand more intelligible, owing to the anti-inductive properties of my improved wire.
In the accompanying drawings, Figure 1 represents a perspective view of a piece of my improved wire, and Fig. 2 is a cross-section on an enlarged scale of the same, like letters of reference indicating corresponding parts in both the figures.
By reference to these figures it will be seen that I form my improved anti-inductive wire with a series of spiral grooves, B, formed by indenting the metal of the wire body A. The special machinery wherebythese spiral grooves are formed forms the subject of another application for Letters Patent.
I claim as my invention and desire to secure by Letters Patent of the United States An anti-inductive device for telegraph and telephone lines, consisting ofa spirallygrooved wire, substantially as set forth.
In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.
GORHAM GRAY.
Vitnesses:
ALVAH L. Swnrr, J. F. REILY.
Publications (1)
Publication Number | Publication Date |
---|---|
US290769A true US290769A (en) | 1883-12-25 |
Family
ID=2359957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US290769D Expired - Lifetime US290769A (en) | Telegraph and telephone wire |
Country Status (1)
Country | Link |
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US (1) | US290769A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2417785A (en) * | 1943-05-08 | 1947-03-18 | Westinghouse Electric Corp | Low-loss conductor for highfrequency currents |
US6541708B2 (en) * | 2000-06-23 | 2003-04-01 | Apollo Science Laboratory Co., Ltd. | Helical surfaced conductor and helical surfaced conductor device provided therewith |
US20040168821A1 (en) * | 2002-03-19 | 2004-09-02 | Yoshihide Goto | Electric wire |
US20040182598A1 (en) * | 2003-03-17 | 2004-09-23 | M/A Com, Inc. | Stabilization of dielectric used in transmission line structures |
US20060272844A1 (en) * | 2005-06-01 | 2006-12-07 | Outokumpu Copper Neumayer Gmbh | Electric connection element |
US7479597B1 (en) * | 2007-11-28 | 2009-01-20 | International Business Machines Corporation | Conductor cable having a high surface area |
-
0
- US US290769D patent/US290769A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2417785A (en) * | 1943-05-08 | 1947-03-18 | Westinghouse Electric Corp | Low-loss conductor for highfrequency currents |
US6541708B2 (en) * | 2000-06-23 | 2003-04-01 | Apollo Science Laboratory Co., Ltd. | Helical surfaced conductor and helical surfaced conductor device provided therewith |
US20040168821A1 (en) * | 2002-03-19 | 2004-09-02 | Yoshihide Goto | Electric wire |
US20040168822A1 (en) * | 2002-03-19 | 2004-09-02 | Yoshihide Goto | Electric wire |
US6967289B2 (en) | 2002-03-19 | 2005-11-22 | Goto Electronic, Co. | Electric wire |
US20040182598A1 (en) * | 2003-03-17 | 2004-09-23 | M/A Com, Inc. | Stabilization of dielectric used in transmission line structures |
US8278556B2 (en) * | 2003-03-17 | 2012-10-02 | Cobham Defense Electronic Systems Corporation | Stabilization of dielectric used in transmission line structures |
US20060272844A1 (en) * | 2005-06-01 | 2006-12-07 | Outokumpu Copper Neumayer Gmbh | Electric connection element |
US7476800B2 (en) * | 2005-06-01 | 2009-01-13 | Outokumpu Copper Neumayer Gmbh | Electric connection element |
US20090077797A1 (en) * | 2005-06-01 | 2009-03-26 | Outokumpu Copper Neumayer Gmbh | Electric connection element, and method of contacting electric components |
US7479597B1 (en) * | 2007-11-28 | 2009-01-20 | International Business Machines Corporation | Conductor cable having a high surface area |
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