US217479A - Improvement in underground-telegraph lines - Google Patents
Improvement in underground-telegraph lines Download PDFInfo
- Publication number
- US217479A US217479A US217479DA US217479A US 217479 A US217479 A US 217479A US 217479D A US217479D A US 217479DA US 217479 A US217479 A US 217479A
- Authority
- US
- United States
- Prior art keywords
- underground
- grooves
- improvement
- laid
- telegraph
- 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
- 239000010426 asphalt Substances 0.000 description 30
- 239000004020 conductor Substances 0.000 description 14
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 240000002027 Ficus elastica Species 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 2
- 241000234435 Lilium Species 0.000 description 2
- 210000002105 Tongue Anatomy 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920001195 polyisoprene Polymers 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
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
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
Definitions
- My invention relates to the means for holding the wires in position, insulating them, and rendering the entire structure water-proof.
- Figure l is a cross-section of the lines and the inclosing-case
- Fig. 2 is a plan, partially in section, of thecase and lines.
- the telegraph wires or conductors a are of copper or other material, and the size of the underground structure will depend upon the number et' conductors.
- lhe case l is ot' either voed, metal, or earthenivare. l prefer to make the same of wood thoroughly coated with asphalt.
- the sections or lengths ot' case are united by tongues and grooves at c, and india-rubber, asphalt, or other yielding material is to be inserted to keep out water, and with metal cases this yields to expansion or contraction from heat or cold.
- the cover/' is 'preferably secured by screws.
- a layer ot' melted native asphalt or bitumen is laid in the case l), and upon this a pla-nk or board, la, having numerous grooves in its upper surface, and into these grooves the conductors a are laid. It is generally best to supply 'these telegraph-wires trom reels that are drawn along the top edge ot' the pipe or case l), and planks or boards 7L are laid successively upon the bitumen, the grooves matching each other.
- Meited bitumen or asphalt is poured upon the boards l1., and in sutlicient quantities to till the grooves and prevent moisture reaching either the board or the conductors.
- a second board, l is laid upon the asphalt While hot, and pressure is applied sut'licientto cause an intimate contact between the board and the bitumen.
- the grooved boards should be laid so that the joints ot' one layer come near the middle ot' the boards ot' the next layer.
- a secondrange ot' wires is laid in the grooves in the surfaces ot' the second layer oi boards, l, and the filling-in ot melted bitumen is made use of,as before described. ln this manner several layers are introduced in the case, and then the cover is puton and fastened down, it' desired.
- bitumen being imlestructible, entirely Water-proof', and slightly elastic, is excellently adapted to the insulation and protection oi underground-telegraph lines, and the risk ot' injury is lessened in consequence of the slight elasticity of the bitumen, because the same will yield and not crack by the settling of the earth or the frost displacing the case containing the conductors.
- bitumen or asphalt is to be understood that it preferable not to employ the interior or brittle quality of bitumen or asphalt.
Description
PatentedJu|y15,1879.
UNITED STATES PATENT OEEIoE.
JAMES S. PIERSON, OF BROOKLYN, NEET YORK.
lMPROVEMENT IN UNDERGROUND-TELEGRAPH LINES.
Specification forming part ot' Letters Patent No. 217,479, dated July 15, 1879; application lilcd November 22, 1878.
To all whom it may concern:
Be it known that l, JAMES S. PIERSON, ot' Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Undergrou11d-Telegraph Lilies, of which the following is a specification.
Telegraph wires heretofore laid in the ground have been incased in non-conducting material, and then introduced in tubes. In some instances these tubes have been ot' metal and laid together in sections.
My invention relates to the means for holding the wires in position, insulating them, and rendering the entire structure water-proof.
In the drawings, Figure l is a cross-section of the lines and the inclosing-case, and Fig. 2 is a plan, partially in section, of thecase and lines.
The telegraph wires or conductors a are of copper or other material, and the size of the underground structure will depend upon the number et' conductors.
lhe case l) is ot' either voed, metal, or earthenivare. l prefer to make the same of wood thoroughly coated with asphalt. The sections or lengths ot' case are united by tongues and grooves at c, and india-rubber, asphalt, or other yielding material is to be inserted to keep out water, and with metal cases this yields to expansion or contraction from heat or cold. The cover/'is 'preferably secured by screws.
A layer ot' melted native asphalt or bitumen is laid in the case l), and upon this a pla-nk or board, la, having numerous grooves in its upper surface, and into these grooves the conductors a are laid. It is generally best to supply 'these telegraph-wires trom reels that are drawn along the top edge ot' the pipe or case l), and planks or boards 7L are laid successively upon the bitumen, the grooves matching each other.
Meited bitumen or asphalt is poured upon the boards l1., and in sutlicient quantities to till the grooves and prevent moisture reaching either the board or the conductors.
A second board, l, is laid upon the asphalt While hot, and pressure is applied sut'licientto cause an intimate contact between the board and the bitumen.
The grooved boards should be laid so that the joints ot' one layer come near the middle ot' the boards ot' the next layer.
A secondrange ot' wires is laid in the grooves in the surfaces ot' the second layer oi boards, l, and the filling-in ot melted bitumen is made use of,as before described. ln this manner several layers are introduced in the case, and then the cover is puton and fastened down, it' desired.
The bitumen, being imlestructible, entirely Water-proof', and slightly elastic, is excellently adapted to the insulation and protection oi underground-telegraph lines, and the risk ot' injury is lessened in consequence of the slight elasticity of the bitumen, because the same will yield and not crack by the settling of the earth or the frost displacing the case containing the conductors.
lt is to be understood that it preferable not to employ the interior or brittle quality of bitumen or asphalt.
Lateral branches are taken oli" in the manner represented in Fig. l, the wires being laid in transverse grooves that correspond to the grooves in the plank that pass ott' laterally.
l claim as my invention- In combination with grooved planks or boards and the conductors in such grooves, a filling ot' asphalt introduced into such grooves and around the boards, substantially as set forth.
Signed by me 'this 19th day of November, A. D. 1878.
JAMES S. PERSOJ.
Vifitnesses c GEO. T. PrNcKNEY, 'WILLIAM G. Mo'r'r.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US217479A true US217479A (en) | 1879-07-15 |
Family
ID=2286881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US217479D Expired - Lifetime US217479A (en) | Improvement in underground-telegraph lines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US217479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4920723A (en) * | 1989-07-21 | 1990-05-01 | The L.S. Starrett Company | Hollow granite box beam and method of forming |
| US5159154A (en) * | 1990-08-21 | 1992-10-27 | Thinking Machines Corporation | Multiple conductor dielectric cable assembly and method of manufacture |
-
0
- US US217479D patent/US217479A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4920723A (en) * | 1989-07-21 | 1990-05-01 | The L.S. Starrett Company | Hollow granite box beam and method of forming |
| US5159154A (en) * | 1990-08-21 | 1992-10-27 | Thinking Machines Corporation | Multiple conductor dielectric cable assembly and method of manufacture |
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