Telephone Construction, Installation, Wiring, Operation and MaintenanceN.W. Henley Publishing Company, 1914 - 223 стор. |
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Результати 6-10 із 16
Сторінка 107
... clamping it . Staples are used to prevent the guy from slipping on the pole . Guy stubs serve to raise the cable when it is desired to clear obstacles . Thus , in Fig . 70 the guy stub a permits the pole guy m to be carried sufficiently ...
... clamping it . Staples are used to prevent the guy from slipping on the pole . Guy stubs serve to raise the cable when it is desired to clear obstacles . Thus , in Fig . 70 the guy stub a permits the pole guy m to be carried sufficiently ...
Сторінка 114
... drawn tight by means of clamps and tackle , Fig . 76 , until the sag in inches between the adjacent poles corresponds to the figures given in the following table for the tempera- ture and length of span in feet dealt with . 114.
... drawn tight by means of clamps and tackle , Fig . 76 , until the sag in inches between the adjacent poles corresponds to the figures given in the following table for the tempera- ture and length of span in feet dealt with . 114.
Сторінка 115
... Clamps and Tackle Used in Pulling up the Line Wires and if allowed a greater deflection they will swing in the wind and eventually break at the insulators . Temperature in De- grees Fahrenheit 75 -30 -10 IO 30 60 80 100 SPAN IN FEET 100 ...
... Clamps and Tackle Used in Pulling up the Line Wires and if allowed a greater deflection they will swing in the wind and eventually break at the insulators . Temperature in De- grees Fahrenheit 75 -30 -10 IO 30 60 80 100 SPAN IN FEET 100 ...
Сторінка 121
... clamps s in the latter case . Protection . - Pole lines should be protected from lightning by placing on every tenth pole a light- ning rod composed of No. 6 galvanized iron wire . This should extend at least 12 inches above the S A B ...
... clamps s in the latter case . Protection . - Pole lines should be protected from lightning by placing on every tenth pole a light- ning rod composed of No. 6 galvanized iron wire . This should extend at least 12 inches above the S A B ...
Сторінка 122
... . & S. gage soft - drawn copper wires covered with dry paper and twisted in pairs , the bunch being encased in a lead sheath. FIG . 89. - A Lead - covered Telephone Ca- FIG . 90. Suspension Cable and Clamp Fastened to a. 122.
... . & S. gage soft - drawn copper wires covered with dry paper and twisted in pairs , the bunch being encased in a lead sheath. FIG . 89. - A Lead - covered Telephone Ca- FIG . 90. Suspension Cable and Clamp Fastened to a. 122.
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Telephone Construction: Installation, Wiring, Operation and Maintenance ... William Hiram Radcliffe Попередній перегляд недоступний - 2015 |
Telephone Construction: Installation, Wiring, Operation and Maintenance ... William Hiram Radcliffe Попередній перегляд недоступний - 2017 |
Загальні терміни та фрази
alternating current ampere armature automatic binding posts bolt brace called cents clamp complete metallic circuit Concrete conductors conduit connected construction containing copper copper wire cord cross-arms desk set diaphragm distributing board Dry cells electrical electromotive force exchange switchboard extension bell fastened feet fully illustrated gage gas engines gear ground heat coil HISCOX hole hook switch inches induction coil installation insulated iron wire jack lamp Leclanché cell lightning arrester line circuit line drop line wires machine magnet magneto bell mechanical method mounted O'CONOR SLOANE ohms operator operator's pair party party-line systems pipe placed plate plug pole position practical primary winding Protective Apparatus receiver resistance ringing key rope rubber screw sheath shown in Fig shows shunt side signal sleeve soldered spring steam steel storage battery switch arm tele Telephone Circuit telephone set terminals Testing tion transmitter usually wall set zinc
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