Telephone Construction, Installation, Wiring, Operation and Maintenance: A Practical Reference Book and Guide for Electricians, Wiremen, Engineers, Contractors, Architects, and Others Interested in Standard Telephone Practice...N. W. Henley publishing Company, 1908 - 171 стор. |
З цієї книги
Результати 1-5 із 17
Сторінка 16
... desired ; it is sensitive to sound waves , but not to mechanical vibrations ; the carbon blocks secure excellent contact with the carbon granules , and the latter give but little trouble by caking or " pack- ing " because they do not ...
... desired ; it is sensitive to sound waves , but not to mechanical vibrations ; the carbon blocks secure excellent contact with the carbon granules , and the latter give but little trouble by caking or " pack- ing " because they do not ...
Сторінка 34
... desired to be able to ring one or the other of them at will . Its construction differs from the polarized bell only in the use of a spring s , which is fastened to either side of the armature e so as to pull that end of it toward the ...
... desired to be able to ring one or the other of them at will . Its construction differs from the polarized bell only in the use of a spring s , which is fastened to either side of the armature e so as to pull that end of it toward the ...
Сторінка 49
... desired path , pushing a flat spring wire from one hole toward the other , and catching it through the latter hole with a wire hook . By means of the spring wire , the flexible conduit con- taining the telephone wires may then be drawn ...
... desired path , pushing a flat spring wire from one hole toward the other , and catching it through the latter hole with a wire hook . By means of the spring wire , the flexible conduit con- taining the telephone wires may then be drawn ...
Сторінка 54
... desired ; this surrounds a pin and is fastened to it by an easily fusible solder . A spring bears upon the pin so that when released by the fusing of the solder it comes in contact with the ground connection and opens the circuit pass ...
... desired ; this surrounds a pin and is fastened to it by an easily fusible solder . A spring bears upon the pin so that when released by the fusing of the solder it comes in contact with the ground connection and opens the circuit pass ...
Сторінка 62
... desired , the telephone on the desk , and the box screwed either under it or at its side . Three - wire twisted conductors , each of No. 18. FIG . 48. - An Extension Bell for a Bridging Station FIG . 54. - Cabinet Wall Set FIG . 56. 62 ...
... desired , the telephone on the desk , and the box screwed either under it or at its side . Three - wire twisted conductors , each of No. 18. FIG . 48. - An Extension Bell for a Bridging Station FIG . 54. - Cabinet Wall Set FIG . 56. 62 ...
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Telephone Construction, Installation, Wiring, Operation and Maintenance: A ... Harry Cooke Cushing Попередній перегляд недоступний - 2017 |
Telephone Construction, Installation, Wiring, Operation and Maintenance: A ... Harry Cooke Cushing Попередній перегляд недоступний - 2018 |
Telephone Construction, Installation, Wiring, Operation and Maintenance: A ... Harry Cooke Cushing Попередній перегляд недоступний - 2018 |
Загальні терміни та фрази
50 cents alternating current ampere armature binding posts bolted Bridging Connection Bridging Station cable called carbon blocks clearing-out drop complete metallic circuit conductors Construction copper wire cord core cross-arms desk set diaphragm distributing board Dry Cell electrical electromotive force engines exchange switchboard extension bell fastened feet fuse gage ground heat coil hole hook switch inch induction coil insulated iron wire jack latter Leclanché cell lightning arrester line circuit line drop line wires listening key machine magneto bell mechanical mounted ohms operator party party-line systems placed plate plug pole porous cup position PRACTICAL BOOKS primary winding Protective Apparatus receiver ring the bell ringer ringing key rubber series station shown in Fig shows shunt side signaling sleeve soldered solid-back spring steel switch arm talking circuit talking current tele Telephone Circuit tested threads tion transmitter usually vibrations volts wall set wound zinc