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. |
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Сторінка 6
... hook switch in its proper position . The inclosing case is of hard rubber and com- prises three parts : the body b , the tailpiece t , and the diaphragm cap m . Although the cap m can be unscrewed , permitting the diaphragm to be taken ...
... hook switch in its proper position . The inclosing case is of hard rubber and com- prises three parts : the body b , the tailpiece t , and the diaphragm cap m . Although the cap m can be unscrewed , permitting the diaphragm to be taken ...
Сторінка 38
... hook switch a , and its weight keeps a down so that it touches the con- tact piece c . The generator g is provided with a shunts , which forms a low - resistance path around g when the generator is not in use . The shunt , however , is ...
... hook switch a , and its weight keeps a down so that it touches the con- tact piece c . The generator g is provided with a shunts , which forms a low - resistance path around g when the generator is not in use . The shunt , however , is ...
Сторінка 39
... hook of the switch a and places it to his ear , whereupon a is drawn upward against the contact pieces u and v , as in Fig . 28 , by means of a spring . This action leaves the receiver r connected to the line wires by the circuit m va ...
... hook of the switch a and places it to his ear , whereupon a is drawn upward against the contact pieces u and v , as in Fig . 28 , by means of a spring . This action leaves the receiver r connected to the line wires by the circuit m va ...
Сторінка 40
... Hook Switch for a series connection is shown in one form in Fig . 30. It is pivoted at o and supported at the other end by the spring s , being thus free to move up and down through the slot in the box in which it is mounted . Its ...
... Hook Switch for a series connection is shown in one form in Fig . 30. It is pivoted at o and supported at the other end by the spring s , being thus free to move up and down through the slot in the box in which it is mounted . Its ...
Сторінка 41
... hook h , is already familiar to the reader . The hook switch . is usually of brass , nickel - plated , and the springs are of steel with platinum tips . Platinum tips are employed because they do not corrode , but present a good wearing ...
... hook h , is already familiar to the reader . The hook switch . is usually of brass , nickel - plated , and the springs are of steel with platinum tips . Platinum tips are employed because they do not corrode , but present a good wearing ...
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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 |
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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