GB217192A - Improvements in and relating to electrodynamic telephones - Google Patents
Improvements in and relating to electrodynamic telephonesInfo
- Publication number
- GB217192A GB217192A GB11223/24A GB1122324A GB217192A GB 217192 A GB217192 A GB 217192A GB 11223/24 A GB11223/24 A GB 11223/24A GB 1122324 A GB1122324 A GB 1122324A GB 217192 A GB217192 A GB 217192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- rib
- electromagnets
- ribs
- magnetic
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Telephone Set Structure (AREA)
Abstract
217,192. Siemens & Halske Akt.-Ges. June 8, 1923, [Convention date]. Magnetic instruments.-A non-conducting and non-magnetic diaphragm is formed with a rib through which the telephone currents pass. The diaphragm may be of mica and the rib of aluminium. The rib 2 may be continuous and serpentine, Fig. 2, successive portions being arranged between poles 5 of electromagnets of alternate polarity. A series of single aluminium strips 12 - - 17, Fig. 3, may be used, the ribs 12, 13, 14 being traversed by current in one direction and the ribs 15, 16, 17 by current in the opposite direction. The pole of the electromagnet 19 in the centre is of opposite sense to those of electromagnets 18, 20. Pole-pieces 21, 23, 24 and magnetic bridges 22, 25 are arranged between the ribs and are secured to the frame 27, 28 carrying the diaphragm. The cores of all three electromagnets are fitted in a common yoke 50. The diaphragm may be split up into separate bands each carrying a single rib and, in a modification, Fig. 6, these bands 31, 32, 33 are arranged one above the other, the sound passing outwards through slots 42, 43, 44. Each two adjacent diaphragms may be arranged to face one another so that the sound will proceed from the same slot.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES63058D DE410114C (en) | 1923-06-08 | 1923-06-08 | Electrodynamic telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB217192A true GB217192A (en) | 1924-09-11 |
Family
ID=27770804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11223/24A Expired GB217192A (en) | 1923-06-08 | 1924-05-06 | Improvements in and relating to electrodynamic telephones |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1604532A (en) |
| AT (1) | AT103800B (en) |
| CH (1) | CH109033A (en) |
| DE (1) | DE410114C (en) |
| GB (1) | GB217192A (en) |
| NL (1) | NL15444C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419608A (en) * | 1935-05-29 | 1947-04-29 | Submarine Signal Co | Electrical oscillator |
| US2444967A (en) * | 1936-03-23 | 1948-07-13 | Submarine Signal Co | Oscillator |
| US2517565A (en) * | 1939-01-21 | 1950-08-08 | Harvey C Hayes | Electrodynamic transceiver for transmission and reception of sound |
| US2437085A (en) * | 1943-03-12 | 1948-03-02 | Rca Corp | Heat detection device |
| US2789161A (en) * | 1951-04-05 | 1957-04-16 | Joseph B Brennan | Loud-speakers |
| US2978671A (en) * | 1951-08-11 | 1961-04-04 | Harris Transducer Corp | Electrodynamic transducer |
| US3027541A (en) * | 1951-08-11 | 1962-03-27 | Harris Transducer Corp | Structure for use in an electrodynamic transducer |
| US2978669A (en) * | 1954-03-08 | 1961-04-04 | Harris Transducer Corp | Underwater electrodynamic acoustic transducer with air-filled composite diaphragm |
| US3018465A (en) * | 1954-05-04 | 1962-01-23 | Harris Transducer Corp | Compliant acoustic radiating means |
| US3066200A (en) * | 1958-08-11 | 1962-11-27 | William Ward Jackson | Speaker device |
| US3164686A (en) * | 1959-09-21 | 1965-01-05 | Tibbetts Industries | Electrodynamic transducer |
| FR1269138A (en) * | 1960-06-23 | 1961-08-11 | Improvements to loudspeakers, microphones, and similar electrodynamic devices |
-
0
- NL NL15444D patent/NL15444C/xx active
-
1923
- 1923-06-08 DE DES63058D patent/DE410114C/en not_active Expired
-
1924
- 1924-04-07 CH CH109033D patent/CH109033A/en unknown
- 1924-04-11 AT AT103800D patent/AT103800B/en active
- 1924-05-06 GB GB11223/24A patent/GB217192A/en not_active Expired
- 1924-05-15 US US713481A patent/US1604532A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1604532A (en) | 1926-10-26 |
| DE410114C (en) | 1925-02-26 |
| AT103800B (en) | 1926-07-26 |
| CH109033A (en) | 1925-05-16 |
| NL15444C (en) |
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