GB604908A - Improvements in and relating to telephone receivers - Google Patents
Improvements in and relating to telephone receiversInfo
- Publication number
- GB604908A GB604908A GB786244A GB786244A GB604908A GB 604908 A GB604908 A GB 604908A GB 786244 A GB786244 A GB 786244A GB 786244 A GB786244 A GB 786244A GB 604908 A GB604908 A GB 604908A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ribbon
- bolts
- secured
- telephone
- edge portions
- 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
- H04R9/10—Telephone receivers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
604,908. Telephone receivers. COMMUNICATIONS PATENTS, Ltd., and ROGERS, E. W. April 27, 1944, No. 7862. [Class 40 (iv)] In a telephone receiver comprising a conductive ribbon located in a magnetic field and through which the signal currents are passed, the side edges of the ribbon include parts having a thickness greater than that of the portion of the ribbon intermediate the said edges. The thickened portions may be formed by furling the edge portions of the ribbon, Figs. 3, 4, 5 (not shown), by cementing non-conductive strips of insulating material on one or both sides of the ribbon, Fig. 6 (not shown), or by applying a layer of paint or lacquer on the edge portions, Figs. 7, 8 (not shown). In the telephone receiver shown, the ribbon 10, which is corrugated, has thickened portions 11 and its ends are clamped between metal plates 16, 17 to which a panel 14 with a rectangular aperture 15 is secured by bolts 18. The ribbon is located between polepieces 21 secured to a semicircular permanent magnet 20 and terminal tags 23 are connected to two of the bolts 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB786244A GB604908A (en) | 1944-04-27 | 1944-04-27 | Improvements in and relating to telephone receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB786244A GB604908A (en) | 1944-04-27 | 1944-04-27 | Improvements in and relating to telephone receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB604908A true GB604908A (en) | 1948-07-13 |
Family
ID=9841217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB786244A Expired GB604908A (en) | 1944-04-27 | 1944-04-27 | Improvements in and relating to telephone receivers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB604908A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE905616C (en) * | 1952-01-01 | 1954-03-04 | Eugen Beyer | Dynamic microphone or speaker |
| US3564163A (en) * | 1967-04-20 | 1971-02-16 | Robert L Wathams | Ribbon loudspeaker |
| US4001523A (en) * | 1975-01-14 | 1977-01-04 | Kasatkin Alexei F | Ribbon loudspeaker |
-
1944
- 1944-04-27 GB GB786244A patent/GB604908A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE905616C (en) * | 1952-01-01 | 1954-03-04 | Eugen Beyer | Dynamic microphone or speaker |
| US3564163A (en) * | 1967-04-20 | 1971-02-16 | Robert L Wathams | Ribbon loudspeaker |
| US4001523A (en) * | 1975-01-14 | 1977-01-04 | Kasatkin Alexei F | Ribbon loudspeaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1129207A (en) | Improvements in or relating to coil assemblies for magnetic forming apparatus | |
| GB1186220A (en) | Circulator. | |
| GB923178A (en) | Improvements in or relating to radio apparatus for use in a continuous wave radio system | |
| GB604908A (en) | Improvements in and relating to telephone receivers | |
| GB592490A (en) | Improvements in or relating to directive electric antenna systems | |
| GB836574A (en) | Improvements in electromagnetic switches | |
| GB944039A (en) | Improvements in or relating to supporting plates for printed circuits | |
| GB1023518A (en) | Electrical switching arrangement | |
| GB1505690A (en) | Ribbon loudspeaker | |
| GB1457614A (en) | Reed contact units | |
| GB969830A (en) | Low side lobe horn antenna | |
| GB1018533A (en) | Improvements in or relating to radio aerials | |
| GB989309A (en) | Improvements in microwave isolators | |
| GB803723A (en) | Improvements in or relating to aircraft antenna | |
| GB1021320A (en) | Microminiature electrical connection | |
| GB725143A (en) | Improvements in high-tension lead-in insulators | |
| GB964591A (en) | Improvements in electric switching devices | |
| ES279105A1 (en) | Improvements in or relating to electromagnetic switches | |
| GB795415A (en) | Improvements in or relating to high frequency electric attenuators | |
| GB1311971A (en) | Microwave horn antennas | |
| GB568767A (en) | Improvements in electric terminals | |
| GB563822A (en) | Metal plate electric rectifier | |
| GB1332177A (en) | Wide-band circulator | |
| GB951292A (en) | Improved helical antenna | |
| GB1059310A (en) | Improvements in or relating to depositing conductive magnetic material on to a non-conductive substrate |