GB234553A - Improvements in or relating to head-bands for telephones and like instruments - Google Patents
Improvements in or relating to head-bands for telephones and like instrumentsInfo
- Publication number
- GB234553A GB234553A GB518624A GB518624A GB234553A GB 234553 A GB234553 A GB 234553A GB 518624 A GB518624 A GB 518624A GB 518624 A GB518624 A GB 518624A GB 234553 A GB234553 A GB 234553A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- telephones
- bands
- instruments
- relating
- 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
- H04R5/00—Stereophonic arrangements
- H04R5/033—Headphones for stereophonic communication
- H04R5/0335—Earpiece support, e.g. headbands or neckrests
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
234,553. Terry, C. Feb. 29, 1924. Rods and bars. - An ornamental head-band for a telephone head-set is made by subjecting a plain metal strip to a pressing or rolling operation to form on it projections and indentations except at the ends 12a, which are left plain to enable them to pivot freely in contact with the ends of a second head-band. The metal used is preferably that known under the registered Trade. Mark " Duralumin," and the strip is shaped to the correct curvature during the pressing and rolling operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB518624A GB234553A (en) | 1924-02-29 | 1924-02-29 | Improvements in or relating to head-bands for telephones and like instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB518624A GB234553A (en) | 1924-02-29 | 1924-02-29 | Improvements in or relating to head-bands for telephones and like instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB234553A true GB234553A (en) | 1925-06-02 |
Family
ID=9791318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB518624A Expired GB234553A (en) | 1924-02-29 | 1924-02-29 | Improvements in or relating to head-bands for telephones and like instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB234553A (en) |
-
1924
- 1924-02-29 GB GB518624A patent/GB234553A/en not_active Expired
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