GB222208A - An improved loud speaker for wireless apparatus - Google Patents
An improved loud speaker for wireless apparatusInfo
- Publication number
- GB222208A GB222208A GB1668323A GB1668323A GB222208A GB 222208 A GB222208 A GB 222208A GB 1668323 A GB1668323 A GB 1668323A GB 1668323 A GB1668323 A GB 1668323A GB 222208 A GB222208 A GB 222208A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loud speaker
- connecting links
- wireless apparatus
- pieces
- laminated
- 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
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
- H04R13/02—Telephone receivers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
222,208. Parker, H. W. June 27, 1923. Telephones.-The magnet system of a telephone receiver comprises permanent magnets d, laminated connecting links b<1> and laminated pole-pieces b. As shown, two bar magnets d of rectangular section have the ends bevelled to fit notches in the connecting links b<1>. The L-shaped pole-pieces b and the connecting links are secured bv clamping plates a held down by screws c.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1668323A GB222208A (en) | 1923-06-27 | 1923-06-27 | An improved loud speaker for wireless apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1668323A GB222208A (en) | 1923-06-27 | 1923-06-27 | An improved loud speaker for wireless apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB222208A true GB222208A (en) | 1924-09-29 |
Family
ID=10081749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1668323A Expired GB222208A (en) | 1923-06-27 | 1923-06-27 | An improved loud speaker for wireless apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB222208A (en) |
-
1923
- 1923-06-27 GB GB1668323A patent/GB222208A/en not_active Expired
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