GB364099A - Improvements in, or relating to, loud speaker units or like sound reproducing apparatus - Google Patents
Improvements in, or relating to, loud speaker units or like sound reproducing apparatusInfo
- Publication number
- GB364099A GB364099A GB2912930A GB2912930A GB364099A GB 364099 A GB364099 A GB 364099A GB 2912930 A GB2912930 A GB 2912930A GB 2912930 A GB2912930 A GB 2912930A GB 364099 A GB364099 A GB 364099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pillars
- magnet
- reed
- mountings
- rollers
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
364,099. Loud-speakers. COLASSI, W. L., 26, Burnham Court, Bayswater, London. Sept. 29, 1930, No. 29129. [Class 40 (iv).] Relates to a loudspeaker unit of the type having a reed formed with an armature portion and radiating supporting arms adapted to be tensioned, the armature portion being arranged in operative relation to a magnet polepiece or polepieces, with or without means for adjusting the relative position of the armature and magnet. According to the invention, a compression member is inserted between the mountings of the supporting arms so as to urge the mountings in the direction in which the tension is to be applied. The mountings may comprise pillars, parallel or inclined to one another, and wedging members in the form of rollers may be inserted between the magnets and pillars whereby on movement of the magnet the tension remains constant or is varied. Fig. 1 shows such a construction in which a is the reed, b the pillars mounted on the base c, d is the magnet and e the rollers. As shown, the pillars are recessed at f to limit the extreme movement of the rollers, the walls of the recesses being arranged parallel with the walls of the pillars so that adjustment of the magnet to. and from the reed will not affect the tension on the supporting arms. Fig. 4 shows a modification in which the tensioning means comprises a bar g, one end of which is hollowed at h to seat against one of the pillars whilst the other end is drilled at j to receive the reduced end k of a threaded pin m. The thread of the pin m engages a threaded hole in a member n which is shaped to seat firmly against the other pillar, rotation of the pin m increasing or decreasing the distance between the shaped ends. Each of these ends may be provided with a lug p adapted to pass through apertures in the radiating arms so that the pillars are engaged by the device both above and below the reed. The bar g is provided with an aperture q for the passage of the driving rod connecting the reed to the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2912930A GB364099A (en) | 1930-09-29 | 1930-09-29 | Improvements in, or relating to, loud speaker units or like sound reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2912930A GB364099A (en) | 1930-09-29 | 1930-09-29 | Improvements in, or relating to, loud speaker units or like sound reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB364099A true GB364099A (en) | 1931-12-29 |
Family
ID=10286616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2912930A Expired GB364099A (en) | 1930-09-29 | 1930-09-29 | Improvements in, or relating to, loud speaker units or like sound reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB364099A (en) |
-
1930
- 1930-09-29 GB GB2912930A patent/GB364099A/en not_active Expired
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