GB390974A - Improvements in and relating to loud speakers - Google Patents
Improvements in and relating to loud speakersInfo
- Publication number
- GB390974A GB390974A GB1745732A GB1745732A GB390974A GB 390974 A GB390974 A GB 390974A GB 1745732 A GB1745732 A GB 1745732A GB 1745732 A GB1745732 A GB 1745732A GB 390974 A GB390974 A GB 390974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loud
- whilst
- screw
- armature
- parts
- 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)
- Crystals, And After-Treatments Of Crystals (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Eye Examination Apparatus (AREA)
Abstract
390,974. Loud-speakers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Ideal Werke Akt.-Ges. f³r Drahtlose Telephonie; 97, Grosse Leegestrasse, Hohensch÷nhausen, Berlin.) June 20, 1932, No. 17457. [Class 40 (iv).] A loud-speaker comprises an electromagnetic unit consisting of two cup-like parts a, c, the part a having one end of an armature b secured thereto whilst the part c carries the magnets d. The part a is also provided with two legs, one of which is shown at h, adapted to be placed on a table or other object capable of oscillating whilst the free end of the armature carries a third leg i adapted to make contact with the table &c. The parts a, c are formed with a pin and slot connection g<1>, g2 and are relatively adjustable by means of a screw f and spring k. The screw f is provided with a knob f<1> and pointer f<2>.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1745732A GB390974A (en) | 1932-06-20 | 1932-06-20 | Improvements in and relating to loud speakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1745732A GB390974A (en) | 1932-06-20 | 1932-06-20 | Improvements in and relating to loud speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB390974A true GB390974A (en) | 1933-04-20 |
Family
ID=10095505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1745732A Expired GB390974A (en) | 1932-06-20 | 1932-06-20 | Improvements in and relating to loud speakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB390974A (en) |
-
1932
- 1932-06-20 GB GB1745732A patent/GB390974A/en not_active Expired
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