GB304858A - Improvements in or relating to devices for converting mechanical vibrations into electrical impulses and vice versa, particularly applicable to sound reproducing apparatus - Google Patents
Improvements in or relating to devices for converting mechanical vibrations into electrical impulses and vice versa, particularly applicable to sound reproducing apparatusInfo
- Publication number
- GB304858A GB304858A GB2975927A GB2975927A GB304858A GB 304858 A GB304858 A GB 304858A GB 2975927 A GB2975927 A GB 2975927A GB 2975927 A GB2975927 A GB 2975927A GB 304858 A GB304858 A GB 304858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- stylus
- blank
- relating
- reproducing
- 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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Moving Of Heads (AREA)
Abstract
304,858. Sayer, D. W., and Electramonic Co., Ltd. Nov. 7, 1927. Feed-mechanism.-An electrical device for reproducing recorded sound or like vibrations or an electric recording device having a stylus acting on a guiding groove on a blank, is fed across the record or blank by means of an auxiliary stylus engaging in the groove in which the reproducing or recording stylus acts. In the construction shown, a permanent magnet 1, with windings 2, has an armature 6 mounted between the poles 3, the armature being supported at its upper end by opposed springs 7 which are adjustable by means of a grub screw 9. A frame 4 mounted on the magnet is provided with a socket 5 for a needle or sapphire, which engages the same groove as a needle carried by the armature in a socket 13, and serves to feed the whole device across the record or blank, and to relieve the load on the reproducing or recording stylus. The armature and pole-pieces are of V cross-section, and damping material such as tissue paper or rubber is packed between the armature and the pole-pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2975927A GB304858A (en) | 1927-11-07 | 1927-11-07 | Improvements in or relating to devices for converting mechanical vibrations into electrical impulses and vice versa, particularly applicable to sound reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2975927A GB304858A (en) | 1927-11-07 | 1927-11-07 | Improvements in or relating to devices for converting mechanical vibrations into electrical impulses and vice versa, particularly applicable to sound reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB304858A true GB304858A (en) | 1929-01-31 |
Family
ID=10296716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2975927A Expired GB304858A (en) | 1927-11-07 | 1927-11-07 | Improvements in or relating to devices for converting mechanical vibrations into electrical impulses and vice versa, particularly applicable to sound reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB304858A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE905678C (en) * | 1937-03-26 | 1954-03-04 | Siemens Ag | Protective device for sound pens on pickups |
-
1927
- 1927-11-07 GB GB2975927A patent/GB304858A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE905678C (en) * | 1937-03-26 | 1954-03-04 | Siemens Ag | Protective device for sound pens on pickups |
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