GB700155A - Phonographic pick-up - Google Patents
Phonographic pick-upInfo
- Publication number
- GB700155A GB700155A GB14902/52A GB1490252A GB700155A GB 700155 A GB700155 A GB 700155A GB 14902/52 A GB14902/52 A GB 14902/52A GB 1490252 A GB1490252 A GB 1490252A GB 700155 A GB700155 A GB 700155A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- pick
- coil
- bracket
- pieces
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
700,155. Gramophone pick-ups. FONOFILM INDUSTRI AKTIESELSKAB. June 13,1952 [June 15, 1951], No. 14902/52. Class 40 (4). In a moving-coil pick-up, a ferromagnetic armature 7, Fig. 6, is pivotally mounted on a bracket 20, Fig. 4, and carries a coil 14 and a resilient stylus arm 13, the armature and the bracket constituting a replaceable movement assembly which is readily detached from the pick-up body by a sliding movement. As shown in Figs. 2 and 3, magnetic pole pieces 3, 4 are moulded in a plastic pick-up body 5 which incorporates guide grooves 22, 21 for end pieces 8, 9 and the stem of the bracket respectively. The grooves determine the correct location of the armature in the magnetic air gap and enable the movement assembly to be replaced without risk of coil damage by the pole pieces. The coil is arranged on the armature as shown in Fig. 6 and is secured by an adhesive such as shellac. Pivotal mounting of the armature is effected by pressing the armature ends into keyhole-shaped openings 11 in the bracket and pieces 8 and 9, Fig. 5, with rubber strips 23 interposed. The rubber strips may alternatively be replaced by moulded rubber sleeves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK700155X | 1951-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB700155A true GB700155A (en) | 1953-11-25 |
Family
ID=8152333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14902/52A Expired GB700155A (en) | 1951-06-15 | 1952-06-13 | Phonographic pick-up |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH314693A (en) |
| DE (1) | DE873757C (en) |
| GB (1) | GB700155A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE948820C (en) * | 1950-12-28 | 1956-09-06 | Siemens Ag | Device for the treatment of liquids or gases with mechanical vibrations in a continuous process |
| US2883478A (en) * | 1955-03-18 | 1959-04-21 | Electro Sonic Lab Inc | Moving armature phonograph pickups |
-
1951
- 1951-09-09 DE DEF7120A patent/DE873757C/en not_active Expired
-
1952
- 1952-06-13 GB GB14902/52A patent/GB700155A/en not_active Expired
- 1952-12-20 CH CH314693D patent/CH314693A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE873757C (en) | 1953-04-16 |
| CH314693A (en) | 1956-06-30 |
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