GB1283404A - Stereophonic pickup cartridge - Google Patents
Stereophonic pickup cartridgeInfo
- Publication number
- GB1283404A GB1283404A GB40538/69A GB4053869A GB1283404A GB 1283404 A GB1283404 A GB 1283404A GB 40538/69 A GB40538/69 A GB 40538/69A GB 4053869 A GB4053869 A GB 4053869A GB 1283404 A GB1283404 A GB 1283404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- stylus
- stylus arm
- armature
- polepieces
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/16—Mounting or connecting stylus to transducer with or without damping means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- 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
- H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Knitting Machines (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
1283404 Stereophonic pick-ups AUDIOTECHNICA KK [trading as AUDIO-TECHNICA CORP] 13 Aug 1969 [14 Aug 1968 3 Feb 1969] 40538/69 Heading H4J A stereophonic pick-up cartridge of the moving armature induced magnet type has two armatures 9, 10, (Fig. 1), carried at the end of a stylus arm 12 remote from a stylus 11 to vibrate therewith, and a permanent magnet 16 for magnetization of the armatures 9, 10. Polepieces 1, 2, 3, 4 have their ends arranged, in use, at an angle of 45 degrees to the horizontal and are threaded through coils 5, 6, 7, 8. Movement of armature 9 along its longitudinal direction provides a series additive energization of coils 5, 6 and movement of armature 10 along its longitudinal direction provides a series additive energization of coils 7, 8. The stylus arm 12 is carried by a holder 14, an elastomeric bearing 15 of butyl rubber being interposed between the holder 14 and the stylus arm 12. A flexible support line (not shown), e.g. of wire, is connected to one end of the stylus arm 12 and extends rearwardly to urge stylus arm 12 against the bearing 15. In one alternative arrangement the permanent magnet 16 is placed rearwardly of the armatures (Fig. 3, not shown) a piece of magnetic material (17) in the holder 14 passing magnetic flux from the magnet (16) to the armatures 9, 10. Alternatively, a magnet (16), Fig. 4 (not shown), is located between each pair of polepieces, a piece of magnetic material (17) extending form the magnets (16) towards the respective armature. Another embodiment has a permanent magnet (18), Fig. 5, not shown), between each pair of polepieces, as well as the magnet 16 as in Fig. 1. Where a magnet 16 is mounted forwardly of the air gaps there may be an auxiliary tubular armature (20), Fig. 6 (not shown), around the stylus arm 12. A pick-up cartridge (Fig. 8) comprises a shielding casing 37 having two upper mounting flanges 32. A removable stylus assembly comprises a base 30 (Fig. 9) having two side walls 63, 64. The polepieces, apart from the air gap portions, are embedded in a resin moulding 52 which has a front end 53, and a rear end 54 shaped to engage a groove 55 in a terminal board 48. A plug 59 on the stylus assembly engages in a receptacle 58 in the moulding 52 and an elastomer lock ring 60 engages a groove 61 in the plug 59. A permanent magnet 47 is embedded in the moulded front end 53. Another magnet, such as magnet 14 is embedded between each pair of polepieces. The stylus arm 36 carries an auxiliary armature 38. Into the rear end of stylus arm 36 is force fitted a pipe 66 (Fig. 10) to which a wire 67 is bonded. This extends rearwardly and is fixed to another pipe 68, the clearance between pipes 66 and 68 defining the centre of vibration. Adjustment of the tension of the wire 67 and of the damping provided by elastomeric bearing 42 is effected after loosening a screw 72. An alternative stylus sub-assembly, Fig. 11 (not shown), has an armature securing member (39) integrally moulded with an intermediate reduced portion (67) and a rear mounting member (69). The armatures 41 and stylus arm 36 are embedded in the securing member (39). Member (39) may be formed with a projection (73) of which extends into the stylus arm (36).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5740868 | 1968-08-14 | ||
JP729069A JPS5518961B1 (en) | 1969-02-03 | 1969-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1283404A true GB1283404A (en) | 1972-07-26 |
Family
ID=26341567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40538/69A Expired GB1283404A (en) | 1968-08-14 | 1969-08-13 | Stereophonic pickup cartridge |
Country Status (7)
Country | Link |
---|---|
US (1) | US3761647A (en) |
CH (1) | CH505437A (en) |
DE (1) | DE1941569C3 (en) |
FR (1) | FR2030037A1 (en) |
GB (1) | GB1283404A (en) |
NL (1) | NL6912364A (en) |
SE (1) | SE347636B (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4075418A (en) * | 1968-08-14 | 1978-02-21 | Kabushiki Kaisha Audio-Technica | Stereophonic pickup cartridge |
US3904837A (en) * | 1972-10-19 | 1975-09-09 | Hitachi Ltd | Magnetic pickup cartridge |
CH567856A5 (en) * | 1973-05-29 | 1975-10-15 | Huber & Co | |
JPS5122362B2 (en) * | 1973-11-27 | 1976-07-09 | ||
JPS5228684B2 (en) * | 1974-03-19 | 1977-07-28 | ||
NL7404359A (en) * | 1974-04-01 | 1975-10-03 | Philips Nv | GROOVE TASTER AND / OR CUTTER. |
JPS5130701A (en) | 1974-09-07 | 1976-03-16 | Nippon Atsudenki Kk | SUTEREOYOPITSUKUATSUPU |
US4037060A (en) * | 1975-07-09 | 1977-07-19 | Nippon Atsudenki Kabushiki Kaisha T/A Japan Piezo Co., Ltd. | Stereophonic pickup cartridge |
JPS5225501U (en) * | 1975-08-09 | 1977-02-23 | ||
JPS5345502A (en) * | 1976-10-06 | 1978-04-24 | Nagaoka Kk | Record stylus |
JPS5377601A (en) * | 1976-12-21 | 1978-07-10 | Audio Technica Kk | Transducer |
DE2810459C3 (en) * | 1977-03-14 | 1986-11-13 | Sergej Valentinovič Čeljabinsk Burundukov | Electrodynamic converter of mechanical vibrations into electrical signals and vice versa, stereo and monophonic sound heads and electrodynamic microphone |
JPS5448503A (en) * | 1977-09-01 | 1979-04-17 | Matsushita Electric Ind Co Ltd | Moving coil type pickup cartridge |
US4272652A (en) * | 1978-05-25 | 1981-06-09 | Nippon Atsudenki K.K. | Moving coil type stereophonic pickup cartridge |
CA1139233A (en) * | 1979-06-22 | 1983-01-11 | Ryuichi Uchida | Moving coil type stereophonic pickup cartridge |
DE3071154D1 (en) * | 1979-12-19 | 1985-11-07 | Matsushita Electric Ind Co Ltd | Electromagnetic pickup cartridge |
JPS5844896A (en) * | 1981-09-10 | 1983-03-15 | Sony Corp | Moving coil type cartridge |
JPS59146403A (en) * | 1984-02-06 | 1984-08-22 | Matsushita Electric Ind Co Ltd | Pickup cartridge |
DE3602832A1 (en) * | 1986-01-30 | 1987-08-06 | Devender Dr Dhingra | Dust filter device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA718099A (en) * | 1965-09-14 | N.V. Philips Gloeilampenfabrieken | Converting device for recording or scanning groove-like record tracks | |
US1663884A (en) * | 1924-05-05 | 1928-03-27 | Western Electric Co | Device for the transmission of vibratory energy |
US2864897A (en) * | 1958-02-17 | 1958-12-16 | Hoffman Electronics Corp | Universal phonograph pickup head or the like |
GB872915A (en) * | 1958-07-28 | 1961-07-12 | Garrard Eng & Mfg Co Ltd | Improvements in or relating to gramophone pick-ups |
GB930367A (en) * | 1958-11-10 | 1963-07-03 | Bang & Olufsen Produktionssels | Stereophonic pick-up having a single stylus |
US3230317A (en) * | 1960-12-08 | 1966-01-18 | Telefunken Ag | Flexible coupling arrangement for phonograph pickup |
US3056861A (en) * | 1959-09-24 | 1962-10-02 | Electro Voice | Phonograph pickup |
DK110237C (en) * | 1960-10-22 | 1973-01-22 | Fonofilm Ind As | Stereophonic electrodynamic sound recorder. |
US3294405A (en) * | 1963-12-11 | 1966-12-27 | Audio Dynamics Corp | Phonograph pick-up |
US3444335A (en) * | 1965-01-04 | 1969-05-13 | John Walton | Phonograph pick-up with de-coupling of the stylus mass |
US3526728A (en) * | 1966-10-20 | 1970-09-01 | Matsushita Electric Ind Co Ltd | Variable reluctance type pickup cartridge |
-
1969
- 1969-08-13 GB GB40538/69A patent/GB1283404A/en not_active Expired
- 1969-08-13 SE SE11291/69A patent/SE347636B/xx unknown
- 1969-08-13 US US00849767A patent/US3761647A/en not_active Expired - Lifetime
- 1969-08-14 CH CH1236969A patent/CH505437A/en not_active IP Right Cessation
- 1969-08-14 NL NL6912364A patent/NL6912364A/xx unknown
- 1969-08-14 DE DE1941569A patent/DE1941569C3/en not_active Expired
- 1969-08-14 FR FR6928056A patent/FR2030037A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
CH505437A (en) | 1971-03-31 |
NL6912364A (en) | 1970-02-17 |
US3761647A (en) | 1973-09-25 |
FR2030037A1 (en) | 1970-10-30 |
DE1941569C3 (en) | 1975-09-25 |
DE1941569B2 (en) | 1975-01-09 |
DE1941569A1 (en) | 1970-03-26 |
SE347636B (en) | 1972-08-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |