GB1300939A – Magnetic phonograph pickup
– Google Patents
GB1300939A – Magnetic phonograph pickup
– Google Patents
Magnetic phonograph pickup
Info
Publication number
GB1300939A
GB1300939A
GB61293/69A
GB6129369A
GB1300939A
GB 1300939 A
GB1300939 A
GB 1300939A
GB 61293/69 A
GB61293/69 A
GB 61293/69A
GB 6129369 A
GB6129369 A
GB 6129369A
GB 1300939 A
GB1300939 A
GB 1300939A
Authority
GB
United Kingdom
Prior art keywords
magnets
pickup
magnetic
ferromagnetic
stylus
Prior art date
1968-12-16
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
Application number
GB61293/69A
Inventor
Hugo Westerkamp
Robert Dubois
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OSKAR HUBER
HUBER AND CO
Original Assignee
OSKAR HUBER
HUBER AND CO
Priority date (The priority date 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 date listed.)
1968-12-16
Filing date
1969-12-16
Publication date
1972-12-29
1968-12-16
Priority claimed from CH1871868A
external-priority
patent/CH506928A/en
1969-11-13
Priority claimed from CH1692269A
external-priority
patent/CH517426A/en
1969-12-16
Application filed by OSKAR HUBER, HUBER AND CO
filed
Critical
OSKAR HUBER
1972-12-29
Publication of GB1300939A
publication
Critical
patent/GB1300939A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
230000005291
magnetic effect
Effects
0.000
title
abstract
5
230000005294
ferromagnetic effect
Effects
0.000
abstract
4
230000004048
modification
Effects
0.000
abstract
3
238000012986
modification
Methods
0.000
abstract
3
241001422033
Thestylus
Species
0.000
abstract
2
229910001369
Brass
Inorganic materials
0.000
abstract
1
239000004411
aluminium
Substances
0.000
abstract
1
XAGFODPZIPBFFR-UHFFFAOYSA-N
aluminium
Chemical compound
[Al]
XAGFODPZIPBFFR-UHFFFAOYSA-N
0.000
abstract
1
229910052782
aluminium
Inorganic materials
0.000
abstract
1
239000010951
brass
Substances
0.000
abstract
1
230000005284
excitation
Effects
0.000
abstract
1
239000000463
material
Substances
0.000
abstract
1
239000004033
plastic
Substances
0.000
abstract
1
229920003023
plastic
Polymers
0.000
abstract
1
229920003002
synthetic resin
Polymers
0.000
abstract
1
239000000057
synthetic resin
Substances
0.000
abstract
1
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
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
Abstract
1300939 Pickup O HUBER [trading as HUBER & CO] 16 Dec 1969 [16 Dec 1968 13 Nov 1969] 61293/69 Heading H4J A magnetic pickup has a ferromagnetic element 8 (Fig. 4) operatively connected with a stylus 11. Two or more magnets 3 have similar magnet poles turned toward the element 8. At least one coil 18, 19 (Fig. 2) is mounted for excitation by a magnetic field induced in the element 8 by the magnets 3, then at least one coil 18, 19 being excited upon vibration of the element 8. As described, the pickup is stereophonic and the magnets 3 are embedded in a synthetic resin block 2 having a channel 4 the inner end of which is V-shaped. A brass sleeve 6 of square cross-section is rigidly held in the block 2. Two magnets 3 are on opposite sides of a plane of symmetry S. A rubber washer 7 resiliently secures the element 8. An S-shaped aluminium tube 9 fits on to element 8 and has a flattened end which receives the stylus 11. Non-magnetic wire 12 holds element 8 to sleeve 6. U-shaped magnetic strips 14, 15 each provide a pair of pole pieces 16, 17 and each is encircled by a coil 18, 19. The ends of the pole pices 16, 17 define a square cross-section. A housing 20 provides a magnetic return path for the magnets 3. In a modification a third magnet (3a) Fig. 6 (not shown) is perpendicular to the magnets 3. All the magnets have like poles directed to, and adjacent, the element 8. In another embodiment (Figs. 7, 8, not shown) two long magnets (3b) are at an angle of 30 degrees to the plane of symmetry of the pickup. The ferromagnetic element (8b) is formed of two parallel ferromagnetic strips (25). Another arrangement has a removable stylus assembly 1c (Fig. 9) with two magnets each having a bevelled corner (Fig. 10, not shown) adjacent the element 8. A housing 26 is formed of two members 27, 28 of plastics material held together by pins 29. A modification (Figs. 13, 14, not shown) of the embodiment of Fig. 9 has a pair of elongate magnets (3d) extending at an angle of 30 degrees to the plane of symmetry. In another modification of Fig. 9 (Figs. 15 to 18, not shown) cylindrical magnets (3e) are embedded in the two-part housing (37). Ferromagnetic cylinders (39) in the stylus assembly serve as pole pieces to focus the south poles of the magnets (3e) on the element (8). Reference has been directed by the Comptroller to Specification 897,323.
GB61293/69A
1968-12-16
1969-12-16
Magnetic phonograph pickup
Expired
GB1300939A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
CH1871868A
CH506928A
(en)
1968-12-16
1968-12-16
Exchangeable needle carrier for a sound reproduction head
CH1692269A
CH517426A
(en)
1969-11-13
1969-11-13
Electromagnetic sound reproduction head with an exchangeable needle carrier
Publications (1)
Publication Number
Publication Date
GB1300939A
true
GB1300939A
(en)
1972-12-29
Family
ID=25718691
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB61293/69A
Expired
GB1300939A
(en)
1968-12-16
1969-12-16
Magnetic phonograph pickup
Country Status (4)
Country
Link
US
(1)
US3641284A
(en)
DE
(1)
DE1960545A1
(en)
FR
(1)
FR2026290A1
(en)
GB
(1)
GB1300939A
(en)
Families Citing this family (17)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1299177B
(en)
*
1967-12-22
1969-07-10
Suspa Federungstech
Hydraulic two-chamber damper
US3694586A
(en)
*
1969-11-03
1972-09-26
Joseph F Grado
Toroidal armature stereophonic pickup
US3846592A
(en)
*
1973-03-29
1974-11-05
W Stanton
Phonograph pickup cartridge for four channel recordings
JPS5554809Y2
(en)
*
1973-05-15
1980-12-18
AT341798B
(en)
*
1974-06-20
1978-02-27
Akg Akustische Kino Geraete
ELASTIC MOUNTING FOR CARTRIDGE NEEDLES
US4161631A
(en)
*
1974-12-13
1979-07-17
Nippon Columbia Kabushikikaisha
Pickup cartridge
US4072823A
(en)
*
1975-06-06
1978-02-07
Kabushiki Kaisha Mitachi Onkyo Seisakusho
Moving magnet pickup cartridge
US4009885A
(en)
*
1975-09-08
1977-03-01
Sonic Research Inc.
Stereo phonograph pick-up cartridge
JPS5345502A
(en)
*
1976-10-06
1978-04-24
Nagaoka Kk
Record stylus
US4140321A
(en)
*
1978-04-04
1979-02-20
Pickering & Company, Inc.
Phonograph cartridge replaceable stylus assembly
US4173348A
(en)
*
1978-04-20
1979-11-06
Rca Corporation
Grooved record playback system
DE2941036C2
(en)
*
1979-10-10
1986-09-11
Boge Gmbh, 5208 Eitorf
Oil-filled twin-tube vibration damper
DE3011135C2
(en)
*
1980-03-22
1983-12-22
Goetze Ag, 5093 Burscheid
Lip seal
DE3131262A1
(en)
*
1981-08-07
1983-02-24
Fichtel & Sachs Ag, 8720 Schweinfurt
HYDROPNEUMATIC TWO-TUBE VIBRATION DAMPER WITH TEMPERATURE COMPENSATION OF THE DAMPING FORCE
DE4227848B4
(en)
*
1991-11-28
2009-05-07
Robert Bosch Gmbh
Component carrier and method for holding a formed of a ferromagnetic material component
US5727662A
(en)
*
1996-02-05
1998-03-17
Monroe Auto Equipment Company
Thermal expansion compensation device for shock absorbers
DE19608771A1
(en)
*
1996-03-07
1997-04-24
Fichtel & Sachs Ag
Guide for piston and cylinder unit, especially for shock absorbers
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3294405A
(en)
*
1963-12-11
1966-12-27
Audio Dynamics Corp
Phonograph pick-up
US3441688A
(en)
*
1966-04-18
1969-04-29
Empire Scient Corp
Electromagnetic phonograph pickup cartridges with zero balanced armature flux
US3538266A
(en)
*
1967-10-06
1970-11-03
Micro Seiki Co Ltd
Magnetic pickup with inducing magnet axially aligned with the armature
1969
1969-12-03
DE
DE19691960545
patent/DE1960545A1/en
active
Pending
1969-12-15
US
US885391A
patent/US3641284A/en
not_active
Expired – Lifetime
1969-12-16
FR
FR6943588A
patent/FR2026290A1/fr
not_active
Withdrawn
1969-12-16
GB
GB61293/69A
patent/GB1300939A/en
not_active
Expired
Also Published As
Publication number
Publication date
FR2026290A1
(en)
1970-09-18
US3641284A
(en)
1972-02-08
DE1960545A1
(en)
1970-06-25
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Legal Events
Date
Code
Title
Description
1973-05-09
PS
Patent sealed [section 19, patents act 1949]
1978-07-19
PCNP
Patent ceased through non-payment of renewal fee
