GB423406A - Improvements in and relating to sound reproducing devices - Google Patents
Improvements in and relating to sound reproducing devicesInfo
- Publication number
- GB423406A GB423406A GB1358934A GB1358934A GB423406A GB 423406 A GB423406 A GB 423406A GB 1358934 A GB1358934 A GB 1358934A GB 1358934 A GB1358934 A GB 1358934A GB 423406 A GB423406 A GB 423406A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mass
- spring
- sound
- reproducer
- engaging
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
423,406. Gramophones. GOLDSCHMIDT, R., 57, Westbourne Terrace, Paddington, London. May 4, 1934, No. 13589. [Class 40 (ii)] In a sound-reproducing device having a stylus engaging the sound groove of a record, the stylus bar 3 is pivoted in a fork 5 forming an extension of a mass 6 which is yieldingly mounted on the sound reproducer as by means of a leaf spring 8 of general #-shape secured by a screw 11 engaging a threaded member 10 which clamps the spring through pressure transmitting members 9. The mass 6 may be of metal or thermo-plastic material and the ends of the spring 8 may be moulded into the mass. A strip of lead, &c., 12 is interposed between the spring and the body of the reproducer. The mass 6 is formed with a recess forming a socket to receive the rubber-covered shank 17 of an additional mass 16 carrying an offset resilient blade 15 supporting a further mass 20. Additional masses resiliently supported by members offset from the mass centre may be provided. The spring arms 8 are slightly inclined to the vertical. Specification 412,194 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1358934A GB423406A (en) | 1934-05-04 | 1934-05-04 | Improvements in and relating to sound reproducing devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1358934A GB423406A (en) | 1934-05-04 | 1934-05-04 | Improvements in and relating to sound reproducing devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB423406A true GB423406A (en) | 1935-01-31 |
Family
ID=10025720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1358934A Expired GB423406A (en) | 1934-05-04 | 1934-05-04 | Improvements in and relating to sound reproducing devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB423406A (en) |
-
1934
- 1934-05-04 GB GB1358934A patent/GB423406A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB423406A (en) | Improvements in and relating to sound reproducing devices | |
GB301158A (en) | Improvements in pick-up devices for use with gramophones and the like | |
GB1215175A (en) | Phonograph pickup | |
GB387974A (en) | Improvements in electrical reproducers for disc records | |
GB789367A (en) | Improvements in or relating to electro-mechanical transducers for use in sound recording or reproducing systems | |
US1410115A (en) | Sound reproducer | |
ES374269A1 (en) | Sound reproducing apparatus | |
US1393106A (en) | Sound-reproducer for phonographs | |
GB203424A (en) | Improvements in the diaphragms of sound recording and reproducing instruments | |
GB320973A (en) | Improvements in gramophones or disc talking machines | |
GB228400A (en) | Improved sound box for sound recording and sound reproducing apparatus | |
GB212137A (en) | Improvements in or relating to talking machines and the like | |
GB328222A (en) | Improvements in the mounting of gramophone and like tone arms | |
GB328221A (en) | Improvements relating to gramophone stylus arms | |
GB191421588A (en) | Improvements in or relating to Gramophones and the like. | |
GB316634A (en) | Improvements in gramophone and like sound boxes | |
GB602261A (en) | Phonograph pick-up device | |
GB191408706A (en) | Improvements in or relating to Sound Boxes for Sound Reproducing Machines. | |
GB276971A (en) | Improvements in and connected with the sound boxes of talking machines | |
GB340789A (en) | Improvements in and relating to sound-reproducing devices | |
GB193691A (en) | Improvements in or relating to sound boxes for gramophones and similar instruments | |
GB251116A (en) | Loud speaking telephone | |
GB131795A (en) | Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines. | |
GB191317800A (en) | Improvements in and connected with Sound Controllers for Sound Boxes of Gramophones and the like. | |
GB538527A (en) | Improvements in apparatus for recording and reproducing sound |