GB289447A - Improvements in or relating to apparatus for reproducing recorded sound - Google Patents
Improvements in or relating to apparatus for reproducing recorded soundInfo
- Publication number
- GB289447A GB289447A GB12354/28A GB1235428A GB289447A GB 289447 A GB289447 A GB 289447A GB 12354/28 A GB12354/28 A GB 12354/28A GB 1235428 A GB1235428 A GB 1235428A GB 289447 A GB289447 A GB 289447A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- record
- electric
- film
- gramophone
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/10—Apparatus capable of using record carriers defined in more than one of the sub-groups G11B25/02 - G11B25/08; Adaptor devices therefor
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
289,447. K³chenmeister, H. J. Nov. 2. 1926, [Convention date]. Divided on 280,188. Multiple machines; optical apparatus; electric <t);d magnetic machines; optical or magnetic soundreproducing apparatus associated with automatic musical instruments.-An apparatus for reproducing sound from a photographic film record, or from a magnetic band or wire record, is combined with a gramophone or phonograph of ordinary type, or with a mechanical musical instrument, such as an automatic piano, so that the two machines or apparatus comprised in the combination can be operated simultaneously or individually. The Figure shows a gramophone (which is of the kind having two sound-boxes o and tone arms n) combined with photo-electric sound-reproducing apparatus. The photographic sound-record film d has central perforations which engage with teeth on the periphery of the turntable c, and passes from a reel f to a reel g driven through a slip clutch r by a motor h, which also drives the turntable. The film passes through an apparatus h comprising a source of light and one or more photo-electric cells i, whereby current fluctuations corresponding to the recorded sound are set up, and, by means of an amplifier k, operate loudspeakers l, L<1>. By using a switch p, telephonic receivers (which, when required, are substituted for the ordinary phonographic sound-boxes o) may be connected in circuit instead of the loudspeakers, so that in this case the sound reproduced from the film record is emitted from the horns m. The switch p may be so constructed as to cause the loud-speakers !, l<1> and the telephonic sound-boxes to work simultaneously. According to the Specification as open to inspection under Sect. 91 (3) (a) electric pick-up devices, connected to the amplifier, can be used on the gramophone. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE289447X | 1926-11-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB289447A true GB289447A (en) | 1929-03-25 |
Family
ID=6059826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12354/28A Expired GB289447A (en) | 1926-11-02 | 1927-10-25 | Improvements in or relating to apparatus for reproducing recorded sound |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR643054A (en) |
GB (1) | GB289447A (en) |
NL (1) | NL34674C (en) |
-
0
- NL NL34674D patent/NL34674C/xx active
-
1927
- 1927-10-25 GB GB12354/28A patent/GB289447A/en not_active Expired
- 1927-10-27 FR FR643054D patent/FR643054A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL34674C (en) | |
FR643054A (en) | 1928-09-10 |
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