GB368557A - Improvements in apparatus for reproducing sound recorded on films - Google Patents
Improvements in apparatus for reproducing sound recorded on filmsInfo
- Publication number
- GB368557A GB368557A GB10742/31A GB1074231A GB368557A GB 368557 A GB368557 A GB 368557A GB 10742/31 A GB10742/31 A GB 10742/31A GB 1074231 A GB1074231 A GB 1074231A GB 368557 A GB368557 A GB 368557A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- film
- prism
- extension
- lens system
- 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
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
- Projection Apparatus (AREA)
Abstract
368,557. Periscopes ; kinematograph apparatus. MIHALY, D. VON, 13/B, Hildegardstrasse, Wilmersdorf, Berlin. April 11, 1931, No. 10742. Convention date, May 1, 1930. Addition to 351,002. [Class 97 (i).] In apparatus according to the parent Specification, the beam of light passing through the sound record is projected to the screen and light-sensitive cell by means of a periscope. The periscope comprises a prism 5, a lens system 9 arranged in a tube 8, and a prism or mirror 11 disposed. in an extension 22 of the tube. The extension 22 is rotatable, and the prism 11 may be rocked about an axis 12 by a set-screw 14. The lens system 9 has a focusing adjustment 10. The film is guided over the tube 8 between two rotatable rings 6, 7 mounted on ball or roller bearings. The tube 8 may be mounted on a slotted plate 17 by which it may be secured to the base of a kinematograph projector. The film passing from the intermittent sprocket &c. forms a loop 4<1>, Fig. 2, and passes between rollers 24, 25 and over the tube 8. If the film should break, a lever 31 having a roller 32 supported on the film is drawn downwards by a spring 33 so as to open a mercury switch 35 in the circuit of the sound-recording lamp 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE368557X | 1930-05-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB368557A true GB368557A (en) | 1932-03-10 |
Family
ID=6318090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10742/31A Expired GB368557A (en) | 1930-05-01 | 1931-04-11 | Improvements in apparatus for reproducing sound recorded on films |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB368557A (en) |
-
1931
- 1931-04-11 GB GB10742/31A patent/GB368557A/en not_active Expired
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