GB603908A - Phonograph pickup - Google Patents
Phonograph pickupInfo
- Publication number
- GB603908A GB603908A GB29329/45A GB2932945A GB603908A GB 603908 A GB603908 A GB 603908A GB 29329/45 A GB29329/45 A GB 29329/45A GB 2932945 A GB2932945 A GB 2932945A GB 603908 A GB603908 A GB 603908A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strips
- playing
- dale
- hill
- tension
- 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
- H04R21/00—Variable-resistance transducers
- H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrophonic Musical Instruments (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
603,908. Gramophone pick - ups. FARNSWORTH TELEVISION & RADIO CORPORATION. Nov. 5, 1945, No. 29329. Convention date, July 5. [Class 40 (iv)] A variable-resistance type of gramophone pick-up suitable for either " hill and dale" or " transverse " recordings, consists of a member 11 having an extended flexible portion 15, which carries at its end a stylus, and which has four inlaid strips 20, 21, 22, 23 of electrically resistive material which varies in resistance during compression or tension. During playing of a " hill and dale " record the strips 20, 21 suffer compression at the same moment as strips 22, 23 are in tension, while during playing of a " transverse " record strips 20, 22 are compressed when strips 21, 23 are in tension. The stylus-end of the strips 20, 21, 22, 23 are connected together, and the opposite ends are connected to potentiometers as shown in Fig. 6. The strips 20, 21, 22, 23 are shown in the same relative positions as shown in Fig. 3. When playing " hill and dale" records potentiometercontrols 65 and 79 are set to the extreme left and right positions respectively, i.e. resistances 60 and 62 short-circuited, while potentiometercontrols 80 and 66 are used for controlling volume. When playing " transverse " records, the potentiometer-controls 80 and 66 are set - to the extreme up and down positions respectively, i.e. resistances 63 and 61 short-circuited, while potentiometer-controls 65 and 79 are used for controlling volume.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US603362A US2476848A (en) | 1945-07-05 | 1945-07-05 | Variable resistance phonograph pickup and system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB603908A true GB603908A (en) | 1948-06-24 |
Family
ID=24415108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29329/45A Expired GB603908A (en) | 1945-07-05 | 1945-11-05 | Phonograph pickup |
Country Status (2)
Country | Link |
---|---|
US (1) | US2476848A (en) |
GB (1) | GB603908A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572426A (en) * | 1947-06-28 | 1951-10-23 | Rca Corp | Means for reducing static electricity charges in nonelectroconductive styli |
US2944117A (en) * | 1955-06-20 | 1960-07-05 | Erie Resistor Corp | Bender type piezoelectric transducer |
NL236717A (en) * | 1958-03-03 | |||
US3017467A (en) * | 1959-08-27 | 1962-01-16 | Astatic Corp | Method of assembly of phonograph pickup cartridges |
US3148356A (en) * | 1959-09-14 | 1964-09-08 | Jr George A Hedden | Printed circuit connector |
US3378648A (en) * | 1964-12-31 | 1968-04-16 | Gen Electric | Doped piezoresistive phonograph pickup |
NL7511413A (en) * | 1975-09-29 | 1977-03-31 | Philips Nv | TONEARM. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1506224A (en) * | 1921-09-02 | 1924-08-26 | Becker Leon Alexander De | Carburetor for internal-combustion engines |
US1855151A (en) * | 1930-01-25 | 1932-04-19 | Jones W Bartlett | Electrical phonograph pick-up and apparatus |
US2380514A (en) * | 1940-06-12 | 1945-07-31 | Germeshausen Kenneth Joseph | Vibration-translating device |
US2373676A (en) * | 1941-07-30 | 1945-04-17 | Kenneth J Germeshausen | Reproducer |
-
1945
- 1945-07-05 US US603362A patent/US2476848A/en not_active Expired - Lifetime
- 1945-11-05 GB GB29329/45A patent/GB603908A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2476848A (en) | 1949-07-19 |
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