GB632625A - Improvements in or relating to rotatable coil holders - Google Patents
Improvements in or relating to rotatable coil holdersInfo
- Publication number
- GB632625A GB632625A GB230248A GB230248A GB632625A GB 632625 A GB632625 A GB 632625A GB 230248 A GB230248 A GB 230248A GB 230248 A GB230248 A GB 230248A GB 632625 A GB632625 A GB 632625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- coil
- apertures
- turret
- spaced
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/004—Arrangements for interchanging inductances, transformers or coils thereof
Abstract
632,625. Transformers and inductances. GENERAL ELECTRIC CO., Ltd., MERCER, E. L., and STAFFORD, L. J. Jan. 26, 1948, No. 2302. [Class 38 (ii)] [Also in Group XL (c)] A turret type coilholder for holding aerial circuit coils comprises two metallic discs 1, 2 spaced apart with the planes containing their peripheries parallel to each other and each disc has a plurality of projections, apertures or like locating means to co-operate with the coil formers 15. At least the disc 2 is of resilient material and is so displaced from the other that its resiliency allows the insertion of the coil formers 15. The disc 1 is of a dish-shape and in the flat rim portion are formed ten pairs of apertures 11 symmetrically spaced. The disc 2 has ten radial slots 7 also symmetrically-spaced; thus ten tongues 8 are formed in each of which a hole 9 and a slot 10 are cut away. The apertures 11 and the circles 9 serve to accommodate the end portions of the coil formers 15. The turret can be rotated by a shaft passing through a central hole 4 to which it is fixed by screws 6. Each coil former has four integral contact members 13 to which the coil windings are directly connected. These members 13 co-operate selectively with a set of fixed contact members in order to select a required frequency band on rotation of the turret. Each coil former 15 has an adjustable magnetic dust core 14 carried by a rod passing through an I-shape brass plate 18. Similar turrets may be used for switching other coils in radio-frequency circuits or in oscillator circuit and they may also be applied to signal generators or wavemeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB230248A GB632625A (en) | 1948-01-26 | 1948-01-26 | Improvements in or relating to rotatable coil holders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB230248A GB632625A (en) | 1948-01-26 | 1948-01-26 | Improvements in or relating to rotatable coil holders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB632625A true GB632625A (en) | 1949-11-28 |
Family
ID=9737166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB230248A Expired GB632625A (en) | 1948-01-26 | 1948-01-26 | Improvements in or relating to rotatable coil holders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB632625A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3183464A (en) * | 1959-12-21 | 1965-05-11 | Sony Corp | Tuner device for a radio or television receiving apparatus |
| US3227981A (en) * | 1963-12-30 | 1966-01-04 | Sarkes Tarzian | High frequency tuner |
-
1948
- 1948-01-26 GB GB230248A patent/GB632625A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3183464A (en) * | 1959-12-21 | 1965-05-11 | Sony Corp | Tuner device for a radio or television receiving apparatus |
| US3227981A (en) * | 1963-12-30 | 1966-01-04 | Sarkes Tarzian | High frequency tuner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB651289A (en) | Radio apparatus | |
| GB899704A (en) | Variable magnetic coupling devices | |
| GB1076365A (en) | A miniature low frequency transformer | |
| US2318271A (en) | Antenna transformer | |
| GB632625A (en) | Improvements in or relating to rotatable coil holders | |
| US2431425A (en) | Variable inductance device | |
| US2755468A (en) | Antenna combined with magnetic coupling core | |
| GB571836A (en) | Improvements in or relating to variable permeability tuning arrangements for radio or like apparatus with band-spread tuning | |
| US2353618A (en) | Damping device for electrical instruments | |
| US1945525A (en) | Frequency changing system for high frequency signaling apparatus | |
| US1353145A (en) | Device for varying electrical coupling | |
| US2958057A (en) | Rotary variable inductor and method of making the same | |
| US2201453A (en) | Variable inductor | |
| US2306213A (en) | Current responsive device | |
| US1952160A (en) | Measuring instrument | |
| US1639662A (en) | Transformer | |
| US2659057A (en) | Inductance coil | |
| GB631688A (en) | Improvements in superheterodyne radio receivers | |
| US2169257A (en) | Multifrequency signaling apparatus | |
| US2135841A (en) | High-frequency coil | |
| GB746985A (en) | Improvements relating to antenna circuit arrangements for radio receivers | |
| US2870423A (en) | Variable inductance devices | |
| US1537224A (en) | Radiofrequency transformer | |
| US2977469A (en) | Channel switching tuner | |
| US2277149A (en) | Switching mechanism for multiple frequency band receivers |