GB378562A - Improvements in or relating to rotary electric switches for wireless receiving apparatus - Google Patents
Improvements in or relating to rotary electric switches for wireless receiving apparatusInfo
- Publication number
- GB378562A GB378562A GB1517131A GB1517131A GB378562A GB 378562 A GB378562 A GB 378562A GB 1517131 A GB1517131 A GB 1517131A GB 1517131 A GB1517131 A GB 1517131A GB 378562 A GB378562 A GB 378562A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- switch
- subsidiary
- wireless receiving
- switches
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/60—Angularly-movable actuating part carrying no contacts
- H01H19/62—Contacts actuated by radial cams
Landscapes
- Multiple-Way Valves (AREA)
Abstract
378,562. Wireless receiving apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and HUNTER, S. G., of General Electric Co., Stoke, Coventry. May 22, 1931, No. 15171. [Class 40 (v).] A switching device for a wireless receiving set comprises a shaft 1 which, when rotated into a number of different angular positions causes the selective operation of certain subsidiary devices, and also, by means of a cam 7 mounted with lost motion on the shaft, the engagement or disengamgeent of a spring contact 8 with a fixed contact 9. In the form shown, the shaft has five positions, determined by the engagement of a spring projection 26 with five depressions 25 in a disc 24 fixed to the shaft, and in one only of these five positions, viz. that shown in Fig. 2, is the switch 8, 9 open. The switch 8, 9 may be used to connect the set to the mains. The subsidiary devices may comprise five switches each operated by the sidewise movement of a ball 21 produced by rotating the shaft and bringing small or large depressions 23, 22 opposite the ball. The particular subsidiary switch operated depends on the angular position of the shaft and three of these subsidiary switches are wave changing switches for the valve couplings, one is a switch for shortcircuiting a condenser in series with the aerial lead and the other operates a gramophone pickup. The spring strip 8 has two end portions 14, 15 one of which breaks circuit before the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1517131A GB378562A (en) | 1931-05-22 | 1931-05-22 | Improvements in or relating to rotary electric switches for wireless receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1517131A GB378562A (en) | 1931-05-22 | 1931-05-22 | Improvements in or relating to rotary electric switches for wireless receiving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB378562A true GB378562A (en) | 1932-08-18 |
Family
ID=10054274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1517131A Expired GB378562A (en) | 1931-05-22 | 1931-05-22 | Improvements in or relating to rotary electric switches for wireless receiving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB378562A (en) |
-
1931
- 1931-05-22 GB GB1517131A patent/GB378562A/en not_active Expired
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