GB209241A - Improvements in electric switches - Google Patents
Improvements in electric switchesInfo
- Publication number
- GB209241A GB209241A GB3060622A GB3060622A GB209241A GB 209241 A GB209241 A GB 209241A GB 3060622 A GB3060622 A GB 3060622A GB 3060622 A GB3060622 A GB 3060622A GB 209241 A GB209241 A GB 209241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- skeleton
- drum
- spindle
- rotatable
- 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
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
Landscapes
- Adjustable Resistors (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Switches With Compound Operations (AREA)
Abstract
209,241. Hewitt, J. H., and Wilkins & Wright, Ltd. Nov. 9, 1922. Switches, mechanical, without quick action, for use with wireless apparatus, where the metal parts should be of small volume and well separated to reduce capacity effects, have movable contacts 10 made of wire or strip metal and mounted on the insulating rotatable drum 8 in skeleton quadrant form to co-operate with spring contact fingers .13, 14, 15 which are mounted on the base and formed with V grooves at their contacting ends to ensure good contact. The. invention is shown in Fig. 1 applied to a four-pole change-over switch. A stop 20, mounted on the spindle support 2, limits the extreme angular movement of the drum. In the construction shown in Fig. 4, the fixed contacts are parallel with the axis of the rotatable spindle 4 on which the insulating disc carrying the skeleton contacts is mounted. A number of units similar to that shown in Fig. 4 may be superimposed one on the other and be operated by a common spindle. As shown in Fig. 8 applied to a variable inductance 55, one of the skeleton contacts 53 is extended round the drum at 56.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3060622A GB209241A (en) | 1922-11-09 | 1922-11-09 | Improvements in electric switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3060622A GB209241A (en) | 1922-11-09 | 1922-11-09 | Improvements in electric switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB209241A true GB209241A (en) | 1924-01-10 |
Family
ID=10310281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3060622A Expired GB209241A (en) | 1922-11-09 | 1922-11-09 | Improvements in electric switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB209241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE956778C (en) * | 1953-03-01 | 1957-01-24 | Blaupunkt Werke Gmbh | Multiple switches, especially wave switches, for high-frequency circuits |
-
1922
- 1922-11-09 GB GB3060622A patent/GB209241A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE956778C (en) * | 1953-03-01 | 1957-01-24 | Blaupunkt Werke Gmbh | Multiple switches, especially wave switches, for high-frequency circuits |
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