GB343983A - Improvements in or relating to step-by-step selectors for telephone or like systems - Google Patents
Improvements in or relating to step-by-step selectors for telephone or like systemsInfo
- Publication number
- GB343983A GB343983A GB3639729A GB3639729A GB343983A GB 343983 A GB343983 A GB 343983A GB 3639729 A GB3639729 A GB 3639729A GB 3639729 A GB3639729 A GB 3639729A GB 343983 A GB343983 A GB 343983A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- magnet
- polepiece
- wipers
- core
- 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
- H01H67/00—Electrically-operated selector switches
- H01H67/02—Multi-position wiper switches
- H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
- H01H67/06—Rotary switches, i.e. having angularly movable wipers
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
343,983. Automatic exchange switches. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London.-(Schreiber, L. J. J. and Sano, K. M.; 18, Rue Boudewyns, Antwerp, Belgium.) Nov. 27, 1929, No. 36397. [Class 40 (iv).] The movement of a pivoted armature 9 is communicated to the wipers through a one-way coupling comprising a helical spring 18 tightly wound around members 10, 30 rotatable on a common shaft 16 and secured respectively to the armature and to the wiper carrier. The armature 9 carries a polepiece 3 passing through an aperture in one arm of the magnet yoke 22 and fitting into a recess in the magnet core 2, the polepiece 3 thus serving in the energized condition of the magnet to form a magnetic bridge between the yoke and the core. Screws 11, 8 permit adjustment of the stroke of the armature and the width of the air-gap between polepiece and core. A ball 13 carried by a spring 4 and engaging a toothed wheel 15 ensures centring of the wipers. The shaft 16 is held at one end in a slot in the frame 6 to which are also secured the terminal bank 5 and the magnet yoke 22, the latter adjustably. A pointer 27 on the shaft 16 indicates on a disc 26 carried by the wiper carrier the position of the wipers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3639729A GB343983A (en) | 1929-11-27 | 1929-11-27 | Improvements in or relating to step-by-step selectors for telephone or like systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3639729A GB343983A (en) | 1929-11-27 | 1929-11-27 | Improvements in or relating to step-by-step selectors for telephone or like systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB343983A true GB343983A (en) | 1931-02-27 |
Family
ID=10387757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3639729A Expired GB343983A (en) | 1929-11-27 | 1929-11-27 | Improvements in or relating to step-by-step selectors for telephone or like systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB343983A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2600938A (en) * | 1949-09-20 | 1952-06-17 | Remington Rand Inc | Stepping switch |
| CN111354581A (en) * | 2020-05-14 | 2020-06-30 | 广东电网有限责任公司东莞供电局 | Multi-power switching device |
-
1929
- 1929-11-27 GB GB3639729A patent/GB343983A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2600938A (en) * | 1949-09-20 | 1952-06-17 | Remington Rand Inc | Stepping switch |
| CN111354581A (en) * | 2020-05-14 | 2020-06-30 | 广东电网有限责任公司东莞供电局 | Multi-power switching device |
| CN111354581B (en) * | 2020-05-14 | 2020-08-21 | 广东电网有限责任公司东莞供电局 | Multi-power switching device |
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