GB304773A - Improvements in or relating to automatic switches for use in telephone or like systems - Google Patents
Improvements in or relating to automatic switches for use in telephone or like systemsInfo
- Publication number
- GB304773A GB304773A GB2074/29A GB207429A GB304773A GB 304773 A GB304773 A GB 304773A GB 2074/29 A GB2074/29 A GB 2074/29A GB 207429 A GB207429 A GB 207429A GB 304773 A GB304773 A GB 304773A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prong
- engages
- telephone
- wipers
- ledge
- 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
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Structure Of Telephone Exchanges (AREA)
- Transmission Devices (AREA)
Abstract
304,773. Associated Telephone & Telegraph Co., (Assignees of Sengebusch, H.). Jan. 27, 1928, [Convention date]. Automatic exchange selectors.-A rotary switch with bare wire multiples has wipers, Fig. 4, of which the part 28 engages plates 3 while the part 29 (prong 30) engages the wires. The prong 31 engages a, ledge 2 to prevent the prong 30 from engaging two wires at once, but the ledge may be absent from the part 9 of the circumference occupied by test multiples. The plates 3 are moulded in an insulating base 1 mounted by screws on an angle-iron 10. Eight wipers are mounted 45 degrees apart on an insulating spider 16, driven by a ratchet wheel 26 under the base 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US249815A US1737807A (en) | 1928-01-27 | 1928-01-27 | Switch mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB304773A true GB304773A (en) | 1930-04-22 |
Family
ID=22945129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2074/29A Expired GB304773A (en) | 1928-01-27 | 1929-01-21 | Improvements in or relating to automatic switches for use in telephone or like systems |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1737807A (en) |
| GB (1) | GB304773A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2568050A (en) * | 1946-04-05 | 1951-09-18 | Siemens Brothers & Co Ltd | Rotary selective switch |
| US2698884A (en) * | 1950-09-21 | 1955-01-04 | Raymond T Moloney | Rotary switch contact assembly |
| CA965149A (en) * | 1972-12-18 | 1975-03-25 | Vernon E. Dickson | Rotary switch |
-
1928
- 1928-01-27 US US249815A patent/US1737807A/en not_active Expired - Lifetime
-
1929
- 1929-01-21 GB GB2074/29A patent/GB304773A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1737807A (en) | 1929-12-03 |
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