GB393015A - Improvements relating to electric contact devices - Google Patents
Improvements relating to electric contact devicesInfo
- Publication number
- GB393015A GB393015A GB196932A GB196932A GB393015A GB 393015 A GB393015 A GB 393015A GB 196932 A GB196932 A GB 196932A GB 196932 A GB196932 A GB 196932A GB 393015 A GB393015 A GB 393015A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- springs
- spring
- circuit
- released
- 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
- H01H63/00—Details of electrically-operated selector switches
- H01H63/02—Contacts; Wipers; Connections thereto
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Mechanisms For Operating Contacts (AREA)
- Toys (AREA)
Abstract
393,015. Automatic exchange switches. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and HUMPHRIES, H. E., 61, Rochester Way, Blackheath, both in London. Jan. 22, 1932, No. 1969. [Class 40 (iv).] In a selecting switch in which a quick "make" " or " break " is produced between two spring contacts 4, 5 at a predetermined point i n t h e path of a cam 3 on a rotary disc 2 corresponding to a predetermined position of the wiper, the springs 4, 5 have projecting portions 7, 8 which are adapted to slip in turn off the cam as it moves along. In the form shown, the springs 4, 5 tend to engage each other and movement of the cam 3 from the position shown in Fig. 1 first causes both springs to move together away from the centre ; then, when the cam reaches a position 9, the spring 5 is released and the circuit opened, and a little later when the cam reaches a position 10 the spring 4 is also released and circuit is made again. The circuit then remains closed for the rest of the revolution. The normal position of the cam 3 is the position 9 in which the contacts are separated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB196932A GB393015A (en) | 1932-01-22 | 1932-01-22 | Improvements relating to electric contact devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB196932A GB393015A (en) | 1932-01-22 | 1932-01-22 | Improvements relating to electric contact devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB393015A true GB393015A (en) | 1933-06-01 |
Family
ID=9731227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB196932A Expired GB393015A (en) | 1932-01-22 | 1932-01-22 | Improvements relating to electric contact devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB393015A (en) |
-
1932
- 1932-01-22 GB GB196932A patent/GB393015A/en not_active Expired
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