GB638181A - Improvements relating to lever operated electric switches for alternating current circuits - Google Patents
Improvements relating to lever operated electric switches for alternating current circuitsInfo
- Publication number
- GB638181A GB638181A GB3240647A GB3240647A GB638181A GB 638181 A GB638181 A GB 638181A GB 3240647 A GB3240647 A GB 3240647A GB 3240647 A GB3240647 A GB 3240647A GB 638181 A GB638181 A GB 638181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- lever
- extension
- cover
- contacts
- 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
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
- H01H23/12—Movable parts; Contacts mounted thereon
- H01H23/16—Driving mechanisms
- H01H23/164—Driving mechanisms with rectilinearly movable member carrying the contacts
Landscapes
- Lock And Its Accessories (AREA)
Abstract
638,181. Tumbler switches. PARSONS, Ltd., C. H., and HANDLEY, G. B. Dec. 9, 1947, No. 32406. [Class 38 (v)] A dolly-actuated guide 18, slidable in the switch housing, encloses a spring 15 compressed between the guide-cover 19 and the collar 16 of a plunger 14 which bears on a contact bar 10 against which presses a return compression spring 11. An extension 17 may be provided on the plunger so that when the lever 21 is operated the spring 15 is first compressed and then the cover 19 engages the extension 17 to positively separate the contacts 10, 12. Alternatively, the extension is omitted and the spring 15 made stronger than the spring 11. In another construction, Fig. 4, a further compression spring 25 maintains the cover 19 against the lever 21 and a blade 26, fixed to the contact bar, is flexed when the contacts 10, 12 are closed. In a modification (Fig. 6, not shown) the contact bar 10 is pivoted at one end and functions as a two-way switch by engaging fixed contacts at each position of the operating lever. A pair of contact bars 10 may be provided operated by a common lever (Fig. 7, not shown). Specification 637,837 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3240647A GB638181A (en) | 1947-12-09 | 1947-12-09 | Improvements relating to lever operated electric switches for alternating current circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3240647A GB638181A (en) | 1947-12-09 | 1947-12-09 | Improvements relating to lever operated electric switches for alternating current circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB638181A true GB638181A (en) | 1950-05-31 |
Family
ID=10338119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3240647A Expired GB638181A (en) | 1947-12-09 | 1947-12-09 | Improvements relating to lever operated electric switches for alternating current circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB638181A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112249911A (en) * | 2020-11-13 | 2021-01-22 | 新兴铸管股份有限公司 | Bridge crane trolley stroke limiting invisible protection device |
-
1947
- 1947-12-09 GB GB3240647A patent/GB638181A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112249911A (en) * | 2020-11-13 | 2021-01-22 | 新兴铸管股份有限公司 | Bridge crane trolley stroke limiting invisible protection device |
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