GB379687A - Improvements in electric switches and in trip gear therefor, particularly applicableto limit switches for use with electrically operated stop valves and the like - Google Patents
Improvements in electric switches and in trip gear therefor, particularly applicableto limit switches for use with electrically operated stop valves and the likeInfo
- Publication number
- GB379687A GB379687A GB1525731A GB1525731A GB379687A GB 379687 A GB379687 A GB 379687A GB 1525731 A GB1525731 A GB 1525731A GB 1525731 A GB1525731 A GB 1525731A GB 379687 A GB379687 A GB 379687A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switches
- lever
- pivoted
- pivot
- switch
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
379,687. Snap-action switches. JONES, C. E., Victory Works, East Parade, Bradford. May 23, 1931, No. 15257. [Class 38 (v).] In "open" and "close" limit switches for electrically operated valves each switch C or C<1> has an actuating lever B pivoted at b3 and provided with a forked end b<1>, b<2> engaged by a rectilinearly driven reciprocating member A, the lever B being moved over dead centres to provide a quick action and means being provided for positively actuating the switch should the quick-action spring or weight fail. The lever B is pivoted at el to an arm E pivoted to a bell-crank lever f<1>, f<2> acted upon by a spring G, which provides the quick action when the pivot e<1> moves across the line connecting the pivot b<3> with the pivot e<2>. The pivot pin el moves in a slot h<1> in an arm H pivoted to a lever c<2> on a shaft c<1> of the rotary switch C and operates the latter. Should the spring G fail, the switch C is positively actuated but the member A has to travel further in this case before the actuation occurs. The switches C, C<1> are operated respectively by two members A adjustably fixed on nuts Q, Q<1> moving up and down on a screwed spindle R connected to the valve. Specification 344,013 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1525731A GB379687A (en) | 1931-05-23 | 1931-05-23 | Improvements in electric switches and in trip gear therefor, particularly applicableto limit switches for use with electrically operated stop valves and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1525731A GB379687A (en) | 1931-05-23 | 1931-05-23 | Improvements in electric switches and in trip gear therefor, particularly applicableto limit switches for use with electrically operated stop valves and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB379687A true GB379687A (en) | 1932-08-23 |
Family
ID=10055840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1525731A Expired GB379687A (en) | 1931-05-23 | 1931-05-23 | Improvements in electric switches and in trip gear therefor, particularly applicableto limit switches for use with electrically operated stop valves and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB379687A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2550792A (en) * | 1946-06-24 | 1951-05-01 | Cutler Hammer Inc | Electric switch |
| DE1232642B (en) * | 1964-03-07 | 1967-01-19 | Ruhrtal Elek Zitaetsgesellscha | Limit switch device for electrical switching off or switching back and forth movements |
| CN102691825A (en) * | 2012-06-07 | 2012-09-26 | 华夏阀门有限公司 | Anti-erosion linkage protective valve |
-
1931
- 1931-05-23 GB GB1525731A patent/GB379687A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2550792A (en) * | 1946-06-24 | 1951-05-01 | Cutler Hammer Inc | Electric switch |
| DE1232642B (en) * | 1964-03-07 | 1967-01-19 | Ruhrtal Elek Zitaetsgesellscha | Limit switch device for electrical switching off or switching back and forth movements |
| CN102691825A (en) * | 2012-06-07 | 2012-09-26 | 华夏阀门有限公司 | Anti-erosion linkage protective valve |
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