GB1012962A - Improvements in or relating to switch mechanisms - Google Patents
Improvements in or relating to switch mechanismsInfo
- Publication number
- GB1012962A GB1012962A GB4275760A GB4275760A GB1012962A GB 1012962 A GB1012962 A GB 1012962A GB 4275760 A GB4275760 A GB 4275760A GB 4275760 A GB4275760 A GB 4275760A GB 1012962 A GB1012962 A GB 1012962A
- Authority
- GB
- United Kingdom
- Prior art keywords
- abutments
- lever
- switch
- tube
- actuator
- 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
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
- H01H35/2635—Means for adjustment of "ON" or "OFF" operating pressure by adjustment of a motion transmitting system
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
- Actuator (AREA)
Abstract
1,012,962. Fluid actuation of switches. K. D. G. INSTRUMENTS Ltd., G. W. KING, and T. W. R. BULL. Dec. 12, 1961 [Dec. 12, 1960], No. 42757/60. Heading H2B. A micro-switch is arranged to be actuated by a control member, e.g. a fluid-responsive element, through a lost motion device. In one form, Fig. 1, a Bowden tube 10 carries a member 13 connected to one arm 14 of a lever 15 by a yielding resilient connection 7. Lever 15 is in turn pivoted to a lever 20 carrying a roller 21 movable between abutments 22, 23, the other end of lever 21 straddling a pin 24 adjustably carried by a bell-crank 29 connected to the actuator 35 of micro-switch 36. If pressure increases, the tube 10 tends to straighten and lift member 20 which pivots about pin 24 until roller 21 engages abutment 23. Member 20 now pivots about the roller to pivot bellcrank 29 and actuate the switch. The resilient connection 7 allows for over-travel of the tube 10. Abutments 22, 23 may be adjusted by cams, Fig. 3 (not shown). In an alternative arrangement actuated by a diaphragm (or bellows or Bowden tube), Figs. 5-8 (not shown), the abutments are adjusted by screw-threaded spindles. In a modification, the microswitch body is moved by the control member and relative movement between the body and the switch actuator is caused by a member attached to the actuator meeting one of the abutments, Figs. 9-11 (not shown) and the resilient connection 7 is formed by a pair of coiled tension springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4275760A GB1012962A (en) | 1960-12-12 | 1960-12-12 | Improvements in or relating to switch mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4275760A GB1012962A (en) | 1960-12-12 | 1960-12-12 | Improvements in or relating to switch mechanisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1012962A true GB1012962A (en) | 1965-12-15 |
Family
ID=10425840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4275760A Expired GB1012962A (en) | 1960-12-12 | 1960-12-12 | Improvements in or relating to switch mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1012962A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191635A (en) * | 1986-06-13 | 1987-12-16 | Veglia Borletti Srl | A manometer with a device for indicating insufficient pressure |
-
1960
- 1960-12-12 GB GB4275760A patent/GB1012962A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191635A (en) * | 1986-06-13 | 1987-12-16 | Veglia Borletti Srl | A manometer with a device for indicating insufficient pressure |
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