GB817986A - Improvements in and relating to mass-actuated electric switching devices - Google Patents
Improvements in and relating to mass-actuated electric switching devicesInfo
- Publication number
- GB817986A GB817986A GB1009357A GB1009357A GB817986A GB 817986 A GB817986 A GB 817986A GB 1009357 A GB1009357 A GB 1009357A GB 1009357 A GB1009357 A GB 1009357A GB 817986 A GB817986 A GB 817986A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bob
- tube
- ring
- bush
- casing
- 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
- 229910001369 Brass Inorganic materials 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010951 brass Substances 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 239000003351 stiffener Substances 0.000 abstract 2
- 230000037250 Clearance Effects 0.000 abstract 1
- 230000035512 clearance Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/02—Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
817,986. Gravity and inertia switches. ENGLISH ELECTRIC CO. Ltd. March 21, 1958 [March 27, 1957], No. 10093/57. Class 38 (5). A gravity- or inertia-actuated switch comprises a metal casing 10 within which a brass contact bob 19 is supported at the centre of a ring contact 11 by a steel tube forming a cantilever spring 18. The tube 18 is secured in a brass bush 15 clamped by a nut 17 in an insulating bush 14. A copperplated steel wire 20, at least part of which is a close fit in the tube 18, forms an adjustable stiffener for calibration of the device by means of the threaded plug 21. A nut 25 on bush 15 provides a connection to the contact bob 19 while a screw (Fig. 2, not shown) on the casing 10 serves as a connecting terminal for the ring 11. The ring 11 can be centralized with respect to bob 19 by virtue of large clearance holes for the securing screws 12. The casing 10 is closed on a sealing ring 24 by an end cap 13 having a flexible diaphragm 22, and the device is completely filled with a silicone oil for damping vibrations of the bob 19. The stiffener 20 may alternatively extend from the free end of tube 18, the plug 21 being adjustable within a threaded bore in bob 19.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US722777A US2938973A (en) | 1957-03-27 | 1958-03-20 | Mass-actuated electric switching devices |
| CH345378D CH345378A (en) | 1957-03-27 | 1958-03-26 | Electrical earth switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817986A true GB817986A (en) | 1959-08-12 |
Family
ID=1695995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1009357A Expired GB817986A (en) | 1957-03-27 | 1957-03-27 | Improvements in and relating to mass-actuated electric switching devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB817986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239137A (en) * | 1989-09-28 | 1991-06-19 | William James * Bell George | Arrangement to warn of braking or swerving of a vehicle |
-
1957
- 1957-03-27 GB GB1009357A patent/GB817986A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239137A (en) * | 1989-09-28 | 1991-06-19 | William James * Bell George | Arrangement to warn of braking or swerving of a vehicle |
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