GB359431A - Improvements in or relating to quick make and break electric switches - Google Patents
Improvements in or relating to quick make and break electric switchesInfo
- Publication number
- GB359431A GB359431A GB2151930A GB2151930A GB359431A GB 359431 A GB359431 A GB 359431A GB 2151930 A GB2151930 A GB 2151930A GB 2151930 A GB2151930 A GB 2151930A GB 359431 A GB359431 A GB 359431A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- arm
- link
- rod
- spring
- 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
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/02—Details
- H01H21/14—Means for increasing contact pressure
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
359,431. Snapaction switches; drum controllers. T. S. MOTORS, Ltd. and DINE, E. H., Victoria Works, Maidstone, Kent. July 16, 1930, No. 21519. [Classes 38 (iii) and 38 (v).] Contacts.-As the contact arm of a switch comes to the end of its throw it is pressed against one part of a lever mechanism through which the contacting surfaces are pressed into contact with a considerably increased pressure. A drum controller 1 operates through a lost-motion device 20 to push or pull a connecting-rod 2 to cause a contact 4 on an arm 3 to engage either the contact 6, or the contact 6a of a change-over switch. A link 15 is pivoted at one end to the pivot 5 of the contact-arm 3, and is connected at the other end 14 to a link 13. A tension spring 10 connects the end of the link 13 to the contact-arm 3. The connecting-rod 2 is connected at 14 to the junction of links 13, 15 so that on moving the rod to the right the spring 10 is carried past the dead-centre position moving the contact-arm 3 across to engage the contact 6a. Projections 16 on the link 13 co-operate with the forked end 17 of the rod 2 to assist in throwing over the spring. The contact 6 is mounted on the shorter limb of a pivoted bell-crank lever 7 and is pressed downwards by a leaf spring 9. When the moving contact 4 first comes into contact with the contact 6 the latter is raised until a projection 8 on the lever 7 meets the contact-arm 3 and further movement serves to increase the contact pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2151930A GB359431A (en) | 1930-07-16 | 1930-07-16 | Improvements in or relating to quick make and break electric switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2151930A GB359431A (en) | 1930-07-16 | 1930-07-16 | Improvements in or relating to quick make and break electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB359431A true GB359431A (en) | 1931-10-16 |
Family
ID=10164285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2151930A Expired GB359431A (en) | 1930-07-16 | 1930-07-16 | Improvements in or relating to quick make and break electric switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB359431A (en) |
-
1930
- 1930-07-16 GB GB2151930A patent/GB359431A/en not_active Expired
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