GB778726A - Improvements relating to electric switches having two "on" and one "off" positions - Google Patents
Improvements relating to electric switches having two "on" and one "off" positionsInfo
- Publication number
- GB778726A GB778726A GB19668/54A GB1966854A GB778726A GB 778726 A GB778726 A GB 778726A GB 19668/54 A GB19668/54 A GB 19668/54A GB 1966854 A GB1966854 A GB 1966854A GB 778726 A GB778726 A GB 778726A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- lever
- quadrant
- contacts
- cams
- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
Landscapes
- Push-Button Switches (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
778,726. Switches held set and freed mechanically. HOOVER, Ltd. June 17, 1955 [July 5, 1954], No. 19668/54. Class 38(5) A switch having two " on " positions and an intermediate " off " postion comprises a hand lever 25 controlling a shaft 12 carrying six cams 20 arranged side-by-side (Fig. 2, not shown), each cam operating a contact blade 22. Two of the cams have two " flats," 21 whereby their contacts 22 close in both " on " positions of the lever, whereas two other cams have a single " flat arranged to close their contacts in one " on " position, the two remaining cams. closing their contacts in the other on " position. The contacts are enclosed in a watertight casing 10 having end wallsthrough which the shaft ends are sealed, the lever 25 being situated at one end of casing. At the other end of the casing the shaft carries a quadrant 27 co-operating. with lugs 37 of a member 32 attached to the ends of an arch-shaped push-button 31 straddling the shaft. A pivoted arm 33 biased by a spring 34 has a turned-over end engaging a hole in the member 32 to bias the button 31 outwardly. When the lever 25 is moved to either " on " position a lug 35 on the member 32 is moved into locking engagement with one of a pair of shoulders 36 formed on the quadrant 27 whereby the lever cannot return the shaft to the "off" position, Fig. 5. A blade spring 41 co-operates with ears 40 of a saddle 39 integral with the quadrant 27 so that when the button is pressed the lug 35 leaves the shoulder 36 and the spring 41 rotates the shaft to the "off" position. If the spring 41 fails to act the switch is positively moved " off " by the engagement of one of the lugs 37 with a radial face 38 of the quadrant or with an ear 40. Specification 778,169 [Group XXIV] is referred to.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19668/54A GB778726A (en) | 1954-07-05 | 1954-07-05 | Improvements relating to electric switches having two "on" and one "off" positions |
| US514209A US2786905A (en) | 1954-07-05 | 1955-06-09 | Electrical switch |
| ES0222711A ES222711A1 (en) | 1954-07-05 | 1955-06-30 | Electrical switch |
| FR1126836D FR1126836A (en) | 1954-07-05 | 1955-06-30 | Improvements to electrical switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19668/54A GB778726A (en) | 1954-07-05 | 1954-07-05 | Improvements relating to electric switches having two "on" and one "off" positions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB778726A true GB778726A (en) | 1957-07-10 |
Family
ID=10133197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19668/54A Expired GB778726A (en) | 1954-07-05 | 1954-07-05 | Improvements relating to electric switches having two "on" and one "off" positions |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2786905A (en) |
| ES (1) | ES222711A1 (en) |
| FR (1) | FR1126836A (en) |
| GB (1) | GB778726A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL222241A (en) * | 1956-11-09 | |||
| US2870278A (en) * | 1957-12-03 | 1959-01-20 | Gen Electric | Timing mechanism for conducting a selected one of a plurality of sequences of operation |
| CH520396A (en) * | 1970-10-06 | 1972-03-15 | Demag Ag | Hanging switch |
| US3725624A (en) * | 1971-02-22 | 1973-04-03 | Dynamics Corp America | Rotary switch beater ejector |
| US4059738A (en) * | 1976-05-24 | 1977-11-22 | Tower Manufacturing Corporation | Multi-position switch assembly having plural operator with primary and secondary detented cams |
| US10596400B2 (en) * | 2016-09-04 | 2020-03-24 | Williams RDM, Inc. | Stovetop fire extinguisher mounting device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1902700A (en) * | 1931-05-05 | 1933-03-21 | Hadano Rinjiro | Switch for direction indicators |
| US2404940A (en) * | 1943-04-06 | 1946-07-30 | Bryant Electric Co | Circuit controller |
-
1954
- 1954-07-05 GB GB19668/54A patent/GB778726A/en not_active Expired
-
1955
- 1955-06-09 US US514209A patent/US2786905A/en not_active Expired - Lifetime
- 1955-06-30 FR FR1126836D patent/FR1126836A/en not_active Expired
- 1955-06-30 ES ES0222711A patent/ES222711A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES222711A1 (en) | 1955-10-16 |
| FR1126836A (en) | 1956-12-03 |
| US2786905A (en) | 1957-03-26 |
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