GB523533A - Improvements in or relating to electric switches such as used for controlling electric motors - Google Patents
Improvements in or relating to electric switches such as used for controlling electric motorsInfo
- Publication number
- GB523533A GB523533A GB3255738A GB3255738A GB523533A GB 523533 A GB523533 A GB 523533A GB 3255738 A GB3255738 A GB 3255738A GB 3255738 A GB3255738 A GB 3255738A GB 523533 A GB523533 A GB 523533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- relating
- closed
- controller
- electric
- 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
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
Landscapes
- Motor And Converter Starters (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
523,533. Controllers. IGRANIC ELECTRIC CO., Ltd., and WRIGHT, S. R. Nov. 9, 1938, No. 32557. [Class 38 (iii)] No-volt release.-A controller with forward contacts 4, shown closed, for running, and reverse contacts 4, shown open, which are closed for plugging has a no-volt coil 12 arranged to hold the forward contacts closed. The contacts are operated by a longitudinally operated knob 8, which when moved to the left compresses a spring 17 and then opens contacts 14 in circuit with the coil 12. This controller is combined with a speed controller A such as described in Specifications 507,759 and 507,760.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3255738A GB523533A (en) | 1938-11-09 | 1938-11-09 | Improvements in or relating to electric switches such as used for controlling electric motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3255738A GB523533A (en) | 1938-11-09 | 1938-11-09 | Improvements in or relating to electric switches such as used for controlling electric motors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB523533A true GB523533A (en) | 1940-07-17 |
Family
ID=10340481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3255738A Expired GB523533A (en) | 1938-11-09 | 1938-11-09 | Improvements in or relating to electric switches such as used for controlling electric motors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB523533A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114481438A (en) * | 2022-02-16 | 2022-05-13 | 嘉善爱欧特服装有限公司 | Laying equipment of high-resilience thermal wadding sheet for cold-proof clothes |
-
1938
- 1938-11-09 GB GB3255738A patent/GB523533A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114481438A (en) * | 2022-02-16 | 2022-05-13 | 嘉善爱欧特服装有限公司 | Laying equipment of high-resilience thermal wadding sheet for cold-proof clothes |
CN114481438B (en) * | 2022-02-16 | 2022-08-09 | 嘉善爱欧特服装有限公司 | Laying equipment of high-resilience thermal wadding sheet for cold-proof clothes |
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