GB486456A - Improvements in or relating to emergency-stop switches for use in electrically-driven power installations - Google Patents
Improvements in or relating to emergency-stop switches for use in electrically-driven power installationsInfo
- Publication number
- GB486456A GB486456A GB15937A GB15937A GB486456A GB 486456 A GB486456 A GB 486456A GB 15937 A GB15937 A GB 15937A GB 15937 A GB15937 A GB 15937A GB 486456 A GB486456 A GB 486456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emergency
- switch
- contacts
- relating
- electrically
- 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
- H01H21/18—Movable parts; Contacts mounted thereon
- H01H21/22—Operating parts, e.g. handle
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
486,456. Press - button retractive switches. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F.. and HARRISON, B. G. Jan. 4, 1937, No. 159. [Class 38 (v)] A switch for opening a circuit in an emergency, has moving contacts a<2> which may be operated to break circuit by a push-piece a<3> and has provision, accessible from outside its case b, for locking the switch in its '' off " position. The push-piece a<3> passes through a cover b<1> of the case b and has mounted on it by a pin a4, movable contacts a<2> normally engaging fixed contacts a<1>. To operate the switch, a cap c is manually depressed. about a pivot c<1>and against a spring c<2>, and, engaging the pushpiece a<3>, depresses it against a spring a<5> to open the contacts. If desired it may be locked in the open position by a padlock passed through a hole d<3> in a stud d a head d<1> of which is a stop for cap c in the normally closed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15937A GB486456A (en) | 1937-01-04 | 1937-01-04 | Improvements in or relating to emergency-stop switches for use in electrically-driven power installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15937A GB486456A (en) | 1937-01-04 | 1937-01-04 | Improvements in or relating to emergency-stop switches for use in electrically-driven power installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB486456A true GB486456A (en) | 1938-06-03 |
Family
ID=9699433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15937A Expired GB486456A (en) | 1937-01-04 | 1937-01-04 | Improvements in or relating to emergency-stop switches for use in electrically-driven power installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB486456A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3081390A (en) * | 1960-01-11 | 1963-03-12 | Lasar William | Safety switch device |
-
1937
- 1937-01-04 GB GB15937A patent/GB486456A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3081390A (en) * | 1960-01-11 | 1963-03-12 | Lasar William | Safety switch device |
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