GB377902A - Improvements in or relating to interlocking switch-plugs - Google Patents
Improvements in or relating to interlocking switch-plugsInfo
- Publication number
- GB377902A GB377902A GB256332A GB256332A GB377902A GB 377902 A GB377902 A GB 377902A GB 256332 A GB256332 A GB 256332A GB 256332 A GB256332 A GB 256332A GB 377902 A GB377902 A GB 377902A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- plug
- socket
- slot
- plate
- 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
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/707—Structural association with built-in electrical component with built-in switch interlocked with contact members or counterpart
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
377,902. Plug couplings. PARSONS, Ltd., C. H. and HANDLEY, G. B., Britannia Works, Wharfdale Road, Tyseley, Birming- ham. Jan. 28, 1932, No. 2563. [Class 38 (i).] Combined with electric switches.-In an interlocking switch plug of the type in which the switch and the plug socket are so connected by a plate, slide or the like that the switch cannot be switched on until the plug has been inserted, and the plug cannot be withdrawn until the switch has been switched off, the plug socket a (shown as for the earthing pin of a three-pin plug) is open at its lower end and is surrounded by a spring-pressed sleeve d which is movable axially on the socket and extends across the lower end of the socket and carries a tongue f projecting through a slot l in a plate k. The plate k is connected to the switch by a cranked lever q pivoted at r on the switch bridge, and so long as the tongue f projects through the slot l, the plate k is locked and the switch cannot be switched on. The slot l is wider at one end than at the other, and when the switch is off, as shown, the wider end of the slot is in line with the socket. Insertion of the plug depresses the sleeve d against the action of the spring e, and carries the tongue f below the plate k. The switch can then be operated, the plate k then moving so that the narrow end of the slot l engages a reduced part n on the plug pin m ; the plug cannot then be withdrawn until the switch has been switched off. The sleeve d may be held against rotation on the socket by a lug g working in a slot h in a frame j, or a projecting pin on the socket may work in a slot on the sleeve, or the sleeve and the exterior of the socket may be of non-circular cross section; part of the sleeve may be cut away, or the sleeve may be of skeleton or spider form. As shown, one end of the plate k is guided in a horizontal slot in the frame j, and the other end is joined to a rocking arm p, but a modified construction is described, Figs. 7 and 8 (not shown), in whch the switch mechanism and the plug sockets are in line instead of side by side, the end of the plate k shown as connected to the arm p being then directly connected to the switch by a link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB256332A GB377902A (en) | 1932-01-28 | 1932-01-28 | Improvements in or relating to interlocking switch-plugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB256332A GB377902A (en) | 1932-01-28 | 1932-01-28 | Improvements in or relating to interlocking switch-plugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB377902A true GB377902A (en) | 1932-08-04 |
Family
ID=9741774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB256332A Expired GB377902A (en) | 1932-01-28 | 1932-01-28 | Improvements in or relating to interlocking switch-plugs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB377902A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165710A (en) * | 1984-10-12 | 1986-04-16 | David Cammiss | Improvements in or relating to electrical plugs |
| FR2607974A1 (en) * | 1986-12-08 | 1988-06-10 | Lemoine Gerard | Safety devices in a power socket, in order to prevent electrocution |
-
1932
- 1932-01-28 GB GB256332A patent/GB377902A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165710A (en) * | 1984-10-12 | 1986-04-16 | David Cammiss | Improvements in or relating to electrical plugs |
| FR2607974A1 (en) * | 1986-12-08 | 1988-06-10 | Lemoine Gerard | Safety devices in a power socket, in order to prevent electrocution |
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