GB231765A - Electric switching means for indicating electrical overloads - Google Patents
Electric switching means for indicating electrical overloadsInfo
- Publication number
- GB231765A GB231765A GB2421224A GB2421224A GB231765A GB 231765 A GB231765 A GB 231765A GB 2421224 A GB2421224 A GB 2421224A GB 2421224 A GB2421224 A GB 2421224A GB 231765 A GB231765 A GB 231765A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- indicating lamp
- bridging
- contact
- excess current
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
231,765. Samper, J. Oct. 13, 1924. Electromagnetic switches tripped mechanically to reset indicators. - In a supply installation excess current beyond that contracted for raises a solenoid and closes a switch in the circuit of an indicating lamp, the switch being closed by a gravity latch until released by hand, after opening a locked casing, by the authorized person. In the form shown in Figs. 1 and 3 in which excess current closes the circuit of the indicating lamp but does not otherwise effect the supply, the core H when raised by the excess current lifts a bridging contact-carrying member F carried by a plate K guided by the projections K<1> so that a central contact is moved from a fixed contact M, Fig. 3, thereby breaking the circuit of the solenoid, and the bridging contact engages the fixed spring contacts D, E. This provides an alternative circuit through the lead 8 to the load and an additional circuit through the leads 7, 8 including the indicating lamp. The bridging member is maintained in the raised position by the gravity latch B engaging the plate K and the current to the indicating lamp can only be broken by the authorized person. In a modification the circuits are so arranged that the supply circuit is broken when the bridging member rises on overload.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2421224A GB231765A (en) | 1924-10-13 | 1924-10-13 | Electric switching means for indicating electrical overloads |
DES68732D DE421797C (en) | 1924-10-13 | 1925-02-07 | Electromagnetic current limiter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2421224A GB231765A (en) | 1924-10-13 | 1924-10-13 | Electric switching means for indicating electrical overloads |
Publications (1)
Publication Number | Publication Date |
---|---|
GB231765A true GB231765A (en) | 1925-04-09 |
Family
ID=10208142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2421224A Expired GB231765A (en) | 1924-10-13 | 1924-10-13 | Electric switching means for indicating electrical overloads |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE421797C (en) |
GB (1) | GB231765A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7637452B2 (en) | 2006-05-02 | 2009-12-29 | Rex Products, Inc. | Motorized adhesive paper dispenser |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074728B (en) * | 1960-02-04 | Heliowatt Werke Elektrizitäts-Aktiengesellschaft, Berlin - Charlottenburg | Electromagnetic current limiter |
-
1924
- 1924-10-13 GB GB2421224A patent/GB231765A/en not_active Expired
-
1925
- 1925-02-07 DE DES68732D patent/DE421797C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7637452B2 (en) | 2006-05-02 | 2009-12-29 | Rex Products, Inc. | Motorized adhesive paper dispenser |
Also Published As
Publication number | Publication date |
---|---|
DE421797C (en) | 1925-11-17 |
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