GB156076A - Improvements in or relating to electro-magnetic relays - Google Patents
Improvements in or relating to electro-magnetic relaysInfo
- Publication number
- GB156076A GB156076A GB27477/20A GB2747720A GB156076A GB 156076 A GB156076 A GB 156076A GB 27477/20 A GB27477/20 A GB 27477/20A GB 2747720 A GB2747720 A GB 2747720A GB 156076 A GB156076 A GB 156076A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lines
- relay
- meter
- master switch
- record
- 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
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
- H01H50/74—Mechanical means for producing a desired natural frequency of operation of the contacts, e.g. for self-interrupter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/86—Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
- H01H50/88—Mechanical means, e.g. dash-pot
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Relay Circuits (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Electromagnets (AREA)
Abstract
156,076. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Erickson, J.). Dec. 31, 1919, [Convention date]. Metering.-In order to record the number of times a group of trunk lines become busy, a master switch of the kind described in Specification 15072/12, which is only in continuous motion when all the lines are engaged, is caused to operate a switch which controls a relay 2. One of the contact arms 4, 5 carries an adjustable weight 7, which is set into vibration when the relay is operated. So long as the contact vibrates, the current passed is insufficient to actuate the armature n of the magnet m of the meter M, which therefore does not record until the contacts 4, 5 become steady. This ensures that any momentary movement of the master switch, i.e. when preselecting idle lines &c., will not affect the meter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US348548A US1641256A (en) | 1919-12-31 | 1919-12-31 | Electromagnetic relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB156076A true GB156076A (en) | 1921-11-24 |
Family
ID=23368500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27477/20A Expired GB156076A (en) | 1919-12-31 | 1920-09-27 | Improvements in or relating to electro-magnetic relays |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US1641256A (en) |
| DE (1) | DE357235C (en) |
| FR (1) | FR540744A (en) |
| GB (1) | GB156076A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE968494C (en) * | 1943-12-07 | 1958-02-27 | Metzenauer & Jung G M B H | Contact for electrical switchgear |
-
1919
- 1919-12-31 US US348548A patent/US1641256A/en not_active Expired - Lifetime
-
1920
- 1920-09-27 GB GB27477/20A patent/GB156076A/en not_active Expired
- 1920-11-19 DE DEA34396D patent/DE357235C/en not_active Expired
- 1920-12-31 FR FR540744D patent/FR540744A/en not_active Expired
-
1925
- 1925-09-11 US US55688A patent/US1779423A/en not_active Expired - Lifetime
-
1926
- 1926-10-26 US US144266A patent/US1727968A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR540744A (en) | 1922-07-17 |
| US1727968A (en) | 1929-09-10 |
| DE357235C (en) | 1922-08-21 |
| US1641256A (en) | 1927-09-06 |
| US1779423A (en) | 1930-10-28 |
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