GB659449A - Electric control of temperature and other conditions by means of conditionresponsive contact-carrying instruments - Google Patents
Electric control of temperature and other conditions by means of conditionresponsive contact-carrying instrumentsInfo
- Publication number
- GB659449A GB659449A GB9283/49A GB928349A GB659449A GB 659449 A GB659449 A GB 659449A GB 9283/49 A GB9283/49 A GB 9283/49A GB 928349 A GB928349 A GB 928349A GB 659449 A GB659449 A GB 659449A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- contacts
- circuit
- relays
- contact
- 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
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/226—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil for bistable relays
Landscapes
- Relay Circuits (AREA)
- Breakers (AREA)
Abstract
659,449. Automatic temperature control systems. BUSER, T., and SAIA AKT.-GES. FUR SCHALTAPPARATE. April 5, 1949, No. 9283. [Class 38 (iv)] [Also in Group XXXVII] In an arrangement wherein a temperatureresponsive or other instrument z controls the current to a load v by engaging maximum or minimum contacts which control relays 1, 2, these contacts are adapted to take only the small current required to demagnetize relays 1, 2 whose armatures are held by remanent magnetism, and the circuit through these contacts is broken elsewhere. The relays 1, 2 each comprises an L-shaped armature 9 held in the position shown by a contact spring 11 and adapted when attracted to open contacts 12 and close contacts 13. The armatures of the two relays also co-operate with a centrally-pivoted rocker 21 controlled by a dead-centre spring 18 and carrying two arms 15, 16 each carrying contacts 22, 23. The arm 16 is situated behind the arm 15, Fig. 1. Energization of either relay will pull down its end of the rocker if it is not already in that position and subsequent release of the relay will have no effect on the rocker. In Fig. 4, relay 1 is " released " and relay 2 has its armature held by remanent magnetism. When, with change of temperature, the instrument z engages its maximum contact, a small A.C. demagnetizing current passes through the resistance W2 and the relay coil 2 causing release of its armature, breaking of the load circuit v and of the demagnetizing current at 2a and completion at 2r of a circuit to relay 1 which operates its contacts 1a and 1r and reverses the position of rockers 15, 16, thereby breaking the relay circuit at 15a and preparing at 1a a demagnetizing circuit for the relay 1. This latter circuit is completed when the instrument z engages its minimum contact, whereupon relay 1 releases and completes a circuit through relay which brings all parts back to their original positions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH283209T | 1947-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB659449A true GB659449A (en) | 1951-10-24 |
Family
ID=29721322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9283/49A Expired GB659449A (en) | 1947-07-18 | 1949-04-05 | Electric control of temperature and other conditions by means of conditionresponsive contact-carrying instruments |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2587441A (en) |
| CH (1) | CH283209A (en) |
| FR (1) | FR971050A (en) |
| GB (1) | GB659449A (en) |
| NL (1) | NL72740C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1125693B (en) * | 1953-11-06 | 1962-03-15 | Karl Rabofsky G M B H Maschine | Temperature controller |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581157A (en) * | 1969-01-17 | 1971-05-25 | Pettibone Corp | Electrical relay circuitry |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1624132A (en) * | 1921-03-26 | 1927-04-12 | Brown Engineering Corp | Gas-control appliance |
| US2331697A (en) * | 1941-01-31 | 1943-10-12 | Gen Electric | Control system |
| GB564935A (en) * | 1943-04-16 | 1944-10-19 | Standard Telephones Cables Ltd | Improvements in or relating to electrical overload and like cut-out arrangements |
| US2552636A (en) * | 1949-02-14 | 1951-05-15 | Herbert Clemmens | Time-delay relay arrangement |
-
1947
- 1947-07-18 CH CH283209D patent/CH283209A/en unknown
-
1948
- 1948-08-20 NL NL141992A patent/NL72740C/xx active
- 1948-09-03 FR FR971050D patent/FR971050A/en not_active Expired
-
1949
- 1949-04-05 GB GB9283/49A patent/GB659449A/en not_active Expired
- 1949-04-13 US US87142A patent/US2587441A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1125693B (en) * | 1953-11-06 | 1962-03-15 | Karl Rabofsky G M B H Maschine | Temperature controller |
Also Published As
| Publication number | Publication date |
|---|---|
| NL72740C (en) | 1953-07-15 |
| US2587441A (en) | 1952-02-26 |
| CH283209A (en) | 1952-05-31 |
| FR971050A (en) | 1951-01-11 |
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