GB679616A - Improvements in and relating to control systems for regulating the rate and sense of movement of motors - Google Patents
Improvements in and relating to control systems for regulating the rate and sense of movement of motorsInfo
- Publication number
- GB679616A GB679616A GB634748A GB634748A GB679616A GB 679616 A GB679616 A GB 679616A GB 634748 A GB634748 A GB 634748A GB 634748 A GB634748 A GB 634748A GB 679616 A GB679616 A GB 679616A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- solenoid
- arc
- pair
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
- H05B7/148—Automatic control of power
- H05B7/156—Automatic control of power by hydraulic or pneumatic means for positioning of electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2278—Pressure modulating relays or followers
- Y10T137/2322—Jet control type
Abstract
679,616. Fluid-pressure servomotor-control systems. ASKANIA REGULATOR CO. Feb. 28, 1948 [Sept. 28, 1946], No. 6347/48. Class 135 [Also in Group XXXV] In an electric arc furnace in which each electrode is moved by a hydraulic servomotor controlled by a pair of solenoids, one responsive to arc voltage and the other to arc current, the rate of movement of the electrode is normally limited by a first pair of stops which may be over-ridden to allow a higher rate, in turn limited by a pair of fixed stops. Each electrode 11 is moved by a hydraulic motor 6 controlled as to speed and direction by a pivoted jet pipe 19 co-operating with port 20 or port 21. The jet pipe is controlled by a solenoid 28 energised by a current transformer 52 according to arc current, and by an opposing solenoid 29 energised by a transformer 61 according to the arc voltage. Hence the ratio of are voltage to arc current is normally held constant by the solenoid cores 36, 36a, moving on suspension spring 39, 39a, between adjustable spring stops 40, 40a. When striking the arc, or under abnormal operating conditions, one solenoid will be energised very much more than the other, and the end of the suspension spring 39 or 39a snaps past the end of the first stop 40 or 40a, as the case may be, allowing the electrode to move at a higher rate, limited by an extension of the core meeting an adjustable, rigid stop 45 or 45a. A screw 46 in the current solenoid 28 bears against the suspension spring 39 to bias the system to raise the electrode if the power fails. Specification 629,394 is referred to. The Specification as open to inspection under Sect. 91, also discloses a modification, Fig. 2, (Cancelled), in which the solenoids 35<SP>1</SP>, 35a<SP>1</SP>, act on cores at either end of a pivoted beam balance which in addition to an arm 76 operating the regulator, has an arm 75 located between a pair of spring- loaded plungers 84, 85 which act as first, yielding limits, the housings of the plungers forming fixed limits. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69998146 US2485094A (en) | 1946-09-28 | 1946-09-28 | Multiple speed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB679616A true GB679616A (en) | 1952-09-24 |
Family
ID=26748441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB634748A Expired GB679616A (en) | 1946-09-28 | 1948-02-28 | Improvements in and relating to control systems for regulating the rate and sense of movement of motors |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2485094A (en) |
| GB (1) | GB679616A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2924200A (en) * | 1953-03-04 | 1960-02-09 | Westinghouse Electric Corp | Aircraft flight control apparatus |
| US2777426A (en) * | 1953-12-07 | 1957-01-15 | Model Engineering & Mfg Inc | Hydraulic speed control valve |
| US2977439A (en) * | 1957-10-03 | 1961-03-28 | Ite Circuit Breaker Ltd | Automatic recloser |
| US2921107A (en) * | 1958-07-01 | 1960-01-12 | Mc Graw Edison Co | Control system for arc furnace |
| US3017864A (en) * | 1958-08-18 | 1962-01-23 | American Brake Shoe Co | Valve |
| US3233522A (en) * | 1963-05-28 | 1966-02-08 | Gen Electric | Fluid control system |
| US3282283A (en) * | 1963-12-23 | 1966-11-01 | Gocko Regulator Co Ltd | Hydraulic regulating system and apparatus |
| US3290997A (en) * | 1964-09-24 | 1966-12-13 | Pneumo Dvnamics Corp | Low pressure pneumatic proportional control system |
| DE3023052A1 (en) * | 1980-06-20 | 1982-01-14 | Benteler-Werke Ag Werk Neuhaus, 4790 Paderborn | METHOD FOR RELEASING THE ELECTRODES OF AN ELECTRIC ARC FURNACE |
| FR2981133B1 (en) * | 2011-10-10 | 2013-10-25 | In Lhc | METHOD OF DETECTING FAILURE OF SERVOVALVE AND SERVOVALVE APPLYING. |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1347838A (en) * | 1920-07-27 | Method op treating metals | ||
| DE431624C (en) * | 1919-04-24 | 1926-07-14 | Vanadium Corp | Control device for electric ovens |
| US1562204A (en) * | 1924-06-24 | 1925-11-17 | Arca Regulators Inc | Electric-furnace control |
| US1588659A (en) * | 1924-08-01 | 1926-06-15 | Niels A Christensen | Vehicle brake-control valve |
| US1959889A (en) * | 1928-06-04 | 1934-05-22 | Wunsch Guido | Device for compensating a deflection of a control member which has been affected by achange in the impulse value |
| US1956775A (en) * | 1930-02-13 | 1934-05-01 | Charles A Ross | Valve |
| GB366062A (en) * | 1930-09-23 | 1932-01-25 | Siemens Brothers & Co Ltd | Improvements in electromagnets |
| US1953454A (en) * | 1932-07-05 | 1934-04-03 | Oilgear Co | Electrode control |
| US1957064A (en) * | 1933-04-20 | 1934-05-01 | Kellogg M W Co | Welding electrode feed control switch |
| US2098672A (en) * | 1936-11-02 | 1937-11-09 | Payne William Harvey | Automatic electric arc furnace electrode control |
| US2329743A (en) * | 1941-03-29 | 1943-09-21 | Westinghouse Air Brake Co | Locking device for clutch control mechanisms |
| US2422362A (en) * | 1944-06-13 | 1947-06-17 | Delaware Engineering Corp | Furnace electrode regulator |
| US2388369A (en) * | 1944-10-30 | 1945-11-06 | Shendrick Constantine | Fluid control valve |
| US2419988A (en) * | 1945-01-08 | 1947-05-06 | Northwestern Steel & Wire Co | Electric furnace control |
| US2447006A (en) * | 1946-02-23 | 1948-08-17 | Great Lakes Carbon Corp | Production of sulfo compositions |
-
1946
- 1946-09-28 US US69998146 patent/US2485094A/en not_active Expired - Lifetime
-
1948
- 1948-02-28 GB GB634748A patent/GB679616A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2485094A (en) | 1949-10-18 |
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