GB1229977A - - Google Patents
Info
- Publication number
- GB1229977A GB1229977A GB1229977DA GB1229977A GB 1229977 A GB1229977 A GB 1229977A GB 1229977D A GB1229977D A GB 1229977DA GB 1229977 A GB1229977 A GB 1229977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mill
- counters
- gates
- reset
- control
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Metal Rolling (AREA)
- Control Of Multiple Motors (AREA)
Abstract
1,229,977. Control of two or more motors. WESTINGHOUSE ELECTRIC CORP. 5 Aug., 1968 [28 Sept., 1967], No. 37257/68. Heading H2J. [Also in Division G3] A rolling mill has a feed reel 14 and a deflection roller 24, guiding metal strip 12 into the mill, each driving a pulse generator 30, 26, the speed responsive signals from these two generators being compared and when their difference is such as to indicate that the reel 14 is nearly empty a signal is issued to a master speed control 20 to slow down the mill. Means are provided to adjust the system for differing strip thickness. The outputs of the two pulse generators 26, 30 are applied to gates 40, 42 under the control of a timer 38 which periodically switches the gates on so that counters 48, 50 can count the pulses. When the gates are off a difference detector compares them and then the counters are reset ready for the next cycle. One counter 50 is reset to zero but the other is reset to an offset value by a selector 54, the value being dependent on the thickness of the strip and the running speed of the mill. The selector 54 also varies the on/off ratio of the timer 38 to provide for optimum use of the counters 48, 50.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67134767A | 1967-09-28 | 1967-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1229977A true GB1229977A (en) | 1971-04-28 |
Family
ID=24694143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1229977D Expired GB1229977A (en) | 1967-09-28 | 1968-08-05 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3518857A (en) |
| BE (1) | BE721554A (en) |
| FR (1) | FR1581927A (en) |
| GB (1) | GB1229977A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3834648A (en) * | 1972-03-15 | 1974-09-10 | Ampex | Apparatus and method for sensing diameter of tape pack on storage reel |
| JPS5752301B2 (en) * | 1974-06-01 | 1982-11-06 | ||
| US3979080A (en) * | 1975-03-27 | 1976-09-07 | Westinghouse Electric Corporation | Analog automatic slowdown system |
| US4103840A (en) * | 1976-12-14 | 1978-08-01 | Westvaco Corporation | Stretchable material rewinding machine |
| JPS6012711B2 (en) * | 1977-12-29 | 1985-04-03 | ソニー株式会社 | Magnetic tape winding amount display method |
| US4232369A (en) * | 1978-07-31 | 1980-11-04 | Tokyo Shibaura Denki Kabushiki Kaisha | Method of controlling the deceleration of a reversing mill |
| DE3101360C2 (en) * | 1981-01-17 | 1985-10-31 | Jagenberg AG, 4000 Düsseldorf | Device for delaying the drive of a winding device for webs of material |
| JPS59116731A (en) * | 1982-12-24 | 1984-07-05 | Canon Inc | Film feeding device |
| US5086964A (en) * | 1988-07-29 | 1992-02-11 | Amplas, Inc. | Dual drive web feed apparatus and method |
| AU643143B2 (en) * | 1991-06-21 | 1993-11-04 | Sumitomo Heavy Industries Ltd. | A method of and an apparatus for producing wire |
| US5376219A (en) * | 1991-09-26 | 1994-12-27 | Sealed Air Corporation | High speed apparatus for forming foam cushions for packaging purposes |
| DE50005414D1 (en) * | 2000-05-17 | 2004-04-01 | Grapha Holding Ag | Method and device for producing a roll from printed products |
| CN114959364A (en) * | 2022-07-01 | 2022-08-30 | 温州医科大学附属口腔医院 | Degradable Zn-xRE alloy and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2342767A (en) * | 1942-02-21 | 1944-02-29 | Westinghouse Electric & Mfg Co | Control system |
| US3151507A (en) * | 1961-05-23 | 1964-10-06 | Datex Corp | Speed control system |
| BE621475A (en) * | 1961-08-29 | |||
| US3161365A (en) * | 1962-02-23 | 1964-12-15 | Gen Electric | Uncoiler control system |
| US3208683A (en) * | 1962-12-03 | 1965-09-28 | Gen Electric | Automatic control systems for rolling mills |
| US3421708A (en) * | 1966-09-26 | 1969-01-14 | Davy & United Eng Co Ltd | Control of strip |
-
1967
- 1967-09-28 US US671347A patent/US3518857A/en not_active Expired - Lifetime
-
1968
- 1968-08-05 GB GB1229977D patent/GB1229977A/en not_active Expired
- 1968-09-26 FR FR1581927D patent/FR1581927A/fr not_active Expired
- 1968-09-27 BE BE721554D patent/BE721554A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3518857A (en) | 1970-07-07 |
| FR1581927A (en) | 1969-09-19 |
| BE721554A (en) | 1969-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] |