GB521838A - Improvements in or relating to the control of the tension of moving webs, cords, wires and like materials - Google Patents
Improvements in or relating to the control of the tension of moving webs, cords, wires and like materialsInfo
- Publication number
- GB521838A GB521838A GB729740A GB729740A GB521838A GB 521838 A GB521838 A GB 521838A GB 729740 A GB729740 A GB 729740A GB 729740 A GB729740 A GB 729740A GB 521838 A GB521838 A GB 521838A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tension
- control
- valve
- moving
- cords
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
- B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/044—Sensing web tension
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D15/00—Control of mechanical force or stress; Control of mechanical pressure
- G05D15/01—Control of mechanical force or stress; Control of mechanical pressure characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
521,838. Automatic control systems for moving coils. HOLMES & CO., Ltd., J. H., KASSELL, E. D., and WALTON, J. W. W. Sept. 29, 1938, No. 7297/40. Divided out of 520,727. [Class 38 (iv)] Tension in moving webs such as paper and other strip material, cords, wires &c. is maintained constant by an electronic valve the output of which is used to control'the rate of supply and/or take-up of the moving material. A jockey roller or other follower displaced in accordance with variations in the tension causes variation in the timing of electrical impulses applied to the grid circuit of the valve. Gas discharge or vacuum valves may be used. A transformer L<SP>4</SP> supplies current to the anode circuit of a valve L<SP>3</SP> which includes for example a solenoid A<SP>4</SP> controlling the force applied on a brake A' loading the working material A or the shunt winding of a tension control motor acting upon a stop which bears upon a web roll. Current is likewise supplied to a grid bias potentiometer L<SP>2</SP> and this bias is periodically removed at an instant in each cycle depending on the tension in the material. A block K<SP>2</SP> may be adjusted in relation to a commutator driven by a synchronous motor K<SP>9</SP> by movements of a jockey roller B so that contacts on the block are short-circuited by a shaped conducting plate K' to remove the grid bias and ignite the valve at the instant in each cycle requisite to maintain the tension constant. The jockey roller may be spring or weight controlled or counterbalanced and the tension may be adjusted by varying this control force or the potential applied to the transformer L<SP>4</SP>. Single phase full-wave rectifier arrangements and a three-phase half-wave rectifier arrangement are described. Arrangements using cam-driven interrupters adjustable about the axis of the cam are described. The invention may be applied to control the speed of the A.C. commutator motor driving each section of a paper-making machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB729740A GB521838A (en) | 1938-09-29 | 1938-09-29 | Improvements in or relating to the control of the tension of moving webs, cords, wires and like materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB729740A GB521838A (en) | 1938-09-29 | 1938-09-29 | Improvements in or relating to the control of the tension of moving webs, cords, wires and like materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521838A true GB521838A (en) | 1940-05-31 |
Family
ID=9830404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB729740A Expired GB521838A (en) | 1938-09-29 | 1938-09-29 | Improvements in or relating to the control of the tension of moving webs, cords, wires and like materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521838A (en) |
-
1938
- 1938-09-29 GB GB729740A patent/GB521838A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2825016A (en) | Electric motor control system | |
| US2774922A (en) | Step motor and control system therefor | |
| GB521838A (en) | Improvements in or relating to the control of the tension of moving webs, cords, wires and like materials | |
| US2597133A (en) | Control system | |
| US2748299A (en) | Automatic torque controller | |
| US2627592A (en) | Motor control system for regulating tension | |
| US2283121A (en) | Light responsive control system | |
| US2237985A (en) | Control system | |
| US2300988A (en) | Motor control system | |
| GB687351A (en) | Improvements in voltage regulators for electric generators | |
| GB677449A (en) | Improvements in electric welding machines and electrode sturctures therefor | |
| US3060357A (en) | Filament winding apparatus | |
| US2168170A (en) | Control system | |
| US2330759A (en) | Circuit-controlling apparatus | |
| GB664435A (en) | Improvements relating to electrical driving systems for textile machines | |
| US2226644A (en) | Voltage regulator | |
| US2300510A (en) | Regulating apparatus | |
| US1949685A (en) | Automatic control device for electric arc welding and other apparatus | |
| GB550964A (en) | Improvements in electric motor control systems for web winding equipment | |
| SU77023A1 (en) | Apparatus for automatic control of rolling mill press device | |
| US2412124A (en) | Voltage regulator | |
| GB535732A (en) | Improvements relating to the control of electrically operated winding or like mechanisms | |
| Gulliksen | Electronic devices for industrial control | |
| GB556501A (en) | Improvements in or relating to apparatus for regulating the output of dynamo-electric generators | |
| GB556016A (en) | Improvements in electrical control systems for maintaining predetermined speed relationships between co-operating electric motors |