GB1233445A - - Google Patents
Info
- Publication number
- GB1233445A GB1233445A GB1233445DA GB1233445A GB 1233445 A GB1233445 A GB 1233445A GB 1233445D A GB1233445D A GB 1233445DA GB 1233445 A GB1233445 A GB 1233445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tension
- fluidic
- output
- line
- web
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/44—Automatic controllers pneumatic only
- G05B11/48—Automatic controllers pneumatic only with auxiliary power
- G05B11/52—Automatic controllers pneumatic only with auxiliary power in which the output signal represents a discontinuous function of the deviation from the desired value, i.e. discontinuous controllers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
-
- 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
-
- 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
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)
- Control Of Fluid Pressure (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
1,233,445. Feeding webs. BELOIT CORP. 16 Oct., 1968 [11 Dec., 1967], No. 49125/68. Heading B8R. [Also in Division G3] A fluidic control system for regulating the tension in a moving web 12 comprises a tension detector 32 constituted by a nozzle 34 associated with a fluid supply 33 and a flapper gate 31 controlled by a roller 28 spring-biased against the web 12; an arrangement of fluidic devices responsive to the output from the detector 32 and producing a control signal on line 77 representative of variations in the tension from a desired value; a piston 24 in a cylinder 25 connected to the line 77; and tension control rollers 13, 14 associated with a brake disc 19 and a brake 21 operated by the piston 24 which is so operated, by the signal in line 77, that the web tension is maintained at the desired value. The arrangement of fluidic devices includes one proportional amplifier 37 connected between the output from the detector 32 and an indicator 42 for the web-tension, and further proportional amplifiers 46, 53, 92, 93, 94 which are associated with a fluid oscillator 78, fluidic bi-stable devices 54, 64 and fluidic AND gates 59, 60 interconnected, as shown, to provide a pulse output on device 64, this pulse output being width-modulated in accordance with the amount of error existing between the sensed tension and the desired value, this pulse output being applied to control valves 70, 71 the output from which forms the control signal in line 77.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68950967A | 1967-12-11 | 1967-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1233445A true GB1233445A (en) | 1971-05-26 |
Family
ID=24768770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1233445D Expired GB1233445A (en) | 1967-12-11 | 1968-10-16 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3485427A (en) |
DE (1) | DE1811740B2 (en) |
ES (1) | ES361569A1 (en) |
FI (1) | FI52502C (en) |
FR (1) | FR1599878A (en) |
GB (1) | GB1233445A (en) |
SE (1) | SE345436B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707650A (en) * | 1969-05-22 | 1972-12-26 | Westinghouse Electric Corp | Protective system for series capacitors |
BE794186A (en) * | 1972-01-21 | 1973-07-18 | Wean United Inc | METHOD AND APPARATUS FOR TENSIONING A BAND |
US4253597A (en) * | 1979-07-09 | 1981-03-03 | Moore Business Forms, Inc. | Loose loop feed control apparatus |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755032A (en) * | 1951-12-17 | 1956-07-17 | Beloit Iron Works | Tension regulator and guide and control means therefor |
US2737963A (en) * | 1952-05-22 | 1956-03-13 | Bailey Meter Co | Control systems |
US2945637A (en) * | 1957-07-19 | 1960-07-19 | Westinghouse Electric Corp | Paper mill winder drives |
US3101915A (en) * | 1962-05-23 | 1963-08-27 | Cameron Machine Co | Apparatus for controlling tension in a running web |
US3266516A (en) * | 1962-12-18 | 1966-08-16 | Bailey Meter Co | Amplifier relay for pneumatic systems |
US3240058A (en) * | 1963-04-08 | 1966-03-15 | Mount Hope Machinery Ltd | Continuous tension monitor for webfeeding mechanisms |
US3270960A (en) * | 1964-09-11 | 1966-09-06 | Sperry Rand Corp | Fluid sensor |
US3330457A (en) * | 1965-02-11 | 1967-07-11 | Mount Hope Machinery Ltd | Total tension monitor and control system |
US3387619A (en) * | 1966-03-01 | 1968-06-11 | Scans Associates Inc | Pneumatic amplifier |
-
1967
- 1967-12-11 US US689509A patent/US3485427A/en not_active Expired - Lifetime
-
1968
- 1968-10-16 GB GB1233445D patent/GB1233445A/en not_active Expired
- 1968-10-22 FI FI682979A patent/FI52502C/en active
- 1968-11-26 SE SE16054/68A patent/SE345436B/xx unknown
- 1968-11-29 DE DE1811740A patent/DE1811740B2/en active Granted
- 1968-11-29 FR FR1599878D patent/FR1599878A/fr not_active Expired
- 1968-12-10 ES ES361569A patent/ES361569A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES361569A1 (en) | 1970-11-01 |
DE1811740C3 (en) | 1974-06-20 |
FI52502B (en) | 1977-05-31 |
US3485427A (en) | 1969-12-23 |
FI52502C (en) | 1977-09-12 |
SE345436B (en) | 1972-05-29 |
DE1811740A1 (en) | 1969-10-23 |
DE1811740B2 (en) | 1973-11-22 |
FR1599878A (en) | 1970-07-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |