US3581963A
Expired / Lapsed
US
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Web guide apparatus and method
Assignee: ROCKFORD SERVO CORP
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Filing: 1969-02-14
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Granted: 1971-06-01
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Expires: 1989-02-14
Abstract
Abstract A web guide apparatus and method in which the lateral position of a traveling web passing over a tiltable web guide roller is sensed at a location in advance of the tiltable web guide roller and the web leaving the tiltable web guide roller is caused to double back to a point adjacent a plane through the web edgesensing location and normal to the plane of tilting movement of the web guide roller. The web is guided so as to enter the tiling web guide roller in a plane generally paralleling the plane of motion of the web guide roller.
Inventors
- 👤 Robert D Rule
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:00
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/038
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
212 words
A web guide apparatus including a main web guide roller extending transverse to a traveling web, means mounting the main web guide roller for tilting movement in a plane of motion generally paralleling the plane of the web as the latter enters the main guide roller in relatively opposite directions from a neutral position perpendicular to the desired path of web travel, at least one web edge sensor positioned to sense the lateral position of one edge of the web at a location in advance of the main guide roller, means controlled by said web edge sensor for tilting said main web guide roller in a direction to correct the deviation of the web from the desired path of web travel, and an exiting web guide roller mounted for tilting movement with the main web guide roller and positioned with relation to the main web guide roller and the web edge sensor such that the web passing from the main web guide roller over the exiting web guide roller is caused to double back with relation to web entering the main guide roller and exit tangentially from the exiting web guide rolLer in an exiting plane, the projection of which exiting plane extends approximately through said location of the web edge sensor.
Claim 2
Dependent Claim
212 words
A web guide apparatus including a main web guide roller extending transverse to a traveling web, means mounting the main web guide roller for tilting movement in a plane of motion generally paralleling the plane of the web as the latter enters the main guide roller in relatively opposite directions from a neutral position perpendicular to the desired path of web travel, at least one web edge sensor positioned to sense the lateral position of one edge of the web at a location in advance of the main guide roller, means controlled by said web edge sensor for tilting said main web guide roller in a direction to correct the deviation of the web from the desired path of web travel, and an exiting web guide roller mounted for tilting movement with the main web guide roller and positioned with relation to the main web guide roller and the web edge sensor such that the web passing from the main web guide roller over the exiting web guide roller is caused to double back with relation to web entering the main guide roller and exit tangentially from the exiting web guide rolLer in an exiting plane, the projection of which exiting plane extends approximately through said location of the web edge sensor.
Claim 3
Dependent Claim
230 words
In a web-handling system, a web guide apparatus including a main web guide roller extending transverse to a traveling web, means mounting the main web guide roller for tilting movement in plane of motion generally paralleling the plane of the web as the latter enters the main guide roller, a web edge sensor for sensing the lateral position of at least one edge of the traveling web, and means controlled by the web edge sensor for tilting the main web guide roller in a direction to correct the deviation of the web from the desired path of web travel, the improvement wherein the web edge sensor is positioned adjacent the plane of the web entering the main web guide roller at a location in advance of the main web guide roller to sense the lateral position of web entering the main guide roller, and an exiting web guide roller mounted for tilting movement with the main web guide roller and positioned with relation to the main web guide roller and the web edge sensor such that the web passing from the main web guide roller over the exiting web guide roller is caused to double back with relation to the web entering the main guide roller to a point adjacent a plane through the web edge sensor and normal to the plane of motion of the main web guide roller.
Claim 4
Dependent Claim
230 words
In a web-handling system, a web guide apparatus including a main web guide roller extending transverse to a traveling web, means mounting the main web guide roller for tilting movement in plane of motion generally paralleling the plane of the web as the latter enters the main guide roller, a web edge sensor for sensing the lateral position of at least one edge of the traveling web, and means controlled by the web edge sensor for tilting the main web guide roller in a direction to correct the deviation of the web from the desired path of web travel, the improvement wherein the web edge sensor is positioned adjacent the plane of the web entering the main web guide roller at a location in advance of the main web guide roller to sense the lateral position of web entering the main guide roller, and an exiting web guide roller mounted for tilting movement with the main web guide roller and positioned with relation to the main web guide roller and the web edge sensor such that the web passing from the main web guide roller over the exiting web guide roller is caused to double back with relation to the web entering the main guide roller to a point adjacent a plane through the web edge sensor and normal to the plane of motion of the main web guide roller.
Claim 5
Dependent Claim
52 words
A web guide apparatus according to claim 2 wherein said main web guide roller during tilting movement thereof is disposed tangent to an arcuate path having an arc center located in advance of the main web guide roller and generally perpendicular to the plane of the web entering the main guide roller.
Claim 6
Dependent Claim
42 words
A web guide apparatus according to claim 3 including an entering web guide roller extending transverse to the web in rolling engagement therewith adjacent said arc center and connected to said main web guide roller to move therewith about said arc center.
Claim 7
Dependent Claim
201 words
A web guide apparatus including a main web guide roller extending transverse to a traveling web, means including a movable support mounting said main web guide roller for movement in a plane of motion in which the main web guide roller is disposed generally tangent to a curved path, the effective center of which curved path is spaced from that side of main web guide roller at which the web enters the main web guide roller, at least one web edge sensor mounted to sense the lateral position of the edge of the web entering the main web guide roller at a location in advance of the main web guide roller, and an exiting web guide roller mounted on said movable support for movement with the main web guide roller and at a position offset relative to the main web guide roller in a direction toward the effective center of said curved path and such that the web passing from the main web guide roller and over the exiting web guide roller doubles back and exits tangentially from the exiting roller in an exiting plane, the projection of which exiting plane extends approximately through said location of the web edge sensor.
Claim 8
Dependent Claim
201 words
A web guide apparatus including a main web guide roller extending transverse to a traveling web, means including a movable support mounting said main web guide roller for movement in a plane of motion in which the main web guide roller is disposed generally tangent to a curved path, the effective center of which curved path is spaced from that side of main web guide roller at which the web enters the main web guide roller, at least one web edge sensor mounted to sense the lateral position of the edge of the web entering the main web guide roller at a location in advance of the main web guide roller, and an exiting web guide roller mounted on said movable support for movement with the main web guide roller and at a position offset relative to the main web guide roller in a direction toward the effective center of said curved path and such that the web passing from the main web guide roller and over the exiting web guide roller doubles back and exits tangentially from the exiting roller in an exiting plane, the projection of which exiting plane extends approximately through said location of the web edge sensor.
Claim 9
Dependent Claim
28 words
A web guide apparatus according to claim 5 wherein said plane of motion is generally parallel to the plane of the web entering said main web guide roller.
Claim 10
Dependent Claim
61 words
A web guide apparatus according to claim 5 including an entering web guide roller mounted on said movable support adjacent said effective center of said curved path for movement, said entering web guide roller being disposed in rolling engagement with the web and supporting the web entering said main web guide roller in a plane generally paralleling said plane of motion.
Claim 11
Independent Claim
154 words
A method of laterally guiding a moving web comprising, passing the web over a main web guide roller tiltable in a plane of motion from a neutral position in which the main web guide roller is perpendicular to the desired path of web travel, sensing the lateral position of the web entering the main web guide roller at a sensing location in advance of the main web guide roller, tIlting the main web guide roller in a direction to correct the deviation of the web from the desired path of travel, causing the web passing from the main web guide roller to double back over an exiting web guide roller and exit tangentially from the exiting web guide roller in an exiting plane, the projection of which exiting plane extends approximately through said sensing location, and maintaining the exiting web guide roller parallel to the main web guide roller during tilting of the latter.
Claim 12
Independent Claim
154 words
A method of laterally guiding a moving web comprising, passing the web over a main web guide roller tiltable in a plane of motion from a neutral position in which the main web guide roller is perpendicular to the desired path of web travel, sensing the lateral position of the web entering the main web guide roller at a sensing location in advance of the main web guide roller, tIlting the main web guide roller in a direction to correct the deviation of the web from the desired path of travel, causing the web passing from the main web guide roller to double back over an exiting web guide roller and exit tangentially from the exiting web guide roller in an exiting plane, the projection of which exiting plane extends approximately through said sensing location, and maintaining the exiting web guide roller parallel to the main web guide roller during tilting of the latter.
Claim 13
Dependent Claim
31 words
The method of claim 8 including guiding the web entering the main web guide roller in a plane generally parallel to the plane of motion of the main web guide roller.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |