Patent US3775241A successfully refreshed from Google Patents.
US3775241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for finishing the contour of paper making rolls
Assignee: Beloit Corp
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Filing: 1971-07-21
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Granted: 1973-11-27
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Expires: 1991-07-21
Abstract
Abstract A roll in a paper making machine carrying a web of paper over a portion of its circumference includes a grinding roll engaging the web carrying roll on a non-web carrying portion of its circumference for grinding the surface to a desired contour during actual operation of the roll and of the paper making machine. Means are provided for removing grinding residue from the non-web carrying circumferential surface of the rotating roll to prevent the grinding residue from being carried up beneath the web as it passes over the web-engaging circumference of the rotating roll.
Inventors
- 👤 E Justus
- 👤 E Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:02
CPC Classifications
D; D21; D21G; D21G3/00; D21G3/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
155 words
In combination in a paper making machine, first guide means positioned for guiding a web onto a roll, second guide means positioned for guiding a web leaving the roll, a rotary hard surfaced web carrying roll positioned between said first and second guide means for receiving the web on a web engaging portion of its circumference, said roll having surface contour changes responsive to temperature changes due to contact with the web, and a grinding means positioned between said first and second guide means in grindIng engagement with a non-web carrying circumferential surface of the roll for grinding the surface to a predetermined contour while the roll is rotating and carrying the web under operating conditions and means for removing grinding residue from the non-web carrying circumferential surface of the rotating roll to prevent the grinding residue from being carried up beneath the web as it passes over the web-engaging circumference of the rotating roll.
Claim 2
Dependent Claim
28 words
In combination in a paper making machine a structure in accordance with claim 2 wherein an elongate grinding means is provided coextensive with the length of said roll.
Claim 3
Dependent Claim
41 words
In combination in a paper making machine constructed in accordance with claim 3 including means for adjustably changing the contour of the grinding means at the location where it engages the roll surface for obtaining a predetermined contour of the roll.
Claim 4
Dependent Claim
55 words
In combination in a paper making machine constructed in accordance with claim 2 wherein said roll is a Yankee drier drum which is provided with means for internally heating the drum and said web has a substantial amount of moisture so that the surface of the drum is cooled with the vaporization of said moisture.
Claim 5
Dependent Claim
45 words
In combination in a paper making machine constructed in accordance with claim 2 wherein said grinding means includes an elongate rigid support coextensive with the web carrying roll with an abrasive material on the surface of said support in engagement with the web carrying roll.
Claim 6
Dependent Claim
42 words
In combination in a paper making machine constructed in accordance with claim 6 wherein said support is in the form of a backing roll parallel to the web carrying roll and the abrasive material is in the form of an abrasive paper.
Claim 7
Dependent Claim
57 words
In combination in a paper making machine constructed in accordance with claim 6 wherein the elongate rigid support is in the form of a backing roll parallel with the web carrying roll and includes means along the length of the roll for preventing deflection due to the force between the web carrying roll and the abrasive material.
Claim 8
Dependent Claim
50 words
In combination in a paper making machine constructed in accordance with claim 6 wherein the elongate rigid support is in the form of a backing roll parallel to the web carrying roll and means are provided for bowing the backing roll to raise a crown on the web carrying roll.
Claim 9
Dependent Claim
73 words
In combination in a paper making machine constructed in accordance with claim 2 wherein said grinding means includes an elongate backing roll having end supports and having adjustable supports along its length to control its contour relative to the web carrying roll, and an abrasive paper supported at one side of the backing roll that extends between the backing roll and web carrying roll for grinding the surface of the web carrying roll.
References Cited (Backward Citations)
US1059363A
Cited
US1510181A
Cited
US2267521A
Cited
US2403434A
Cited
US2698453A
Cited
US3014833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |