US3750973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method of web slitting and winding
Assignee: Sprague Electric Co
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Filing: 1971-04-06
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Granted: 1973-08-07
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Expires: 1991-04-06
Abstract
Abstract A means and method for winding webs cut from sheet material into a compact and uniform rolls by constant contact with a pair of rotating members under a substantially uniform pressure. The roll during winding being associated with means for maintaining the roll in contact with the pair of rotating members and so that the roll axis of rotation elevates along a substantially straight line upon the accumulation of its convolutions. A tension is applied to the webs throughout travel from the slitting of the sheet material to the winding roll.
Inventors
- 👤 G Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
B; B65; B65H; B65H18/00; B65H18/08; B65H18/14; B65H18/16; B65H18/145; B65H19/00; B65H19/22; B65H19/2284; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/414; B65H2301/4148; B65H2301/41486; B65H2404/00; B65H2404/40; B65H2404/43
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
206 words
In an apparatus for winding a web of material by drawing the web under tension in which tension is applied to the web by a roller and the web is wound into a roll against a drum of larger diameter than the roller, the improvement comprising a friction roll, a tension means against which the web is drawn, said friction roll being juxtaposed adjacent to but spaced from said tension means, at least one arm having a working end positionable adjacent the spacing between the friction roll and the tension means, means at the working end for supporting a winding roll of the web and a flexible mount at the idle end of the arm comprised of a stationary member fixed on said apparatus and having an axis in alignment with the axis of the winding roll and means integral with the idle end of the arm in continuous sliding engagement with said stationary member and said idle end being rotatable around the axis of the fixed member, and means positioned adjacent the arm to restrict lateral movement of the arm in the direction of the axis of the stationary member but not restrict said rotatable and sliding capabilities of said arm on said stationary member.
Claim 2
Dependent Claim
206 words
In an apparatus for winding a web of material by drawing the web under tension in which tension is applied to the web by a roller and the web is wound into a roll against a drum of larger diameter than the roller, the improvement comprising a friction roll, a tension means against which the web is drawn, said friction roll being juxtaposed adjacent to but spaced from said tension means, at least one arm having a working end positionable adjacent the spacing between the friction roll and the tension means, means at the working end for supporting a winding roll of the web and a flexible mount at the idle end of the arm comprised of a stationary member fixed on said apparatus and having an axis in alignment with the axis of the winding roll and means integral with the idle end of the arm in continuous sliding engagement with said stationary member and said idle end being rotatable around the axis of the fixed member, and means positioned adjacent the arm to restrict lateral movement of the arm in the direction of the axis of the stationary member but not restrict said rotatable and sliding capabilities of said arm on said stationary member.
Claim 3
Dependent Claim
22 words
In apparatus as claimed in claim 1, means for slitting sheet material into a plurality of webs adjacent to said tension means.
Claim 4
Dependent Claim
46 words
In apparatus as claimed in claim 2, a plurality of arms each having a working end positionable adjacent the spacing between the friction roll and the tension means, and means at said working ends for supporting a winding roll of one of said plurality of webs.
Claim 5
Dependent Claim
30 words
In apparatus as claimed in claim 1, a forked end formed in the Arm at the idle end and the slot of the forked end slideably engaging the stationary member.
Claim 6
Dependent Claim
25 words
In apparatus as claimed in claim 1, a core connected to the working end of the arm, the winding roll being wound on the core.
Claim 7
Dependent Claim
48 words
In apparatus as claimed in claim 1, a pair of bifurcated arms, working ends of said arms connected to the winding roll, said stationary member being a stay rod received in the fork at the idle end of the arms, said arms being movable independently of each other.
Claim 8
Dependent Claim
26 words
In apparatus as claimed in claim 1, a surface on the tension means having a lower coefficient of friction than the surface on the friction roller.
Claim 9
Dependent Claim
40 words
Apparatus as claimed in claim 1, wherein a rotating drum having a low friction surface is the tension means and having means for rotating the drum at a slightly lower peripheral speed than the peripheral speed of the friction roller.
Claim 10
Dependent Claim
33 words
In apparatus as claimed in claim 1, means for applying pressure on the arm to control the pressure of the contacts between the winding roll and the tension means and the friction roller.
Claim 11
Independent Claim
203 words
A method of winding a web of material into a compact roll in which the material is drawn under tension from a point where the web is free from previous restraint to a winding roll including the steps of contacting the web of material at a winding roll of the material by a friction surfaced roller to apply a tension to the web, drawing the web across the surface of a rotating drum by the applied tension, winding the tensed web into the winding roll between and in contact with the drum and the friction surfaced roller, the drum and the roller having the same type of motion of rotation, rotating the roller at a peripheral velocity slightly higher than the peripheral speed of the drum, rotating the winding roll at substantially the speed of the drum, positioning the winding roll in said contact with the drum and the friction surfaced roller on an elongated member, holding the winding roll in contact with both the drum and the friction surfaced roller by pressure on the elongated member rotating said elongated member around a fixed axis removed from the winding roll and simultaneously moving the elongated member longitudinally with respect to the fixed axis.
Claim 12
Independent Claim
203 words
A method of winding a web of material into a compact roll in which the material is drawn under tension from a point where the web is free from previous restraint to a winding roll including the steps of contacting the web of material at a winding roll of the material by a friction surfaced roller to apply a tension to the web, drawing the web across the surface of a rotating drum by the applied tension, winding the tensed web into the winding roll between and in contact with the drum and the friction surfaced roller, the drum and the roller having the same type of motion of rotation, rotating the roller at a peripheral velocity slightly higher than the peripheral speed of the drum, rotating the winding roll at substantially the speed of the drum, positioning the winding roll in said contact with the drum and the friction surfaced roller on an elongated member, holding the winding roll in contact with both the drum and the friction surfaced roller by pressure on the elongated member rotating said elongated member around a fixed axis removed from the winding roll and simultaneously moving the elongated member longitudinally with respect to the fixed axis.
Claim 13
Dependent Claim
54 words
The method of winding as claimed in claim 10, in which the tension applied to the web at the contacting of the winding roll and friction roller extends along the web without restraint to the point of slitting a sheet of material into a plurality of webs which is the point of last restraint.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |