Patent US3603521A successfully refreshed from Google Patents.
US3603521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web winding apparatus
Assignee: Eastman Kodak Co
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Filing: 1969-06-02
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Granted: 1971-09-07
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Expires: 1989-06-02
Abstract
Abstract A web-winding system is disclosed as employing clutches so ganged on a common drive that wide webs may be wound simultaneously with, and to the same tightness as, narrower webs. The coupling of each such clutch is controlled by a computer which operates by maintaining constant the total end face area of the supply and rewind rolls. The drive speed is also computercontrolled to minimize the heat-producing slippage within such clutches.
Inventors
- 👤 Thomas R Ormsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:22
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
204 words
Apparatus for winding a web of any given width to a prescribed roll tightness; or for simultaneously winding a plurality of webs having respective widths, and which apparatus winds said plural webs all to the same prescribed roll tightness, comprising: a. shaft means and a drive therefor, b. a plurality of slip clutches each of which has input and output members and means for varying the coupling there Between, said clutches being so mounted on said shaft means that the respective input members of said clutches are all rotationally driven by said shaft means, the output member of each said clutch being dimensionally larger radially than its corresponding input member, the radial dimensions of said output members being alike, and said clutches being further so disposed on said shaft that respective tandem combinations thereof may wind about their respective output members webs of respective widths, c. signal responsive means cooperative with the variable coupling means of said clutches for simultaneously adjusting the respective couplings of said clutches, and d. means for producing and applying a signal proportional to the radius of a roll being wound by said apparatus to said signal responsive means, thereby to control the said couplings in accordance with said signal.
Claim 2
Dependent Claim
204 words
Apparatus for winding a web of any given width to a prescribed roll tightness; or for simultaneously winding a plurality of webs having respective widths, and which apparatus winds said plural webs all to the same prescribed roll tightness, comprising: a. shaft means and a drive therefor, b. a plurality of slip clutches each of which has input and output members and means for varying the coupling there Between, said clutches being so mounted on said shaft means that the respective input members of said clutches are all rotationally driven by said shaft means, the output member of each said clutch being dimensionally larger radially than its corresponding input member, the radial dimensions of said output members being alike, and said clutches being further so disposed on said shaft that respective tandem combinations thereof may wind about their respective output members webs of respective widths, c. signal responsive means cooperative with the variable coupling means of said clutches for simultaneously adjusting the respective couplings of said clutches, and d. means for producing and applying a signal proportional to the radius of a roll being wound by said apparatus to said signal responsive means, thereby to control the said couplings in accordance with said signal.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 including means for decreasing the speed of said drive in proportion to the radius of a roll being wound.
Claim 4
Dependent Claim
18 words
means for producing at that time a signal representing the angular rate of rotation of said supply roll,
Claim 5
Dependent Claim
18 words
means for producing at that time a signal representing the angular rate of rotation of said supply roll,
Claim 6
Dependent Claim
25 words
means for defining a predetermined short duration at or near the start of said web stripping, which duration occurs before said rewind roll grows appreciably,
Claim 7
Dependent Claim
25 words
means for defining a predetermined short duration at or near the start of said web stripping, which duration occurs before said rewind roll grows appreciably,
Claim 8
Dependent Claim
136 words
In a web handling system for slitting a supply web roll into a plurality of narrower rewind webs of respective widths, and for rewinding said narrower webs into rolls thereof, said rolls having respective end face areas, and which system has: a. a rewind shaft, and b. means for driving said shaft the improvement which comprises a plurality of similarly sized slip clutches having respective input and output members, and variable coupling means therebetween, said clutches being mounted on said rewind shaft, means for coupling the respective input members of said clutches to said rewind shaft for simultaneous rotation of said input members by said shaft, the output members of said clutches being dimensionally alike and larger radially than their corresponding input members, whereby wider rewind webs are wound on more clutches than narrower rewind webs.
Claim 9
Dependent Claim
136 words
In a web handling system for slitting a supply web roll into a plurality of narrower rewind webs of respective widths, and for rewinding said narrower webs into rolls thereof, said rolls having respective end face areas, and which system has: a. a rewind shaft, and b. means for driving said shaft the improvement which comprises a plurality of similarly sized slip clutches having respective input and output members, and variable coupling means therebetween, said clutches being mounted on said rewind shaft, means for coupling the respective input members of said clutches to said rewind shaft for simultaneous rotation of said input members by said shaft, the output members of said clutches being dimensionally alike and larger radially than their corresponding input members, whereby wider rewind webs are wound on more clutches than narrower rewind webs.
Claim 10
Dependent Claim
31 words
The system of claim 3 including means cooperative with said variable coupling means for increasing the coupling of said clutches in proportion to the radii of the rewind rolls being wound.
Claim 11
Dependent Claim
18 words
means for producing a signal representing the quotient of said lineal speed divided by said angular speed, and
Claim 12
Dependent Claim
18 words
means for producing a signal representing the quotient of said lineal speed divided by said angular speed, and
Claim 13
Dependent Claim
158 words
means cooperative with said last-named means during said predetermined duration for storing thereafter a signal proportional to the square of said quotient signal. 10 In a system for peeling a web off a supply roll thereof and rewinding same into another roll, said rolls having respective end face areas, and which system comprises: a. slip clutch means having input and output members and means for varying the coupling of said input and output members, b. means for driving the input member of said clutch, the output member of said clutch being coupled to drive said rewind roll, the improvement comprising computer means cooperative with the end face areas of the supply roll and a rewind roll for producing a control signal representative of the difference between a constant area and the total end face area of said supply and rewind rolls, and means for applying said control signal to said means for varying the coupling said clutch means.
Claim 14
Dependent Claim
158 words
means cooperative with said last-named means during said predetermined duration for storing thereafter a signal proportional to the square of said quotient signal. 10 In a system for peeling a web off a supply roll thereof and rewinding same into another roll, said rolls having respective end face areas, and which system comprises: a. slip clutch means having input and output members and means for varying the coupling of said input and output members, b. means for driving the input member of said clutch, the output member of said clutch being coupled to drive said rewind roll, the improvement comprising computer means cooperative with the end face areas of the supply roll and a rewind roll for producing a control signal representative of the difference between a constant area and the total end face area of said supply and rewind rolls, and means for applying said control signal to said means for varying the coupling said clutch means.
Claim 15
Dependent Claim
33 words
The system of claim 4 including means cooperative with said means for driving said shaft for decreasing the speed of said shaft in proportion to the radii of the rewind rolls being wound.
Claim 16
Dependent Claim
68 words
The system of claim 4 wherein said means for increasing clutch coupling comprises computer means cooperative with the end face areas of the supply roll and a rewind roll for producing a control signal representative of the difference between a constant area and the total end face area of said supply roll and said rewind roll, and means for applying said control signal to said variable coupling means.
Claim 17
Dependent Claim
62 words
The system of claim 6 including means for continuously producing a signal representing the instantaneous radius of said supply roll, and wherein said computer means is adapted to produce a signal representing the instantaneous radius of a rewind roll which is necessary to maintain constant the said end face area, said last named signal being applied to control the coupling said clutches.
Claim 18
Dependent Claim
107 words
The system of claim 7 including: a. means for producing and applying a signal representing the angular rate of rotation of said supply roll to said computer means, said computer means being further adapted to produce a signal representing the angular speed of said rewind shaft which is necessary to maintain constant the lineal travel of said web from its supply roll to its rewind roll, b. means for producing a signal representing an overdrive constant, and c. means for algebraically combining said rewind speed signal and said constant signal into a resultant signal, and for applying said resultant signal to said means for driving said shaft.
Claim 19
Dependent Claim
31 words
The system of claim 7 including a. means independent of said drive shaft for stripping web from said supply roll thereof, and b. means for producing and storing a reference signal
Claim 20
Dependent Claim
86 words
The system of claim 10 wherein said computer means includes means for producing a signal representing that angular speed for said rewind roll which is necessary to maintain constant the lineal speed of said web as it is rewound, and wherein said system includes a. means for producing a reference signal, b. means for algebraically combining said speed and reference signals into a resultant signal, and c. means for applying said resultant signal to said means for driving the said clutch input member in response thereto.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |