US3743153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for handling a web
Assignee: Eastman Kodak Co
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Filing: 1972-05-30
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Granted: 1973-07-03
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Expires: 1992-05-30
Abstract
Abstract Apparatus and method for handling a plastic web during the manufacture thereof wherein after the web exits from a stretching station a slide is provided for diverting defective web material downward to a scrap handling area. When satisfactory material is thereafter produced the web may be automatically threaded into an accumulator assembly for take-up of the web so that the downstream end of the web may be stopped to permit the defective web material to be severed from the satisfactory web material. After being severed from the defective material the satisfactory material is spliced onto a web that has been previously threaded through to the finishing end of the apparatus where a wind-up roll is positioned for storage of the satisfactory web material. The accumulator assembly comprises first and second sets of rollers wherein the first set is stationary and the second set is movable and positionable below the path of the defective web portion. The second set is movable from its lower position where it is nestable in recesses formed in the slide to allow the defective web to pass thereover, to a raised position where it is above the first set. The movement of the second set of rollers between the rollers of the first set is utilized to thread the web in a serpentine path between the rollers of the accumulator assembly.
Inventors
- 👤 D Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:01
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/24; B26; B26D; B26D1/00; B26D1/01; B26D1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
343 words
An apparatus for handling an advancing web having a defective portion to be removed therefrom, which apparatus comprises: first means for guiding the web; second means for guiding the web, said second means being relatively movable from a position generally below and spaced from said first means to a position generally above and spaced from said first means so as to form therewith a web accumulator assembly wherein said web may be threaded through said assembly in a generally serpentine path; means located downstream of said accumulator assembly for receiving satisfactory-web material; means for guiding a defective portion of the web towards a scrap handling area so that said defective-web portion is advanced in a direct path above said second means and below said first means; means for at least substantially slowing the advancing speed of the portion of the web downstream of said accumulator assembly relative to the advancing speed of the portion of the web upstream of said accumulator assembly so as to produce an excess of web material in said accumulator assembly; and means for a. urging the relative movement of said second means while in guiding relation with said advancing web from a position wherein said second means is positioned generally below said first means to a position wherein said second means is positioned generally above said first means so as to cause said web to be threaded about said first and second means in said generally serpentine path, and for b. urging the relative movement of said second means generally above and away from said first means while said first and second means are guiding said advancing web in said serpentine path and while said downstream web portion is relatively slowed to thereby accumulate said excess of web material whereby the accumulation of said excess web material and the relative slowing of said downstream web portion facilitate the removal of the defective web portion from satisfactory web material located upstream of said defective web portion so that only satisfactory web material may be advanced to said receiving means.
Claim 2
Independent Claim
343 words
An apparatus for handling an advancing web having a defective portion to be removed therefrom, which apparatus comprises: first means for guiding the web; second means for guiding the web, said second means being relatively movable from a position generally below and spaced from said first means to a position generally above and spaced from said first means so as to form therewith a web accumulator assembly wherein said web may be threaded through said assembly in a generally serpentine path; means located downstream of said accumulator assembly for receiving satisfactory-web material; means for guiding a defective portion of the web towards a scrap handling area so that said defective-web portion is advanced in a direct path above said second means and below said first means; means for at least substantially slowing the advancing speed of the portion of the web downstream of said accumulator assembly relative to the advancing speed of the portion of the web upstream of said accumulator assembly so as to produce an excess of web material in said accumulator assembly; and means for a. urging the relative movement of said second means while in guiding relation with said advancing web from a position wherein said second means is positioned generally below said first means to a position wherein said second means is positioned generally above said first means so as to cause said web to be threaded about said first and second means in said generally serpentine path, and for b. urging the relative movement of said second means generally above and away from said first means while said first and second means are guiding said advancing web in said serpentine path and while said downstream web portion is relatively slowed to thereby accumulate said excess of web material whereby the accumulation of said excess web material and the relative slowing of said downstream web portion facilitate the removal of the defective web portion from satisfactory web material located upstream of said defective web portion so that only satisfactory web material may be advanced to said receiving means.
Claim 3
Dependent Claim
25 words
The invention according to claim 1 wherein said slowing means comprises a pair of spaced rollers with a nip opening therebetween for nipping said web.
Claim 4
Dependent Claim
14 words
The invention according to claim 1 wherein said receiving means comprises a wind-up Roll.
Claim 5
Dependent Claim
48 words
The invention according to claim 1 wherein said defective web portion guiding means comprises a slide and said slide includes recesses for receiving said second means in nesting relationship so as to allow said defective web portion to be advanced along said slide and above said second means.
Claim 6
Dependent Claim
81 words
The invention according to claim 1, said first means comprising a first set of rollers that are spaced apart in a generally horizontal direction and said second means comprising a second set of rollers that are also spaced apart in a generally horizontal direction in offset relationship relative to the rollers of said first set so as to allow the rollers of said second set to be relatively moved in a generally vertical direction between the rollers of said first set.
Claim 7
Dependent Claim
42 words
The invention according to claim 1 wherein said defective web portion guiding means is adapted to receive said second means so as to allow said defective web portion to be advanced above said defective portion guiding means and above said second means.
Claim 8
Dependent Claim
15 words
The invention according to claim 6 wherein said defective portion guiding means comprises a slide.
Claim 9
Dependent Claim
16 words
The invention according to claim 1 wherein said slide includes recesses for receiving said second means.
Claim 10
Dependent Claim
44 words
The invention according to claim 7 wherein said slide includes a movable slide portion and means for moving said movable slide portion into operative position to guide said defective portion and into retracted position to provide access to areas beneath said movable slide portion.
Claim 11
Dependent Claim
45 words
The invention according to claim 9 wherein said slowing means includes a movable first roller located downstream of said accumulator assembly and means for lowering said movable first roller from a web contacting position to a nesting position that is below said movable slide portion.
Claim 12
Dependent Claim
40 words
The invention according to claim 10 wherein said slowing means further includes a second roller adapted to be positioned in nip forming relationship with said movable first roller when said movable first roller is placed into said web contacting position.
References Cited (Backward Citations)
US1941597A
Cited
US3583619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |