US3780960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web splicing apparatus
Assignee: Rengo Co Ltd
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Filing: 1971-10-06
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Granted: 1973-12-25
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Expires: 1991-10-06
Abstract
Abstract A web splicing apparatus has a pair of bilaterally disposed suction boxes with a plurality of conveyor belts passing over the suction boxes and conveying liner paper toward the opposite terminal sections of the boxes while the liner paper is being sucked by the action of said suction boxes. Outlet rolls and press rolls disposed above the opposite terminal sections of the suction boxes guide the liner paper which has been transported by the conveyor belts over the suction boxes upwardly by holding the paper therebetween. Guide plates guide the liner paper transported by said rolls to a next apparatus for treating the paper. Means is provided for controlling the press rolls so that they separate from the outlet rolls or move into pressure contact with the outlet rolls during paper feeding for splicing the tip of a liner paper transported by one of the conveyor belts with another liner paper. A cutter is also provided for severing the butt of the liner paper after splicing, and a pair of holder means for holding webs is also provided.
Inventors
- 👤 M Tokuno
- 👤 T Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:44
CPC Classifications
B; B65; B65H; B65H19/00; B65H19/10; B65H19/18; B65H19/1857; B65H19/1873; B65H19/1805; B65H19/1826; B65H19/1836; B65H2301/00; B65H2301/40; B65H2301/46; B65H2301/464; B65H2301/46414; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176; B65H2701/1762
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
A web splicing apparatus comprising a pair of bilaterally disposed suction boxes, a plurality of conveyor belts on said suction boxes capable of conveying liner paper toward the opposed terminal sections of said boxes as said liner paper is held on said belts by the action of said suction boxes, a holder means for holding a supply of liner paper at each remote end of said suction boxes, outlet rolls and press rolls disposed above the opposed terminal sections of the suction boxes for sending the liner paper which has been transported by the conveyor belts on the suction boxes upwardly by holding said paper therebetween, guide plates above said rolls for guiding the liner paper transported by said rolls to a next required apparatus, a means coupled to the press rolls for moving the press rolls for separating said rolls from said outlet rolls in the paper feeding state and for bringing said press rolls into pressure contact with said outlet rolls in the splicing state for splicing the tip of liner paper transported by the conveyor belts on one of the suction boxes with the liner paper transported by the belts on the other suction boxes, and at least one cutter along the path of the liner paper for severing the liner paper after splicing.
Claim 2
Dependent Claim
217 words
A web splicing apparatus comprising a pair of bilaterally disposed suction boxes, a plurality of conveyor belts on said suction boxes capable of conveying liner paper toward the opposed terminal sections of said boxes as said liner paper is held on said belts by the action of said suction boxes, a holder means for holding a supply of liner paper at each remote end of said suction boxes, outlet rolls and press rolls disposed above the opposed terminal sections of the suction boxes for sending the liner paper which has been transported by the conveyor belts on the suction boxes upwardly by holding said paper therebetween, guide plates above said rolls for guiding the liner paper transported by said rolls to a next required apparatus, a means coupled to the press rolls for moving the press rolls for separating said rolls from said outlet rolls in the paper feeding state and for bringing said press rolls into pressure contact with said outlet rolls in the splicing state for splicing the tip of liner paper transported by the conveyor belts on one of the suction boxes with the liner paper transported by the belts on the other suction boxes, and at least one cutter along the path of the liner paper for severing the liner paper after splicing.
Claim 3
Dependent Claim
87 words
A web splicing apparatus as claimed in claim 1 in which a part of said plurality of conveyor belts on the suction box are porous conveyor belts, and the parts of the suction box over which said porous conveyor belts run have suction slits therein over which the porous belts run, and the remaining conveyor belts consist of material to which double-faced adhesive tapes applied to the liner paper are at most only slightly adherable, said two types of belts being disposed alternately across the suction box.
Claim 4
Dependent Claim
87 words
A web splicing apparatus as claimed in claim 1 further comprising a paper feed roll at the remote end of each suction box for taking up liner paper travelling onto the conveyor, and a press roll disposed above said feed roll, elevation means connected to said press roll for moving said press roll away from said feed roll and toward and into pressure contact with said feed roll, whereby liner paper pulled out of the holder means can be inserted between said feed roll and press roll.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |