Slitting apparatus
US4142455A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Oct 5, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/7826
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus is disclosed for slitting a web of material such as paperboard utilizing at least two rotatable turrets disposed one above the other. Each turret has a pair of shafts adapted to have blades selectively positionable thereon by way of a master shifter which adjusts the blades for the next production run on one of the shafts which is in an inoperative position while the other shaft on each turret is in an operative position. PAC BACKGROUND Slitting apparatus particularly of the type known as an automatic slitter-scorer which includes either a computer or a mini-processor have been proposed heretofore. See U.S. Pat. Nos. 3,651,723; 3,961,547; 3,646,418; 3,831,502, 3,587,374; 4,010,677; 4,033,217. In the apparatus disclosed in said patents, blades are moved along a shaft to a predetermined position and then secured to the shaft for rotation therewith. There is a need for a slitting apparatus such as a paper-board slitter-scorer which facilitates automatic adjustment of blades disposed in an inoperative position while other blades are in an operative position with respect to the moving web. There is a need for such apparatus which is structurally interrelated in a manner so tha…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.