US4026176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for setting slitter heads
Assignee: S&S Corrugated Paper Machinery Co Inc
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Filing: 1975-10-20
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Granted: 1977-05-31
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Expires: 1995-10-20
Abstract
Abstract Slitting apparatus for trimming the edges of a web of corrugated board and longitudinally cutting the web into a plurality of narrow webs is constructed with selectively operable fluid operated means that clamps the working heads in adjusted positions along the length of their respective drive shafts. The fluid operated means includes a plurality of spring steel pressure bars extending parallel to the length of each shaft and disposed within different grooves thereof, with each pressure bar being operatively positioned to clamp a plurality of heads in operating positions by engaging keys secured to these heads. The keys extend beyond the faces of the heads and for each of the heads include notches that provide clearance for the extending portions of the keys secured to adjacent heads. The drive shafts are parallel to each other, and one of these shafts is longitudinally movable after the heads are locked in place so that the knives mounted thereon positively mate with or engage cooperating knives on the other shaft.
Inventors
- 👤 Gunther Weiskopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:58
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/26; B26D7/2614; B26D7/2621; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7809; Y10T83/783; Y10T83/7834; Y10T83/7838; Y10T83/7847; Y10T83/869; Y10T83/8776
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
223 words
Apparatus for longitudinally slitting a web traveling along a feed path, said apparatus including a drive shaft extending transverse to said path, first and second tool supporting heads mounted on said shaft for adjusting movement along the length of said shaft and to be rotated thereby, selectively operable locking means for maintaining said heads in adjusted positions along the length of said shaft while the latter rotates, another drive shaft parallel to said drive shaft, third and fourth tool supporting heads mounted on said another shaft for adjusting movement along the length of said another shaft and to be rotated thereby, another selectively operable locking means for maintaining said third and fourth heads in adjusted positions along the length of said another shaft while the latter rotates, first, second, third and fourth tools mounted on the respective first, second, third and fourth heads and rotatable therewith, a first and second plurality of retainers mounting the respective first and second tools to the respective first and second heads for relative axial movement therebetween, first and second biasing means for the first and second heads urging the latter in a first axial direction toward the respective third and fourth tools, said retainers including portions limiting relative axial movement in said first direction between said first and second tools and the respective first and second heads.
Claim 2
Dependent Claim
223 words
Apparatus for longitudinally slitting a web traveling along a feed path, said apparatus including a drive shaft extending transverse to said path, first and second tool supporting heads mounted on said shaft for adjusting movement along the length of said shaft and to be rotated thereby, selectively operable locking means for maintaining said heads in adjusted positions along the length of said shaft while the latter rotates, another drive shaft parallel to said drive shaft, third and fourth tool supporting heads mounted on said another shaft for adjusting movement along the length of said another shaft and to be rotated thereby, another selectively operable locking means for maintaining said third and fourth heads in adjusted positions along the length of said another shaft while the latter rotates, first, second, third and fourth tools mounted on the respective first, second, third and fourth heads and rotatable therewith, a first and second plurality of retainers mounting the respective first and second tools to the respective first and second heads for relative axial movement therebetween, first and second biasing means for the first and second heads urging the latter in a first axial direction toward the respective third and fourth tools, said retainers including portions limiting relative axial movement in said first direction between said first and second tools and the respective first and second heads.
Claim 3
Dependent Claim
49 words
Apparatus as set forth in claim 1 also including means mounting said shaft and said another shaft for limited relative axial movement from a head adjusting position to a working position to bring said third and fourth tools and the respective first and second tools into final cooperating relationship.
Claim 4
Dependent Claim
25 words
Apparatus as set forth in claim 1 in which each of said retainers includes a screw and said portions include the heads of said screws.
Claim 5
Dependent Claim
50 words
Apparatus as set forth in claim 1 in which the first biasing means includes an individual spring each retained by an individual retainer of said first plurality of retainers, and said second biasing means includes an individual spring each retained by an individual retainer of said second plurality of retainers.
Claim 6
Dependent Claim
49 words
Apparatus as set forth in claim 4 also including means mounting said shaft and said another shaft for limited relative axial movement from a head adjusting position to a working position to bring said third and fourth tools and the respective first and second tools into final cooperating relationship.
Claim 7
Dependent Claim
36 words
Apparatus as set forth in claim 1 in which the first and second biasing means are partially loaded when axial movement of said first and second tools in said first direction is limited by said retainers.
Claim 8
Dependent Claim
25 words
Apparatus as set forth in claim 6 in which each of said retainers includes a screw and said portions include the heads of said screws.
Claim 9
Dependent Claim
49 words
Apparatus as set forth in claim 7 also including means mounting said shaft and said another shaft for limited relative axial movement from a head adjusting position to a working position to bring said third and fourth tools and the respective first and second tools into final cooperating relationship.
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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |