Claims
- 1. 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.
- 2. 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.
- 3. 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.
- 4. 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.
- 5. 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.
- 6. 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.
- 7. 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.
- 8. 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.
Parent Case Info
This application is a continuation-in-part of my copending U.S. application Ser. No. 456,012 filed Mar. 29, 1974, and issued Apr. 20, 1976 as U.S. Pat. No. 3,951,024.
US Referenced Citations (4)
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
456012 |
Mar 1974 |
|