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US 4,355,554 AGranted
Web sectioning apparatus including an interference indicator
AssigneePhilip Morris Incorporated
InventorJoseph L. Gregory, III
Life of this patent
Estimating the term…
Abstract
A web sectioning apparatus wherein web sectioning occurs through engagement or interference of the cutting edges of a rotatable knife assembly with the surface of a drum and wherein an indicator is provided for generating a signal indicative of the force resulting from such interference.
Claims20
Web sectioning apparatus comprising:
- a rotatable drum;
- a rotatable knife assembly, said knife assembly including a cutting edge repetitively engagable with said drum upon rotation of said knife assembly and said drum, whereby a web carried by said drum may be sectioned during each such engagement;
- indicator means responsive to the engagement of said cutting edge and said drum for providing an indication of the force resulting from said engagement, said indicator means including:
- a force sensor for providing a signal indicative of said engagement force;
- and
- processing and display means responsive to said signal for providing an observable display, said processing and display means including first and second comparators responsive to said signal and to first and second predetermined signals respectively indicative of first and second preselected engagement forces, and first, second and third lamps responsive to said first and second comparators.
3 more elements
Web sectioning apparatus comprising:
- a rotatable drum;
- a rotatable knife assembly, said knife assembly including a cutting edge repetitively engageable with said drum upon rotation of said knife assembly and said drum, whereby a web carried by said drum may be sectioned during each such engagement;
- indicator means responsive to the engagement of said cutting edge and said drum for providing an indication of the force resulting from said engagement, said indicator means including a force sensor for providing a signal indicative of said engagement forces;
- and
- a support carrying said knife assembly, said support comprising:
- a housing having first and second coaxial bearing surfaces;
- a frame having first and second coaxial journals, said first and second journals being receivable on said first and second bearing surfaces, respectively, and said knife assembly being rotatably mounted to said frame;
- and
- clamp means for forcing said first and second journals against said first and second bearing surfaces to secure said frame to said housing, said clamp means being operable to release said journals;
- and said force sensor being held by said clamp means.
7 more elements
A method for sectioning a web, said method comprising the steps of:
- rotating a drum;
- rotating a knife assembly including a cutting edge to cause said cutting edge repetitively to cooperate with said rotating drum to section a web carried by said drum during each such cooperation;
- sensing the force between said rotating drum and said knife assembly during each such cooperation;
- providing a signal indicator of said force;
- comparing said signal with each of two other signals respectively representative of upper and lower values between which it is desired said force should remain;
- and
- providing a visual indication of whether said force exceeds said upper value, lies between said values, or falls below said lower value.
4 more elements
Dependencies are inferred from the claim text.