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US3877335A Expired / Lapsed US ⏱️ 0.0 years remaining

Circular blade apparatus for slitting webs of material

Assignee: Jagenberg Werke AG
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Filing: 1973-10-16
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Granted: 1975-04-15
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Expires: 1993-10-16
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Abstract

Abstract In an apparatus for slitting a web of material such as paper continuously passed therethrough and including a first circular blade rotatably mounted about an axially fixed first shaft, a cooperating second circular blade rotatably mounted about an axially displaceable second shaft, and a carriage for said second shaft, the improvement which comprises a first pair of spaced parallel leaf springs each connected fixedly at one end to said carriage, coupling block carried by the other ends of said first pair of leaf springs, a second pair of spaced parallel leaf springs each connected at one end to said coupling block, the planes of said second pair of springs being substantially perpendicular to those of the first pair of springs and perpendicular to the axis of said second shaft, said second pair of springs at their other ends carrying said second shaft, means for displacing said coupling block relative to said carriage with flexing of said first pair of springs thereby to displace the axis of the second circular blade toward the axis of said first circular blade, and means for displacing the other ends of said second pair of springs with flexing thereof thereby to displace the axis of said second circular blade longitudinally and bring the second circular blade against the first circular blade in working relationship relative to said first circular blade.

Inventors

  • 👤 Hellmuth Lange

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 10:48
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/02; B26D5/04; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7809; Y10T83/783; Y10T83/7834; Y10T83/7847

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 226 words
In an apparatus for slitting a web of material such as paper continuously passed therethrough and including a first circular blade rotatably mounted about an axially fixed first shaft, a cooperating second circular blade rotatably mounted about an axially displaceable second shaft, and a carriage for said second shaft, the improvement which comprises a first pair of spaced parallel leaf springs each connected fixedly at one end to said carriage, a coupling block carried by the other ends of said first pair of leaf springs, a second pair of spaced parallel leaf springs each connected at one end to said coupling block, the planes of said second pair of springs being substantially perpendicular to those of the first pair of springs and perpendicular to the axis of said second shaft, said second pair of springs at their other ends carrying said second shaft, means for displacing said coupling block relative to said carriage with flexing of said first pair of springs thereby to displace the axis of the second circular blade toward the axis of said first circular blade, and means for displacing the other ends of said second pair of springs with flexing thereof thereby to displace the axis of said second circular blade longitudinally and bring the second circular blade against the first circular blade in workiNg relationship relative to said first circular blade.
Claim 2
Dependent Claim 226 words
In an apparatus for slitting a web of material such as paper continuously passed therethrough and including a first circular blade rotatably mounted about an axially fixed first shaft, a cooperating second circular blade rotatably mounted about an axially displaceable second shaft, and a carriage for said second shaft, the improvement which comprises a first pair of spaced parallel leaf springs each connected fixedly at one end to said carriage, a coupling block carried by the other ends of said first pair of leaf springs, a second pair of spaced parallel leaf springs each connected at one end to said coupling block, the planes of said second pair of springs being substantially perpendicular to those of the first pair of springs and perpendicular to the axis of said second shaft, said second pair of springs at their other ends carrying said second shaft, means for displacing said coupling block relative to said carriage with flexing of said first pair of springs thereby to displace the axis of the second circular blade toward the axis of said first circular blade, and means for displacing the other ends of said second pair of springs with flexing thereof thereby to displace the axis of said second circular blade longitudinally and bring the second circular blade against the first circular blade in workiNg relationship relative to said first circular blade.
Claim 3
Dependent Claim 49 words
The apparatus according to claim 1, wherein said means for displacing said coupling block relative to said carriage comprises a cooperating first piston and first cylinder each connected to one of said coupling block and said carriage, and means for displacing said first piston relative to said first cylinder.
Claim 4
Dependent Claim 59 words
The apparatus according to claim 1, wherein said means for displacing the other ends of said second pair of springs comprises a cooperating second piston and second cylinder each operatively connected to one of said coupling block and said other ends of said second pair of springs, and means for displacing said second piston relative to said second cylinder.
Claim 5
Dependent Claim 59 words
The apparatus according to claim 2, wherein said means for displacing the other ends of said second pair of springs comprises a cooperating second piston and second cylinder each operatively connected to one of said coupling block and said other ends of said second pair of springs, and means for displacing said second piston relative to said second cylinder.

References Cited (Backward Citations)

US453380A Cited
US3041907A Cited
US3186281A Cited
US3511123A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-04-14 1978-10-14 1979-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-04-14 1982-10-14 1983-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-04-14 1986-10-14 1987-04-15 $7700.00 Window Closed / Lapsed

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