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US 4,458,591 AGranted
Rotary printing press
AssigneeHarris Graphics Corporation
InventorGlenn A. Guaraldi
Life of this patent
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AssigneeHarris Graphics Corporation
InventorGlenn A. Guaraldi
Estimating the term…
A rotary printing press comprises a rotatable blanket cylinder and a plate cylinder disposed in rolling engagement with said blanket cylinder. A skew-adjusting means varies the angle between the blanket and plate cylinders. A form roll is disposed in rolling engagement with the plate cylinder. Plate cylinder throw off means moves the plate cylinder to disengage the plate cylinder from the blanket cylinder. The plate cylinder throw off means comprises means for disengagement of said plate cylinder from said blanket cylinder without skew movement of the plate cylinder. Form roll-plate cylinder adjustment means is provided for adjusting the center-to-center distance between the form roll and the plate cylinder. A cam has surface means for maintaining the center-to-center distance between the form roll and the plate cylinder as the plate cylinder is thrown off the blanket cylinder and as the skew adjusting means varies the angle between said blanket and plate cylinders.
A rotary printing press comprising a frame, a first cylinder rotatably supported in said frame, a second cylinder rotatably supported in said frame, throw off means actuatable to throw off said second cylinder from said first cylinder, skew means for effecting skew movement of said second cylinder with respect to said first cylinder, said throw off means comprising means for effecting throw off of said second cylinder from said first cylinder without skew movement of said second cylinder, a rotatable form roll, means for supporting said form roll in said frame, means for adjusting the center-to-center distance between said form roll and said second cylinder to a desired distance, and means for maintaining said desired center-to-center distance between said form roll and said second cylinder during skew movement of said second cylinder and during throw off of said second cylinder from said first cylinder.
A rotary printing press comprising a rotatable blanket cylinder, a plate cylinder disposed in rolling engagement with said blanket cylinder, skew-adjusting means for varying the angle between said blanket and plate cylinders, a form roll disposed in rolling engagement with said plate cylinder, plate cylinder throw off means for moving said plate cylinder to disengage said plate cylinder from said blanket cylinder, said plate cylinder throw off means comprising means for disengagement of said plate cylinder from said blanket cylinder without skew movement of said plate cylinder, form roll-plate cylinder adjustment means for adjusting the center-to-center distance between said form roll and said plate cylinder, and a cam having surface means for maintaining the center-to-center distance between said form roll and said plate cylinder as said plate cylinder is thrown off said blanket cylinder and as said skew adjusting means varies the angle between said blanket and plate cylinders.
Dependencies are inferred from the claim text.