Tidland Corporation

Robert F Shinn

William R Miller

Richard M Holbert

Semion Stolyar

Peter P Ackerman

Blane G Boynton

A vertically adjustable web slitter is adapted to be supported by a track of a web-slitting machine, and comprising an input port adapted to receive pressurized fluid. Also, a control assembly is adapted to controllably transmit the pressurized fluid into any one of a set of first fluid passageways. A cylinder is adapted to receive the pressurized fluid from one of the first fluid passageways. A piston, having a first end and a second end, is set into the cylinder and is adapted to be driven within the cylinder by the pressurized fluid. Further, a set of actuators that are adapted to be driven by pressurized fluid are separated by the piston and cylinder from the set of first passageways. Finally, the piston defines at least one second fluid passageway extending from the first end to the second end. A first flexible hose connects each second fluid passageway to a first fluid passageway and a second flexible hose operatively connects each second fluid passageway to one of the actuators.

Easily adjusted web slitter

A device for automatically sharpening the circular cutting edge of a disk-like blade while it is rotatably mounted in a blade cartridge is disclosed. The sharpener includes a coupling assembly adapted to matingly retain the cartridge in the same manner that it is retained in a slitter machine. A rotary drive assembly is adapted to engage with and rotate the disk-like blade while in the cartridge. A blade sharpening head is adapted to engage and sharpen the disk-like blade as the blade is being rotated by the rotary drive assembly.

Automatic slitter blade sharpener

A power operated tool positioner for moving a tool parallel to a tool-positioning axis has a first tool-contacting member movable parallel to the tool-positioning axis for exerting a first pushing force against the tool, and a second tool-contacting member movable transverse to the tool-positioning axis for simultaneously exerting a second pushing force against the tool perpendicular to the first pushing force to resist any tendency of the first pushing force to tilt the tool obliquely relative to the tool-positioning axis. A third tool-contacting member is preferably provided for exerting a third pushing force to push the tool in the opposite direction from the first tool-contacting member, likewise while the second tool-contacting member is simultaneously pushing against the tool. The second tool-contacting member preferably exerts its pushing force prior to the commencement of the first or third pushing force. The three tool-contacting members are preferably interconnected so as to move in unison, the second tool-contacting member being movable relative to the tool parallel to the tool-positioning axis while simultaneously exerting its second pushing force against the tool.

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Camas, WA, United States of America

Robert F Shinn