Tidland Corporation

Other

Semion Stolyar

William R Miller

Richard M Holbert

Thomas Cleveland Kirk

Daniel E Tooke

Robert F Shinn

Robert M Houze

William C Miller

Thomas D Kirk

An electronically controlled web-slitter includes dual electric motors whose functions may be controlled by an electronic controller accessed either on the chassis of the web-slitter or by way of a computer coupled to the electronic controller. Vertical and side-shift blade set-up and functions are accurately controlled. The device includes a dovetail fitting for providing structural connection of parts, and a follower engaged with said first motor for translating rotational movement into vertical motion, and multiple sensors for sensing and controlling motor positions within the device.

Web-slitter with electronic motor control

A web material roll rotatable retention assembly, comprising a shaft adapted to be inserted into a web material roll core and having a hydrogel filled chamber is disclosed. A hydrogel pressure applying assembly controllably applies pressure to the hydrogel and an outward pressure applying assembly pushes pressure applying members outwardly in response to the pressure of the hydrogel.

Hydraulic web roll shaft

An expansible core shaft assembly adapted to retain a set of web spool cores in axially fixed positions while permitting rotational slippage of the web spool cores. The assembly may comprise a shaft defining at least one channel. An expansible bladder is retained in the channel and a set of first lugs and a set of second lugs are retained in the channel radially outwardly of the expansible bladder with first and second lugs mutually interspersed. Each lug has a bladder facing surface defining an indentation. The first lugs define a first indentation in a first position and the second lugs define a second indentation that is sufficiently distinct from said first position to reduce the effect that the radial position of each core stop has on the radial positions of its neighbors. In a separate embodiment the assembly may comprise a channel accommodating a first expansible bladder and a bracket positioned radially outwardly from the first bladder and defining a second channel, which accommodates a second bladder. Core stops are set into the second channel radially outwardly of the second bladder. The first and second bladders are independently expansible so that the core stops may be released for rearrangement independently of being retracted.

Slip shaft assembly having core axial position fixing mechanism

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.

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Beaverton, OR, United States of America

Semion Stolyar