Device for applying pressure to a swatch for detecting debris on rolls of paper
OwnerRobert A. Emersoninventor
Life of this patent
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Abstract
A contamination gauge for paper manufacturing for detecting the debris on paper includes a hand-held housing having a gripping surface and a plunger carried axially by the housing having a pressure application surface disposed on one end of the plunger for applying a predetermined force. A force exerting element is carried within the interior of the housing for exerting the predetermined pressure when the housing is moved relative to the plunger. An indicator indicates when the housing has moved sufficiently for generating the predetermined amount of pressure. Also a method for testing the propensity of paper rolls to lint debris on printing machines is disclosed.
Claims20
A portable pressure applicator for applying a predetermined amount of pressure to a sheet for contacting a roll of paper or paperboard while said roll is rotating on a roller for testing the debris on said roll, said applicator comprising:
- a hand-held housing having a gripping surface, an interior and a plunger channel;
- a plunger carried axially within said housing interior extending through said plunger channel;
- said housing being moveable relative to said plunger from a first position to a second position for exerting said predetermined pressure on said roll;
- a force exerting element carried by said housing for exerting said predetermined pressure when said housing is moved to said second position;
- an indicator communicating with said force exerting element for indicating when said force exerting element is exerting said predetermined pressure;
- a pressure application surface carried by said plunger for transferring said force to said roll;
- whereby a predetermined pressure may be applied to a roll by sliding said housing a sufficient distance for manipulating said force exerting element to generate a predetermined amount of pressure for application to said roll.
A portable pressure applicator for applying a predetermined amount of pressure to a sheet for contacting a roll of paper or paperboard while said roll is rotating on a roller for testing the debris on said roll, said applicator comprising:
- a hand-held housing having a gripping surface, an interior and a plunger channel;
- a plunger carried axially within said housing interior extending through said plunger channel;
- said housing being moveable relative to said plunger from a first position to a second position for exerting said predetermined pressure on said roll;
- a housing spring abutment carried by a first end of said housing;
- a plunger spring abutment carried by said plunger;
- a first spring carried by said plunger between said housing spring abutment and said plunger spring abutment, said spring having a compressed position generating a spring pressure generally equal to said predetermined pressure when said housing is moved to said second pressure exerting position;
- an indicator carried by said plunger indicating when said spring has been compressed for generating said predetermined pressure;
- a pressure application surface carried by said plunger for transferring said pressure to said target;
- whereby a predetermined pressure may be applied to a roll by sliding said housing a sufficient distance along said plunger compressing said spring a sufficient distance to generate a predetermined amount of pressure for application to said roll.
A method for testing the debris on a roll of paper while said roll is rotating on a roller, said method comprising:
- providing a pressure applicator designed to apply a predetermined amount of pressure;
- providing a colored sheet of fabric having a rough surface;
- positioning said colored sheet of fabric against the surface of said roll;
- positioning said pressure applicator against the surface of said sheet of fabric;
- applying said predetermined amount of pressure from said pressure applicator to said sheet of fabric;
- maintaining said application of said predetermined amount of pressure on said sheet for a predetermined period of time for collecting debris from said roll;
- removing said pressure from said sheet;
- removing said sheet from said roll.
Dependencies are inferred from the claim text.