Abstract: A blade and assembly provides for a blade that has a front beveled cutting edge and at least two recesses defined within the back, or non-cutting edge, of the blade. A substantially cylindrical cavity or bore extends inwardly into the blade from each recess, the bores being defined in planes that are parallel to the top and bottom surfaces of the blade. A plurality of “T-shaped” legs is provided, each leg having a cross bar or “foot” that is secured at one end of a rod. In the preferred embodiment, three such legs are used, although the present invention is not limited to that number. The rod of each leg is used for insertion into a blade bore. Means for fixing the position of the rod within the blade bore is also provided. This allows the blade to be properly positioned within the holder thereby compensating for blade wear.

Abstract: A blade and assembly provides for a blade that has a front beveled cutting edge and at least two recesses defined within the back, or non-cutting edge, of the blade. A substantially cylindrical cavity or bore extends inwardly into the blade from each recess, the bores being defined in planes that are parallel to the top and bottom surfaces of the blade. A plurality of “T-shaped” legs is provided, each leg having a cross bar or “foot” that is secured at one end of a rod. In the preferred embodiment, three such legs are used, although the present invention is not limited to that number. The rod of each leg is used for insertion into a blade bore. Means for fixing the position of the rod within the blade bore is also provided. This allows the blade to be properly positioned within the holder thereby compensating for blade wear.

Abstract: A system and method for preventing a broken printing web from wrapping about or otherwise fouling the blanket cylinders of printing press units. The system and method includes a web tensioning device located downstream of the printing press units for maintaining tension upon a broken web and pulling the web from the printing press units. The device includes a plurality of web disturbance detectors for detecting a wave, ripple or other disturbance indicative of a web break. A pair of anti-wrap rollers located above and below the web are engaged upon detection of a web break to engage the web between them to exert tension onto the web and pull it from the printing units. The anti-wrap rollers are rotated at a surface speed nominally greater than the surface speed of the printing rolls. The anti-wrap rollers include a plurality of opposed peak and valley portions which enable them to interlock and grip the web along a line of contact.

Abstract: A system and method for preventing a broken printing web from wrapping about or otherwise fouling the blanket cylinders of printing press units. The system and method includes a web tensioning device located downstream of the printing press units for maintaining tension upon a broken web and pulling the web from the printing press units. The device includes a plurality of web disturbance detectors for detecting a wave, ripple or other disturbance indicative of a web break. A pair of anti-wrap rollers located above and below the web are engaged upon detection of a web break to engage the web between them to exert tension onto the web and pull it from the printing units. The anti-wrap rollers are rotated at a surface speed nominally greater than the surface speed of the printing rolls. The anti-wrap rollers include a plurality of opposed peak and valley portions which enable them to interlock and grip the web along a line of contact.

Abstract: A system and method for preventing a broken printing web from wrapping about or otherwise fouling the blanket cylinders of printing press units. The system and method includes a web tensioning device located downstream of the printing press units for maintaining tension upon a broken web and pulling the web from the printing press units. The device includes a plurality of web disturbance detectors for detecting a wave, ripple or other disturbance indicative of a web break. A pair of anti-wrap rollers located above and below the web are engaged upon detection of a web break to engage the web between them to exert tension onto the web and pull it from the printing units. The anti-wrap rollers are rotated at a surface speed nominally greater than the surface speed of the printing rolls. The anti-wrap rollers include a plurality of opposed peak and valley portions which enable them to interlock and grip the web along a line of contact.