B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
101/108
B41F 35/00 (2006.01) B41F 35/06 (2006.01)
Patent
CA 2017599
ABSTRACT OF THE DISCLOSURE A dry brush cleaning apparatus and method for cleaning printing press blanket cylinders is disclosed. In one embodiment, the invention comprises frame means spanning the width of the working surface of the blanket cylinder; a plurality of rollers, at least one of which is secured to each end of the frame means, the rollers being positioned to straddle the blanket and engage the bearer surfaces of the blanket cylinder, at least one of the rollers being a drive roller; a cleaning brush rotatably mounted on the frame means; drive means interconnecting the drive roller and the cleaning brush to cause power developed by frictional engagement of the drive roller and the bearer surface to impart rotation to the cleaning brush; and means for delaying a cleaning engagement of the cleaning brush with the blanket cylinder until after power generated by frictional engagement of the drive wheel with the bearer surface has caused the cleaning brush to begin rotating. In a preferred embodiment, the cleaning brush has a longitudinal cross section of differentially spaced bristle elements, such that in a plurality of areas, the bristle elements are densely packed, and in the spaces between the plurality of densely packed bristles, the bristles are sparsely placed, and the densely packed areas are offset circumferentially such that during rotation of the cleaning brush, while the apparatus is in a cleaning position, each area of the blanket is sequentially contacted by densely packed and sparsely placed bristles.
Kaczmarek Martin C.
Switall Thomas G.
Cassan Maclean
Kaczmarek Martin C.
Ryco Graphic Manufacturing Inc.
Switall Thomas G.
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