US 4,058,059 AGranted

Mechanism for cleaning a cylinder of a printing press

OwnerHans Jacob Moestueinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

An improved mechanism for cleaning the driven roller in a printing press is described. In the mechanism, a wash cloth may be fed from a magazine roller over a pressure roller to a take-up roller. The pressure roller may be brought to bear against the surface of the cylinder with the wash cloth therebetween. The wash cloth is wet by spraying cleaning fluid thereon immediately prior to its encountering the pressure roller. The wet wash cloth is thus brought into contact with the surface of the cylinder which is then rotated against the cloth to cleanse the surface. After the surface is clean, dry cloth may be brought into contact with the cylinder by merely not activating the fluid spray. Means are provided for driving the pressure roller through a constant angle at each change of the cloth and, via a slip clutch, for maintaining a consistent tension on the cloth regardless of the length of cloth collected on the take-up roller.

Claims11

Dependent claims

A mechanism for cleaning a driven cylinder of a printing press comprising a wash cloth web. a magazine roller from which the wash cloth web is incrementally unwound, means for wetting the wash cloth web with a cleaning fluid, a pressure mechanism which may be pressed against the cylinder to be cleaned and over which the wash cloth web is conducted, a take-up roller upon which used portions of the wash cloth are wound up, and means for moving the pressure mechanism into and out of contact with the cylinder, the pressure mechanism including a pressure roller ,drive means for moving the pressure roller through a constant angle for each increment of the wash cloth web, and secondary drive means including a slip clutch connecting the pressure roller to the take-up roller, the secondary drive means being such that the angle of rotation of the take-up roller subtends an arc the length of which is at least equal to the length of arc subtended by the concurrent angle of rotation of the pressure roller whereby a constant predetermined tension is maintained in the wash cloth web.

Dependencies are inferred from the claim text.