As in the HP-series the distinguishing feature of the HPV-series is the upper roller drive. In the case of the HPV-series a gear ratio of 1:3,5 ensures a uniform motion during the printing process. Heavy duty double chains that drive the gearing are enshrined by a safety cover on the opposite side of the press as the driving wheel. Easily accessible screws are used to bring in the slack on the drive chains. If the spindles are loosened, the upper roller is raised by spring pressure. Shims of leather or cardboard can be placed under the pressure spindles to give more flexibility to the press (useful to compensate for irregularities when printing woodcuts or lino).The spokes of the star wheel are made of stainless steel. The upper roller has self lubricating bronze bearings and the lower roller ball bearings. Various stands available. The simplest stand is the HPO-60, just a detachable frame of welded steel tubes. The HPOD-60 stand (as pictured here above) has two plywood shelves. The HPODW-60 stand has also plywood shelves but is also fitted with casters (double brake). The press can also be fitted with a heavy round hand wheel, in stead of the standard spoke wheel.
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