I have a Uni 1 manufactured in the 60s, still being cleaned but also being used to print. I have two observations/questions which I welcome help on…
1. The drive gear (if that is the correct term) oscillates when the press runs and the rollers are engaged. A woodruff key was missing and replaced but do these gears go out of true over the years? It seems true on a flat on the surface (using a steel rule) but I suspect that the large hole in center of the gear is not “square” as it should be.
2. Using the black knobs to adjust the roller height is interesting. With the knobs all the way up (turned counter clockwise) so there is no height added to the rollers, things seem to print quite well. And, if I begin to turn counterclockwise, things get bound up along that drive gear – not good. No horrible sounds of crunching or anything, but is the adjustment of height using these knobs that gross a process or should a small turn of the black knob make a significant difference? Sometimes I wonder if my rollers are seated properly, but if they were not, then I would expect not to get much good printing.
Any advice or help is greatly appreciated. Best – Neil