I have the chain drive figured out for dough sheeter #1. I want to make DS #2 be a gear drive type. Can someone figure out how they keep the gears meshed together when they adjust the opening of the rollers ? I can't figure it out. Thanks.
The drawing you have posted above refers to the basic sheeters made by Caplain (as this brand is usual in France, I used and serviced one of them during some years). Each roller is driven by one gear, and these 2 gears are meshed togheter via a third one (parts #18 in the diagramn, made in nylon). On this sheeter the meshing is preserved thanks to the depth and the special shape of the teeth of these spur gears, which are able to remain in touch even if the rollers are fully opened (~35mm). This solution is simple, but I remember that this sheeter was noisy when adjusted on the maximum opening.
Tomorrow I will try to post you a photo of a manual sheeter which is driven by a chain + an idler . In my humble opinion, the chain is more reliable than the previous design but the bests sheeters I have seen (by far !) are made by the Rondo-Doge company : their driving system is incredibly well-engineered, with duplex-chains and rods which keep the gap between the shafts constant, and so a very smooth transmission.