Educational Gear Examples 3 - Lantern

My Educational Mechanical Examples SeriesThis model is one of my educational mechanical mechanism examples on 80mm x 80mm base plates.You can find all models of the series in this collection => [Mechanical Mechanism Examples]This setThis present set includes:Lantern gearsExternalRack and rack pinionInternalChain & SprocketMultiple Gear Brief descriptionLantern gears are gears that mesh with pins instead of conventional teeth.If the pins have zero thickness, the tooth profile of the lantern pinion becomes epicycloid, and that of the lantern rack becomes a cycloid. For pins with finite thickness, the actual tooth shape can be obtained by offsetting the epicycloid or cycloid by the radius of the pins. When pins are made rotatable, the friction between the pins and the lantern gear becomes pure rolling friction, with