Traction Drives Drive illustrates principle of variable-speed transmissions using belt drives. Different reduction ratios obtainable by running belt over different pulley combinations. Unit useful in studying speeds and constructional requirements in variable speed drives. Gear Drive Drive illustrates conversion of a rotation into a proportional translation with limited travel. Gear sector on crank-operated drive shaft engages rack mounted on dovetail slide.
Drive shows dependence of speed relationships on geometry of drive.
Lever Mechanism Drive illustrates conversion of rotation into oscillation using a four-bar linkage. Center distance between shafts also adjustable. Useful in studying speed relationships and effect of dimensional changes on motion characteristics of a non-uniform motion drive.