NEW SYSTEM belt drive KEYSTONE, between a drive wheel and another DRIVEN, that allows for several changes SPEED

摘要

New drive system V-belt between a drive pulley and a driven that restores several speed changes characterized by the fact that the drive pulley or the motor itself can move parallel along the driven pulley at a distance equal to the width thereof to fiin that only V-belt used to be inserted into certain grooves of several that have both pulleys set the transmission according to the transformation ratio speed proportional to the diameter of the slots chosen being obtainable in this way equal change speeds as the product of multiplying the number of slots of the drive pulley by the pulley.