Improvements in vibrating screening machines, for classification of graves, sands and other products (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in vibrating screening machines, for classification of gravel, sands and other products that is characterized because the vibrating platform that constitute the various screens of the machine, is mounted on suspension formed at the base of springs arranged in two ball joints, for its displacement in all the senses. (Machine-translation by Google Translate, not legally binding)