Improvements in the lifting machines of great tonnage mobile (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the object of the main patent no. 225.006, on improvements in the lifting machines of large-tonnage mobiles, characterized in that inside a housing there is a lifting tree with its corresponding rack of special teeth, on which an pinion of four teeth, which is integral with a steering wheel or gear wheel for endless. (Machine-translation by Google Translate, not legally binding)