Some improvements in the manufacture of self-orienting rotating wheels. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the manufacture of self-adjusting rotating wheels, characterized by comprising the constitution of the rotating wheel by a hollow tapered part achieved by molding and made of a lightweight synthetic material, which has two symmetrical recesses in the areas corresponding to the ends of its major axis, the tread being determined on the surface of the part comprised between both housings, the same being destined to the assembly of individual blocks of material endowed with self-lubricating characteristics, in which the stumps that determine the axis of the tire are inserted. horizontal rotation of the wheel. (Machine-translation by Google Translate, not legally binding)