Improvements introduced in the object of the main patent num. 463.571, by: procedure, with his device for realizing, for the obtaining of monolithic concrete rings of rectangular section. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the object of the main patent no. 463,571, by "procedure, with its producing device, for obtaining monolithic concrete rings of rectangular section", characterized by the fact that by means of the process of concreting by gunitation, already mentioned in the main one, two very close phases are carried out, in time, first on the fixed lower mold, trihedral and with their faces forming, each one, an angle of 45º in relation to the horizontal floor and with dimensional limitations by laths on which the mobile upper mold, also trihedral and supplementary to the lower one on whose formwork, lost or divisible, the concreting of the three planes of the upper part is gunited, composing a monolithic cube that when passing the vertical by two of its more distant vertices has all its faces forming the same angle with the horizontal. (Machine-translation by Google Translate, not legally binding)