Improvements in the construction of arts for construction. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of troughs, for construction applicable to masonry works, essentially characterized by the fact that part of a rectangular plate that is curved to form the bottom and bent at its ends to a vertical position then disposed to both lateral sides of sheet, with its curved lower edge following the curvature of the bottom, and with a fold on said edge, where they support the longitudinal edges of the bottom for its subsequent fixing by electrical spot welding. (Machine-translation by Google Translate, not legally binding)