Improvements in tubular elements, made of light alloys and capable of resisting great mechanical stresses

摘要

683,830. Metal tubes. COMPAGNIE GENERALE DE VILVORDE COGEVIL SOC. ANON. April 26, 1950 [April 27, 1949; Dec. 17, 1949; Feb. 21, 1950], No. 10304/50. Classes 99 (i) and 99 (ii) [Also in Group XXXI] Elements of light alloy, e.g. for cycles or buildings, are formed from two semi-tubular complementary parts 1, 2 each comprising at least two integral shank portions a, b at an angle to one another and having interengaging stepped edges 3. The parts may be increased in thickness at the edges and have internal projections for engaging a tube and be coupled together by a screwed external ring, or coupling of the parts may be effected by a hooping ring embracing a spigot of one of the shank portions.