| 摘要 |
531,417. Tracks for folding and sliding doors &c. EDUCATIONAL SUPPLY ASSOCIATION, Ltd., and LEONARD, J. W. July 21, 1939, No. 21216. [Class 104 (ii)] In a folding and sliding door &c. of the type described in Specification 5828/13. [Class 20(iii)], in which the adjacent edges of each pair of leaves 5 are hinged together and each leaf is hinged at its other edge to a supporting upright 6 running on a rail 2, a guide rail 1 With curved ends 3 is engaged by swivelling runners located at the hinged joint between the leaves, so that the latter are guided into and from the folded position during the opening and closing of the door. Specification 367,542, [Group X], is referred to. |
