| 摘要 |
1407848 Frame joints SVENSK DORRTEKNIK AB 13 Dec 1972 [13 Dec 1971] 57546/72 Heading E1J [Also in Division F2] A frame comprises elongate elements 1, 5 each having a projection 4, 6 extending inwardly of the frame, the end of one member 1 being of reduced thickness to provide a surface 2 for abutment of the end of member 5 and a recess 2' to receive projection 6 of member 5. Recess 2' is bounded by portions (3, 3'). Door sill 1a is shorter than lintel 1 and has a recess 2" only. The height of the frame is adjusted by cutting posts 5. |
