Improvements in and relating to pivoted wing doors
681,016. Doors. SAGL, K., KLANNER, R., and SAMESCH, K. R., (trading as INSTITUT FUR TECHNISCHE FORSCHUNG UND ENTWICKLUNG DIPL. ING. SAGL & CO., KOMMANDITGES). Dec. 20, 1949 [Dec. 22, 1948], No. 32638/49. Class 20(iii) A pivoted wing door with one-part wings or double folding wings has one or more guideways for guiding the inner end portions of the wings, the or each guideway being coupled to door-operating mechanism so as to move away from the door frame, when the door is opened, and towards the door frame when the door is closed. One part wings 1, Fig. 3, are pivotally attached to radial arms 3 connected to rotatable hollow posts 4 and carry rollers 5 which engage a guide rail 6. The door posts are rotated by levers 7 connected at one end to levers 11, operated by a doubleacting piston, and at the other end engaging the rail 6. Thus, as the door post 4 is rotated to open the door, the rail 6 is moved away from the door frame so that the edge of the wing does not scrape along the packing strip on the door frame and similarly as the door is closed the guide moves back towards the door frame. The outer parts 3a of the two-part wings 1a, 3a, Fig. 4, are connected directly to door posts 4 rotated by levers 7, 11 and the inner parts 1a carry rollers 5 engaging two guide rails 6a. The latter are pivoted at their outer ends 13 and engage in a pin and slide connection 15 at their inner ends, being moved towards and away from the door frame as the door is closed and opened by the mechanism which actuates the levers 11. The rollers 5 may comprise two parts 16, 17, engaging a rail 6 and guide 18, as shown, Fig. 5.