Improvements in and relating to the manufacture of roller-shutters and other articulated slat assemblies

摘要

1,003,227. Manufacture of slat assemblies. HUNTER DOUGLAS INTERNATIONAL (QUEBEC) Ltd. May 22 1962 [May 22, 1961], No. 19722/62. Heading E1J. [Also in Divisions B3 and F2] Movable apparatus for use on rolled edge joints of metal slat assemblies in order to prevent the slats slipping longitudinally, comprises a solenoid operated joint-opening hammer 51, a slide plate 67 from which plastic plugs 81, cut from a roll 87, are fed into the joints, and a solenoid operated punch 36 which indents the metal slats into the plugs.