Improvements in window shutters

摘要

364,530. Window shutters. DEMEULENAERE, M., Grand Hotel, Coqsur-Mer, Belgium. June 26, 1930, No. 19448. Convention date, July 13, 1929. [Class 20 (iii).] A roller shutter V wound on to a drum A is balanced progressively by a series of blades or articulated sections La suspended by a belt or cable C from a secondary drum A<1> and oppositely wound. When the shutter is raised, all the sections La 'are supported by the floor, while as the shutter is being lowered the sections are successively raised and supported by the cable C. Each section may comprise several blades arranged side by side, in accordance with the weight of the shutter to be balanced, and flats s limit the relative movement between the sections.