| 摘要 |
FIELD: civil engineering, building structures and their protection. SUBSTANCE: the device has a metal curtain protecting the vision glazed upper part of the front (and/or side) wall and withdrawable from the inner cavity of the wall lower part by means of a lever-cable tie, using cables fastened by one of their ends at the upper edge of the curtain; each cable on its right-hand or left-hand side is thrown over the pulley located in the wall ceiling part and its other end is connected to a lever which, when turned, withdraws the curtain. EFFECT: reduced labour content, improved architectural view, simplified procedure of construction. 4 dwg |
