Light or heavy weight plaster or wooden board installation folding apparatus for ceiling, has jack stand shape bar with adjustable extension bar, and bar whose length is lower than that of jack stand shape bar

摘要

The apparatus has a jack stand shape bar (1) with an adjustable extension bar (2), two bars (4) with extension bars (15) pivoting in a horizontal cross piece of the extension bar (2), and a bar (6) with an adjustable extension bar (7). The bar (6) pivots due to a joint (9) on a cross piece (5). The length of the bar (6) is lower than that of the jack stand shape bar (1).