Fig 129
This method is employed for sun or draught curtains, and sometimes for small concert curtains. Another method of curtain manipulation in which the curtains draw up in drapery form is illustrated by Figure [127]. To accomplish this effect the pair of curtains are pleated to size, as back view Figure [127A]. Spread flat on the floor, and with a cord attached at A, the inside corner of the curtain, a quarter circle is struck from the outside corner to a corresponding position on the front edge of the curtain.
FIG. 127A.
FIG. 129A.
Rings are sewn to this line, and a cord which is attached to B is threaded through the rings, passed over a pulley at C, and across and over a large pulley at D, and brought down to the floor, as E.
A pull on the cord at E now causes the cord to draw up through the rings on the curtain, the material gathering into folds because of its weight, and the release of the cord allows the curtain to swing back again into place. By arranging both curtains in this manner and drawing them simultaneously a pretty draped opening is produced, as Figure [127].
For a heavy pair of curtains, attach the cords, after passing over pulley D, to a counter weight, and either attach a separate cord to the B cord immediately above A, the centre of the curtains, and bring it over D and down to F, so that a pull at F sets the pulley and weight in motion; or arrange as explained later for Figure [129A].
If it is desired that the front edges may draw completely up to the pulley, forming two festoons, as Figure [128], more sweep must be allowed on the front edge than on the top, and can be easily calculated by moving the stationary end of the marking cord out beyond A the distance desired to give the required sag to the bottom edge when drawn up (see X, Figure [127A], and the dotted sweep).