German imperial patent no. 350034 for a shedding device for hand-weaving apparatus, filed by Gertrud Witte of Bern, Switzerland. It describes open-topped combs with alternating short and long slots that guide the warp threads, with many combs mounted on a rotating drum or above an endless cam band so that different weave bindings (plain weave, 4- and 5-end twill) can be brought into working position quickly. The text covers comb variants, a three-part adjustable comb for varying warp spacing, lever and bracket operation, and suitable comb materials. The patent claims and one sheet of drawings (Abb. 1-9) are included.

German Reich patent no. 445 021 by Gertrud Witte of Berlin-Halensee for a shedding device for weaving apparatus and looms. The device uses a rotating body made of slotted disks or plates on an axle, with small plates or rails inserted in the slots to serve as interchangeable supports for the warp threads. The text describes the frame, table and plate arrangement, and the claim; figures show the device in elevation and plan.