German Reich patent no. 312851 (class 86c, group 8) issued 17 June 1919 to Ellen Struve, née Gleiche, of Berlin-Friedenau, for a hand-weaving device, patented from 8 May 1917. The warp is a single continuous thread run in a zigzag over two rows of rollers inside a small housing, so a long warp and a long piece of cloth fit in a compact device. Sheds are formed by two combs with alternately long and short slots, carried on pivoting double-lever pairs worked by cords and pedals, and warp tension is adjusted by raising or lowering one roller row. The scan includes the description, the single patent claim, and a sheet of drawings (Figs. 1-3).

German imperial patent no. 322535, an addition to patent 312851, granted to Ellen Struve (née Gleiche) of Berlin-Friedenau for a hand-weaving device. It describes an interchangeable comb (reed-like shed-forming comb) made of slats of different lengths threaded on two bolts and held by nuts, so the slot depths can be arranged for fine warps such as linen or for coarse goods such as rugs. The text covers the description, one patent claim and one sheet of drawings showing the comb in front and side views.