US Patent 1,764,576, granted 17 June 1930 to Walter Nicolet of Leipzig, Germany, for a loom that weaves two fabrics' worth of shedding at once using two sets of warp threads and guide combs. A single rigid weft bobbin supplies weft that is entered into a closed front shed and an open rear shed as a hairpin loop, then cut off, which produces a proper selvedge. The scan has three sheets of drawings (Figs. 1-6 showing consecutive loom positions), the specification, and 17 claims covering the method and the loom.

US Patent 1,752,804, granted to Walter Nicolet of Leipzig, Germany, for a loom that forms two sheds, one behind the other, using two groups of warp threads guided by knitting-type needle bars. The invention shifts the needle bars of one comb longitudinally and transversely before the warp groups cross, so threads enter the correct spaces between needles. The patent has six sheets of drawings (Figs. 1-10) showing thread positions and the cam and lever mechanism, followed by the specification and four claims.

Four sheets of patent drawings for US Patent 1,764,577, "Means for Weaving Fabrics," by Walter Nicolet, filed October 22, 1928 and issued June 17, 1930. The figures (Figs. 1-13) show a weaving mechanism with warp and weft threads, heddles/healds, shed-forming parts, and bars, with numbered reference parts. Only the drawing sheets are present; the specification and claims text are not included.