US Patent 1,735,651, granted 12 November 1929 to Félix Noyer and Paul Pilard of Calais, France, for a twist lace machine of the "Levers" or "go-through" type. It describes a needle-carrying bar with levers, cams and a thread-assist wheel that carries a supplementary weft thread across the full width of the fabric, so tulle and lace machines can produce a tighter, woven-like net or lace. The document has four sheets of patent drawings (Figs. 1-13), a written specification and seven claims.