Patent ID: 7451786

Claim:
Weaving machine for weaving pile fabrics consisting of weft yarns, ground warp yarns and pile warp yarns, comprising: a bottom and/or top cutting bar which is provided in order to guide at least one pile fabric; at least one set ( 100 ) of at least two spacers( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) extending next to one another which extend between the pile warp yarns ( 18 , 18 ′, 18 ″, 18 ′″) and which are provided to either achieve a uniform pile height between two formed pile fabrics, or to determine the pile loop height in one or more pile fabrics which comprise looped pile, wherein these two spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) extending next to one another, at their ends near the one or more cutting bars, have projections which coincide on projection in the weft direction onto a plane at right angles to the weft direction; a yarn stock ( 20 , 20 ′) of pile warp yarns; one or more shed-forming devices which drive healds through which ground and/or pile warp yarns ( 18 , 18 ′, 18 ″, 18 ′″) extend in order to position these warp yarns with regard to the weft yarns; a supply zone of pile warp yarns ( 18 , 18 ′, 18 ″, 18 ′″) which extends between said thread stock and said healds; at least two holders ( 7 , 8 ) to clamp the spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) into, and which are arranged one above the other outside said supply zone; a shed-forming zone ( 9 ) within which the pile warp yarns ( 18 , 18 ′, 18 ″, 18 ′″) can move, and which is delimited by said holders ( 7 , 8 ) of the spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) and said shed-forming devices; wherein the spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) are provided and arranged in such a manner that the projections in the weft direction onto a plane at right angles to the weft direction of the path of at least one pile warp thread ( 18 , 18 ′, 18 ″, 18 ′″) starting from the holders ( 7 , 8 ) of the spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) up to said cutting bars, and of said two spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) extending next to one another, viewed in the direction of travel of the pile warp yarn ( 18 , 18 ′, 18 ″, 18 ′″), successively relate to one another as follows: in a first section, said projection of the path of the pile warp yarn ( 18 , 18 ′, 18 ″, 18 ′″) does not overlap any of the projections of said two spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ); subsequently, said projection of the path of the pile warp yarn ( 18 , 18 ′, 18 ″, 18 ′″) overlaps the projection of one of said projections of said two spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) separately, and finally, said projection of the path of the pile warp yarn ( 18 , 18 ′, 18 ″, 18 ′″) overlaps the projections of both said spacers ( 1 - 4 , 11 , 12 , 21 , 22 , 31 , 32 , 41 and 42 ) simultaneously.