Patent GB-190422452-A (GB)
Title: Improvements in Looms for Weaving Pile Fabrics.
Inventor: SARAFIAN HOVCEP
Filed: 1904-10-18
Granted: 1905-02-09
Abstract: 22,452. Saraflan, H. Oct. 18. P i l e fabrics.- Two ground warp threads b, c, Fig. 17, are provided for each pile warp thread a, which is looped round the ground warp thread and extends between and alternately on opposite sides of the threads b, c to form the pile loops a'. The successive bottom loops a<2>, a<3> of the thread a cross and re-cross the thread c, and the wefts d, d' are inserted under the pile loops a<1>. To produce a desired pattern by the face loops a', correspondingly-coloured pile warp threads a are employed. Looms, pile-forming in; healds ; shedding-motions; reeds.-In a loom for weaving the above-described fabrics, the ground warps b, c pass from their warp beam through heald mails E, E', Fig. 2, between the teeth of transverse shogging-combs F, F<1>, and between spaced dents or bars G, G<1>, Fig. 1, which are preferably mounted in a frame I free to slide vertically in guides A'. The pile warps a pass from a separate warp beam through the eyes H<1> of needles H, secured between adjacent bars G, G<1>, and extending upwardly from the bottom of the frame I to about half the height of the bars. Each group of ground and pile warps b, c, a pass together through a single split in the reed C'. The combs F, F<1> are mounted to slide transversely in suitable bearings in the main frame A, Fig. 1, and are pivotally connected by links N, N' with arms N<2>, N<3> secured on the upper ends of vertical shafts N', N<5>. Arms N<6>, N<7>, secured to the shafts, carry friction rollers N<8>, N<9> engaging in grooves in cams O, O<1> secured on the main shaft L. The grooves in the cams O, O<1> are arranged in opposite directions, so that the shafts N<4>, N<5> are rocked, and transverse motion is imparted to the combs F, F<1> in opposite directions. The movement of the combs F, F' causes the ground warps b, c to be moved alternately to opposite sides of the pile-warp needle H, so that, when the frame I is raised, the pile warp a passes up between and alternately on opposite sides of the warps b, c to form the pile loops a' over the transverse pile wires D, D', which are inserted and withdrawn in the ordinary manner. The frame I is connected at the top and bottom respectively by links I', a bell-crank lever I<2>, and a link P, and links I<4> and a guided rope I<5> to the upper and lower arms of a pivoted lever J, which is oscillated by a grooved cam K, so that the frame I is moved up and down. The wefts d, d<1> and the pile wires D, D<1> are alternately inserted and beaten up by the reed C<2>, and after the wefts d, d<1> are beaten up the lay remains temporarily in its forward position until the frame I is lowered, the combs F, F<1> are moved transversely, and the frame I is raised again. Instead of two combs F, F<1>, one comb only may be used to move the warp c, say, to opposite sides of the warp b, and the frame I with the bars G, G<1> may be stationary, the needles H only being moved up and down. When the whole frame is moved, the needles H are secured slightly behind the bars G, which may be vertical or inclined. The shuttle mechanism and the shedding-motion for the ground warps are actuated from the main shaft L, and are of ordinary construction.