. Cotton and cotton manufacture . Drawing In. Since it is necessary that the warp threads may he lowered or raisedin various combinations to allow the passage of the shuttle, each warpthread must be passed through an eye in the centre of a harness , for instance, the warp is to be raised and depressed in three evensections there will be three harness frames, each fitted with enoughheald-wires to accomodate one-third of the number of threads in theentire warp. In the Jacquard loom, used for intricate patterns, eachwarp-thread is separately controlled. The passing of the ends of thewar
. Cotton and cotton manufacture . Drawing In. Since it is necessary that the warp threads may he lowered or raisedin various combinations to allow the passage of the shuttle, each warpthread must be passed through an eye in the centre of a harness , for instance, the warp is to be raised and depressed in three evensections there will be three harness frames, each fitted with enoughheald-wires to accomodate one-third of the number of threads in theentire warp. In the Jacquard loom, used for intricate patterns, eachwarp-thread is separately controlled. The passing of the ends of thewarp through their proper harness wires is a delicate and skilfulloperation known as healding, or drawing-in. At the same time thatthis is done the threads are passed through individual stop-motionwires, relaxed tension on any one of which will bring the loom to astop. 33. o Clo^^eIy connecled with tlra\vin<i-iii, is the final slop ination of the warp, and this is called reedinp; or the warp threads in proper position duriiifrpassed throush the wires of what looks like a comb the prepar- In order to Reedingweaving they arewith a strip across the open ends. This, the sley or reed, is attached to the batten on theloom and serves in addition to drive home each weft thread after theshuttle has passed. When the loom has devoured all the warp threads contained on onebeam, all that is necessary, if the pattern is to be continued, is to tie theends of the old warp to the ends of the new, and this is accomplishedwith marvelous accuracy by a little machine built on the same prin-ciple as the Barber Knotter. This avoids drawing-in a second time. When the preparatory processes have been completed the actualweaving is done, as we have seen, practically without human shuttle flies back and forth at the rate of from one to two hundredpicks p
Size: 1080px × 2314px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectcottonm, bookyear1921
