Vävmaskin

En gammaldags mekanisk vävstol, med flygande skyttel, fortfarande mycket lik en manuell vävstol i sitt arbetssätt.

Vävmaskin för industriell vävning, skiljer sig från vävstolen främst genom den tekniska skillnaden i hur inslaget i varpen sker. I vävmaskinen används ingen skyttel, utan tråden förs in med hjälp av en luft- eller vattenstråle, alternativt en projektilskyttel eller en gripare.

Projektilskytteln kan gå med en hastighet av 400 skott (inslag) per minut, mot en vanlig skyttel i en enklare mekanisk vävstol som klarar 200 inslag per minut.

Luftstråleinslag med tryckluft klarar 1500 inslag per minut.

Vattenstrålemaskiner lämpar sig bara för syntetvävar, och klarar 600 inslag/minut. Efter införseln av inslaget skall tråden dessutom klippas av och slås ihop i väven.

1995 introducerades en prototyp av en vävmaskin som kan hantera fyra öppna skäl samtidigt, vilket förväntas öka vävhastigheten med 2-4 gånger. Principen bygger på att varpen förs över en slags rotor som öppnar skälen samtidigt.

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Identifier: studiesinprimiti00roth (find matches)
Title: Studies in primitive looms
Year: 1918 (1910s)
Authors: Roth, H. Ling (Henry Ling), 1854-1925 Royal Anthropological Institute of Great Britain and Ireland. Journal
Subjects: Weaving
Publisher: Halifax (Eng.) F. King & sons, ltd
Contributing Library: Sterling and Francine Clark Art Institute Library
Digitizing Sponsor: Sterling and Francine Clark Art Institute Library

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Text Appearing Before Image:
otiya loom, which I saw at work at the Coronation Exhibition inLondon in 1910, is now likewise in Bankfield Museum, and is fitted up for makingrugs or pile cloth. It is provided with a ball of weft instead of a spool of weft. Inother respects the two looms are similar. The length from beam to beam inclusivewas about 18 feet (about 5.5 m.), with continuous warp, and the angle of rise of thewarp from the weaver was somewhat under 30°. The methcd of inserting the pileis shown in Fig. 130. It may be likened to that of a heddle with very thick three-plyleashes, which gets overtaken by the weaving and is left two picks behind, afterwhich the rod is withdrawn and the upstanding loops cut along the whole length, 1 A like form of spool is found on the Sermata loom already mentioned. Note, p. 68. H. Ling Eoth.—Studies in Primitive Looms. 75 with a resultant pile. The rug on this loom was about 3 feet (or 1 m.) long,and several are made at intervals on one warp laying and beaming. When I pur-
Text Appearing After Image:
wooden5/VCK- STRAP chased this specimen the heavy beater-in was not included in the sale, as I was toldit was an heirloom without which the weaveress could not work, and a replica 76 H. Ling Eoth.—Studies in Primitive Looms. was of no use to her as it did not aud could not possess the qualities of the original,I had to content myself with the replica, and concluded it to be a case of weaversritual. The Bhotiya loom is evidently the same as that described by Moorcroft andTrebeck as being in use among the Northern Ladakis.1 The Igorot and Ilanunlooms are a step in advance of the Iban and Dusun and Bhotiya looms in so far thatthey possess reeds. An Igorot loom in the British Museum, obtained from Mount Isarog, Luzon,by Jagor (seeFig. 131), consists of a breast beam, two heading rods, one single heddle, a beater-in, two laze rods, a warp beam, four spools, and a wooden backstrap or yoke. Length from beam to beam inclusive 42 inches (or 1.07 m.); widthof web 15 inches (or 38 cm.). The wa

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