Name/Title
Twist testerEntry/Object ID
1985.06.03Description
Device for measuring the yarn twist factor (tpi).
This item was reviewed by Dr. Larose (see biography) during interview on July 15th, 1985; A standard item for measuring the yarn twist factor (i.e. the number of complete turns per unit length, usually one inch). One end of the yarn is attached to the clamp on the tester and the other to a fixed point a specific distance away. The handle is turned until the yarn is completely untwisted, and the number of turns to do this is read off the dial. Dr. Larose does not recall this particular instrument in his lab.Collection
Textile Industry; Testing CollectionCataloged By
Blades, AlexandraLexicon
Nomenclature 4.0
Nomenclature Secondary Object Term
Tester, TwistNomenclature Primary Object Term
Tester, FabricNomenclature Sub-Class
Textile Manufacturing EquipmentNomenclature Class
Textileworking T&ENomenclature Category
Category 04: Tools & Equipment for MaterialsDimensions
Height
4-1/2 inWidth
7 inLength
7 inLocation
Location
Shelf
Shelf 91Room
Collections RoomBuilding
M.V.T.M.Category
PermanentDate
November 7, 2023Location
Shelf
Shelf 85, Shelf 85Room
Collections RoomBuilding
M.V.T.M.Category
PermanentMoved By
Whit, ElizabethDate
July 7, 2017Location
Shelf
VIII-3, VIII-3Room
Collections RoomBuilding
M.V.T.M.Category
PermanentMoved By
Moxley, MatthewDate
November 9, 2010General Notes
Note
Notes: Twist is needed in yarn to hold the fibres together, and is added in both the spinning and plying processes.The amount of twist varies on the fibre, thickness of yarn, preparation of fibre, manner of spinning, and the desired result. Fine wool and silk generally use more twist than coarse wool, short staples more than long, thin more than thick, and short drawn more than long drawn.
The amount of twist in a yarn helps to define the style of yarn- a yarn with a lot of air such as a woolen yarn will have much less twist than a yarn with little air, like a worsted yarn. It also affects the stretchiness of the yarn, strength, the halo of the yarn, and many other attributes. Filling or weft yarns usually have fewer twists per inch because strength is not as important as with warp yarns, and highly twisted yarns are, in general, stronger. Warp yarns have to be stronger so that they can withstand the tension of the loom. Filament fibers, such as silk, or many synthetics, need only to be twisted slightly to create a yarn.
Status: OK
Status By: Cotter, Ellen
Status Date: 2022-06-08Created By
admin@catalogit.appCreate Date
March 17, 2010Updated By
admin@catalogit.appUpdate Date
November 12, 2023
