Floor loom with a dobby mechanism for weaving geometric patterns
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A dobby loom, or dobbie loom,[1] is a type of floor loom that controls all the warp threads using a device called a dobby.[2]
Dobbies can produce more complex fabric designs than tappet looms[2] but are limited in comparison to Jacquard looms.
Dobby looms first appeared around 1843, roughly 40 years after Joseph Marie Jacquard invented the Jacquard device that can be mounted atop a loom to lift the individual heddles and warp threads.[3]
The word dobby is a corruption of "draw boy," which refers to the weaver's helpers who used to control the warp thread by pulling on draw threads.
A dobby loom is an alternative to a treadle loom. Both are floor looms in which every warp thread on the loom is attached to a single shaft using a device called a heddle. A shaft is sometimes known as a harness. Each shaft controls a set of threads. Raising or lowering several shafts at the same time gives a huge variety of possible sheds (gaps) through which the shuttle containing the weft thread can be thrown.
^Piece Goods Manual at Project Gutenberg
^ abRoberts, Thomas (1920). Tappet and Dobby Looms Their Mechanism and Management. Manchester: Emmett and Co.
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