Dobby is a mechanism that moves the warp threads up and down the frames in the weaving machine.
Mouth opening occurs in a certain order. The shed is the space formed between two warp groups as a result of the movement of the frames and the fact that some of the warp threads are up and some are down. The weft thread passed through the shed stays under the upper warps and above the lower warps. In this way, the connection between the warp and weft thread is provided and the weaving weave is formed.