Troughing The Shed

TROUGHING THE SHED

Mill term for the method of altering the warp shed in a loom to give the fabric fullness. The back rest is raised so that the bottom shed line of warp is depressed more below the warp line than the top shed is raised above it. Thus greater tension is put on the threads in the bottom shed line than on those forming the top shed, hence the latter give better cover.