Double Back Beam for LeClerc Looms. A useful attachment when the take-up is greater on some warp threads than on others; when using a variety of threads of different sizes and elasticity in a long warp; and for some techniques requiring two warp beams. The extra warp beam is easy to install with brackets on the back posts of the loom, and has its own brake. The beam is removable. The extra thread beam serves to separate the warp coming from the two beams. It includes the thread beam and the brackets for mounting it.