As a retired weaver with 32 looms in storage at present, rag rug looms are of the simplest as they only need 2 harnesses to make the rug, its when you want to do more complicated weaving you need the additional harnesses to make fancier more detailed designs. 2 harnesses make rag rugs with just an over under yarn or you can do a twill with just 2 harnesses depending on your threading. In choosing a loom, width is the next consideration, many rag rugs are just 2 feet wide so you don't need a loom much wider than that, and when one wanted a wider rug then strips were sewn together. Many old rug looms are huge and too big for homes now. Can be seen in museums and living history farms, etc. new looms are mostly for folks who want to make material in wider widths with multiple patterns. You can also just make a rectangular frame with nails to tie the warp to and weave the rags over & under the warp threads usually a cotton thread.
Good luck in deciding what you want to go with.
Debs & Hemi
in H.O.T. that has finally cooled off, but is so dry that wildfires are everywhere!