A Universal tie up so you never have to tie up your treadles again!
Use the tie up in the photo and you can tie up the treadles one way that works forever if you have only four shafts and eight treadles. Most four-shaft countermarch looms have only six treadles, but on some looms it’s easy to make two more treadles from pieces of wood to match those already on the loom.
You can make all the sheds possible with four shafts this way by using both feet and using two treadles at a time. Each treadle has only two ties.
Look at the photo. Remember all “o”s represent shafts that are to rise (like bubbles) and all “x”s are for shafts that are to be lowered.
This is an ingenious tie-up because countermarch looms require each shaft to be active to make a shed. The shaft must either rise or sink, and you can’t ask a shaft to move in two directions at once. If you want shafts 1 and 3 up, the treadles to press are the second treadle from the left and the far-right treadle. Do you see that you could not use the two left-hand treadles together because that would be asking shafts 1 and 3 to go both down and up?
Think about what to do to get shafts 2 and 4 up: Use the far-left treadle plus the second treadle from the right. Then shafts 1 and 3 will go down and 2 and 4 up.
There is a comprehensive chapter on how countermarch looms work and how to adjust them in my book, Warping Your Loom & Tying On New Warps. It is available on my website as a pdf. https://peggyosterkamp.com/holiday-specials-for-weavers/