The beater on the Jano is not directly attached to the loom’s frame itself as are later models. Instead, the beater is simply set on a piece of round metal stock that protrudes inwardly from the lower cross beams.
Since Janos are no longer produced I had to look for someone else who had a Jano in order to request basic dimensions. Here is an exquisite set of drawings done at my request by Bob Bellaires, whose wife, Jenny, owns a Jano and operates Daisy Hill Weaving Studio. He made a very well engineered stand with treadles for her Jano loom which can be viewed, here. Thank you for your drawings!
In order to fully restore this Leclerc Jano loom I need to build a new beater. I do an extensive amount of woodwork; building the beater is not a problem. Getting the wood to match the loom is the greatest challenge. Winnipeg has maple, but it is six hours away. Checking with my local cabinet shop yielded a 4″ x 6″ x 3′ piece of maple. This is more than enough material for this project 3x over. The cost was $24.