The beater on the Jano is not affixed to the loom’s frame itself as later models are. Instead, the beater is simply set on a piece of round metal stock that protrudes inwardly from the lower cross beams.
There are likely numerous Jano looms out there that are minus a beater/reed. 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. On behalf of the weaving community, many thanks!