Mammacubed

I'm new to this forum and have high hopes of finding some information. I just picked up a Hale's Crescent treadle and would love to know more about it. I've been googling like crazy, but haven't found much about it. As best I can tell is that it was manufactured by Johnson, Flanders & Company. I can't find any other info. I'd love to find a manual and part specifications. I've attached some pictures.