Reply by poopiekat

Hi Joe!
No, these hinges are actually pretty close to the type used on Singer sewing machines, where a top would flip over 180 degrees to add lots of working surface. These are yet different, with those detents. These were for serving trays, all four sides could flip up for walking up the stairs with Madame’s breakfast on it, and once served the sides would fold down for a flat table surface. You are close, though, mine will be used in a fall-front desk in a combination secretary/curio, my fave furniture is what’s pictured in a “Larkin” catalog of the 1920’s. I’m building one to compliment the genuine Larkin bookcase and 5 drawer chest that I’ve owned each for 30 years.

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!