Re: Kitchen Built-In Old Hardware: ID for Age etc...
The design of the latch on the right is 1884. It's originally from Sargent, the "Arcadia" pattern, but it was copied by others for years. One on the left I don't recognize by name, but it's the same Eastlake style and time frame.
The steeple-tipped cast iron hinges are from the mid 1870's but they were made for at least 25 years. By 1884 they would have been going out of style, but of course that made them cheaper, and they would likely have been snapped up for utility areas and kitchens where the servants didn't care if the hinges were outre.
Remove not the ancient landmark, which your fathers have set.