I looked, but didn't see an exact match but I breezed through this pretty quick, so I may have missed it.
Maybe you will have better luck? There were not very many US Patent granted in April 1894: Only about 400 utility patents, and 20 or so design patents.
Maybe this is patented overseas?
Anyway - Here's the USPTO Gazette for the date in question:
The Utility patents start on page 409, and Design patents on page 520.
https://babel.hathitrust.org/cgi/pt?id=wu.89095060836;view=1up;seq=644;size=150
The closest thing I saw was Patent 518,595 (See page: 413).
That patent is for a "Cuff Button". Image below.
It's the same basic shape as yours, but the ends are a little bit different, and it mentions something about one end being detachable, which your photo doesn't seem to have. (?)
