1878 – Diving Suit – Carmagnolle Bros. (French)

1878 – Diving Suit by the Carmagnolle Bros. The suit was the first truly anthropomorphic suit design to be constructed. A distinctive feature of the Carmagnolle suit was the helmet. It had 25 individual two-inch diameter glass viewing ports spaced at the average distance of the human eyes. An additional port at the top of …

1878 – Toy Mechanical Horse – Andrew J. Davis (American)

Patent number: 209468 Filing date: Jul 26, 1878 Issue date: Oct 29, 1878 see pdf here. Although a patent for a toy, the walking mechanism is what's important here. On the whole, I have found that toys, particularly those that actually made it into production, show proof of concept in most cases, and that future …