1961 – Submaray Submersible by Doug Privitt started being built in 1961 and was launched in 1962. Privitt inside Submaray operating the simple rod manipulator arm. It appears to slide inside a ball-and-socket joint, as can be seen in the video clip. Although a simple setup, this arm is quite efficient and versatile. The …
 The SP-350 Denise, famous as the "Diving saucer" (Soucoupe plongeante), is a small submarine designed to hold two people, and is capable of exploring depths of up to 400 metres (1,300 ft). It was invented by Jacques-Yves Cousteau and engineer Jean Mollard at the French Centre for Undersea Research. It was built in the …
1947 – Mechanical Lobster model by Harry Rieseberg and Charles Warren. Source: Mechanix Illustrated, Nov 1947. Mechanical “Lobster” Deep undersea the claws of this tank will rip to the heart of rotting treasure ships. THERE’S gold down on the ocean floor. Vast fortunes lie hidden in sunken caches, waiting the hand bold enough to stretch …
1940 – Diving Bell Arm With Grippers by Friedrich Gall Working arm with grippers for diving chambers Publication number DE738760 C Publication date Aug 31, 1943 Filing date Feb 6, 1940 Inventor Friedrich Gall Patent Citations (4), Referenced by (3), Classifications (3) External Links: DPMA, Espacenet See other related Friedrich Gall inventions here and here. …
1913 – Manipulator Arm For Diving Bell by Charles Petit. Moving means for the Arbeitsgeraet of diving equipment Publication number DE321916 C Publication date Jun 15, 1920 Filing date Mar 5, 1913 Applicant Charles Petit See German patent here. See other early Underwater Robots here.