William S Boyd lived in Greatkills Richmond New York in 1916. He patented a new type watertight joint. The improvement against MacDuffee 989530 ‘s invention was a new type of submarine armor especially an improvement to protect the hand of the operator and enable to operate the armor using his hands in a natural, though limited manner. The Metallic handsection included a finger piece.
Not much could be found about William S. Boyd. If you have any information about Mr. William. S. Boyd I would be pleased receiving more information about him or his invention.
Boyd’s patent can be found here: https://patentimages.storage.googleapis.com/54/84/10/455d519ae5936d/US1198611.pdf
Therebreathersite was founded by Jan Willem Bech in 1999. After a diving career of many years, he decided to start technical diving in 1999. He immediately noticed that at that time there was almost no website that contained the history of closed breathing systems. The start for the website led to a huge collection that offered about 1,300 pages of information until 2019. In 2019, a fresh start was made with the website now freely available online for everyone. Therebreathersite is a source of information for divers, researchers, technicians and students. I hope you enjoy browsing the content!