Anti-distraction helmet - photo

[Toolmaker51]

Anti-distraction helmet aka "the Isolator" was invented by the science fiction writer, inventor, and editor Hugo Gernsback...

Lol again and again. A helmet to alleviate distractions, in a private study while desk is littered with candlestick phone, some kind of speaker, a clock - possibly alarm clock, notebooks, and more.
Secondary marketing scheme targeted certain blind-dating sites; when a diving helmet with the windows blacked out, just won't do.