No Pleasure Without Pain Here!
It appears our ancestors either weren't satisfied with hairy palms and going blind as a result of masturbation or they were only trying to prevent their loved ones from falling victim to that fate...by inventing brutal and barbaric ""anti-masturbation" devices. Most of the creepy contraptions were invented by religious zealots and/ or sadist masquerading as messengers of god and purveyors of moral ground.
Ironically these nasty pieces of equipment that were designed to enclose your genitals to insure you did not derive any (sexual) pleasure from your dirty, nasty body have in latter years been adopted in the BDSM crowd as actual pleasure devices!
Well there's mud in your eye, you puritan bastards!