Casimir Zeglen was truly a man of the cloth. He was a Catholic priest — with an obsession for silk underwear — but the pleasure he got from silk touching skin was because it stopped bullets.
The Chicago priest is credited with inventing the first bulletproof vest, a calling he answered in 1893 after the city’s mayor was gunned down.
The vests worn today by soldiers, police officers and marked men are made with lightweight armor and sophisticated, bullet-resistant fibers like Kevlar that evolved as weapons got more powerful. Yet they work much the same way as Zeglen’s silk invention: The material catches and deforms slugs, then spreads the force of the strike over a larger area of the vest.