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1883 was the year Joseph Mortimer Granville the "father of the modern elctromechanical vibrator" wrote a book about it.
These early vibrators became popular among the medical profession and were used for treating a wide variety of ailments in women and men, including hysteria, arthritis, constipation, amenorrhea, inflammations, and tumors; some wounded World War I soldiers received vibrotherapy as treatment at English and French hospitals in Serbia.