Early peanut-butter-making machines were developed by Joseph Lambert, who had worked at John Harvey Kellogg's Battle Creek Sanitarium, and Dr. Ambrose Straub who obtained a patent for a peanut-butter-making machine in 1903.
Esimesed pähklivõi tootmise masinad valmistas Joseph Lambert, kes töötas John Harvey Kelloggi Battle Creeki sanatooriumis, ja Dr. Ambrose Straub, kes sai patendi maapähklivõi valmistamise masina eest aastal 1903.