In January of 1884,she applied for a patent On her "Dough Kneadder and Roller."The application was for an improved design on existing dough kneaders.Judy's device allowed the dough to mix more evenly as it progressed through two intermeshed rollers carved with corrugated slats that would act as kneaders.The dough then passed into a covered receptable to protect the dough from dust and other particles in the air.
On September 23,1884,Judy received Patent no.305,474 for her invention.There is no record of her life beyond this document.
Since women sometimes used their first and/or middle initials when signing documents,often to disguise their gender,and patent applications to indicate his or her race,it is unknown if there African American women inventors before Judy.
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