Certain, Jerry M.

Impact on the world

Patented the parcel carrier for bicycles on December 26, 1899, a frame-mounted attachment for carrying goods that addressed a practical need during the 1890s bicycle boom, when bicycles were rapidly becoming a primary mode of personal transportation and delivery for ordinary Americans; his invention, filed the same year as fellow Black inventor Isaac R. Johnson's foundational folding bicycle frame patent, reflects the broader, often overlooked wave of African American contributions to bicycle technology during cycling's first golden age.

Life & background

Working at the height of the 1890s bicycle boom, when the introduction of the safety bicycle had made cycling newly practical and popular for everyday transportation across the United States, Certain patented a parcel carrier attachment for bicycles in December 1899, designed to be fitted to the bicycle frame to carry packages and goods. Relatively little biographical detail about Certain's life survives in the historical record beyond his patent filing, a pattern common to many Black inventors of the era whose personal histories were not documented with the same care given to their white contemporaries; his invention nonetheless remains a recorded part of the technical history of bicycle accessories still in use, in updated forms, on delivery and cargo bicycles today.

Sources

1. PikeRide (8 Influential Black Figures Who Revolutionized Cycling); Rad Power Bikes; Washington Bikes