Classic 1920s Bicycle Illustration - Historical Bike Design & Engineering #3571587 (License: Personal Use)

This black-and-white line illustration depicts a high-quality utility bicycle from the 1920s, likely manufactured by or branded for REPO-NOX (a Chicago-based rubber/tire company active in the early 20th century). Key features include a diamond frame with reinforced lugs, full mudguards, a coil-sprung saddle, upright handlebars with lever controls, and a single-speed drivetrain with a large chainring and coaster brake mechanism. The tire sidewall text reads “SINGLE TUBE REPO-NOX TOUGH TREAD GUARANTEED H.S.B. & CO. CHICAGO ILL.” indicating its American origin and industrial-grade construction.

This image is typically used in historical transportation archives, museum digital exhibits, vintage cycling blogs, or educational content about early 20th-century engineering and consumer product design; it serves users researching antique bicycles, industrial illustration, or pre-war American manufacturing.