This is an antique White treadle sewing machine (most likely a White Family Rotary / FR model from roughly the early 1900s to 1920s), made by the White Sewing Machine Company of Cleveland, Ohio. White was a major American manufacturer and a primary competitor to Singer. They produced high-quality machines, including vibrating-shuttle (VS) models starting in the late 1870s and the more advanced Family Rotary (FR) line from the late 1890s/early 1900s onward. The FR used a vertical rotary hook for a smooth lockstitch and was popular in treadle, hand-crank, and later electrified forms. Many were sold under the White name or private labels (e.g., for Sears).
Black enameled cast-iron head with ornate gold floral/scroll decals and the script “White” on the arm. Large handwheel on the right, tension/stitch regulator on the left side of the head. Mounted in a wooden (likely oak or similar) cabinet/table with drawers on both sides, curved front apron, ornate drawer pulls, and a cast-iron treadle base with foot pedal and belt drive.
A measuring-tape-style marking along the front edge of the table (a known feature on some White cabinets).
Overall style and decoration are typical of early-20th-century White FR treadles rather than the earlier, slimmer VS vibrating-shuttle machines.
White cabinets were often well-made (the company controlled some of its own wood supply), and the full cabinet + treadle base adds both functional and decorative value. Exact dating would require the serial number (usually stamped on the bed, near the needle plate, or on a plate; FR models often carry an “FR” prefix). Patent dates or a medallion on the machine can also help narrow the year.