David A. Fisher, Jr. (1800s) – Improved joiner clamps and furniture caster
David A. Fisher, an inventor, designed two tools that revolutionized carpentry and cabinetry work: an improved joiner clamp and a furniture caster. The clamp eliminated the need for workers to pause multiple times to hold two pieces of wood together while applying glue or other fasteners. Instead, the clamp could mechanically and securely hold pieces of wood together, saving time and increasing efficiency. Fisher patented the invention in April 1875. A year later, in March 1876, Fisher received a patent for a furniture caster, which featured free-turning wheels (rollers) that allowed cabinetmakers to move large pieces of furniture effortlessly.