Who invented the modern mechanical starting gate used in horse racing?

Clay Puett invented the modern mechanical starting gate used in horse racing.

Puett, an American horseman and inventor, developed a gate that could hold horses in individual stalls and release them simultaneously. His design replaced less reliable methods such as flag starts and manually controlled barrier systems. The starting gate improved fairness by giving runners a more consistent beginning.

Puett’s starting gate was first used at a recognized race meeting in 1939 at Lansdowne Park in Vancouver, Canada. It was later adopted widely in North America and became standard equipment for Thoroughbred racing. The stalls can be adjusted to accommodate different numbers of runners, while the front doors open together when the race begins.

The name John H. Stroud is sometimes associated with starting-gate development because he patented an earlier gate design. Puett’s contribution was the practical mechanical system that became the modern racing gate. Starting gates are now used in many forms of flat racing around the world.