Automatic Gate Latch, U. S. Patent 226,577, April 13, 1880, Albert F. Webb and John L. Duncan, Franklin, Indiana.
This invention is a slightly tilted gate that unlatches and latches when a vehicle passes over trip rods.
The model is 9" x 9" x 5". It is made of brass with a wood base. The model is attractive and in excellent condition. A Patent Office filing tag remains.