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Thursday, May 17, 2012
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Intellectual Property, Commerce, & Technology
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User Guide Series: Homer and Jean Blair Collection of United States Patent Models
Automatic Gate Latch
24. 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.
<< Patent Model User Guide
<< Homer Blair Bio
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