Posted 7 years ago
34" x 19" x 10" Salesman's Demonstrator of an automatic driveway gate.
Folds up to 19" x 4" x 10" for easier transport.
I have not found any patent information for this gate or for the one on the right sold in a past auction. My number one theory is that it is a variation of patent no. 811,371, January 30, 1906 issued to Isaac Burkholder, of Dayton, Ohio, one half of which was assigned to Charles N. Heist, of Cissnapark, Illinois. Number two theory is that they were too similar to the Burkholder patent and were not patented. Makes you wonder why they would go to the expense of making Salesman's Samples. Do you suppose there was patent infringement? You may see the Burkholder model in another of my postings.
March 16, 2014. Patent found! My gut said it was a Burkholder gate, and it is, but not the same Isaac Burkholder of Dayton, Ohio. This patent was issued to Isaac Burkholder, of Farmersville, Pennsylvania, February 7, 1888, patent no. 377,479. The model is an updated version of the patent but all the patented features are there. Looks like patent no 811,371 is maybe a family member, and the patent is an improvement of this patent.