A town historian tells me that while the plow was an important invention at the time, it was the hitch that made the device invaluable and laid the foundation for a family fortune.
For additional reading, including the narrative that accompanies this schematic, see this link: www.google.com/patents/US847196.pdf
The above photograph from the Daily Leader is from Mary Becker Hatcher's archives, supplied by her daughter, Bettie Hatcher Cox, and scanned by Deenie Tallant. Many thanks to both. The schematic is from the above mentioned link.