sentences:  Later documentation for a patent of a fifth wheel is in patent number 2,053,812 issued to Charles E. Bradshaw of Wellville, Virginia, filed March 18, 1936 and granted September 8, 1936.One third of the patent was assigned to Charles Martin, also of Wellville.Today's fifth wheels allow the trailers to slide into the fifth wheel and lock into it, and are a very reliable unit when maintained and serviced properly.