1890, Oscar Wilde, The Picture of Dorian Gray, Vintage 2007, p. 62:‘I must see him!’ he exclaimed; but at that moment the Duke of Berwick's four-in-hand came between, and when it had left the space clear, the carriage had swept out of the Park.
1898, Winston Churchill, The Celebrity Chapter 4, Judge Short had gone to town, and Farrar was off for a three days' cruise up the lake. I was bitterly regretting I had not gone with him when the distant notes of a coach horn reached my ear, and I descried a four-in-hand winding its way up the inn road from the direction of Mohair.
A slipknot with one end hanging in front of the other; a simple necktie.