Archer with two-pulley winch crossbow, and details of the pulley mechanisms of the crossbow, late 15th century. Winding mechanism B/C, roller D/E, pulley system F, and foot stirrup G/H. Chromolithograph from Hefner-Alteneck's "Costumes, Artworks and Appliances from the Middle Ages to the 17th Century," Frankfurt, 1889. Illustration by Dr. Jakob Heinrich von Hefner-Alteneck, lithographed by J.M. Hefner-Alteneck (1811 - 1903) was a German museum curator, archaeologist, art historian, illustrator and etcher.