B68-532 JACK PLANE. The Challenge. The Challenge plane was patented in 1883 and 1884 by Arthur Goldsborough of Washington, DC, manufactured by Iver Johnson and sold (briefly) by Tower & Lyon. PTAMPIA I, page 166. This is the 15" jack plane version with the word "Challenge" and the patent dates cast into the yoke. Black paint on the knob and tote are mostly worn off but otherwise a clean example of a very rare plane, with japanning nearly intact. From the collection of Harold Unruh. Good+ 1000-2000