B66-525 BUGGY AXLE WRENCH. Thompson Patent. Patented 11-2-1880 by Henry Thompson of Maine and manufactured by Portland Wrench Co. The claimed improvement was that the locking nut could "be rapidly twirled by striking the respective arms successively." 11" long, tight check in handle, jaws slightly sprung, patent date cast into body. Works smoothly and unusual. From the collection of David Jeffers. Good+ 60-120