B63-369. LOT OF TWO PATENTED BRACES. William Draper's 1865 patent, which was acquired by Quimby Backus and reworked into a "clamshell" design with two jaws that are forced together by a cone to grip a square tang, marked No. 8 which signifies an 8" sweep, nickel 90%, good cocobolo head and grip; and Greenleaf Stackpole's 1867 patent with the rotating collar; the less common and more attractive brass collar version, unmarked, cast iron head, 8" sweep, tip broken off one of the chuck jaws. Good & better 80-140