A wreath of tulips.Shown in 1895 Chicago catalog page 124, with the traditional long Niles shank.Ownership changed in 1907 and Niles attachment was phased out. The last 4 photos below are examples of the entry and passage size of  how the new stem was screwed into the knob in the same way as the Nile. In 1913 the name of the company was changed to Sager Lock. Some of the Chicago designs were continued to be made.