My invention consists of a frame suspended from another frame, on which the stone rests, and is leveled by screws from below, on which suspended frame are screws, which, being adjusted in the frame when the stone is first leveled by its face, serve afterward to level the stone at any time without removing the runner, and this lower frame serves for tramming the spindle; […]
1875 October 29, James T. Beckwith, “[Patent number] 171,974. Leveling and Tramming Apparatus for Millstones. James T. Beckwith, Cameron Mills, N.Y. ”, in Specifications and Drawings of Patents Issued from the United States Patent Office for January, 1876: Patents No. 171,641 to 172,817; Reissues No. 6,831 to 6,885, Inclusive, Washington, D.C.: Government Printing Office, published 1876, page 315, column 1