Cotton Planter and Chopper (open access)

Cotton Planter and Chopper

Patent for improvements in "combined cotton planters and choppers; and it consists in the peculiar construction and combination of devices" (line 9-12), includes detailed illustration.
Date: July 3, 1888
Creator: Lester, Isaac L. & Whittly, Josiah
System: The Portal to Texas History
Device For Illustrating the Transposition of Musical Scales (open access)

Device For Illustrating the Transposition of Musical Scales

Patent for an improvement in machines for transposing musical scales in which a marked and perforated original scale is run over the machine and automatically transported, with levers and rods to mark the sharps, flats, and other information.
Date: July 28, 1885
Creator: Neill, John, Frances
System: The Portal to Texas History