Locking tuners designed for easier string changes
Patent drawing I see a lot of confusion regarding locking tuners online. A lot of people seem to think locking tuners will provide additional tuning stability, or are redundant when a guitar as a locking nut (a la Floyd Rose). E.g., one person claimed: “Tuning stability is why they were invented.” So, um, yeah. Not exactly. The first locking tuners were invented by Robert Sperzel, who was granted patent 4,625,614 . The main benefit Sperzel lists in that patent is that his invention “provides a tuning device having a string post which is rotated through a short distance to quickly and easily tune a string of a musical instrument to a desired pitch [...] by rotating the string post through a short distance.” His invention was intended make string changes less of a pain in the ass, faster and easier compared to existing tuners, which he describes: “The string post of the tuning device [then in use] must be turned through several complete revolutions before the string is pulled ...