In 1917 Mr. Weymann was issued a patent for his invention from the United States Patent & Trademark Office (USPTO). There were 4 documents on file for this patent. The drawing specification sheet of the patent has been reproduced from original USPTO documents and printed onto parchment paper. This print is sized and ready to install into an 8" x 10" frame. The additional sheets included are printed on 5.50" x 8.50" parchment paper. These accompanying documents describe the scope of this invention in formal terms. The following is an actual excerpt from the patent…

       " The object of my invention is to provide, in stringed musical instruments and mandolins, a construction whereby the distance between the strings and finger board may be adjusted to suit the desires of the musician, so that he may, with more or less freedom, bring the strings into contact with the frets of the board when stopping the strings in fingering"…