The history, or appropriate period accuracy, of these has been something I have tried to track down off and on.
I often see them referenced to as "originally came on Stewart and other 19th century banjos" or "perfect for nylon or gut strings." Even as bold as "good for minstrel banjos" (suggesting early banjos).
The University of Rochester's collection of Banjo and Guitar Journal
is not complete. I have been able to fill early gaps from the LOC but not later issues. The last issue in this collection is Dec. & Jan 1899-1900. This is after S.S.S. is dead, the partnership of his sons with George Bauer, and the marketing of the Monogram series of instruments, subcontracted and not made by the Stewart manufactory. By this time the company of S.S.S. was not long for existence.
None of the available issues contain a description or advertisement for these bridges. Late issues still push the two footed maple Stewart make.
So, my question is, what is the origin of this design? Who and when was it marketed? Is there a patent associated with it?
One place I can document it is in The Banjo Entertainers
by Schreyer, page 179 a photo of McGrath and Page. It is dated to the early 1900's and there dress is consistent with this date, as late as the teens. That puts this bridge at the earliest that I can find, the 20th century.
Does anyone perhaps have an old advertisement or other contemporary documentation that predates the 20th century?
Sorry, forgot to sign my name,