I made corrections to my previous post as to the source on the information about Crouch.
Archery - Elmer - 1926
"11. Abner Shepherdson–artist photographer; master bowyer and fletcher; inventor improved bow-joint and movable bow-sight." [pg. 131]
“The jointed handle, making what Ford called a carriage-bow, but which we call a jointed bow, has been used for a long time in Belgium and France. In American Abner Shepherdson of Melrose, Mass., has invented and patented a jointed handle and makes a bow to fit it that is not excelled in cast or beauty by any in the world. It consists of a piece of one and three-sixteenth inches (inside diameter) Shelby steel tubing, four and one-fourth inches long, which is covered with rough leather and held in the hand. Into each end telescopes a two and three-fourths inch ferrule in which a bow-limb is fitted.” [pg. 240-1]
"... Shepherdson says that a light tip improves the cast as much a swould the addition of several pounds to the bow’s weight, if that were possible."
“I am sure that one of the reasons for the wonderful cast of Shepherdson’s jointed bows is the absolute immobility of the steel handle....” [pg. 252]
“The best strings in America, that I know of , are made by Shepherdson and at my request he very graciously wrote a full description of his method for this book. It is so complete and perfect that I see no reason for making any comments on it except to give it the praise it deserves.” [pg. 259-0]
[pg. 288-293] “How To Make A Glued Bowstring”
"It is undoubtedly best to take the time and trouble to make a string with glue in the way Mr. Shepherdson has described, as his home-made strings are the best I have ever seen and as the professionally made strings of Belgium are also laid in glue." [pg. 293]
“Chief among these are McMeen and Sheperdson, both of whom have turned out specimens of the fletcher’s art of such perfection as to entitle them to the highest honor which is within the power of the Archers’ guild to bestow for such work, the degree of Master Fletcher.” [pg. 324]
"... Shepherdson uses a steel wheel covered with sandpaper, or perhaps garnet paper, which cuts perfectly. I have seen him make a shaft in about a minute, giving the final taper of the shaftment by turning the handle which sets the cutting wheel a little closer to the wood." [pg.325]