Miller,thank you,and you're entirely too kind,sir...
I've spent almost two decades trying to make a living as a smith before finally giving up,and older tools always held a particular fascination for me.
Reverse-engineering of any given tool is Extremely challenging,and i was never very good at it myself,alas...It really is surprising how much ingenuity was employed by the crafstmen of old,and again,it is Very difficult to trace it back to the starting stock,as well as the sequence of forging operations.
So,most info i post here was developed by others,and safely and securely tried and confirmed by a number of smiths.I do try to stick to the more reliable information,so as to not mislead anyone.
Thanks to everyone here for posting many an interesting tool,many of them rare and unique,and for appreciating how much has gone into the forging of even the most "common" looking of them....Tool-making has gotten us all to where we are now...Starting in the early 1700's,the manipulation of steel alloys by blacksmiths is what has given us first the steam-engine,then the turbine,then on to generating electricity and eventually the information technology....It all had Much to do with the work of blacksmiths,unique in that they not only created the product,but the very tooling for the other trades...And also a great deal of Innovation,somehow inseparably intertwined with the working of iron...