In my part of the old west "sodbuster" is and was a truly vicous way to call somebody a "farmer". The conotation being, if you did any work that involved walking, it was deemed "unmanly" by the cattlemen and cowboys of the day, who refused to do any work that was not in the saddle including fencing....and gathering firewood.
This term was right up there in slurs with "sheep farmer", "goat roaper" "chicken rancher" and guaranteed to get somebody punched in the eyeball.
I expect the "sodbuster" model was designed to be a handy knife shaped for agricultural use, for a farmer who used a blade all day long and needed something that was cheap in case it got missed placed or broken. And I would also guess that it had to be inexpensive because farmers are not exactly known for their properity.
One of my favorite scenes in the great JohnWayne movie "The Shootist" was when the Duke was told to get out of the street by a would be local tough played by Bill McKinney.
http://www.imdb.com/name/nm0571853/
McKnney says, " Git out out the way you dumb bastard before I deliver you something to remember me by..."
John Wayne says..." Well, pardon me all to hell...."
And as Mc Kinney starts his milk wagon...Wayne finishes the statement by adding...
"....Buster."
Whew! Dang....
McKinney is all out of position to shuck his hog leg...and DEAD if he does. BUt he starts to not realizing he is cornered.
Wayne says, "TRY IT..." and the scene goes on without bloodshed...
So the term BUSTER...or sod buster....is not a term that sold a lot of knives in Wyoming.
Not many kids wanted to be seen carrying a sod buster knife.
O' course that was when we all had a Barlow or a stockman or a trapper in our pockets..and we played mumblety peg at recess.
Sorry to go off the topic.
Shane