I found a Tuffy this morning at the flea market in a pile. I was not even going to pick it up out of the pile because I thought it was Asian. I looked all over and could not find any name other than TUFFY, until I flipped open the handle. Fortunately the spring loaded detent is still present.
Swallow Airplane Co., Wichita, Kansas. Patents Pending.
Did a google search and here I am. Also found this article previously mentioned above, about the history.
http://sabertoothowl.blogspot.com/2007/01/swallow-airplane-co.htmlDesign patent was issued in 1945, and good for 14 years. Swallow was gone by 1956 according to the article. Production of the screwdriver was picked up by the Tuffy Tool Corp. in Quinter, Kansas.
I assumed this was an early version due to the "Patents Pending", but according to the author of the article he has never seen one with the patent number stamped on it.