All About Pocket Knives

All My research says this was Patented Dec 8, 1942. Call Push Button-open Knife.

Any more Information as dates it was made and idea of it's worth, plus any other pertinent information....OldYooper

Hey there, your knife is of 1950s vintage and was originally etched on the blade” CRAFTSMAN 9540” these were sold by SEARS. As for worth, it’s hard to say these days.The patent was Jacob Schrade improvement to the lock system and was designed to curtail blade bounce back when fired, some came with steel guards and bolsters , some with nickel, some with red handles and some with orange.

The Schrade Walden tang stamp started in the Spring of 1946, and switchblades were outlawed some time in 1958. They did not add "U.S.A." to the tang stamp for awhile, just N.Y. at first. We don't know exactly when that change took place. Some say maybe about 1953 but this is not really known. By the way, thanks, Wiseguy for some good information.

Your welcome Tongueriver ,,,,,,,,,,,,,,,,here`s some more paper on these, though it shows the larger frame size knife. I've never seen one that size, just the 4.25

Thanks for all the help with this knife.....OldYooper

That patent date is 1942, but that has no bearing on the actual manufacture date, just the date the patent was issued by the patent office.
Nice knife. J.O'.