Chief, I seem to remember around 1966, being issued a Shrade folding Electrician's knife. I was an ET, and seem to remember that there was a screwdriver blade which had a liner lock, and a regular blade with no lock. Both opened from the same end of the knife. Sawn delrin scales. Brass liner lock.
But that was 53 years ago, so I might have some of the details wrong. I remember I brought the knife home with me, but it seems to have vanished somewhere along the way!!
Edit....did a little research. The knife I remembered, the electricians knife, was a "TL-29". A search of the web shows that these were being made by a number of companies, Camillius, Schrades, Klein, and others. I believe that the early ones were made in WWII. Then Korea, and then during Vietnam. The earliest had wooden scales, then later, the ones that I remember had the sawn delrin.
Here's a pic of an early one:
The reason that I mention it is that the liner lock on the screwdriver blade may have been the inspiration for the liner lock on a regular cutting blade. I know that it was great to keep the thing from closing up when I was using the screwdriver blade. Yes, we had more sophisticated tools, but sometimes having this item that you could strip wire, scrape, tighten screw terminals and so forth with one tool was pretty handy, and you always had it with you.
Best Regards, Les
But that was 53 years ago, so I might have some of the details wrong. I remember I brought the knife home with me, but it seems to have vanished somewhere along the way!!
Edit....did a little research. The knife I remembered, the electricians knife, was a "TL-29". A search of the web shows that these were being made by a number of companies, Camillius, Schrades, Klein, and others. I believe that the early ones were made in WWII. Then Korea, and then during Vietnam. The earliest had wooden scales, then later, the ones that I remember had the sawn delrin.
Here's a pic of an early one:

The reason that I mention it is that the liner lock on the screwdriver blade may have been the inspiration for the liner lock on a regular cutting blade. I know that it was great to keep the thing from closing up when I was using the screwdriver blade. Yes, we had more sophisticated tools, but sometimes having this item that you could strip wire, scrape, tighten screw terminals and so forth with one tool was pretty handy, and you always had it with you.
Best Regards, Les
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