Hope I'm not out of place bringing this post back to life, but I just wanted to give my insight just to say that the OP was correct.
I brought alot of my archives home when we closed up our distribution center here in Maryland. (We being Easco/KD Tools aka Danaher Tool).
I have one of these 140s in my archives. If you look at these catalog pages you will see that the 140 was introduced as a battery carrier about 1958 or '59. By the time the '61 catalog supplement was published, there was a 'new use' for the tool as a 'Multi Purpose Body Clamp'. I'm going to guess that someone realized that the tool really wasn't safe to use as a battery handler.

