The only patent I saw granted to Leavens as inventor was for a saw set. (Baker also had two saw set patents.) Maybe someone else besides them was the inventor on the patent you saw. I had some difficulty filtering by assignee and manufacturer last night on my iOS device, so I may have missed something.
The clue you gave about it having to do with selling out to Stanley might help, but I haven’t seen it yet. One thing caught my attention: he seems to have sold vises to Stanley Tool, and transitional planes to Stanley Level before they merged, so this might be double the trouble to research.

Scored a A602 two inch extension off eBay and it arrived today.
In the middle of this photo are a Bonney 2805 short 1/2x9/16 DBE Bonaloy and a 2729 5/8x3/4 DOE obstruction wrench marked with SAE and cap sizes.
From Sunday's old car swap meet.
I'm more curious about the "U-M-S". It's not a CAM-LOC licensee that I familiar with (The Kramer Fabrication Company, Swage-Lok, Snap-on, and Bonney is what I have in my notes...), and I'm trying to decipher what it would expand to. United Machinery Systems?I wonder if the G.M. means General Motors and these were used on the production line?
I'm more curious about the "U-M-S". It's not a CAM-LOC licensee that I familiar with (The Kramer Fabrication Company, Swage-Lok, Snap-on, and Bonney is what I have in my notes...), and I'm trying to decipher what it would expand to. United Machinery Systems?
EDIT: Have any of you fellow CAM-LOC aficionados ever found the drive plug insert that converts a 1/2" CAM-LOC wrench into a 3/8-inch drive ratchet? I keep looking. So far, no luck.
Bonneyman, my wrench looks just like the one you posted in the Loc-Rite thread in January.
I wonder if the G.M. means General Motors and these were used on the production line?
According to my research, Lugz, U-M-S stands for "United Motor Service" which was founded in 1917. This link might help you out some.
https://www.hemmings.com/magazine/h...e ever seen. I must have missed yours before.
Thanks, Bonneyman. That was a very interesting read. At the time this wrench would've been made, U-M-S was a division of GM. Another CAM-LOC licensee/maker to add to the list! First one I have ever seen. I must have missed yours before.
It was the first C.L. I have seen, and was only $3.00. The seller likes to spray everything with silver paint, which makes it look flashy. A quick swipe with a brass bottle brush cleaned the overspray out of the workings, and it works fine.
Yeah, I could ‘t believe it was there either. Found a few surprises in a this box that was buried behind things for years.
Cool, Bman. I don’t see anything on that other #.






The part number 2550 doesn't ring a bell, either. Only other 25xx anything close to a socket is their 1/2" stub remover (2591) which also has a moving part, listed as early as 1947 as a 'specialty socket'. I might be out on a limb here but the 25xx sockets might all be a specialty category.
I'll have to do some more digging. Very different socket to be sure.![]()
Looks like 7/8 Bman. A few more pictures.
Got a pair of reproduction old style Bonney stickers off e-bay today and of course they are now stuck to my toolbox.

Very funny. I have to remember thatYou might have to get a sticky set up for your stickers, Mike.![]()

Got a pair of reproduction old style Bonney stickers off e-bay today and of course they are now stuck to my toolbox.
Haha,Nice little group!
That's the thing about Bonney. There are those that like em, and those that don't. And those that don't like em can sell them to me!![]()