Hi. The "overlapping X's" are a W and an A.I have I guess what is an old valve wrench with what looks like a "Z" in a circle. Can't find this logo anywhere. I'm assuming it would stand for the drop forge company? The opening isn't a true square. Also has what looks like two overlapping X's. It's a mystery to me.
Or an A and a V, with two little W's.Hi. The "overlapping X's" are a W and an A.
AA said:Woo-hoo! I just found a goldmine of forge mark logos .. do a google books search for 'custom forging capability' and there's a chart of companies with their logos ..
I was able to identify an HT-circle logo as Harris-Thomas Drop Forge .. never thought I'd find that one.
AA
I think I have a Oswego Tool Company wrench. The only logo is a circle with a "T" inside. A similar logo was used by Osaka Tanko. This wrench is 8" long and is also marked with matching numbers on the jaw and wrench. It features a easily removable adjuster. Simply unscrew the jaw and then the adjuster can be moved to the side and lifted out. I have a 1920 ad showing this feature on a "S" wrench. Cannot locate any straight wrenches with this feature and logo. Any thoughts on if this wrench is earlier, later, or same time as the "S" model?
Oswego / Oswego Tool Co., 119-27 W. First St., Oswego, NY / "Giles Patent wrench" / patent 391957 Oct 30 1888 J.A. Giles / http://alloy-artifacts.org/other-makers-p2.html#oswego / https://www.vintagetools.net/product/oswego-tool-co-8-inch-stilson-wrench-561pc / http://toolarchives.com/node/253 /

An aside on this: the machinist square with B [dot] S logo appears as early as the 1905 catalog.

This is a dental supply company. I found it once before:
SS White Dental
That’s usually a Pexto mark for their Worth sub brand. Check the names in this post for others who used it, see who you like for vises.
It was discussed in the Pexto thread, including here...if i remember correctly this logo was discussed but i haven't been able to find the posting...
...and more substantively, HERE, when I found and posted the TM that Don just reposted.Peck, Stow, and Wilcox owned a bunch of TM's for various brands, including Worth (reg. 1935, first use 1914), and Boro, Iroquois, Tool Island, and - believe it or not, a giant asterisk symbol (which may solve a long-standing GJ mystery!
...and his linking you to the Ben Hurs tools thread, a large asterisk was used by others, believe it or not, despite the PEXTO TM, complicating the ID.That’s usually a Pexto mark for their Worth sub brand. Check the names in this post for others who used it, see who you like for vises.
@Private Lugnutz may have clues