Thanks!Van Doren / Van Doren Mfg. Co., 56-58 W. Van Buren St., Chicago Heights, IL / est. 1906 inc. Sep 1906 acquired 1915 by American Axe & Tool / patent Feb 25 1913 / https://www.exploringaxehistory.com/post/the-van-doren-origin-of-kelly-vanadium-hatchets /
Van Doren was one of the first companies to use Vanadium in their alloy steel hammer heads.
The company first started making fishing poles before they made hammers. The hammer operation was sold to American Axe.
searching USPTO for that date, and hammer, claw, or nail is not bringing up anything. trying it as application date is blanking. Going ahead to 1919 is also blanking .@RTM - I can't find the patent number on this one. Other specimens online are clearly stamped with patent date of Feb 25 1913, but I'm just not finding it.


It makes it easier to pull nails back out in my opinion. I use a 22 oz. California framer that has a fairly straight head and it does not pull nails anywhere near as easily as my 16 oz. framer with a curved head like yours above.Thanks!
Any idea as to why the claw bends down so much? Was that common in older hammers.
Thanks for the research..
****, just realized if I had used this search, would have limited it to 18 items. Gotta frickin' remember all the tricks for USPTO searching
@Eilif , which of those two link images belongs to your hammer
Thanks!It makes it easier to pull nails back out in my opinion. I use a 22 oz. California framer that has a fairly straight head and it does not pull nails anywhere near as easily as my 16 oz. framer with a curved head like yours above.
Yes. Look through the catalogs of any prominent mfgr (e.g., Atha, Heller, etc) in that era and you will find a variety of hammers with various faces, polls, necks, and claws, including curved, regular (slight curve) and straight (or, often, "ripping").Any idea as to why the claw bends down so much? Was that common in older hammers.
Van Doren trademarked (90,938) "INT-OCEAN" on April 1, 1913. First use October 28, 1911. Van Doren also trademarked (90,937) "VANDOR" on April 1, 1913, claiming first use February 27, 1911. Both TM applications made a point of calling out commerce with Great Britain, New Zealand, and Australia, explicitly, which may help explain the rather odd term (i.e., overseas).The other side had this.
Do you have an example of the marking? Is the date accompanied by a PAT or PAT OFF marking? Could it have been in reference to a TM instead? Remember, it is the US Patent and Trademark Office, and we have seen several of these cases, where the marking is not referring to a patent or patent date, but a TM. They had a lot of TM activity at that time. See above. The reason I ask is, what is patentable about that claw hammer? I'm no framing hammer expert, but it seems unlikely. Looks like a fairly ordinary flat poll, flat neck, flat face hammer, probably with an ordinary adze eye. Composition (i.e., use of vanadium alloy) is not patentable as far as I know. Unless the marking you saw was on a different hammer.Other specimens online are clearly stamped with patent date of Feb 25 1913,
I found one. Marking is "PATD FEB.25.1913" under the Van Doren branding.there are three or four other specimens on the web..
And being ever the skeptic, I wonder if that is a wrong date stamp, again. I was too lazy to go to a high resolution screen to see if everyone was misreading,but I’m giving you two the benefit of skill.I found one. Marking is "PATD FEB.25.1913" under the Van Doren branding.

Thanks,^ In the context of monetary value, "value" is determined by what a prospective buyer is willing to pay at point of sale.
Intrinsic value is a completely different can of worms, and involves a number of factors, one of them being rarity.
There are not a lot of those out there, obviously, or we would see them more commonly (and it might have already been on datamp.org or some other "tool" website.)
I would posit that the oddball eye might have been the cause of more than a few going into scrap metal bins (as opposed to having been re-handled) simply because it would be simpler to "just buy a new one" (as opposed to customizing a stock handle to fit.)
Also factor in they were producing them for less than a decade, and that decade ended over a century ago.
You found a rather uncommon artifact there.