Posted 8 years ago
Poorboy
(1 item)
Picked this wrench up at a estate sale. The man was a collector of old american and german tool dating from mid 1800-1960's.
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Posted 8 years ago
Poorboy
(1 item)
Picked this wrench up at a estate sale. The man was a collector of old american and german tool dating from mid 1800-1960's.
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Have we figured it out yet ?
Would help to have the length.
It measures 6.875"
Thanks. Neat little wrench. Does it adjust easily? There are probably thousands of patented wrenches with different adjustment mechanisms. I checked several catalogues and could not find this particular design. If there are no markings on it it's just going to be luck that someone knows what it is.
Ron, we are very disappointed ! Thought you would have the patent date & what the inventor had for breakfast the day he filed. I'm still trying to figure out how it works from 1 bloody picture !
Try the web site The Wrenching News .
BB2 - I'm guessing that the lower part of the adjustment shaft is turned with the thumb and forefinger; the threads appear to be a double-spiral and would (?) afford sufficient grip. Alternately, there could have been a sliding collar which is now missing, on the lower part of the shaft, which was pushed up & down turning the shaft and adjusting the head. The head has much less angle to its threads; however I don't have much faith in that guess. It's a cute little bugger.
I think that is the right idea and also the reason they aren't sold today.
UncleRon is correct in the way it operates. The screw spins as if it were new.
In fact i thought maybe this was a prototype because the jaws are flawless.
The screws don't stay like new & that kills the market right there.
Being in new good condition is bad for value?
Poorboy, I don't know how you came up with that from what I said. When a tool gets where it doesn't operate smoothly, the value goes down.
BB2- Now you're confusing me. He said "The screw <does> spins as if it were new" so I'd say that enhances the value.
Poorboy- It doesn't show much use but I seriously doubt that it is a prototype. Beware of that word. Real prototypes are hand-built and often show rough edges where finish is not important to function, signs of rough use from hard testing, and signs of re-fitting when assemblies are fine-tuned. Once all the kinks are worked out the production units are well-finished.
I give up.
here is a similar one:
http://www.datamp.org/patents/displayPatent.php?number=1728282&typeCode=0
I read it wrong.
Tallcakes. How did you track that down?
Poorboy, I forget how exactly I got to that site initially; but you can see other examples by following the links in the tool categories. There are hundreds of similar monkey wrenches...
can also go to wrenchingnews.com and look thru the archive photos; check the number of the interested item and the follow the link below that image to the auction; some of those do have direct links to the patent page. Here's is another example:
http://www.datamp.org/patents/displayPatent.php?pn=523020&id=40951