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Cochran Family Patents



I posted this on The Jalopy Journal today, but thought you guys might get a kick out of it as well. Essentially, it’s a feature on some of the patents held by my distant family members most well known for the marketing of both the pipe wrench and the Cochran Speed Nut wrench that I’ve featured here before.



In any case, enjoy:

So I gotta lot of beef from family members over my story last week about Frank Cochran and figured I had better do some equal time. So, let me introduce you to James Cochran. James is essentially my great, great uncle once removed (whatever that means). He was born in Georgia, grew up in Kentucky, and found success in life in Chicago when he invented and patented the pipe wrench as well as a number of other tools.

I don’t know a lot about James, but I do know he was fascinated with fasteners or, more specifically, how to fasten them. Starting in the early 1890’s, James patented over 20 different kinds of wrenches. His first success was the Cochran Speed Nut and his last was the good ole pipe wrench that he and his partner, William Sheffler, marketed under the name of Cochran Mfg. & Forging Company.

James and William manufactured tools together for more than two decades, but eventually sold the outfit to the Great Lakes Forge Company in Milwaukee, Wisconsin in 1921. And while this isn’t entirely on topic, I figured you guys would enjoy a gallery of just some of their patents:



Pretty rad, right? Through ancestry.com, I talked to Maureen Cochran who is James’ great grand daughter. I was confused about the number of different names that Cochran used for his patents and was told that he patented tools under his wife’s name as well as all of his kid’s names hoping that those patents would lead to their eventual retirement. No word if that ever panned out or not.

But just to keep this relatively on topic, the first ad I could find for the Speed Nut was actually in a Ford technical manual. I’m guessing that James figured his most obvious market was the early adopter of the Ford Model-T. One wrench was all they needed – The Cochran Speed Nut.

Editor’s Note: I have a huge collection of Cochran Speed Nut and Pipe Wrenches. However, I don’t have a set of Cochran Open ended wrenches and would pretty much sell my soul to have one. So, if you gotta a set or even just one wrench – hit me up!

 


See Comments on the forum.

Private Lugnutz

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Fascinating, Ryan. I have never run into any Cochran tools, but I will keep a keener eye out now, especially for the DOEs.

On a tangential note, I love the illustration! Think about the days when you worked on your engine in a high church collar, skinny tie, and plaid duffel cap! :)

One thing I have noted while doing research (such as paging through vintage books or catalogs, or trolling through Newspapers.com or Google Book results) is how the artwork surrounding mechanics reveals the arc of automotive history apparel, from the well-coifed gentlemen of the brass and steam era through the dapper 30's to the coveralled grease monkeys of the 40's and 50's to modern "technicians".

I have saved a lot of it.

Below is one that caught my eye. A mechanic applying some oil, apparently, wearing a fedora! It was in the book pictured to the right of it.
 

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Private Lugnutz

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I think he is listening to the engine.
As in diagnostic stethoscope.
That's what I thought, leg, so I'm glad you said that. The caption says otherwise, but it's an awfully long stemmed oiler, right? EDIT: I misremembered. You're correct. He's using an oil can with a tube to diagnose engine noises.
 
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ganymede

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Good article.!
I like my patent pending Cochran and find that with a little practice you can get it to work pretty fast.
 

Empty Pockets

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When I was a kid, my father had 2 Cochran Speed Wrenches. I believe they were part of my grandfather's estate. I don't know what happened, but when he passed, I received one. It still works like new.
 

twertsy

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I posted this on The Jalopy Journal today, but thought you guys might get a kick out of it as well. Essentially, it's a feature on some of the patents held by my distan...
To read the rest of this blog entry from The Garage Journal, click here.

I'm curious Ryan, how do Edwin and Michael Cochran fit into the story? I only ask because I see you listed their patents as well.

Todd
 
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jd_1138

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Will someone please explain how that wrench works. The picture doesn't make it clear. Thanks

Looks like the adjustment allows you to change the angle of the head relative to the handle, so you can work around stubborn obstructions to get a nut/bolt out/in.
 
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SuperCat

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Ryan, do you have any pictures of the Cochran open end wrench that you are searching for? I go to flea markets and garage sales somewhat regularly and I will keep an eye open for your wrench, I just need some idea of what I am looking for. First one I find is yours. :thumbup:
 

rmack898

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On a tangential note, I love the illustration! Think about the days when you worked on your engine in a high church collar, skinny tie, and plaid duffel cap!

Lug,

I just came across a picture of my grandfather in 1940 or so, he was a crane operator. He was wearing overalls with an engineers cap but underneath he was wearing a white shirt with a tie. Things have changed a bit since then.
 

AntiqueBen

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I have read that in April of 1920 Larco Wrench & MFG Corp bought Cochran & kept producing Cochran wrenches. Then a few months later in June of 1920 Great Lakes Forge Co bought Cochran. I have been trying to find out what happened to Larco? I know there is a Great Lakes Forge in Chicago and Michigan. You mentioned a Great Lakes Forge in Milwaukee Wisconsin? Do you have any info on them? I cannot find anything online about a Great Lakes Forge in Wisconsin. Ultimately I'm trying to find out anything on Larco Wrench & MFG Corp. There is next to nothing about Larco online. When I read your post I thought you might know more about this or where to find some information. I'd appreciate any help or info you may have. Here's a pic of my Larco 24" and my Cochran 14" pipe wrench.IMG_20210806_205818065.jpg
 

AntiqueBen

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Gotcha. Larco information of any kind is practically impossible to find. If I can figure out any info on the Great Lakes Forge Co that bought Cochran I "might" find some info on Larco.
 

31RAT

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Not sure if yore familiar with this website but it's a good resource for old tool identification. This is a link to the Cochran page.
 

Private Lugnutz

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Picked up this 10-incher yesterday. The adjusting nut is not original. It was missing. I cannibalized one from a 10-inch Ridge, which fortunately fits well enough to operate, albeit too loosely. As @Ryan knows, I have several SPEEDNUT self-adjusting types, but this is the first 1908 patent Model 1910 classic pipe wrench that I have found.

I plan to try to find that logo on the dynamic jaw in a periodical. The "C.P.W." in the interior of it is clearly legible, but I can't make out the rest of it. It looks like something round in the northwest corner and two lines emanating from the southwest corner. They used a logo with a wrench clamped around a globe in advertising, but it doesn't match this outline, and I have never seen a registered trademark.
 

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AntiqueBen

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Nice find. These wrenches are difficult to find in the wild. I found one several years ago. Definitely a unique design. Finding an original adjusting nut will probably be difficult.
 

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Private Lugnutz

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Finding an original adjusting nut will probably be difficult.
Nie impossible. But I'm just happy it's not an odd size or thread.

Much later, in the 30's and 40's, after the industry had pretty much standardized into either Stillson or Ridge type designs, mechanisms to stabilize the dynamic jaw in the housing became the focus of improvements and discrimination between mfgrs. I did a deep dive as a way of distinguishing Ridge from Erie (and therefore Craftsman) pipe wrenches, which are very similar other than the swash plate and the stabilizer. Ridge alone had 7 or 8 successive patents, with only minor differences in the mechanism, all of which were variations on simple embedded leaf springs.

The two-piece Cochran stabilizer (pivoting forged steel piece, and pinned leaf spring, operating together to keep the dynamic jaw and adjusting nut firm) is quite unique, complex, and sophisticated in comparison, emblematic of the bygone era.
 
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