Author Topic: Who first invented barrier blocks and when?  (Read 1164 times)

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Offline DavideAndreaTopic starter

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Who first invented barrier blocks and when?
« on: June 22, 2023, 08:55:23 pm »
I get the sense that the Buchanan Construction Company made the first barrier blocks but I can't get much info on that. Ideal bought Buchanan and that history seems to be lost. Also, TE sells barrier blocks under the "Buchanan" name.

Or maybe Cinch Jones did. Their 1959 catalog lists them.

So I am asking for leads from this community.

In case it's unclear, these are barrier blocks: .

And these https://cdn11.bigcommerce.com/s-tnsp6i3ma6/images/stencil/original/products/5153/23713/605155__44715.1594319583.jpg?c=2 are not: they're terminal blocks.

(This is for a book I'm writing.)
« Last Edit: June 22, 2023, 10:26:47 pm by DavideAndrea »
 

Offline Stray Electron

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Re: Who first invented barrier blocks and when?
« Reply #1 on: June 22, 2023, 09:54:39 pm »
   I don't have time to chase this down at the moment but if I understand what you're referring to as barrier blocks, then my USMC M38A1 jeep has them and it was built in 1953.  It's not a standard Jeep, it was built as a Forward Air Controller's vehicle and was packed full of radios and all of the necessary wiring.
 
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Offline Sal Ammoniac

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Re: Who first invented barrier blocks and when?
« Reply #2 on: June 22, 2023, 10:16:52 pm »
What's a barrier block?
"That's not even wrong" -- Wolfgang Pauli
 

Offline Benta

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Re: Who first invented barrier blocks and when?
« Reply #3 on: June 22, 2023, 10:24:24 pm »
Seems to be useful in Minecraft.
 

Offline DavideAndreaTopic starter

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Re: Who first invented barrier blocks and when?
« Reply #4 on: June 22, 2023, 10:25:02 pm »
> What's a barrier block?

This is a barrier block: https://i.ebayimg.com/images/g/2ScAAOSwOIxcwX6J/s-l960.webp
« Last Edit: June 22, 2023, 10:27:42 pm by DavideAndrea »
 

Online Shock

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Re: Who first invented barrier blocks and when?
« Reply #5 on: June 22, 2023, 10:29:32 pm »
It's an open screw terminal block with a bit of isolation (typically plastic molding) between terminals.
Soldering/Rework: Pace ADS200, Pace MBT350
Multimeters: Fluke 189, 87V, 117, 112   >>> WANTED STUFF <<<
Oszilloskopen: Lecroy 9314, Phillips PM3065, Tektronix 2215a, 314
 
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Offline Sal Ammoniac

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Re: Who first invented barrier blocks and when?
« Reply #6 on: June 22, 2023, 10:49:39 pm »
> What's a barrier block?

This is a barrier block: https://i.ebayimg.com/images/g/2ScAAOSwOIxcwX6J/s-l960.webp

Thanks. When the OP mentioned "Buchanan Construction Company" I was expecting something to do with building construction, not the things used in wiring.
"That's not even wrong" -- Wolfgang Pauli
 

Offline DavideAndreaTopic starter

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Re: Who first invented barrier blocks and when?
« Reply #7 on: June 22, 2023, 11:47:56 pm »
   I don't have time to chase this down at the moment but if I understand what you're referring to as barrier blocks, then my USMC M38A1 jeep has them and it was built in 1953.  It's not a standard Jeep, it was built as a Forward Air Controller's vehicle and was packed full of radios and all of the necessary wiring.

I asked my uncle, who has a 1950's Willys, and he sent me this picture:





 
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Offline Stray Electron

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Re: Who first invented barrier blocks and when?
« Reply #8 on: June 23, 2023, 12:42:17 am »

  DavideAndrea,  My ad blocker (or something) is blocking your picture so I don't know what your point is. But I'm pretty certain there were no barrier blocks that came standard in any of the old Jeeps. Between my father and I we've owned five of them made from 1944 to 1964 and I still have full sets of manuals for all of them.  I went and got out the 1944 manual for the MB that we used to own and it does show that the wiring used ring terminals and screws in the ignition switch and so forth but I don't think there were any barrier blocks in them and there are none shown in the pictures in the manual. My '53, and all of the normal ones that I have seen, uses Douglas connectors and Canon plug style MS connectors for all of the standard equipment.  My '53 only has the BBs because of the military radios systems that were added to it to convert it to a model AN/MRC-35A.  I used to have pictures online of it and there is one other known example (in Iceland!) but all of the pictures seem to have disappeared.  You can search for AN/MRC-35A and see if you can find any of the many pictures that used to be online.  There are other similar (not 35As)  MRC radio jeeps out there too. And I do have the manual here somewhere, I just need to find it!
 

Offline DavideAndreaTopic starter

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Re: Who first invented barrier blocks and when?
« Reply #9 on: June 23, 2023, 01:08:23 am »

My ad blocker (or something) is blocking your picture

Does this link work? https://postimg.cc/GHn7FKxt
 

Offline EPAIII

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Re: Who first invented barrier blocks and when?
« Reply #10 on: June 27, 2023, 10:53:03 am »
Talk about spark and sputter! That's enough to scare the heebie-jeebies out of me.



   I don't have time to chase this down at the moment but if I understand what you're referring to as barrier blocks, then my USMC M38A1 jeep has them and it was built in 1953.  It's not a standard Jeep, it was built as a Forward Air Controller's vehicle and was packed full of radios and all of the necessary wiring.

I asked my uncle, who has a 1950's Willys, and he sent me this picture:


Paul A.  -   SE Texas
And if you look REAL close at an analog signal,
You will find that it has discrete steps.
 
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