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seatlanta
01-11-2010, 07:09 PM
My neighbor gave me a lot of clamps like these in the picture. They belonged to his father and his uncle, and were among several boxes of tools that he was throwing out.

http://atlantavariety.com/clamps.htm

I've never seen anything quite like these. There are several sizes, from about 1" up to 3". Are they just general purpose clamps or do they have a specific use?

Thanks.
James (seatlanta)

RobbieKnobbie
01-11-2010, 07:25 PM
Off the cuff I'd say they're for squeezing stuff together:D

Forrest Addy
01-11-2010, 07:29 PM
They're called "home made"

oldtiffie
01-11-2010, 07:30 PM
Off the cuff I'd say they're for squeezing stuff together

You mean they are a 0>3" micrometer set?

Those clamps are nothing special - standard quick-made in-house shop-made clamps for any use that you want to put them to.

They were common on welding benches etc.

They were common early-stage trainee school projects too.

Ken_Shea
01-11-2010, 07:35 PM
James, the home/shop made giveaway is no name and no rotating end on the screw, still useful though.

Doozer
01-11-2010, 07:46 PM
They are C-clamps.
It is like asking what a pencil is for.

--Doozer

aboard_epsilon
01-11-2010, 07:49 PM
think they are part of the carriers for wines and spirits ..
they hold upside down bottles to the shelf at the back of the bar ..
the telescoping other attachments and the optical measuring thingies are missing .

all the best.markj

RKW
01-11-2010, 07:53 PM
!!! Anyone throwing out tools should have their head examined !!!

Besides tools, anything other than actual garbage can always be used by someone ... I'm glad they found you for some of it at least.


several boxes of tools that he was throwing out.

dp
01-11-2010, 07:58 PM
I've never seen anything quite like these. There are several sizes, from about 1" up to 3". Are they just general purpose clamps or do they have a specific use?


They look like the clamps the used to use on old billboards. The backs of billboards had 90 degree bends in the panel edges similar to spot welding tabs and clamps like these were used to pinch them together.

john hobdeclipe
01-11-2010, 09:48 PM
Do they have standard threads? :D

seatlanta
01-11-2010, 10:22 PM
Thanks for all the suggestions.

I have not checked the threads on the clamps, but they look like fairly standard right-hand threads. I've spent the day cleaning grease and rust. This guy had a lot of these clamps. He kept some and I got the majority of them. I asked what his uncle used the clamps for, but he had no idea.

I also thought they looked like home-made clamps, but I just noticed that some of them have an "AMF" or "AMF Co." impression on the body of the clamp.

Here's a link to another picture showing a 1" clamp with the letters:

http://www.atlantavariety.com/clamp%20with%20AMF%20impression.htm

James (seatlanta)

Doozer
01-11-2010, 11:06 PM
Bowling machines maybe?
Never seen clamps like that on a Harley.
--D

ERBenoit
01-11-2010, 11:08 PM
AMF perhaps as in American Machine and Foundry? Not sure what they might have made besides pin setters.

Though that mark doesn't look like the "AMF" trademark that I'm familiar with.

HSS
01-11-2010, 11:17 PM
I found some clamps that looked a lot like those on a roof top condenser where they had welded the condensers to the I-beams. May be weldors clamps like oldtiffie suggested.

Patrick

Machinist-Guide
01-12-2010, 02:44 AM
These are riser block clamps. You clamp 4 of them to a plate and use them to hold the plate off the machine table. Much like you use parallels to hold your work piece off the mill table so you can mill or drill through.
They are very handy. Your parallels stay put as you move your work piece around.

Machinist-Guide
01-12-2010, 02:56 AM
Also:
If you want to drill through 2 plates for example.
Clamp the two plates together on each corner and you will have a riser block under each corner to set on the drill press table so you can drill through.

EVguru
01-12-2010, 05:23 AM
I'm not even going to start on the Cramp vs Clamp schism!

I've got some similar 'devices' at home that belonged to my maternal Grandfather. He was a 'toolmaker' and spent a good part of his life working on paper and card folding machines.

All of his appear to be home made and in some cases quite crude.

Machinist-Guide
01-12-2010, 06:01 AM
Here is a drawing showing what I was talking about

http://machinist-guide.com/images/clamps.jpg

Scishopguy
01-12-2010, 11:49 AM
These are riser block clamps. You clamp 4 of them to a plate and use them to hold the plate off the machine table. Much like you use parallels to hold your work piece off the mill table so you can mill or drill through.
They are very handy. Your parallels stay put as you move your work piece around.

COOL!!! I had never thought of that. It just shows that no matter how long you work in a trade there is always something to learn. ;) That is why I like this forum so much.

Sea Farmer
01-16-2010, 12:26 AM
I also thought they looked like home-made clamps, but I just noticed that some of them have an "AMF" or "AMF Co." impression on the body of the clamp.

Here's a link to another picture showing a 1" clamp with the letters:

http://www.atlantavariety.com/clamp%20with%20AMF%20impression.htm

James (seatlanta)

AMF is a German company that makes some pretty fancy clamping systems, among other things: http://www.amf.de/en/company/amf-an-overview/

Doozer
01-16-2010, 12:38 AM
Boy was I wrong!
These clamps just became instantly -cool-.

Good job Donny and Sea Farmer.

--Doozer

Machinist-Guide
01-16-2010, 02:29 AM
AMF is a German company that makes some pretty fancy clamping systems, among other things: http://www.amf.de/en/company/amf-an-overview/

Welcome to the forum Sea Farmer.
I checked out the AMF site. Best I could tell is the Germans call there parallels support blocks so maybe they would call these clamps "support clamps"
I have always heard the old timer toolmakers call them "riser clamps"

bond77
01-17-2010, 12:47 PM
With a little luck, it can also fit as a drive dog...
http://www.maskinisten.net/userpix/929_dscn4164_medium_1.jpg

Machinist-Guide
01-17-2010, 01:55 PM
Good Tip Bond I never thought of that one. See you can teach an old dog a new trick.

vpt
01-17-2010, 02:07 PM
I'd be worried about it coming off the work used as a lathe dog. Even at very low rpms it can cause bad stuff to happen.

Machinist-Guide
01-17-2010, 02:14 PM
I'd be worried about it coming off the work used as a lathe dog. Even at very low rpms it can cause bad stuff to happen.

Well you do got a point.
Maybe some duct tape for safty.;)

vpt
01-17-2010, 02:42 PM
Yes, a strip of duct tape would do the trick I think.

METALARCHER
01-17-2010, 02:50 PM
Yes, a strip of duct tape would do the trick I think.
Depends on the depth of the wound:D