Strange motorized 2 shafted tool ID?

[BuddyC01]

Hey There,
I picked up a couple of flats of misc. from an electrical engineer's estate. I'm curious if anyone here might know what this tool is/was used for? Not a mark, word, number on it anywhere. The knob on top adjusts the speed from 0 to ? RPM. It seems to work well, just not sure what for.

Cheers
BuddyC
IMG_20200119_175032 by Buddy Clark, on Flickr

IMG_4013 by Buddy Clark, on Flickr

 

[4xdog]

Looks like a laboratory mixer, although one older than any I’ve ever used. Two cross-mounted shafts through a gearbox is not unusual for those if they’re configured as a gang stirrer.

 

[BuddyC01]

That sounds cool... I check it out...Thanks

 

[4xdog]

The mounting system is very much a laboratory standard, too, either on a ring stsnd post or aluminum rods in a universal clamping setup.

Hard to imagine there isn’t, or at least wasn’t, a plate listing voltages, speeds, etc. No sign of anything like that, is there?

 

[BuddyC01]

Nada.... So I found a photo of an Eberback mixer that has the same speed control assembly but different motor. I think you gave me something to work with.... Thanks!

 

[Dingleburry]

The labs at work use mixers similar but different to that. I seen this thread earlier and forgot to take a pic before i left.
The speed controller on the end is an auto transformer, at least ours are and that looks similar, but ours use a seperate auto transformer, not mounted on the motor itself. Our gear boxes are also a lot bigger, i think. This is all from memory.
Then on the gearbox output would go basically like a 2-3 foot flexible cable with basically a drill chuck on the other end to hold the mixer shaft.
Aluminum rods will hold a clamp, clamp will hold mixer cable.
It allows to move the mixing head wherever in a lab booth without moving the motor.
Ill take a pic tomorrow.

 

[4xdog]

Lab stirrers can vary a lot in how they're geared. We used to have some terrific old stirrers that were, unfortunately, limited to a few hundred rpm. In general, the more useful ones will go a thousand rpm or more.

To show you what things like that stirrer have evolved into, some of our favorites in my old lab used to be from IKA Werke.

 

[Dingleburry]

Lab stirrers can vary a lot in how they're geared. We used to have some terrific old stirrers that were, unfortunately, limited to a few hundred rpm. In general, the more useful ones will go a thousand rpm or more.

To show you what things like that stirrer have evolved into, some of our favorites in my old lab used to be from IKA Werke.

Guess it all depends what you doing. The low rpm ones i guess you would call agitator/stirrer where a thousand +rpm id consider high speed dispersion, also ALOT more horsepower then a stirrer lol. We use both at work, and the inbetween.
I dont personally use them. The labs do.

 

[4xdog]

Yep -- you're exactly right, Dingleburry, at least relatively so. Some truly high speed lab dispersers will go up to 10000 rpm, but not mixers like we're talking about here.. i find that a high-speed mixer that will reach 1200-1800 rpm is a lot more versatile than a slow-speed agitator.

None of these things are particularly high power, though. For that one would need a serious motor on the end of the shaft, as in some stand-mounted homogenizers. A mixer like the IKA above will mix something like paint, but not something like peanut butter.

 

[BuddyC01]

Being "garage Journal" my first thought was, what are these guys stirring up in their garages. Thanks for straightening me out.

No telling what you might learn in such a great group as this.

Thanks again!!

BuddyC

 

[BuddyC01]

The speed controller on the end is an auto transformer...
Ill take a pic tomorrow.

I'll go along with that. That was my first thought after thinking about some auto transformers I've sold in the past