Mystery Mixer oil bath air

Could anyone ID this mixer & oil bath air cleaner?
Who could have made it?
What model could it fit?

Has "plunger" inside throat.
Note the two fharnstock clip electric terminals at the bottom.

Thanks To All..... ..

Also see;
http://home.comcast.net/~tickpop/8_A_mixer_-_oil_bath_air_a.jpg

The rod at the top connects to the choke thernostat.

The brass knob pointing upward is the manual choke.

The electrical coil at the bottom is for electric choke during cranking by the "automatic start" feature of the light plant.

The port just above the coil, open to the left side of the photo connects to the "air horn" of the carburetor.

The flanged mounting bracket bolts to the cast iron valve cover of the engine for support.

I'll try to remember to snap a photo of the setup on one of my oil generators, and post it for you.

A quick GOOGLE search turned up the photo below, shot from the wrong side of the engine, but still gives you and idea of where your unit came from: