Detroit Lubricator use/application?

We found this in my father's stuff and have NO IDEA of what it does or what it was used on, any clues?

thanks in advance

That appears to be an updraft carb for a car in the Teens.

I thought so at first but where would the "updraft" go? there is only an air intake (I think), no "goesouta" exit that I can tell ...

all the Detroit Lubricator carbs I have seen say "CARBURETOR" on the plate, this one appears to say "STEWART" whatever that means ...

It is incomplete, there would be a cast iron right angle part to attach this updraft section to the side of the engine. It is for 4 cylinder Dodge.

How about this for gozinta and gozouta???...B

I think your "in" could be for fuel but your "out" would have to be the "in" for air intake, there is just no place for the "out" going into the manifold nor any place to add onto this to have it go somewhere ...

Third picture is top of carb. Float bowl cover has all the lettering and round part at 2 o'clock from the bowl is mixture out, the remaining bolt and empty hole location would hold on the elbow/ throttle section. Doesn't look like mixed air goes out there but it does!

ok, like this then? air in, then mixed around with the gasoline, then out through that tiny little hole?

Layden B is correct on the application.

The "out" is the top of the aspirator valve/dashpot; which moves up to allow more airflow as RPM is increased.

The 90 degree throttle body mentioned by Layden attached on top of the "out". As the throttle body changes the direction of the mixture so that it enters the engine horizontally, this carburetor is technically a "sidedraft" rather than an "updraft".

Really one of the better carburetors in its day. (MOO)

Jon.