Ellehammer was a very productive danish inventor and his company exists today as maker of fire distuingisher pumps for ships among other things.
He claimed to be the first in Europe to fly in a machine heavier than air, but the flight was not free as it was tied to a rope and a stick in the middle, so it was not recognised.
Anyway -he also made OEM carburators for Model Ts.
Patent that describes the function (note: No bowl) https://www.google.com.mx/patents/US1563705?dq=ellehammer+carburetor&hl=en&sa=X& ei=OWkjU6DaD8Lq4gTcqICADg&ved=0CDgQ6AEwAQ
What's trapped under the spring?
And what is the small brass fitting between the fuel line and the spring trap for?
I do not know, but believe it is described in the patent.
Now I found the ads.Use Google to translate if needed :-)