Now you have it Paul!
There seem to be a delay of about three years from the the appearance of Némethy's designs to the mention of it with Scientific American.
This machine was built by
Emil von Némethy (as R.Keimel gives his name) who owned a factory in
Arad (today Romania), though I don't know what kind of factory that was. The construction of his
"Flugrad" (flying wheel) started somewhen in 1899 but it was completed in 1901.
As this design does not look that complicated I believe he had some problems with his gasoline engine.
Then the picture is obviously a montage. It never flew and I don't think it would have, even if started from a roof.
Némethy belived his roof-like wing designs would create an "airbearing" (Ger. Luftkeil) below that would carry his machine. A second creation appeared in 1903 (pictured in the 1907 Scientific American article) and the last one in 1910 but Némethy had to give up his trials after the Anzani engine was damaged and he run out of money.
Paul, you repeated your typo with the city "Arad" but I would never make that an issue.

Of course full score and the honour to offer the next challenge is yours!
The scoreboard after challenge #094 -
Némethy Flugrad, 1901 - is:
16.60 Rbailey
12.20 Varese2002
9.20 Aquilius
7.70 aerohydro
6.70 richard B
6.30 matte_kudasai
6.00 Cruze
6.00 YavorD
5.50 Airarticles ===> have to wait 12 hours
4.00 Flamingo ==> may start immediately
3.30 Rod_Filan
2.00 berman
2.00 joegertler
2.00 Lodzermensch
1.10 Froggy
1.00 Doc
1.00 paolomiana
1.00 sobrien
0.40 Wind In The Wires
Cheers
Aquilius