SOLVED: si_250 - Hanomag-Stoltz - Dampf-Omnibus - 1907-1908

[sichel]

This seems to be something very special.
For one point: manufactorer, type and year of construction.

[sichel]

Up to Experts.

[FrontMan]

British?

[D-type]

De Dion Bouton?

[FrontMan]

Found it, I think.  Built by S.A. des Générateurs économiques de Paris. 1908? Operated in Berlin by "ABOAG" ?

[sichel]

Not British and not built by De Dion Bouton.
But there is a connection to SAGE, they were licensees of an inventor's goods. The manufacturer of the puzzle-bus used the same licensor.
A bus of this manufacturer was also used by ABOAG for experimental purposes, subsequently taken over by the licensor and transferred to Paris on its own axle for demonstration purposes. Probably you have seen a picture of it, I attach it once. SAGE then modified the drive but was not the manufactorer of the puzzle-bus. Locked for you to bring light into the darkness.

[FrontMan]

Please unlock, as I am floundering in the darkness! My parting shot is Darracq-Serpollet

[sichel]

Too bad, then everyone has a chance again. Unlocked

[D-type]

Can we establish one thing?  Was it steam-powered or powered by a hybrid system?

[sichel]

Yes, it was steam-powered.

[FrontMan]

French patent holder?

[sichel]

No.

[FrontMan]

German patent?

[sichel]

Yes.

[FrontMan]

HANOMAG of Linden

[FrontMan]

Patented by Peter Stoltz of Berlin

[sichel]

  Yes, it is a Hanomag-Stoltz! What was it called at Hanomag and when was it delivered?

[FrontMan]

Now you got me.  20/25hp, 1906?

[sichel]

But I'll let you go again  The naming is rather vague in my source, there is only one right general designation. The delivery took place a little later. Locked for you.

[FrontMan]

30/35hp 1907?

[sichel]

1907 is correct, my source calls the vehicle "Dampf-Omnibus" ('steam-bus'). As it is not certain whether that was the official designation, I'll end the puzzle here.
This is your well-deserved next point 

Peter Stoltz developed for "Motorfahrzeugfabrik Deutschland GmbH", Berlin different steam vehicles. Krupp AG received the exclusive licence for Germany, in addition to Hanomag, "Eisenwerke Gaggenau AG" also acquired a sublicence.
A speciality of the Stoltz design was the steam boiler. The heating pipes are not mounted in a cylindrical boiler, but on tube plates, so called "Röhrenplatten". These panels goods interchangeable and have withstood pressures of 150 bar during test runs. During tests in the "Mechanisch-Technischen Versuchanstalt", Berlin (mechanical-technical testing institute) the plates are said to have burst only at just under 800 bar.
The expected range of the water supply of 80 km was missed by a wide margin during test drives. Already after 20 to 30 kilometres water had to be replenished. The project was not a success.
I only knows photos of two different trucks and there is to be an sprinkler-truck for street cleaning in Cologne. There is also talk of two buses. One bus was built in 1908 for "Hannoversche Straßenbahn AG" (Hanover Tramway) and was also used there. In 1907 one bus was delivered to ABOAG, Berlin and is to be taken over by Stoltz after his retirement. This bus was transferred to the 'Paris Salon' in 1908 and led to the licence agreement with SAGE.

[FrontMan]

Many thanks for the point, and the further insight regarding these machines. I found some information on the matter, which I was about to try and translate.

[sichel]

Then I am now waiting for additions and deepening of the informations.