Patent DE-1910-232736

We have a filing date and author match with the Lilenthal museum entry; however the title is a bit different and we perhaps shouldn't rule out the possible existence of another patent filed by this author on the same day.

See also Havel, 1910, L'hélice commandée par deux moteurs and Publication B2p0620e08, 1910, Embrayage automatique du moteur auxiliaire sur les aéroplanes clearly relating to this technology.

• Inventor location: Nancy, France

Patents which are supplementary to this one

• Patent FR-1910-420702 (English title: Apparatus for automatic engagement of auxiliary motor in the case of the principal motor halting, Filing date: 1910-09-02)

Sources

• Lilienthal museum patents ("Anordnung von zwei oder mehreren Motoren in einer Flugmaschine")
• Original patent document and Bibliographic info at DPMA
• Original patent document and bibliography entry at espacenet

Year filed	1910
Year granted	1911
Office	DE
Patent number	232736
Inventors	Adolf Havel
Inventor country	FR
Inventor location
Applicant person	Adolf Havel
Applicant firm
Applicant type	INDIV
Applicant is inventor?	1
Original title	Vorrichtung zur selbsttätigen Einschaltung des Hilfsmotors bei Kraftanlagen mit Haupt- und Hilfsmotor
English title	Device for automatic activation of the auxiliary motor in power systems with primary and secondary motor
Tech fields	engine, motor
Filing date	1910-01-11
Full specification filed date
Application number
Grant date
Granted?	1
Publication date	1911-03-20
Supplementary to patent
Related to aircraft?	1
Serial number
Patent agent
Assigned to
National tech categories	DE 77h.13
IPCs	IPC B64D35/08, IPC F02D17/00, IPC F02D29/02
CPCs	CPC B64D27/00
Family year	1910
First filing?	1
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages	4
Number of diagram pages	1
Number of figures	2
Number of claims	7