There is information at the MAE documentation center.

From Appendix 12: In the index of this publication it is mentioned that this brand has an open folder in the documentation archive at the Le Bourget Air Museum. Pending analysis by the author.

"Schematic and coupling"

-But now we get information from a pneumatic starter for combustion engines. It features a long arm to support the ground.

"Gadget, operator and huge arm"

-The compressed air tank allows several starts.