As exposed in this post, we learned that this french nose flute was probably launched and patented in 1922-23, and got a silver medal at the famous Concours Lépine in 1923.
It was sold by the "Instruments Brilhault", located 17, boulevard Rochechouart, Paris.
I wanted to know more about the instrument and its inventor. It would have been easy to get a copy of the list of the silver medallists of Concours Lépine 1923.
I wrote motivated letters, with copies of all the docs I have in my possession. No anwer. So, I called the Concours Lépine: they had "forgotten" my letter. I tried to relaunch the process, and a stupid and lazy lady finally told me her president Mr. Dorey didn't give the authorization to copy the list (is it a Top Secret classified file?). So I proposed to say a name ("Brilhault") and asked her to check if he was in the list, and what was its forename. She should have called me back... Let's make it short: Concours Lépine is a mess, and the people working there are lazy, non reliable and incompetent. Let's do without, before getting a nervous breakdown.
The Ets. Brilhault were located 17, boulevard Rochechouart. It was a very strategic place! At number 15 was the Gaîté-Rochechouart, which was a famous music-hall stage. Number 17 bis was a movie theater, and all the district was hosting a dozen of music hall stages with Jazz-bands.
The Brilhault shop, at the corner of the piazza:
Just beside the Brihault shop, the Gaîté-Rochechouart:
The Gaîté-Rochechoaurt Jazz-band (The "Syncopaters") in 1921-22, and a drawing called "Gaîté-Rochechouart - Dorville au Jazz-band" dated of 1921:
Those two pictures show there were different kind of Jazz-bands: "serious" ones, and much more funny ones. Indeed, all kind of shows were performed on the stages, from operetta to soldiers comical shows. The nose flutes were really at home at the Gaîté-Rochechouart!
I still have not been able to find the Ocariflute patent, but I found a very interesting one: a 1926 french patent for a musical saw filed by a certain... Achille Brilhault (patent FR 625,881, registered May 2, 1927).
Was this Achille Brilhault the one who was awarded by a silver medal for his Ocariflute? Despite the incompetency of Concours Lépine staff (who would have easily confirmed the forename "Achille"), I am able to answer.
I found that the musical saw produced by Achille Brilhault was named Flaix-Tone, and that the Flaix-Tone was sold... at 17 boulevard Rochechouart!
In Musique-Adresses Universel - Volume 11 (1929), one can read on page 2181:
Brilhault (Flaix-Tone), 17, bd Rochechouart. — Paris.
A detailed radio program announcing the song Salomé (oriental Fox-trot), with a Flaix-Tone accompaniment:
And if it was not enough, in the same music address book, on page 888:
Brilhault, 17 bd Rochechouart (9"). — (Métro, Barbés.) — Inst. à vent. — Inst., pour Jazz, Inst à lame vibrante, Instr. -Jouets. — Paris 66745
That is: Brilhault, 17 bld Rochechouart - Wind instruments - Jazz instruments, Vibrating blade instruments, Toy-instruments.
So, it is now definitely clear that the inventor of the Ocariflute was Achille Brilhault, who patented the first musical saw later, in 1926.
I found no biographic data about Achille, except for some genealogical ones. In the following sheet, it is noted that Achille was "restaurateur" ("restaurant owner") and was the "musical saw inventor". Achille had a brother, Jules-Henri, who was officer of the Tunisian Customs, then engineer in the railways. I found a picture of Jules-Henri, unfortunately none of Achille. Anyway, it is unlikely that Jules-Henri could have had some participation in the Brilhault instruments creation, since he died in 1922 and was apparently based in Tunisia.