Thank you for the likes, Angelo and Iowwall. And I'm grateful for the posting about snorkels, knowing how Scubaboard members are so divided on the subject.
As with diving masks, Technisub marketed a wide range of snorkels and it is difficult, if impossible, to distinguish between models made by Technisub and models carried by Technisub but made by its partner France's La Spirotechnique.
The first Technisub breathing tube for consideration is the "Atmos", a Greek word meaning "vapour" or "steam" most frequently found in combination with the word "sphere" in the word "atmosphere". Here is the Atmos snorkel in a
1964 issue of
Mondo Sommerso:
Italian: "
ATMOS. Flusso unidirezionale che fornisca aria sempre pura - espulsione spontanea dell'acqua per gravità."
Rough translation: "
ATMOS. Unidirectional flow providing always pure air - spontaneous expulsion of water by gravity".
Here it is in the
1965 Technisub caralogue:
The caption begins in the same way as the previous one does, but goes on to say that the snorkel has been scientifically designed to ease breathing. Here is another image from the same year:
I searched for a patent, drawing a blank despite Luigi Ferraro's record of filing and obtaining patents for his previous fin and mask designs. So far the only sources of information has been the terse catalogue entries posted above. Here is the snorkel in
1968:
Italian: "
ATMOS. Respirate aria fresca! Scientificamente studiato per facilitare la respirazione - con scarico dell'acqua per gravità - particolarmente indicato per l'osservazione - bicolore grigio-perla e nero. art. 801 - L. 1.500".
Rough translation: "
ATMOS. Breathe fresh air! Scientifically designed to facilitate breathing - with water discharge by gravity - particularly suitable for observation - two-tone pearl grey and black. art. 801 - L. 1,500".
And in
1969:
Italian: "
ATMOS - respiratore a due vie per respirazione igienica - 802 - 1.500".
Rough translation: "ATMOS - two-way breathing tube for hygienic breathing - 802 - 1,500".
The Atmos snorkel did not survive the 1960s. Perhaps the design looked too unusual, too bulky or perhaps it did not work in the manner intended and described. Ferraro was certainly a miracle worker when he designed Rondine full-foot fins with open toes and inclined blades and low-volume, compensation-friendly Pinocchio masks, but he did have his "off-days" as we shall later see.