David Wilson
Contributor
The page above is from Cressi's 1953 catalogue and illustrates the snorkel and snorkel-less versions of the Sommozzatore mask in figures 9 and 10 respectively. As for the accompanying text:
Italian: "L’occhiale SOMMOZZATORE (con o senza respiratore), (Fig. 9 e 10) è l’occhiale per la profondità. Ha spessori di gomma progressivi e razionali atti a sostenere la pressione dell’acqua, evitando la deformazione e la compressione del vetro sul naso e sulla fronte durante l’immersione in profondità. Tutta la pressione viene ad essere distribuita sul viso in modo uniforme, dando massima aderenza e quindi tenuta all’acqua. Un buon pescatore che raggiunga quote da 10-12 metri in su trova nell’occhiale Sommozzatore un’ottima realizzazione. E’ usato dalla maggior parte dei partecipanti alle gare subacquee ed ha consentito immersioni a 25 m. ed oltre con piena soddisfazione. Il tipo senza respiratore può essere usato col respiratore «Delfino» mentre il tipo con respiratore lo ha incorporato in sé come il tipo Medusa sopraindicato. Il «Sommozzatore» viene costruito in misura grande."
Rough translation: "SOMMOZZATORE goggles (with or without breathing tube) (Fig. 9 and 10) are the goggles for depth. They have progressive and rational rubber thicknesses to support water pressure, avoiding deformation and compression of the glass on the nose and forehead during deep dives. All the pressure is distributed evenly over the face, giving maximum grip and therefore watertightness. A good fish-hunter reaching depths from 10-12 metres up is a great achievement in Sommozzatore goggles. It is used by most participants in underwater competitions and has allowed diving to 25 m. and beyond with complete satisfaction. The non-breathing-tube type may be used with the 'Delfino' snorkel, while the snorkel type has one built in like the aforementioned Medusa type. The 'Sommozzatore' comes in a large fitting."
Let's take a closer look at the Sommozzatore snorkel mask:
We can see from the image that this is a half-mask covering the eyes and nose only. Note the reference to the Sommozzatore as a specialist mask for deep diving. During the early 1950s, concerns were raised about the possibility of masks collapsing onto their wearers' faces under the action of water pressure at depth. So period masks often came with reinforced bodies and extended skirts to withstand the pressure and to distribute it more evenly over the front and the sides of the head. Note too the new float valve design read to shut off the orifice at the end of the inverted U-bend atop the snorkel. Note, finally, the resizing of the mask from a "medium" to a "large" fitting.
We'll return at the weekend to review the evolution of the Sommozzatore snorkel-mask in the mid and late 1950s. In the meantime, stay home and stay safe.