Popgun Pete
Contributor
With enormous hydrodynamic drag if you are a swimmer, not all divers are, such as those involved in underwater work.This patent actually led to a finished product, the Lluch Argonauta mask:
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With enormous hydrodynamic drag if you are a swimmer, not all divers are, such as those involved in underwater work.This patent actually led to a finished product, the Lluch Argonauta mask:
Early cup style goggles were reworked Fernez smoke goggles with alloy cups, then rim seals were added and the natural progression to moulded rubber cups with integral face seals followed, with or without metal lens clamps.The Parra underwater hunting goggles were patented, rough translation below:
UTILITY MODEL for: “IMPROVED GOGGLES FOR USE IN WATER”, in favour of Don. Pedro PARRA MARTINEZ, resident in Barcelona, GOYA street, no. 10
DESCRIPTIVE REPORT
The goggles used in water, for say so-called underwater fishing, are provided, in each of the two lens holders that comprise their frame, with a rubber seal that is applied under pressure against the face, to achieve the necessary leaktightness, in the chamber that is formed between each lens and the corresponding eye, so that water does not penetrate therein. In practice, however, such leaktightness may be difficult to achieve due to lack of adjustment and adaptation of the edge of the rubber lining to the face, due to the differences found in the separation of the eyes between different people.
The aforementioned drawback is corrected with the goggles that are the subject of this Utility Model, whose essential characteristic lies in the fact that the bridge of their frame is made up of an elastic element. In this way, the separation between lenses and eyes can be perfectly adapted to what exists in each case between the axes of the eyes of the person who will use them; adaptation that is carried out automatically and by simply placing the goggles correctly in front of the corresponding eye.
In the drawings on the attached sheet, goggles manufactured in accordance with this Utility Model are represented. Fig. 1 shows said goggles seen from the front, and in Fig. 2, they are represented as seen from above.
As shown in the drawing, the lens-holders 1 are joined as usual by means of the bridge 2, but this one has the peculiarity of being elastic. It can be made of a thread, bundle of threads or rubber cord and even a spring. From what has been said, it will be understood that the practical form of embodiment of the aforementioned bridge may be variable, as will be the way in which the lens-holders 1 are mounted.
Regarding the characteristics of shape, size, and construction details of the goggles themselves, it will be variable, as the essentiality of this Utility Model is applicable to any type and class of goggles used for swimming underwater.
NOTE
It is CLAIMED as the object of this UTILITY MODEL:
1.- Goggles for underwater use, characterised by the fact that the bridge of their frame is made up of an elastic element.
2.- The goggles of claim 1, in which the elastic element referred to therein may be a thread or bundle of threads, a cord, or a rubber band or similar material, a spring, or any other suitable means that presents the necessary elasticity to achieve the intended purpose.
“IMPROVED GOGGLES FOR USE IN WATER”
Barcelona, 22 February 1946.
Pedro PARRA MARTINEZ
We'll have a closer look at the Parra diving mask at the weekend.
Note the vent holes to let air out as you dive down when the foot pockets are pointing upwards.
I found the patents on espacenet, which hosts many European full-text examples. In my postings, I have only uploaded European patents that I have been able to translate into English. Such translations take time, as Google Translate does not always handle the idiosyncrasies of patent language well. Furthermore, in the case of this thread, Spanish is a language I have never had the opportunity to study formally. My foreign languages are French and German, so my efforts with Spanish are based on the limited degree of "intercomprehensibility" among Romance language. One week's visit to Spain during the 1970s is my only contact with the country.The patents seem to be a new addition for this thread. They were not in the previous threads in this series.