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Apart from the still very primitive constructions present until the first years of 1900, which still provided for some companies (such as [[Swan]] and [[Onoto]]) the presence of the so-called [[overfeed]] the canonical shape of the feed as an element placed under the nib has been developing quite quickly.  
 
Apart from the still very primitive constructions present until the first years of 1900, which still provided for some companies (such as [[Swan]] and [[Onoto]]) the presence of the so-called [[overfeed]] the canonical shape of the feed as an element placed under the nib has been developing quite quickly.  
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Inizialmente si trattava semplicemente di un cilindro di ebanite opportunamente smussato nella parte anteriore posta sotto il pennino per lasciare spazio per la scrittura, dotato sulla parte superiore del ''"[[canale]]"'' di alimentazione attraverso il quale l'inchiostro arriva dal serbatoio al pennino. Le prime variazioni si ebbero proprio nella costruzione del canale (e nella aggiunta di ulteriori scanalature all'interno per favorire il passaggio dell'inchiostro per capillarità. Attraverso lo stesso canale (anche se in seguito sono stati previsti anche possibili percorsi alternativi, scorre l'aria che subentra all'inchiostro che esce dal serbatoio della penna.
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Initially it was simply a cylinder of hard rubber suitably bevelled in the front part placed under the nib to leave space for writing, equipped on the upper part of the ''"[[channel]]"'' supply through which the ink arrives from the tank to the nib. The first variations occurred precisely in the construction of the channel, and in the addition of further grooves inside to facilitate the passage of the ink by capillarity. Through the same channel, even if later possible alternative paths have been foreseen, the air that replaces the ink that comes out of the pen tank flows.
    
[[Image:Spoon-Feed.jpg|thumb|left|Schema dello ''Spoon feed'']]
 
[[Image:Spoon-Feed.jpg|thumb|left|Schema dello ''Spoon feed'']]