Differenze tra le versioni di "Twist filler/en"

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Come indicato dal nome, il ''twist filler'' o  sistema di ''caricamento a torsione'' è basato sulla compressione del serbatoio attraverso l'esercizio di una torsione sullo stesso. In questo tipo di caricamento in generale il serbatoio viene realizzato non con un sacchetto, ma con un tubo di gomma la cui estremità posteriore è incollata al fondello del corpo della penna che può essere ruotato, in modo da generare la torsione che ''strizza'' letteralmente lo stesso.
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<noinclude>{{ReferBox|Filling systems}}</noinclude>As its name indicates, the ''twist filler'' is based on the compression of the reservoir through the exercise of a torsion on it. In this type of filling in general the tank is made not with a sac, but with a rubber tube whose rear end is glued to the bottom of the body of the pen that can be rotated, so as to generate the twist that literally "squeezes" the same.
  
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Benché presenti alcuni vantaggi rispetto al tradizionale [[caricamento a levetta]], come una maggiore semplicità meccanica ed il pregio dal punto di vista estetico di non necessitare di una apertura laterale sul corpo della penna, il principale difetto di questo sistema, che ne decretò il sostanziale insuccesso, era la maggiore facilità con cui il serbatoio in gomma poteva rompersi a causa del notevole sforzo imposto sullo stesso dalla torsione.  
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Although it has some advantages compared to the traditional [[lever filler]], such as greater mechanical simplicity and the aesthetic merit of not needing a lateral opening on the body of the pen, the main defect of this system, which decreed its substantial failure, was the greater ease with which the rubber tank could break due to the considerable effort imposed on it by the torsion.  
  
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Il sistema è stato usato principalmente dalla [[A. A. Waterman]] che intorno al 1902 acquisì un brevetto ({{Cite patent|US|744642}} attribuito a ''Harry W. Stone'') ad esso relativo. Altre aziende introdussero sistemi analoghi, o ispirati allo stesso principio della rotazione del fondo della penna per strizzare il serbatoio, come il [[leverless]] della [[Swan]]. Una versione molto particolare di questo tipo di caricamento è stata impiegata su un prototipo di penna della [[Nettuno]] mai commercializzata.<noinclude>
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The system was mainly used by [[A. A. Waterman]] who around 1902 acquired a patent ({{Cite patent|US|744642}}, attributed to ''Harry W. Stone'') relating to it. Other companies introduced similar systems, or inspired by the same principle of rotating the bottom of the pen to squeeze the tank, such as the [[leverless]] of the [[Swan]]. A very particular version of this type of loading was used on a prototype pen of the [[Nettuno]] never marketed.<noinclude>
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==Brevetti correlati==
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==Related Patents==
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{{CategorizeArticle|Tecnica|Vocabolario|Sistemi di caricamento|Glossary|Technology|Filling systems}}
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Versione delle 18:03, 27 ago 2019

Filling systems

As its name indicates, the twist filler is based on the compression of the reservoir through the exercise of a torsion on it. In this type of filling in general the tank is made not with a sac, but with a rubber tube whose rear end is glued to the bottom of the body of the pen that can be rotated, so as to generate the twist that literally "squeezes" the same.

Although it has some advantages compared to the traditional lever filler, such as greater mechanical simplicity and the aesthetic merit of not needing a lateral opening on the body of the pen, the main defect of this system, which decreed its substantial failure, was the greater ease with which the rubber tank could break due to the considerable effort imposed on it by the torsion.

The system was mainly used by A. A. Waterman who around 1902 acquired a patent (nº US-744642, attributed to Harry W. Stone) relating to it. Other companies introduced similar systems, or inspired by the same principle of rotating the bottom of the pen to squeeze the tank, such as the leverless of the Swan. A very particular version of this type of loading was used on a prototype pen of the Nettuno never marketed.

Related Patents

  • Patent n° US-721549, of 1903-02-24, requested on 1901-02-12, of August Eberstein, Boston Pen. Fountain pen.
  • Patent n° US-732117, of 1903-06-30, requested on 1903-03-04, of Albert E. Schaaf, Autofiller. Fountain-pen.
  • Patent n° FR-503751, of 1920-06-17, requested on 1918-10-22, Mallat. Porte-plume réservoir à remplissage automatique avec ajustage de plume invariable.
  • Patent n° GB-141075, of 1920-11-25, requested on 1919-02-13, Mallat. Improvements in or relating to fountain pens.
  • Patent n° GB-141071, of 1920-12-09, requested on 1918-10-22, Mallat. Improvements in or relating to Fountain Pens.
  • Patent n° GB-149315, of 1921-02-17, requested on 1919-08-01, Mallat. Improvements in or relating to fountain pens.
  • Patent n° GB-146930, of 1921-02-24, requested on 1919-07-08, Mallat. Improvements in or relating to Fountain Pens.
  • Patent n° FR-21880E, of 1921-04-09, requested on 1919-02-13, Mallat. Porte-plume réservoir à remplissage automatique avec ajustage de plume invariable.
  • Patent n° FR-22933E, of 1921-09-06, requested on 1919-07-08, Mallat. Porte-plume réservoir à remplissage automatique avec ajustage de plume invariable.
  • Patent n° FR-22935E, of 1921-09-06, requested on 1919-08-01, Mallat. Porte-plume réservoir à remplissage automatique avec ajustage de plume invariable.
  • Patent n° GB-469484, of 1937-07-27, requested on 1936-02-14, of Henry Frederick Charles Burnham, Henry Charles William Burnham, Burnham. Improvements in fountain pens.
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