Cronologia della pagina
25 ago 2021
nessun oggetto della modifica
+15
Aggiornamento come da nuova versione della pagina di origine
+40
nessun oggetto della modifica
-34
Aggiornamento come da nuova versione della pagina di origine
+40
4 nov 2020
nessun oggetto della modifica
-32
nessun oggetto della modifica
-32
Aggiornamento come da nuova versione della pagina di origine
+80
27 ago 2019
21 ago 2019
Creata pagina con "Finally, a particular version is the one of the Eversharp Skyline, which could also be classified as a breather tube filler...."
-128
Creata pagina con "Another noteworthy variant of the system is the one of Carter, derived from a patent ({{Cite patent|US|1209978}}) of the De Witt-La France, which has a sort of "leash"..."
-48
Creata pagina con "The Conklin with the Endura introduced a version in which only half of the lever being lifted was exposed externally, reducing the size of the slit on the barrel. More..."
-118
Creata pagina con "Other variations of the system concern the way in which the lever exerts pressure on the sac: for example the Eversharp did not use a flexible bar but a flat bar with the..."
-105
Creata pagina con "A more efficient system, later used by other producers including Sheaffer itself, requires the lever to be held in place by a metal ring through it. This is inserted insid..."
-94
Creata pagina con "As mentioned above, there are several different versions of this mechanism. For example, Waterman, in order to circumvent Sheaffer's patent, introduced, based on Barne..."
-65
Creata pagina con "In the rest position the lever is placed horizontally in a slot in the side of the pen body. In the original version of Sheaffer it was held in place by a thin metal pin t..."
-94
Creata pagina con "In the case of the Sheaffer patent the mechanism involves the compression of the sac using a lever that press on an elastic metal bar (the so-called ''spring bar'') sh..."
-69
Creata pagina con "In fact, the ancestry of Sheaffer is seriously under discussion; in fact, there are previous versions of this loading system, a Swedish Johansson patent from 1898 and an A..."
-60
Creata pagina con "center|500px|Diagram of a pen with ''lever filler''"
-12
Creata pagina con "The lever filler is probably the filling system most common among vintage pens (and has also been used, as a form of revival, by some modern manufacturers). Introduced..."
-47