Difference between revisions of "Sistemi di caricamento/en"

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In order to write it is necessary to unscrew the bottom and slightly withdraw the shaft attached to it, so as to retract the piston from its blocked position and re-enable the flow of ink towards the nib. Closing the bottom will stop the ink flow again, thus preventing leaks.
 
In order to write it is necessary to unscrew the bottom and slightly withdraw the shaft attached to it, so as to retract the piston from its blocked position and re-enable the flow of ink towards the nib. Closing the bottom will stop the ink flow again, thus preventing leaks.
  
== Direct compressio of the ''sac'' ==
+
== Direct compression of the ''sac'' ==
  
 
At the beginning of the 1900's, there was a great impulse in the search for a system that would allow the filling operation to be carried out automatically. During this period, a series of filling systems began to be produced, in which the ink was kept inside an elastic rubber sac. In this way it was possible to carry out the loading by compressing the empty sac, so as to exploit the subsequent expansion of the same to suck the ink from the bottle by immersing the nib assembly.
 
At the beginning of the 1900's, there was a great impulse in the search for a system that would allow the filling operation to be carried out automatically. During this period, a series of filling systems began to be produced, in which the ink was kept inside an elastic rubber sac. In this way it was possible to carry out the loading by compressing the empty sac, so as to exploit the subsequent expansion of the same to suck the ink from the bottle by immersing the nib assembly.
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== Pneumatic fillers ==
 
== Pneumatic fillers ==
  
Si sono classificati in questa sezione i sistemi di caricamento basati sulla compressione pneumatica di un sacchetto di gomma flessibile. Quest'ultimo viene cioè compresso dalla pressione atmosferica generata dal sistema di caricamento per farne uscire l'aria che verrà sostituita dall'inchiostro nella fase di decompressione in cui il sacchetto si riporta, per elasticità, alle sue dimensioni normali.
+
This section classifies loading systems based on the pneumatic compression of a flexible rubber sac. The latter is compressed by the atmospheric pressure generated by the filling system to release the air that will be replaced by the ink during the decompression phase, when the sac returns to its normal size due to its elasticity.
  
 
=== ''[[blow filler]]'' ===
 
=== ''[[blow filler]]'' ===
{{:blow filler}}
+
{{:blow filler/en}}
  
 
=== ''[[pneumatic filler]]'' ===
 
=== ''[[pneumatic filler]]'' ===
{{:pneumatic filler}}
+
{{:pneumatic filler/en}}
  
 
=== ''[[Touch Down]]'' ===
 
=== ''[[Touch Down]]'' ===
{{:Touch Down}}
+
{{:Touch Down/en}}
  
 
=== ''[[snorkel filler|snorkel]]'' ===
 
=== ''[[snorkel filler|snorkel]]'' ===
{{:snorkel filler}}
+
{{:snorkel filler/en}}
  
== Caricamenti a sfiatatoio ==
+
== Breather tube fillers ==
  
Questi sistemi di caricamento sono accomunati dallo sfruttare la presenza di un tubetto con funzioni di [[sfiatatoio]] (il cosiddetto ''[[breather tube]]'') che consente di eseguire il caricamento ripetendo più volte una qualche azione meccanica (diversa a seconda dei diversi sistemi di caricamento) che consente di creare una compressione dell'aria all'interno del serbatoio della penna. Le varietà di maniere in cui questa compressione viene effettuata è risultata estremamente ampia, ma nella maggior parte dei casi prevede un qualche meccanismo che agisce su un bulbo flessibile.  
+
These filling systems have in common the use of the presence of a ''[[breather tube]]'' which allows to perform the refill by repeating several times some mechanical action (different depending on the different filling systems) which allows to create a compression of the air inside the pen tank. The variety of ways in which this compression is carried out has been extremely wide, but in most cases provides some mechanism that acts on a flexible bulb.  
  
Lo sfiatatoio è inserito nell'alimentatore e mantenuto in posizione centrale rispetto al corpo della penna che normalmente viene a svolgere la funzione di serbatoio. In fase di compressione l'aria presente esce dallo sfiatatoio, da cui, a causa della depressione venutasi a creare, viene caricato l'inchiostro che finisce nel serbatoio; la presenza dello sfiatatoio fa sì che l'inchiostro caricato non venga espulso nelle successive fasi di compressione, fintanto che non si arrivi a riempire tutto il serbatoio fino al livello dello sfiatatoio.
+
The breather tube is inserted in the feeder and kept in a central position with respect to the body of the pen, which normally acts as a tank. During the compression phase, the air in the pen comes out of the blowhole, from which, due to the depression created, the ink that ends up in the tank is loaded; the presence of the blowhole means that the ink loaded is not expelled in the subsequent compression phases, until the entire tank is filled up to the level of the blowhole.
  
La presenza dello sfiatatoio in alcune realizzazioni ha inoltre un secondo effetto positivo perché consente di equilibrare immediatamente la pressione dell'aria interna al corpo della penna con quella dell'aria esterna, dato che in questo caso lo sfiatatoio fornisce una via di comunicazione fra interno ed esterno, si evitano così i vari problemi di fuoriuscita dell'inchiostro in caso di sbalzi di pressione.  
+
The presence of the breather tube in some realizations also has a second positive effect because it allows to immediately balance the pressure of the air inside the pen body with that of the external air, since in this case the breather provides a way of communication between inside and outside, thus avoiding the various problems of leakage of the ink in case of pressure changes.  
  
 
=== ''[[bulb filler]]'' ===
 
=== ''[[bulb filler]]'' ===
{{:bulb filler}}
+
{{:bulb filler/en}}
  
 
=== ''[[caricamento Vacumatic|vacumatic]]'' ===
 
=== ''[[caricamento Vacumatic|vacumatic]]'' ===
{{:Vacumatic filler}}
+
{{:Vacumatic filler/en}}
  
 
=== ''[[aerometric filler]]'' ===
 
=== ''[[aerometric filler]]'' ===
{{:Aerometric}}
+
{{:Aerometric/en}}
  
 
=== ''[[stantuffo tuffante]]'' ===
 
=== ''[[stantuffo tuffante]]'' ===
{{:stantuffo tuffante}}
+
{{:stantuffo tuffante/en}}
  
 
=== ''[[Ink-Vue filler]]'' ===
 
=== ''[[Ink-Vue filler]]'' ===
{{:Ink-Vue filler}}
+
{{:Ink-Vue filler/en}}
  
 
=== ''[[Visofil filler]]'' ===
 
=== ''[[Visofil filler]]'' ===
{{:Visofil filler}}
+
{{:Visofil filler/en}}
  
 
=== ''[[accordion filler]]'' ===
 
=== ''[[accordion filler]]'' ===
{{:accordion filler}}
+
{{:accordion filler/en}}
  
== Caricamenti a depressione ==
+
== Vacuum fillers ==
  
Si sono riuniti in questo gruppo tutti quei sistemi che prevedono che il caricamento avvenga attraverso la realizzazione di una depressione all'interno del corpo della penna in modo che l'inchiostro venga risucchiato tramite questa. In questo caso è in genere il corpo stesso della penna a fare da serbatoio, e può essere costruito in materiale trasparente così da consentire la visualizzazione del livello di inchiostro.
+
This group brings together all those systems that require that the filling takes place through the creation of a depression inside the body of the pen so that the ink is sucked through it. In this case it is generally the body of the pen itself that acts as a reservoir, and can be made of transparent material so as to allow the visualization of the ink level.
  
Come per gli altri sistemi che usano il corpo della penna come serbatoio anche in questo caso si ha il vantaggio di poter disporre di un maggior volume per contenere l'inchiostro, ma si ripresenta lo svantaggio che l'aria residua contenuta nel serbatoio è sensibile alle variazioni di temperatura, il che rende più facile, per l'aumento di volume in caso di riscaldamento, i casi di perdite di inchiostro, specie quando la penna è quasi scarica ed il volume di aria maggiore.
+
As with other systems that use the pen body as a reservoir, this also has the advantage of having a greater volume to contain the ink, but the disadvantage is that the residual air contained in the reservoir is sensitive to changes in temperature, which makes it easier, due to the increase in volume in case of heating, the cases of leakage of ink, especially when the pen is almost discharged and the volume of air is greater.
  
 
=== ''[[pump filler]]'' ===
 
=== ''[[pump filler]]'' ===
{{:pump filler}}
+
{{:pump filler/en}}
  
 
=== ''[[syringe filler]]'' ===
 
=== ''[[syringe filler]]'' ===
{{:syringe filler}}
+
{{:syringe filler/en}}
  
 
=== ''[[plunger filler]]'' ===
 
=== ''[[plunger filler]]'' ===
{{:plunger filler}}
+
{{:plunger filler/en}}
  
 
=== ''[[piston filler]]'' ===
 
=== ''[[piston filler]]'' ===
{{:piston filler}}
+
{{:piston filler/en}}
  
== Altri ==
+
== Others ==
  
Si sono riuniti in quest'ultimo gruppo tutti gli altri sistemi di caricamento, accomunati proprio dal fatto di non aver un fattore comune che consente di classificarli in maniera omogenea.
+
All the other filling systems have been brought together in the latter group, which have in common the fact that they do not have a common factor that allows them to be classified in a homogeneous manner.
  
 
=== ''[[capillarity filler]]'' ===
 
=== ''[[capillarity filler]]'' ===
{{:capillarity filler}}
+
{{:capillarity filler/en}}
  
 
=== ''[[cartridge filler]]'' ===
 
=== ''[[cartridge filler]]'' ===
{{:cartridge filler}}
+
{{:cartridge filler/en}}
  
 
=== ''[[converter]]'' ===
 
=== ''[[converter]]'' ===
{{:converter}}
+
{{:converter/en}}
  
== Riferimenti esterni ==
+
== External references ==
* http://www.pennaio.com/Sistemi_di_Riempimento.html
+
* [http://www.pennaio.com/Sistemi_di_Riempimento.html] Page of the original sketches used in this page
* http://www.richardspens.com/?page=ref/fillers/fillers.htm
+
* [http://www.richardspens.com/?page=ref/fillers/fillers.htm] Page on filling systems from Richard Binder's website
* http://www.rickconner.net/penspotters/filling.html
+
* [http://www.vintagepens.com/filling_instructions_vintage_pens.shtml] Page on filling systems from David Nishimura website
* http://www.rickconner.net/penoply/filling.html
+
* [https://web.archive.org/web/20180105095740/http://www.rickconner.net/penspotters/filling.html] Page on filling systems from Penspotters
* http://www.vintagepens.com/filling_instructions_vintage_pens.shtml
+
* [https://web.archive.org/web/20130616225156/http://www.pentrace.net/penbase/Data_Returns/full_article.asp?id=259] Article about filling systems on PenTrace, first part
* http://www.pentrace.net/penbase/Data_Returns/full_article.asp?id=266
+
* [https://web.archive.org/web/20130617013636/http://www.pentrace.net/penbase/Data_Returns/full_article.asp?id=266] Article about filling systems on PenTrace, second part
* http://www.pentrace.net/penbase/Data_Returns/full_article.asp?id=259&tname=Technical
+
* [http://www.penhero.com/PenGallery/Parker/ParkerDuofoldFiller.htm] Article of Jim Mamoulides  on [[Parker]]'s [[button filler]]s
* http://www.penhero.com/PenGallery/Parker/ParkerDuofoldFiller.htm
+
* [https://www.penexchange.de/english/sites/klassiker/kolbenfueller.html] Article on Penexchange on [[piston filler]]
* https://www.penexchange.de/english/sites/klassiker/kolbenfueller.html
+
* [http://www.penexchange.de/english/sites/klassiker/pneumatik.html] Article on Penexchange on pneumatic fillers
* http://www.penexchange.de/english/sites/klassiker/pneumatik.html
+
* [http://www.penexchange.de/english/sites/klassiker/selbstfueller.html] Article on Penexchange on [[button filler]]s
* http://www.penexchange.de/english/sites/klassiker/selbstfueller.html
 
* http://kamakurapens.invisionzone.com/index.php?showtopic=1057&st=0&p=5173&#entry5173
 
  
== Note ==
+
== Notes ==
 
<references/>
 
<references/>
  
== Ringraziamenti ==
+
== Thanks ==
Un grazie di cuore a Fabio Moricci, il [http://www.pennaio.com/ Pennaio], che ci ha gentilmente concesso l'uso dei suoi schizzi come base per la realizzazione degli schemi tecnici dei vari sistemi di caricamento.
+
A big thanks to Fabio Moricci, the [http://www.pennaio.com/ Pennaio], who kindly gave us the use of his sketches as a basis for the realization of the technical diagrams of the various loading systems.

Revision as of 21:32, 10 June 2019

The creation of new filling systems has always been, especially in the golden age of the development of the fountain pen, one of the major factors of technical innovation, and for this reason also the birth of new companies; In this field the most famous examples are the Conklin, born for the invention of the Crescent filler and the Sheaffer, which entered the market with the creation of the lever filler, but many other less known companies (such as the Onoto, the Dunn, the Moore or the Chilton) have had a similar origin.

The history of the fountain pen is in fact inextricably linked to that of the various systems that over the years have been designed to fill the ink. In particular, in the early 1900s all manufacturers competed to introduce new filling systems, often unnecessarily complicated and not very functional, which were then used to promote the superiority of their pens.

Below are the main loading systems used by the various manufacturers throughout the long history of the fountain pen from its origins to the present day. The various systems have been grouped by affinity of operation, and the various groups are presented in an approximate chronological order of introduction.

Direct filling

This first grouping includes all those filling systems that require the pen to be loaded by directly inserting the ink into the barrel. These are the most primitive loading systems, used at the beginning of the fountain pen history. In most cases they have been replaced since the beginning of the 1900s by systems that allow automatic filling.

In the systems illustrated in this section, the body of the pen also acts as a tank, and there is no mechanism to automate the loading of the ink, which is usually entered by an eyedropper; the variants proposed relate only to the different methods used to give access to the tank.

eyedropper filler

The eyedropper filler, also called drop filler, is the first filling system used in fountain pens and in reality it cannot be considered even a real filling system, since in essence there is no "system".

In this case, in fact, the pen is filled by removing the nib assembly from the barrel, which is used directly as a tank. The refill operation is carried out, once the access to the tank has been obtained, with the introduction of ink to be carried out usually with a dropper, which in the original versions was supplied by the manufacturer together with the pen. Once the refill was completed, the nib assembly had to be reassembled on the barrel in order to use the pen.

Diagram of a eyedropper filler pen

Because of its simple construction, this "system" was adopted by all manufacturers from the 19th century to the dawn of the development of the fountain pen, and remained in use until the beginning of the 20th century. The system is simple, especially in terms of technical requirements for construction, and also has the advantage of allowing a large capacity of ink, greater than any other, as determined only by the size of the pen body.

However, it has many drawbacks, the first of which is undoubtedly the inconvenience of filling operations, since to refill a pen you have to disassemble the section with the nib, usually wet with ink, and store it in a separate place where it does not stain and does not risk falling. The refill operations are very uncomfortable, it is necessary to have a dropper or similar tool, and in general the operation of the transfer of ink, having to keep always well vertical the body of the pen that acts as a reservoir, is delicate and at risk of stains and spills of ink.

A second drawback arises from the fact that with wear, especially in lower quality models, having the ink in direct contact with the body of the pen can cause leaks at the junction between the barrel and nib group once it loses the seal. Moreover, having to unscrew and screw the latter, the risk of staining the hands, especially in the presence of a body that has been full of ink until then, is always quite high. The body of the pen then had to be made only of inert material that was able to resist contact with the corrosive agents present in the inks, which at the time of its introduction was only the hard rubber.

A last drawback, often very annoying, is that since in this case the ink contained directly in the body of the pen, when it is emptied, there is a considerable sensitivity to changes in pressure and temperature of the air contained within the pen barrel, which is the greater the greater the volume available. The biggest problems were then in the case of air travel, where variations in altimetric pressure invariably caused a leakage of ink.

But with these pens to cause a leak is often sufficient only the heat of the hand that holds the pen. This is transmitted to the air contained inside the barrel, causing an expansion that alters the balance of pressure between inside and outside. This makes it relatively easy to obtain a loss of ink. Although today it is back in fashion in some models, for its retro taste, it remains, however, provided that it can really be considered as such, a primitive filling system.

safety filler

The filling system called safety filler was born as an evolution of the eyedropper filler system. To simplify the filling operations without having to disassemble and store the section with the nib unit, and to avoid ink leakage as a result of differences in pressure and temperature, in this case the nib is mounted on a mechanism that allows you to retract it inside the body of the pen. From this feature comes also the name of retractable with which we often identify the pens that use this filling system.

Diagram of a Safety pen

The system involves that, after inserting the nib into the body of the pen, the latter becomes accessible for filling, to be done with the usual eyedropper, and with the same problems (except that of storing the nib group in a safe place) as previously seen. In this case there is less volume available for the ink, as the inside of the barrel is also occupied by the mechanism, but always more than enough. To use the pen, simply reuse the mechanism in reverse to return the nib to the working position, making it come out of the body of the pen.

Once the nib has returned to the inside of the barrel, the pen can be hermetically sealed using a flat-bottomed cap equipped with suitable gaskets that allow it to be totally guaranteed against the leakage of ink, a characteristic to which the name safety is due, with which the pens equipped with this filling system are called. In this case, in fact, there is no possibility that the ink, due to pressure imbalances, can escape from the nib and deposit in the cap, since the latter simply serves as a cap for the barrel; all pressure imbalances are then immediately eliminated when the cap is opened.

This safety feature was a big step forward at a time when ink leaks were very common, and the holding of the caps, often simply locked by pressure on the pen barrel, was very problematic. From this point of view, pens safety remain superior to any modern pen. Moreover, the hermetic closure of the cap, which also includes the nib assembly, allows to reduce to practically zero the possibility of evaporation of the ink, which is very difficult to dry inside the pen, thus allowing the use of inks much thicker than the ordinary ones. For these peculiar characteristics Waterman has continued to produce a line of these pens, aimed at artists and musicians and aviators, until the early '40s.

The charm of this filling system lies in the mechanical complexity of its realization, which often shows the pinnacle of the technologies of the time: in fact, the nib group is generally moved thanks to a helical screw driven by the rotation of the bottom of the pen. In working position it will hermetically close the barrel by means of a gasket, while in rest position it will leave complete access to the inside of the pen.

With these pens it is essential to remember to open the cap always in a vertical position, and never to close it without having first retracted the nib inside the barrel, to avoid damaging the tip. Since this was a common drawback, some models (the first introduction of this innovation is attributed to Montblanc) require the presence of a special safety mechanism (usually a pin mounted in the center of the cap that beats on the nib assembly), which thus prevents it from closing if it has not been completely withdrawn inside the body of the pen.

The safety filler was born in the United States in the last decade of 1800, although it is not possible to define precisely an inventor, it is attributed if not the invention at least the massive introduction on the market to Waterman, which was the main U.S. manufacturer to adopt it on a large scale.[1] However, it has had a much greater success in Europe, where at the beginning of the century practically all the producers (and in particular the German ones, among which the Kaweco stands out, who also made some developments) made use of this system, and where it has remained in production much longer.

Although it is classified, perhaps unjustly, among the primitive loading systems, in reality the safety filler has resisted on the market much longer than other filling systems created in later periods. In particular, in Europe there are mass-produced models that use it until the 1920s. Because of its historical value, which sees it as substantially the first mechanical system dedicated to filling the pen, it continues to receive an undeniable interest from collectors, many of whom have a particular preference for safety pens.

non-leakable filler

A notable variant of the safety filler is the peculiar filling system adopted by Moore for its Non-Leakable pens, for which three distinct patents were filed, one in 1893 (nº US-501895) and two in 1896 (nº US-567151 and nº US-567152). The principle is always to use a recessed nib assembly, but in this case instead of using a helical screw, there is a linear sliding type.

Diagram of a pen with Non-Leakable filler

The system has, compared to the traditional safety filler, the advantage of an enviable mechanical simplicity, in this case in fact the sliding of the nib group is achieved through the use of a sleeve placed on the bottom of the pen that is made to slide back and forth on the shaft of the same. At the bottom that closes the sleeve is hooked with a rod the nib group, which emerges through a gasket watertight from the bottom of the barrel, so it can be moved into writing position or returned to the body of the pen.

With the nib in the retracted position the pen can be loaded or closed like any other traditional safety, so much so that Moore sold its own pens leaving the factory already loaded with ink, as further evidence to support the actual truthfulness of their name Non-Leakable.

The mechanical simplicity of the system, based on the simple linear sliding of a rod, is the strong point of this mechanism, much more robust and easy to made compared to the complexity of that used in the other retractable pens; all that was required was a good precision in the tolerances of the mechanical machining and good quality gaskets.

In addition to the Moore the system was also used by the Montblanc in their first Rouge et Noir models, almost certainly brought to Germany for the foundation of the company by Arthur Eberstein, who had previously worked for the Moore.

security eyedropper

This "system" is found exclusively on Japanese pens, and can be considered a variant of the plunger filler of the Onoto, from which it was probably inspired. On a mechanical level, in fact, the mechanism is essentially identical, but in this case it is not used to fill the pen, but only to block the flow of ink to the nib when the pen is closed. It is not known an inventor of this mechanism, that it is found on around all Japanese pens produced until the years '30 from companies like the Pilot and the Sailor.

Diagram of a pen with safety eyedropper filling system

The pen is filled by unscrewing the nib group and inserting the ink directly into the body of the pen, as for the ordinary eyedropper filler. However, to avoid possible losses, which would be disastrous for the traditional clothing of the Japanese (the kimono), the pens equipped with this system are equipped with a piston mounted on a shaft operated through the bottom of the pen. When the bottom is screwed on, the piston, which serves exclusively as a blocking valve, comes into contact with the nib group, blocking the access of the ink to the same, so as to prevent any possible leakage.

In order to write it is necessary to unscrew the bottom and slightly withdraw the shaft attached to it, so as to retract the piston from its blocked position and re-enable the flow of ink towards the nib. Closing the bottom will stop the ink flow again, thus preventing leaks.

Direct compression of the sac

At the beginning of the 1900's, there was a great impulse in the search for a system that would allow the filling operation to be carried out automatically. During this period, a series of filling systems began to be produced, in which the ink was kept inside an elastic rubber sac. In this way it was possible to carry out the loading by compressing the empty sac, so as to exploit the subsequent expansion of the same to suck the ink from the bottle by immersing the nib assembly.

The idea of using a rubber sac as an ink tank helped to solve some of the problems encountered until then. In particular, since the ink was no longer in contact with the material of the pen barrel, it was also possible to use materials that were susceptible to corrosion. Moreover, if the rubber tank is well positioned and is not placed in contact with the walls of the drum, the layer of air that separates it from it acts as thermal insulation, and the elasticity of the bag compensates for the problem of increased pressure due to the heat transmitted by the hand that holds the pen.

However, there are also drawbacks: first of all, the size of the tank decreases, since the space inside the barrel of the pen must contain it, along with all that is necessary for the compression system. Moreover, the sacs tend to deteriorate, breaking or losing their elasticity, and must be replaced, thus introducing a whole series of maintenance problems. Finally, the complexity of the construction increases considerably, and with it the possibility of failure.

In this second section we have collected all the simplest and most primitive filling systems that provide some form of mechanical compression action performed directly on the rubber sac, or better, on the so-called pressure bar a metal bar that is placed (or glued) on the sac to allow you to apply the compression to it in a uniform manner.

crescent filler

The first truly efficient and functional automatic filling system based on the compression of a rubber tank was the famous crescent filler, designed by Roy Conklin' who patented it in 1901 (nº US-685258), which was introduced to the market by the company of the same name founded by him, the first example of the success of a brand due to the invention of an innovative filling mechanism.

Diagram of a pen with crescent filler

The crescent filler is based on the realization of a particular pressure bar on which a metal crescent shaped bow is welded (from which derives the name given to the system by its inventor). The bow comes out of the body of the pen through a side slit made on the shaft of the same. By pressing on the headband you can directly compress the sac and thus quickly and easily fill the pen.

To avoid accidentally pressing the crescent filler the pens were also equipped with a ring retainer that went to fit into the slot under the bow, so that it was locked in an open position outside the pen. When it was necessary to load the pen it was enough to rotate the ring, cut on one side, to bring the position of the cut in correspondence of the slit, so that the bow could go down.

The system was simple and effective, and also allowed for better filling than the later lever filler, as the rubber tank could be completely compressed. Despite its technical superiority, however, the projection of the bow from the body of the pen was quite unpleasant from an aesthetic point of view, and this decreed its inexorable decline.

match-stick filler

The match-stick filler system is one of many systems designed at the beginning of the century to try to automate the fountain pen ink filling. In this case it was a matter of compressing the rubber tank through the use of a match (or a toothpick or other similar tool) that went to press, through a hole made on the shaft of the pen, on the compression bar.

Diagram of a pen with match-stick filler

The problems of this mechanism were mostly related to providing adequate positioning to the pressure bar (it was usually glued). The system was not particularly sturdy, nor elegant, and it assumed however the possession of a match, without which it turned out useless. To this problem some producers had obviated making the clasp dismountable and usable to the place of the match, or creating an opportune protuberance on the head of the cap or using some alternative form in order to furnish an adequate partridge.

The system is therefore quite primitive since no one had found a solution to its most important problem, that in case of breakage of the inner rubber bag, the ink could escape from the hole on the body of the pen with the imaginable unpleasant consequences.

coin filler

The coin filler is a variant of the previous match-stick filler system in which instead of a match the user pushes directly on the pressure bar using a coin or a medal or similar object, often elliptical in shape to allow a smaller width of the slot made on the pen body. Also in this case, in fact, the pressure is exerted through a lateral opening made on the barrel of the pen.

The drawbacks are substantially the same of the match-stick filler, soothed from the fact that a coin is an object generally more common, and it is not necessary to be a smoker. The larger size of the slit on the body, however, made the pen less elegant and more prone to problems. Often the slit is identifiable with respect to the case of a toggle pen in which the latter has been lost, by the presence of an additional round central hole slightly larger than those of the slit.

Diagram of a pen with coin filler

The system was used by Waterman in some models between 1913 and 1914, which were sold with a special coin. The scarce practicality of the system led to the disposal in less than a year, which makes these pens (that sometimes can be confused with later models with lever, but missing the same) rather rare. But even rarer and much sought after by collectors, are the coins supplied with the pen, since most of them were lost.

pull filler

Pull filler/en

sleeve filler

Sleeve filler/en

hump filler

Hump filler/en

Lever fillers

Below are the main loading systems used by the various manufacturers throughout the long history of the fountain pen from its origins to the present day. Many of these systems were born as an attempt to circumvent the original patent of Sheaffer, or to find alternatives that could distinguish the pens that used them compared to the competitors.

The principle of these loading systems always remains that of compression, and subsequent expansion to suck the ink from the bottle, of a rubber sac; therefore, the general considerations on advantages and disadvantages made in the previous paragraph apply. The substantial difference is in the mechanism with which the compression is carried out, however also in this case it is generally made use of a rigid pressure bar, pressed by the mechanism of the lever, to distribute uniformly the pressure on the sac.

lever filler

Lever filler/en

spoon filler

Spoon filler/en

hatchet filler

Hatchet filler/en

levetta di fondo

Levetta di fondo/en

Sac mechanical compression fillers

This section brings together all the other loading systems based on the mechanical compression of a rubber sac, but carried out by means of a mechanical system that does not refer directly to the lever principle, and therefore used as a legally conclusive alternative to the system introduced by Sheaffer.

button filler

Button filler/en

twist filler

Twist filler/en

leverless

Leverless filler/en

switch filler

Switch filler/en

Pneumatic fillers

This section classifies loading systems based on the pneumatic compression of a flexible rubber sac. The latter is compressed by the atmospheric pressure generated by the filling system to release the air that will be replaced by the ink during the decompression phase, when the sac returns to its normal size due to its elasticity.

blow filler

Blow filler/en

pneumatic filler

Pneumatic filler/en

Touch Down

Touch Down/en

snorkel

Snorkel filler/en

Breather tube fillers

These filling systems have in common the use of the presence of a breather tube which allows to perform the refill by repeating several times some mechanical action (different depending on the different filling systems) which allows to create a compression of the air inside the pen tank. The variety of ways in which this compression is carried out has been extremely wide, but in most cases provides some mechanism that acts on a flexible bulb.

The breather tube is inserted in the feeder and kept in a central position with respect to the body of the pen, which normally acts as a tank. During the compression phase, the air in the pen comes out of the blowhole, from which, due to the depression created, the ink that ends up in the tank is loaded; the presence of the blowhole means that the ink loaded is not expelled in the subsequent compression phases, until the entire tank is filled up to the level of the blowhole.

The presence of the breather tube in some realizations also has a second positive effect because it allows to immediately balance the pressure of the air inside the pen body with that of the external air, since in this case the breather provides a way of communication between inside and outside, thus avoiding the various problems of leakage of the ink in case of pressure changes.

bulb filler

Bulb filler/en

vacumatic

Vacumatic filler/en

aerometric filler

Aerometric/en

stantuffo tuffante

Stantuffo tuffante/en

Ink-Vue filler

Ink-Vue filler/en

Visofil filler

Visofil filler/en

accordion filler

Accordion filler/en

Vacuum fillers

This group brings together all those systems that require that the filling takes place through the creation of a depression inside the body of the pen so that the ink is sucked through it. In this case it is generally the body of the pen itself that acts as a reservoir, and can be made of transparent material so as to allow the visualization of the ink level.

As with other systems that use the pen body as a reservoir, this also has the advantage of having a greater volume to contain the ink, but the disadvantage is that the residual air contained in the reservoir is sensitive to changes in temperature, which makes it easier, due to the increase in volume in case of heating, the cases of leakage of ink, especially when the pen is almost discharged and the volume of air is greater.

pump filler

Pump filler/en

syringe filler

Syringe filler/en

plunger filler

Plunger filler/en

piston filler

Piston filler/en

Others

All the other filling systems have been brought together in the latter group, which have in common the fact that they do not have a common factor that allows them to be classified in a homogeneous manner.

capillarity filler

Capillarity filler/en

cartridge filler

Cartridge filler/en

converter

Converter/en

External references

  • [1] Page of the original sketches used in this page
  • [2] Page on filling systems from Richard Binder's website
  • [3] Page on filling systems from David Nishimura website
  • [4] Page on filling systems from Penspotters
  • [5] Article about filling systems on PenTrace, first part
  • [6] Article about filling systems on PenTrace, second part
  • [7] Article of Jim Mamoulides on Parker's button fillers
  • [8] Article on Penexchange on piston filler
  • [9] Article on Penexchange on pneumatic fillers
  • [10] Article on Penexchange on button fillers

Notes

  1. But the company has done so using many patents of Francis C. Brown, of Caw's

Thanks

A big thanks to Fabio Moricci, the Pennaio, who kindly gave us the use of his sketches as a basis for the realization of the technical diagrams of the various loading systems.