Sailor's Plunger

Plungers are old and new, particularly in Japan. Some of the first fountain pens arriving in this country were Onoto plunger fillers, and the well known Japanese eyedropper system (::1::, ::2::) of storing ink in the pen is a simplification of the original Onoto system.

However common the Japanese eyedropper is, Japanese companies continued making plungers for some of their models. Pilot’s examples, the P type, are well documented, but these are by no means the only ones.

This is a Sailor, not an Omas.

The clip is clearly signed as Sailor.

Sailor also made some, and such is the case of the pen on display today. It is a small celluloid pen made around 1935. The nib, not that big, is labeled as being a size 20.

The size-20 nib. The engraving reads "14 CR GOLD / Sailor / REGISTERED / PATENT OFFICE / -20-".

These are the dimensions of this pen:
Length closed: 124 mm
Length open: 112 mm
Length posted: 151 mm
Diameter: 11 mm
Weight: 15.2 g (dry)

The plunger, half retracted.

The basic problem of this filling system is its vulnerability. It is very fragile and prone to break down due to failures in the plunger seal.

The plunger, disassembled.

My thanks to Mr. Sugimoto and to Mr. Mochizuki.

Pelikan M800 – Tomiya Tomikei Blue (by Sailor)

Bruno Taut
Nakano, April 25th, 2016
etiquetas: Japón, soluciones técnicas, Sailor, Pilot, Onoto

Twist

I have already said that in the area of fountain pens, we can see Japan as a huge laboratory of experiments with filling systems. Sure enough, several systems developed in America and Europe have been implemented by Japanese companies –pistons, lever fillers, plungers --, but there are many others –A-shiki, easy-drinking system, Nakahara-shiki, among others—that have never been attempted beyond these islands.

To the best of my knowledge, the following pen is an example of the latter.

Figure 1. Two of these pens. Brand unknown, but they implement an interesting filling system. The clips carry two different engravings: "NEW FOUNTAIN PEN" on the red unit; "NEW STEAL" (sic) on the greenish grey.

The pen has no clear indication of the manufacturer, but its construction is remarkable in many ways. But first and foremost because of its filling system.

Figure 2. One of the pens almost completely disassembled: the barrel can be detached from the section. But there is a key part not visible on the picture: inside the bulky brass piece, second from the right, there is another smaller piece that moves along this one.

It is a sac-based system, but with a very original way of pressing (without twisting) the sac. The pen tail can rotate a small angle –about 30°-- with respect to the barrel. Then, a number of small pieces transform that into a movement along the pen axis. The final element is a pressing bar pushed in that longitudinal movement.

Figure 3. These pieces transform the rotation of the back knob (the red celluloid piece on the right) into a movement along the axis of the pen. Inside the central piece there is another smaller one whose notch can be seen through the slit. This internal piece is coupled to the external celluloid knob (see Fig. 4). The central piece is screwed to the barrel.

Figure 4. This is the piece from which the whole filling mechanism is operated. It rotates with respect to the barrel while driving the small piece described on the Figure 3.

Figure 5. On this figure, the whole filling mechanism is assembled outside the barrel. Note how the pressing bard if attached to the set of pieces attached to the actual knob.

As is the case with any sac-based system, twisting the rear knob several times is needed to ensure a good filling of the pen. However, the absence of an internal breathing tube, as is the case in many other systems, hinders the full filling of the sac regardless of the number of twisting moves.

The basic benefit of this system is how secure the filling mechanism is inside the pen. Operating it is, thus, easier than a lever filler, for instance. The negative side is the number of parts required to transfer the rotation into a push onto the sac, plus the need of a good coupling among them.

The construction quality of this filling system is very good—all the pieces, save the external layer of the pan tail and the push bar, are made of brass, and the coupling among them, excellent. The drawback is a tail heavy pen, albeit the total weight of the pen is far from exaggerated at about 20 g.

Figure 6. Steel nib, ebonite feed. The inscription on the nib: "SMOOTH / POSTING / 4 / HARDEST / IRIDIUM / PEN.140".

The pen itself is made of celluloid, and several colors were available. The clip carried different inscriptions –NEW FOUNTAIN PEN and NEW STEAL (sic)--, and can hardly be considered as brand names. Nibs are made of steel, gold plated.

These are their dimensions:
Length closed: 121 mm
Length open: 110 mm
Length posted: 143 mm
Diameter: 11.5 mm
Weight: 20.5 g (dry, no sac)

These are, most likely, postwar pens, but the filling system can be found in some Platon (Nakayama Taiyôdô) pens in the 1930s.

My thanks to Mr. Mochizuki.

Pelikan M800 – Tomiya Tomikei Blue (by Sailor)

Bruno Taut
Nakano, April 13th, 2016
etiquetas: Platon, soluciones técnicas, marca desconocida

Astra Piston

(Note added on January 8th: This text has been amended on this date to correct some inaccuracies and eliminate some uncertain data.)

… or how to make a piston with little hassle.

… or the evolutionary ancestors of Conid’s Bulkfiller.

For many, the piston filler, so dear to German makers, is the filling system of choice, however, it does not come without disadvantages, the most clear being the large space needed to harbor the piston mechanism inside the barrel. All that space, needless to say, is dead space in terms of ink capacity. To minimize this problem several technical solutions have been suggested. The better known of which is the telescopic piston. A more modern strategy is that of Conid for its Bulkfiller model: a piston whose plunger rod is decoupled from the seal and is stored inside the ink deposit once the filling process had been completed.

Maker Astra tried a similar –but not equal— approach in the early 1940s: the plunger that moves the piston seal up and down in the barrel can be unscrewed from it and removed altogether from the pen. And, in fact, it MUST be removed once the pen was filled up and, therefore, the cork seal was at the top of the ink deposit.

The disadvantage of this system is clear: there is the need to keep the plunger rod stored while the pen is in use. Without it, filling the pen is not possible. But there are advantages too:

If compared to a standard piston, this system clearly takes a lot less space in the barrel and the ink deposit is a lot bigger.

The closing piece of the barrel has this particular shape to keep the piston seal from rotating and allowing the rod to be unscrewed.

If compared to the Bulkfiller by Conid, the metal rod is not in contact at all with the ink, and there is not need to create any seal between the rod and the seal itself. In the Bulkfiller, the rod literally moves across the piston seal, and there can be leaks through seal along the rod.

The engraving on the nib reads "DURFLEX / FPT / 4 / EXTRA".

As for the rest of the pen, the Astra is made of ebonite (section) and celluloid (barrel), and implements a steel nib. The dimensions of the pen are as follows:

Length closed: 124 mm
Length open: 116 mm
Length posted: 151 mm
Diameter: 12 mm (barrel)
Weight (dry): 15.5 g
Ink deposit: 2.5 ml.

No filling system is perfect, and this “detachable plunger” is no exception, but there are great advantages to it. The large ink capacity is indeed a powerful argument on its side.

It is not clear where this Astra pen was made. The inscription on the nib suggest an Italian origin. As an anonymous commentator pointed out, Durflex was the brand of the Pecco brothers, and FPT meant "Fratelli Pecco Torino". The owner of the pen bought it at a flea market in Warsaw, and a selling argument was that Polish soldiers used this pen during the Second World War and kept the detachable rod in their breast pocket. Probably an exaggerated claim... Any information on the origin of the brand Astra would be gladly appreciated.

Very special thanks to KDENA.

Inoxcrom Corinthian – Sailor Yama-dori

Bruno Taut
Madrid, December 19th, 2015. Nakano, January 8th, 2016.
etiquetas: Astra, Conid, soluciones técnicas

Chilton Violet

After having seen a great number of filling systems on Japanese pens, both imported from the West (::1::, ::2::, etc.), and originated (::1::, ::2::, ::3::, to name just a few) in Japan, it will be no surprise to find yet another one.

This time, the pen –by the name of Violet— implements the pneumatic filling system initially created by the Chilton Pen Company in 1925. This Japanese pen, however, was manufactured in the early 1950s.

On the barrel, '"VIOLET" / TRADE MARK / Fountain Pen'. And a very Parker clip.

As for the rest, the nib is made of steel and does not carry any reference to the pen brand, which raises the concern of whether this nib was the original unit of this pen. However, that is not the relevant feature of the Violet.

The nib, made of steel, carries the following inscription: "WARRANTED / EASY / BEST / PEN / 1". This unit could be a replacement.

These are its dimensions:

Length closed: 121 mm
Length open: 105 mm
Length posted: 142 mm
Diameter: 11 mm
Weight (dry): 11.5 g

The barrel extended, the pen ready to be filled.

The hole at the barrel end typical of pneumatic fillers.

This pseudo-Chilton Violet is a rare pen even in Japan, but it illustrates the great variety of filling systems explored by Japanese makers long its more than 100 years of history.

My thanks to Mr. Sunami.

Pilot Bamboo – Nagasawa Bokkô

Bruno Taut
Nakano, August 8th, 2015
etiquetas: Chilton, Violet, soluciones técnicas

Prototypes

Prototype pens, proofs of concept, are some of the holy grails of collecting almost anything. The reasons are clear: they are rare –very few units were indeed made-, and they were not supposed to be sold. So, rarity, the added value of any collectable, speaks loudly through prototypes.

Last week, at the annual Mitsukoshi “Fountain Pens of the World” Festival, nibmeister Nagahara Yukio was on duty fixing pens despite the very sad family news. And he had his personal pen case with him.

Nibmeister Yukio Nagahara's pen case.

Few of the pens in there were standard—one of them was the following cross nib.

An unusual cross nib.

Cross nibs, in the Nagahara tradition, are two-fold nibs based on a Naginata Togi. Over it, then, a second set of tines are welded. That is called an “over-cross” nib. This prototype is, on the contrary, an “under-cross” nib. The noble side, engraved, is a flat regular nib, and the crossing half-nib is nested between that one and the feed.

The clean-looking upper side of the "under-cross" nib. Note the two-fold tip of the nib.

The result is a cleaner looking nib, although it does not really ad that much to the well-known over-cross unit. So, this might only be a prototype... or maybe a test for a future change in the geometry of Sailor’s cross nibs. In any event, this nib shows that Sailor has ideas under development. Experiments are indeed needed, and nibmeister Nagahara Yukio is alive and well.

Clear enough--Yukio Nagahara's personal pen. But many would be happy to own such a signed experiment.

And this under-cross pen would be a most valuable possession for mostly any collector.

Pilot Ladypearl – Parker Quink Blue

Bruno Taut
Nakano ward, March 12th, 2015
etiquetas: Sailor, soluciones técnicas, evento, nibmeister Nagahara Yukio, plumín

Feeds

The world of pens, nowadays, is full of reactionary obsessions. It could not be otherwise, for fountain pens are obsolete tools. Consequently, once this point is accepted and understood all cravings are allowed—-ancient materials, old filling systems, outdated manufacturing techniques…

One of the debates involves the material out of which the feed is manufactured. Old pens, before 1950s, used ebonite (vulcanized hard rubber) and around that time different plastics made their way as the material of choice for feeds as it is today. Ebonite, though, is still used today mostly on high-end pens. This is often used as a selling argument, although Montblanc’s flagship pen, the 149, uses plastic feeds. Many a stylophile are happy to buy that argument and swear by ebonite as the ultimate material to provide a good (and generous) flow of ink to the nib.

But, is the feed material that important for the final performance of the pen? Or, in other words, what are the differences between these two materials, plastic and ebonite?

The main difference lies in the way the ink interacts with those two surfaces. Ebonite is hygroscopic and favors capillarity and circulation of the ink along the ink channels.

On the other side, on plastic ink forms drops and its flow becomes more difficult. There are some ways to correct this issue: by making the surface rougher (“unpolishing” it) the specific surface of the channels increases and the ink smears along them. Another strategy was to add some hygroscopic layer to the feed.

But the final conclusion might be that due to that problem –the ink not wetting the plastic feed— ebonite should be the obvious option. However, ebonite carries its own problems to the production line—it is more expensive than plastic and needs to be cut. Ebonite oxidizes in the wrong environment, and its purity (or the presence of impurities in it) plays an important role in the final quality of the manufactured good. The final result is that it is not unusual to see deformed, bent or cracked pieces of ebonite, in feed or in other pen parts.

Ebonite feed from a Platinum pen from around 1935.

Section, nib and feed of a Super T Gester from ca 1960. This feed, made of ebonite, was bended and could not drive the ink to the nib efficiently.

Plastic, on the contrary, can be molded into the desired shape, and is very stable chemically. So, plastic is cheap, fast and reliable.

Two plastic feeds by Platinum from the late 1950s. The one on the left was misstreated, whereas the one of the right has never been used. Both preserve the original shape.

Well designed feeds, on their side, do work well and are able to provide fairly big flows of ink. Case in point—the Nagahara’s two- and three-fold specialty nibs are attached to plastic (ABS) feeds. There are no complaints in the pen community about their reliability, and they show that a proper design does the job despite the limitations of the material.

Plastic feed of a cross-music nib by nibmeister Nagahara. But in fact, all feeds are the same for a given nib size in the Sailor catalog.

Some argue that plastic feeds have not passed the test of time and that we cannot really asses whether they might degrade with time. And they go further into saying that we can also find perfectly preserved ebonite feed after many years of use or storage. But we also know –and that is the point here— that ebonite feeds are vulnerable.

After all these considerations, personal preferences and romantic ideas come. And they are welcome, for writing with these tools is in itself romantic and anachronic.

Pilot Custom 74, music nib – Gary’s Red-Black

Bruno Taut
Nakano, August 15th, 2014
etiquetas: soluciones técnicas

Bulb Fillers

On the Chronicle describing the Surat pen, I mentioned that the bulb filling system was well known in Japan. That system, let us remember, consists in an ink deposit ended with a flexible rubber sac, and with a breathing tube inside.

From top to bottom, a Worla, a Surat (a Nakahara system, but that is a variation of the bulb system), a Tomei, and a SSS.

Today I am showing some examples from mostly unknown companies: Tomei, Worla, Meizen. The much better known SSS and Sailor also manufactured this filling system. And many others as well, most likely.

A Meizen pen in red urushi. This model was made after 1953, as the nib is marked with the JIS logo. Meizen was a brand active in Tokyo until the late 1950s or early 1960s.

A Sailor bulb filler from the early 1950s.

Albeit there are few, if any, indicators of the age of these pens, it is reasonable, given the construction style, to assume they were made around 1950.

Pilot Vpen – Diamine Graphite

Bruno Taut
Shinjuku, July 23rd 2014
etiquetas: Tomei, Worla, Meizen, SSS, Sailor, Surat, soluciones técnicas.

Cheaper

Some months ago, over a year now, the Italian brand Delta launched a strange nib. Strange, but with a lot of hype on the benefits of its unusual structure.

The Delta Fusion is, in actual terms, a steel nib topped with a gold hat. This combination, Delta advertisement claimed, provided an improved flow because the interface steel-gold raised the temperature of the ink, this rendering it more fluid…

Delta's Fusion nib, made by Bock.

The reverse side of the very same nib--an untipped stub. These two pictures are courtesy of KMPN.

Really?

If so, any gold plated steel nib should provide the same effect. Let us remember that interfacial effects only involve some few layers of material –of gold and steel in this case— and no especially thick coatings were needed.

Two "fusion" nibs by Pilot.

But on top of this fallacy there another one—Delta’s nib is not even a novelty! A long time ago in a galaxy far away Wearever created another hybrid nib. On this case, however, the writing material –or that supporting the writing point—was gold, and steel was used to attach the nib to the feed and to the section.

A "hybrid" nib by Wearever. The steel plate holds the gold nib in place.

Both cases follow the same argument—how do we reduce the gold content of the nib while preserving the added value of the gold nib itself? A number of strategies have been attempted along the history of pens. Delta’s is simply the last one—and the most ridiculous of the lot.

My thanks to Wagner member Shokubutsuen and to KMPN, whose pictures of the Delta Fusion nib are greatly appreciated.

Pilot Custom 74, music nib – Gary’s Red-Black

Bruno Taut
Shinjuku, July 23rd 2014
etiquetas: plumín, Delta, Wearever, soluciones técnicas, Bock

Nakahara-shiki (中原式)

I finished the previous Chronicle with the picture of an interesting but mostly unknown pen—a Surat. Now, given the reactions that picture triggered it seems that further information is in order.

I discovered this pen through a fellow stylophile from Kansai (Osaka region). Mr. Mochizuki had found a big number of them at some flea market. And, even better, many of them were complete with box and papers—like the one I am now presenting.

On the manual, the pen is described as featuring an original filling system names as Nakahara-system (中原式, Nakahara-shiki). However, upon opening the pen we only see a bulb filler –a rigid cylinder closed with a rubber sac. Nothing new as bulb fillers were one of the earliest self-filling systems and can easily be found in American, European and Japanese pens.

Basic parts of the Surat. In the middle, the "magic center", or breathing tube. Note the conic piece on the left end. It works as a valve against the section of the pen.

The Surat, though, does present an original detail. Inside the ink deposit, the breathing tube is not attached to the feed. On the contrary, this breathing tube –named “magic center” by the manufacturer— can move back and forth inside the deposit. The conic piece on the front part works like a valve to avoid emptying the deposit when depressing the rubber bulb. In this regard, this system reminds of two Pilot’s creations: the pulsated piston A-shiki, and the current CON-70 converter. The system works efficiently and the deposit is filled up in about 10 strokes of the bulb. This means that the ink enters the deposit through the “magic center” despite not being attached to the feed.

On its side, the manufacturer also claimed that this “magic center” balanced the internal pressure and prevented ink leaks. Whether this is real or just hype is at anybody’s guess.

The blind cap displays, on this picture, the black button that touches the rubber bulb enough to release a drop of ink out of the feed. A clear mistake in the design.

The Surat also displays an unsettling detail—the blind cap protecting the bulb has some sort of push button at the end. Its movement is not wide enough to depress the rubber bulb in any efficient way and, therefore, it cannot be used to ink the pen. But it does touch the bulb enough to release a small drop of ink through the feed. The manual simply mentions the existence of this button and does not comment on its actual function. This problem is just a flaw in the design, but does not affect the writing performance of the pen.

Finally, the deposit can be unscrewed from the section and the pen could also be filled with an eyedropper or a syringe.

These are the dimensions of the pen:

• Length closed: 129 mm
• Length open: 115 mm
• Length posted: 151 mm
• Diameter: 12.5 mm
• Weight (dry): 12.1 g
• Ink deposit: 2.2 ml

All in all, this pen seems another experiment in filling systems carried out in Japan in the last 100 plus years.

The nib is an extra-fine point with a hint of flexibility. It is made of stainless steel and carries the following inscription: “WARRANTED / HARDEST / IRIDIUM / STAINLESS / SPECIAL / PEN”.

The pen is also signed on the barrel (“SURAT / TRADE MARK / PATENTED 6564”). The instruction sheet speaks of Tokyo Suishindô as the manufacturing company. No address is provided.

And nothing else we know so far. This is just another pen that would rarely make its way in any book on pens despite its interesting features. But a detailed description of the technical evolution in pens would allow for some way of dating it. My best guess is that this Surat was manufactured around 1950.


My thanks to Mr. Mochizuki and to Poplicola-san.

Universal, music nib – Pelikan 4001 Brilliant Brown

Bruno Taut
Nakano & Shinjuku, July 2014
etiquetas: Surat, soluciones técnicas