Capless Incompatibilities

The current Pilot’s Capless line of pens is formed by three basic models—the regular Capless (Vanishing Point in some markets), the slim Capless Decimo, and the twist knob Fermo. The theory goes that all nib units are interchangeable among all the models, and this brought me to say that Capless pens were empty boxes—choose the nib of your preference and dress it up with the body that matched your attire of the day, for instance.

The two Capless pens--the regular size on top, and the slim Decimo on bottom.

That was indeed my intention. I wanted to use a very pleasant F nib in the lighter and slimmer Capless Decimo, but I could not do it. The problem is that golden-looking nib units, made of gold or of stainless steel, are a tad thicker that those plated with Rhodium. As a result, these thicker units do not slide smoothly in their movement inside the Decimo pen. In the worst case, the nib unit becomes stuck inside and does not retract completely.

The origin of the problem lies, upon close inspection, on the notch to lead the nib into the right position inside the pen. On the pictures, it can be seen that those notches are different in size—both bigger and slightly thicker on the golden units.

18 K gold Capless nibs. The differences on the notches are clearly visible on this picture. Their shapes, their sizes,...

...and their thickness are different.

I must also say that my golden-looking nibs are older than those rhodiated, and this issue might have been corrected on later produced units. Or maybe not. Either case, checking this detail in the notch is important for the proper function of the Capless Decimo in connection with a golden nib.

These problems had already been reported on a previous chronicle on the Capless Sesenta.

Platinum Glamour – Sailor Sei-boku

Bruno Taut
July 17th, 2012
etiquetas: Pilot

A-shiki (A-式)

Some weeks ago I describe a green celluloid Pilot pen. The main argument of the text was about the uncertain manufacturing date given the mixed information the pen provided.

The green celluloid pen described some weeks ago.

I described the pen as an eyedropper with shut-off valve, and that was not only wrong, but it made no sense given the structure of the valve. That filling system, let us remember, had the special feature of a sliding sheath with a cone-shape ending. But if the valve could slide along the axis, unscrewing the tail knob would not do much in order to open the access to the section.

The clip has the same design as that on the green celluloid pen.

A demonstrator Pilot from late 1940s with the A-shiki filling system. Note the sliding sheath on the picture on bottom.

In fact, that was not an eyedropper pen, and the filling system is a sort of “pulsating plunger filler”. It is a plunger filler that needs to be operated repeatedly –three or four times— to fill the ink deposit. The sliding sheath provides an incomplete seal to prevent the ink from flowing out of the deposit on the down strokes of the system. Its efficiency relies on the tight fit between the axis and its seal on the barrel end.

The section, left, and the sealing sheath, right, in detail.

This system is called A-shiki (A-式), and was implemented by Pilot in the late 1940s. This shows that the green celluloid pen was not a frankenpen but a true product of its time—1950.

The pen illustrating this chronicle is a beautiful example of a demonstrator pen with this A-shiki filling system.

Even the feed is transparent on this demonstrator.

My thanks to Mr. Niikura.

Pilot Short – Sailor Doyô

Bruno Taut
July 8th, 2012
etiquetas: Pilot, soluciones técnicas

Coming Soon

The long awaited book Fountain Pens of Japan, by Andreas LAMBROU and Masamichi SUNAMI, is expected to be released in time for the incoming pen show of Washington DC (August 9 to 12). The authors intend to attend the event.

The reason for the delay in the publication lies in a number of problems related to the color rendition at the time of printing.

Pilot Short pen – Sailor Doyô

Bruno Taut
July 6th, 2012
etiquetas: libro, Japón, evento

Icons in Japan

I can think of very few truly iconic pens in Japan. On the contrary, in the West it seems that all major brands have one or several icons that both identify and symbolize their glory—Parker 51, Sheaffer’s PFM, Waterman Patrician,… They all are well known and documented, and it is not too difficult to find them as they were produced in fairly big numbers. Whether the price is high or low is a different question.

Two Parker 51: the one on top is an aerometric filler; that on bottom, vacumatic.

But in Japan, I was saying, the case seems different. Pilot’s Capless family of pens –more a concept than a single pen given the number of variations and evolutions along almost 50 years of history—is one of them. Another is the all metal pocket pen Myu 701, also made by Pilot. Both, Capless and Myu, fit the three characteristics previously mentioned: well known, well documented, relatively common.

Capless, Capless, Capless. Different models from the mid 1960s to the present time.

The obvious question is why these differences between Western and Japanese markets. Why didn’t other Japanese companies –other than Pilot, that is-- create true symbols of their brands? Is that something that is done on purpose? Is it a secondary effect of the great admiration for foreign pens Japanese stylophiles profess?

Pilot's M90 and Myu-701. The former is the modern re-issue of the icon from the 1970s.

On another text I will speak about another possible icon, or almost-icon, in Japan.

Platinum Glamour – Sailor Sei-boku

Bruno Taut
July 7th, 2012
etiquetas: Pilot, Japón, estilofilia

Brick in the Wall

Consumerism is indeed a brick in the wall of the economic system now collapsing. A system both unfair and corrupted.

In a nutshell, that is the essence of my reluctance to consider myself as a collector. Now, the stakes are higher—people are evicted everyday, people in Greece and in Portugal and in Spain are being humiliated by being forced to give up on hardly gained rights…

Is there any room to speak about such superfluous tools as fountain pens? Are pens and stylophiles just bricks in the wall?

Sailor pocket pen, inlaid nib – Wagner red-black ink

Bruno Taut
June 11th, 2012
etiquetas: mercado, metabitácora

Transitional or Else

ADDENDUM (July 14th, 2012)

There are several corrections to be made to this text:

1. This pen is not a frankenpen. Save the logo on the barrel –the N encircled by the lifebuoy— everything matches the date engraved on the nib—1950. That is especially correct for the filling system.

2. This pen is not an eyedropper, as I mistakenly said. It implements the A-shiki (A-式), a pulsated plunger filler, system developed by Pilot in the late 1940s.

More information on the chronicle entitled A-shiki (A-式) of July 14th, 2012.


1938 was the year in which Namiki Manufacturing Company Ltd. changed its name to Pilot Fountain Pen Company Ltd., and, at the time, the letter N of the logo –the N encircled by the lifebuoy— was replaced by a P. So, this detail was an easy element to date a Pilot pen. Or so the theory went. But there are also anomalies.

The pen, capped. Note the modern looking clip.

Today’s pen is a Pilot made of green celluloid. The filling system is eyedropper with a sealing valve manned by a metallic knurled tail knob. As was the case for a previously described Pilot, the knob thread is cut on the inner side of the barrel.

The pen, open. The engraving on the barrel reads as follows: "PILOT / THE PILOT PEN (N logo) MFG. CO. / MADE IN JAPAN". That on the nib says "STANDARD / PILOT / -<3>- / MADE IN / JAPAN". The date stamp is engraved on the reverse.

Another interesting feature is the structure of the sealing device. This time rod connected to the tail knob has a plastic sheath that actually seals the ink deposit to the section. This sheath can be removed from the rod when the barrel is detached from the section, as can be seen on the pictures.

On the left hand side, the metallic knob shows its thread. It screws on the barrel by means of a thread cut on the inner wall. On the right hand side, the sheath that actually seals the ink deposit.

The sheath, in yellowish plastic, connected to the section.

The pen, according to the sticker, cost JPY 150, and it shows that the pen belonged to some time after the Second World War. But the engraving on the barrel shows an N in the lifebuoy as the logo. The pen clip also shows some more modern design, similar to that in the Pilor Super series from the late 1950s, that departs from the usual clips in pre-war pens. The nib, finally, provides key information: it was manufactured on April 1950 (450).

The pen, disassembled.

The, what do we have here? Some would say that this is a frankenpen made up of different parts from different times. But the only anachronic sign is the logo on the barrel. The rest –price, nib, sheath in the sealing valve, clip, metallic knob— are consistent with the nib date of 1950. A frankenpen is no longer such is that was the way it went out of the assembly line, and in making this pen Pilot might have used old parts —the barrel— still available at those times of scarcity.

All this is mostly speculation, and no certain answer can we now conclude other than dating the nib, just the nib, in 1950.

These are the dimensions of this pen:

Diameter: 13 mm.
Length closed: 131 mm.
Length open: 120 mm.
Length posted: 157 mm.
Weight (dry): 16.5 g.

Pilot Custom Heritage 91 – Wagner red-black ink

Bruno Taut
June 16th, 2012
etiquetas: Pilot

Innovation (III). Analysis

We recently saw how nibmeister Yamada managed to turn the screw of the nib a little bit more. Opposing two nibs does indeed surprise whoever saw them, as has been reflected on some fora. What is the point of such an experiment, many ask.

Actually, two nibs, four tines, two feeds offer a huge field for experiments, and the final performance depends on the configuration of all those elements. Beyond my first approach –asymmetric vs. symmetric nib sets— there is room for a more careful analysis.

A basic feature of these nibs is their capability to change the line width. In some cases, in a very drastic way —either a fine line or a wide-as-a-brush line—; in some other, the change can be more progressive and it depends mostly on the angle between pen and paper. But there is a lot more.

The different curvatures in the nib sets allow for different line widths. On the Senator, top pen, the change between a thin and a very thick lines is more progressive than on the Pelikan on the bottom.

Asymmetric sets, with one of the nibs basically untouched, preserve the possible flexibility of the upper nib. Then, the effect of pressing the pen on the paper is more complex: lifting the upper tip uncovers that of the second, lower, nib, and this one provides its own supply of ink. So, the thicker line does not rely on just one feed but on both of them, and the whole set is less prone to ink starvation.

On more symmetric structures, with both nibs bended, the whole set becomes fairly rigid. This was in fact the purpose of one of Mr. Yamada’s creations—a fountain pen for a user who tended to push the pen down a lot when writing. In a sense, this idea is not new, and nibs under the name of script or manifold or posting were successful to provide a rigid tool to be used with carbon paper.

A very rigid nib set.

On these symmetric sets, the final configuration of the nib points can also favor the use of the pen at non-conventional angles. Or, at least, with the nib rotated about 90 degrees with respect to the natural position. At this angle there are two half-spheres of iridium, belonging to two different nibs, and both with ink ready. At this writing angle, the set is very rigid. This characteristic, though, is not limited to symmetric nibs and asymmetric units can also write at non-conventional angles.

A nib set suitable to be used at unconventional angles. Note the symmetric tip.

Symmetric sets allow for writing with the tip, of course, and with both slits. The later lays fairly broad lines.

An asymmetric nib, in a Senator pen, writing sidewise.

Conclusion: In the aim of creating nibs with several line widths, the Mr. Yamada’s idea of opposing two nibs offers new variables and degrees of freedom. The whole nib has now two feeds and two slits, and each nib-feed set works very independently from the other until the point in which both tips come together.

My thanks to Mrs. Arai and to Mr. Yamada.

Pilot Capless 1998 model, 18 K gold F nib – Sailor Sei-boku 青墨

Bruno Taut
May 31th, 2012
etiquetas: soluciones técnicas, plumín, Yamada