Taking Apart The Heritage 1912?

[thygreyt]

After looking at the pen for some time, and hating every time i have to clean it up i decided i HAD to find a way to service it myself.

 

The only tool marks for the pen are found on the end cap which is where the entire pen operation happens.

The only tool you need to remove the cap is a set of Snap Ring pliers. The fit perfectly.

 

The second tool you'd need to remove the piston mechanism is one i dont yet have but i'm looking to having it made, see a picture below.

 

 

Its basically, the same tool to remove nibs from the 149 or 146 but a part (signaled) has to be longer.

Which BTW, if anyone knows where to have it made, let me know.

 

Anyhow, the pictures of the pen.

 

This is how it looks once you remove the cap/mechanism

 

The stick that sticks out is for the piston mechanism. Inside (I couldnt picture it) there is a mechanism that controls the nib retraction.

 

Once the nib is out, the piston is further inside

 

Rotating this "stick" moves the piston

 

 

And finally: The cap.

Once its out its much easier to understand how it works.

Fairly simple! Brilliant!

 

 

I'll probably make some drawings of the inside and overall operation. Dont expect anything to perfect scale... its just for me (and you) to have an idea of the pens workings.

[thygreyt]

Drawing one, overview.

 

 

Drawing 2: Insides

 

 

 

Annotated Photo

 

[kandarp]

Very cool. Thanks for sharing.

 

Is the nib retraction mechanism similar to the Boheme?

[dubhe]

Thank you for this, it answers many questions! Good luck with finding the piston tool you need.

[thygreyt]

Actually I have been playing with the pen and taking it apart, taking more pictures, etc.

 

I was mistaken!!!!

 

The pen actually has a captive converter, not a full Piston unit. I'll make new drawings tomorrow.

 

It's simpler.

[meiers]

A captive converter.... who would have thought!!! I am all ears.

 

This explains the ink capacity of the Heritage 1912.

Edited December 19, 2018 by meiers

[thygreyt]

I'll make drawings tomorrow. But it seems the nib takes about a third of the pen, the mechanism for the nib about another third, and the top of the converter the last third.

 

Link to pictures and a short video

https://photos.app.goo.gl/FPFC3R8DDSjhaCbm7

[Pravda]

Considering it's my favorite pen of all time, the fact that I had to disassemble pens in the past (for tweaks/repairs not curiosity), this post is brilliant to come across. Thank you so much for sharing Now I know what it's like inside as to be honest this particular pen has been enigmatic to me.

[beboy]

Do you guys have noticed the corrosion of the brass components inside the cap or it is an isolated issue with my 1912?

[siamackz]

What a fantastic effort - thank you, I was always wondering how I would ever service my 1912!!

[jhsd1124013561]

Thank you so much for the effort!

[16m3mx]

This is awesome Reed, thanks a lot fot making this mini-tutorial.

 

Luis A.

[Tom Kellie]

After looking at the pen for some time, and hating every time i have to clean it up i decided i HAD to find a way to service it myself.

 

I'll probably make some drawings of the inside and overall operation. Dont expect anything to perfect scale... its just for me (and you) to have an idea of the pens workings.

 

 

~ Reed_thoughts:

 

Although I don't write with a Heritage 1912, nor do I perform any needed maintenance on my pens, I have great regard for your pen photography.

What a welcome surprise to find such excellent drawings of the mechanism.

I'm interested in the sketches for their artistic quality rather than for any utility. You capture the essence with such supple lines.

Thank you so much for posting these images. I hope that they'll be useful to Heritage 1912 owners.

Tom K.

Edited December 19, 2018 by Tom Kellie

[nishantdr83]

I do not think I would ever have the courage to take apart an expensive pen like this. I must confess, however, that I did take apart my Skeleton 333 after receiving it so that I can stop internal leakage and get it working again. It was a touch scary but a successful effort in the end ;-)

[desidude02]

This is freaking super cool. Love the anatomy MB lessons. Thank you for sharing.

 

Hope you will continue to educate us.

[thygreyt]

The promised new drawings:

 

This is the overall schematic of the pen. The LENGTH was drawn to be as close to real as possible (and when known), and the WIDTH was exagerated for ease of drawing.

 

Its a very simple pen now that i understand it. Its a retractable nib with a captive converter. The movement of the rear finial selects engagement with either the nib retraction or the converter, based on watch tech.

 

The nib+feed take a lot of the space, and the coverter was employed for its simpler to move than a reservoir of ink that used the walls...

 

 

 

For illustration: Nib's length is the same on page as is on real life, but drwing is MUCH wider. (even the threads match up!)

 

The pen next to the drawing

 

 

On this i was wholly correct:

 

 

 

 

 

PS: All the drawings were made with the 1912 with an OB nib inked on Blue Hour. I love the versatility of the nib, the thin lines for the "precise" drawings, and nice bold variation when writing.

Edited December 20, 2018 by Reed_thoughts

[luckduck369]

Thanks for all the effort! This is impressive!

 

I have seen a picture of the Chinese Hero version of the 1912 that uses a converter instead of a true piston. People are speculating that the 1912 also uses a converter. I guess it's confirmed by now

 

I attach a picture of the Here pen taken apart here. Hope it's helpful. (Source: see here)

 

Edited December 21, 2018 by luckduck369