Eyedropper That Doesn't Burp

[watch_art]

Today I decided that I would fix my amazing Guider Jumbo so that it does not burp ink when it gets low. I put a sac in it.

 

I cut the back of the feed so it was about 3/16 of an inch shorter, and put a sac on the inside of the end of the section. It's a big long #20 sac, so it takes a few squeezes to get it nice and filled.

 

But I thought I would share.

 

 

 

Edited July 10, 2011 by watch_art

[Pickwick]

A good idea, what adhesive did you use to fix the sac to the feed?

[watch_art]

shellac.

 

oh, and the sac is fitted to the inside of the section, not the feed.

Edited July 10, 2011 by watch_art

[tmenyc]

nice job, Shawn! How did you know the sac was smooth and airtight against the inside of the section and not crimped? How do you fill it? squeeze and release?

 

Tim

[rwilsonedn]

Nice work! This may not necessarily prevent burping, however. Piston-fillers, bulb-fillers, and even pens with sacs can burp too--it's a question of how much ink gets expelled from the pen when outside pressure and temperature change, versus how much capacity the collector (if there is one) and feed have to absorb ink. The sac should help in one regard. By reducing the volume of the ink-storage chamber, you reduce the amount of air that can accumulate in there to expand and force ink out. I notice that some Indian pens have things stuffed into the barrel to reduce the volume, apparently for just this reason. But you also have created a flexible chamber that can be compressed by increasing atmospheric pressure. So you may now have a pen that is relatively insensitive to heat from you hand when nearly empty, but that burps when the barometer rises. It will be fascinating to hear your experiences with this one!

ron

[watch_art]

I knocked the nib and feed out, and was able to make sure it fit snug on the inside of the section by looking through the section. The sac is clear so light passed through and made this really easy to check.

 

 

@Ron...

 

Hmm... Good points. I did it b/c I thought it wouldn't be affected by heat from my hand. I didn't think of the other issues. I'll definitely report back.

 

I also put a sac on the end of a Sheaffer cart so I can refill my cute little viewpoint from a bottle.

Edited July 10, 2011 by watch_art

[Pippin60]

OK, honestly now I'm not being sarcastic when I ask the question; isn't it no longer an eye dropper pen?

[FrankB]

I have been using FP's for over 50 years, but I am little more than a long term novice so that allows me to ask naive questions. Do eyedropper fillers burp when they are low on ink? I have never had that happen. Might that be a trait of the particular pen model you are using?

[watch_art]

No, it's no longer an eyedropper.

 

And some of them burp. At least the ones with these type of ebonite feeds, do. This one especially. Actually, of all my e/d pens, this one specifically.

Hmm... I wonder if this will actually help cure that. Oh well, it is easier to fill now.

[humblescribbler]

Thanks for posting this. Even those of us who would NEVER attempt this with their pens (me!) learn so much more about the craft, art and mechanics of FPs by reading those that are gifted with such skills.

[jar]

A few suggestions.

 

If you now put a slot in the body you could use a coin to depress the sac to fill it. And then you could add a lever in the slot to make it even easier.

 

Maybe you are on to something.

[watch_art]

aaaaah gimme a break.

[Brian C]

A few suggestions. If you now put a slot in the body you could use a coin to depress the sac to fill it. And then you could add a lever in the slot to make it even easier. Maybe you are on to something.

The worlds largest Mark Twain! You could can call it "The Steamboat"!

[tonybelding]

A few suggestions.

 

If you now put a slot in the body you could use a coin to depress the sac to fill it. And then you could add a lever in the slot to make it even easier.

 

Maybe you are on to something.

 

I was actually thinking, now it only needs a hole in the tail, and it can be a blow-filler.

[watch_art]

I'd be more apt to make it a blow filler than cut a slit in it. I really like this pen but the way it burps ink has kept me from enjoying it. I actually don't care at all for levers on lever fillers. Except for the black lever on those swan pens. Dang those are nice.

 

I really like the idea of a blow filler. I think I'll do that.

 

Cheers!

[RLTodd]

I have been using FP's for over 50 years, but I am little more than a long term novice so that allows me to ask naive questions. Do eyedropper fillers burp when they are low on ink? I have never had that happen. Might that be a trait of the particular pen model you are using?

 

Mine do, but I have hot hands and a bad habit of not pausing occasional with the nib up to allow the pressure to equalize. I am a very bad candidate for an ED fountain pen.

 

For me, the ink insulation feature of a C/C filler is a perfect fit. I really get good service out of the Lamy Safari with the slots on the sides.

[FarmBoy]

aaaaah gimme a break.

OK I'll let you use your free pass.

 

If you need one I could scare up a lever.

[tmenyc]

I'd be more apt to make it a blow filler than cut a slit in it. I really like this pen but the way it burps ink has kept me from enjoying it. I actually don't care at all for levers on lever fillers. Except for the black lever on those swan pens. Dang those are nice.

 

I really like the idea of a blow filler. I think I'll do that.

 

Cheers!

fill it with BSB and make it a blowgun...now that's a blurp!

Tim

[watch_art]

:roflmho:

[jar]

I'd be more apt to make it a blow filler than cut a slit in it. I really like this pen but the way it burps ink has kept me from enjoying it. I actually don't care at all for levers on lever fillers. Except for the black lever on those swan pens. Dang those are nice.

 

I really like the idea of a blow filler. I think I'll do that.

 

Cheers!

 

The blow filler is a good option, and when you get older and short winded, consider putting a sealed sleeve between the body and the sac that could be pulled out and then pushed in quickly to compress the sac. Place a small air hole in the body just above where the bottom seal on your sleeve will rest when fully inserted and it will then let air out to expand the sac.