Ref. : 741 905
Production Date : Late 1970’s / Early 1980’s to circa 1994
There’s an old drafter’s trick for starting tubular point pens after a night of a few days. First you shake it well back and forth, then you place it between your lips ands you suck up the nibs to remove any dry ink. Of course you ended up with black tooth and tongue ( I would not recommend doing it with nibs larger than 0,3 because the ink flow is way too important and you really drink ink… which taste disgusting I can confirm 🙂
To remedy this situation Rotring came up with this little accessory they have the secret of. Basically it’s a pump. The soft plastic red part is toped by a special nozzle. You just have to place the end of your nib in the nozzle and pump up the thing to make it work. But wait, there ’s more… It also have a double action. If you remove the transparent nozzle, you can use it to push out the ink from your pen and clean it. Rotring recommend to clean it in water or with their special cleaning fluids.
I don’t have the retail box for this one, but was fortunate enough to have the instruction sheet, considering I saw it only once for sale (and grab it, of course). I have trouble dating this product. It only appears in two of my catalogs (1990 and 1994 – German edition), but the Rotring logo printed on the instruction sheets if the version that was dropped after 1981, so this item was clearly produced before 1981. I’ve added the page of the 1994 German catalog dipsplaying the Pressure Bulb at the end of this post.
The most amazing thing is that there’s even a video where you can see the pressure bulb in action. It’s the Koo-I-Noor version, but as the intro of the video clearly shows, it’s a Rotring product. Here’s the link for the video: