It has been quite a while since I’ve restored a bulb filler. I’ve written about them several times before, because I find them quite impressive. There are two very similar designs, one by Mentmore the other by Langs. This one, I feel sure, is by Langs. It is identical in design to National Security pen which was certainly by Langs, and the pattern of the engine turning is the same as other Langs pens I’ve worked on.
Though this pen does not appear to have been used much it has had some rough handling. The breather tube had been snapped off. I removed the remaining part easily enough but the breather tube I have is too thick. A few moments with the Archimedes drill solved that problem. I had a suitable sac to use as the bulb and I found the right size of nib among my spares. A dab of silicone grease on the section threads eased reassembling and helped to seal it.
These pens are both admirably simple yet sophisticated in design. Like other ink-in-the-barrel pens, they take a good charge of ink and are easy to fill fully. When compared with Parker’s Vacumatic, these pens come out ahead because of their ease of maintenance.