1 reply to this topic

[david i]

We're familiar with Wahl's ink shut-off system of mid-late 1930's, which apparently did not work so well and which-- iirc-- Wahl was forced to discontinue.

Who knew Sheaffer was playing with similar?

I certainly hadn't known.

Here is a patent for such a beast, courtesy of FPB'er MacKozinsky.

http://www.google.co...epage&q&f=false

I'll grab/add pics, but will be a bit, as I am catching up on other business.

regards

david

[MacKozinsky]

There was another one also

(...)to provide simple and efficient means for effectively sealing the writing fluid against leakage when the cap is in place and the pen not in use(...)

:
May 1936