Stretch Vacumatic patent

By geoff Published March 14, 2020 Denmark, Miller, Patent, Stretch vacumatic, Tutorials

Johannes Iversen patented the “Stretch Vacumatic” filling system for fountain pens in 1939 in the USA. I’ve made a posting that describes how to repair such a pen which can be seen here.

The diagram from the original patent is shown above – and the whole patent for the USA can be read here.