Invention Fountain Pen Head Construction
An invention fountain pen is basically a writing tool that utilizes a ball-shaped metal nib to write on paper without the assistance of an inkwell. Unlike earlier pen-like writing instruments, it has an internal reservoir for holding ink, thereby eliminating the necessity to repeatedly dip the nib in an inkwell. However, these devices do not have ink-pans, ink-jars or any other internal mechanism that allows the user to feed ink into the reservoir. Instead, the user must purchase or make his own ink, which is often made at home with special equipment.
There are three main types of fountain pens, namely, the mechanical, plastic and utility model. A mechanical pen has a tubular body and a cap on top. A plastic pen is made up of a cone-like cap with two or more little domes that rest atop the cone. The third type, the utility model, is similar to a fountain brush in that it has a flat top that pushes up against the reservoir and forms the reservoir tip.
The design of most modern inventions is such that the entire pen item is considered to be a one-piece unit, which means that the reservoir, the nib, the cap and the piston are all considered to form a single unit called the penhead. Two types of pen head construction are used in these devices. One type has a pre-domed cone shaped top, while the other type has a post mounted base and the top of the device is capped with a piston or block. The purpose of these two different types of head construction is to reduce the slop that is often experienced with the earlier type of pen items. In addition, modern devices also differ in the way they grip the paper, as well as in the way they force the nib into the paper.