Infographic | Pencil day

Diseños Industriales | Infografías | Patentes | Propiedad Industrial

29 marzo, 2024

The history of the pencil begins with the discovery of graphite in England.

The material was highly appreciated for writing as it left a darker mark than than lead, but as the mineral was so soft and brittle, it also needed a holder, reason why the first pencils were graphite sticks wrapped in string or sheepskin.

The pencil continue to evolve into the method of two wooden parts glued together with a graphite center, which is the method we still use today.

When the French stopped having access to pure graphite during the Napoleonic War.

The scientist Nicholas Jacques Conte mixed finely groud graphite with clay and water in a kiln at very high temperatures.

Leading to a solid that was then encased in a wooden cover.

The pencil has continue evolving into different and more modern versions.

Changing the temprature would affect the hardness of the pencil, and is the method still used today to vary the Hs and Bs in pencils, which mean “Hard” and “Black”.

The pencil has continue evolving into different and more modern versions, including technological and digital pencils. Today we would like to celebrate pencils sharing a couple of patents:

MULTIPLE-POINT WRITING INSTRUMENT INCLUDING A MECHANICAL PENCIL UNIT

US4202641A- USA

Inventor:
Yoshihiro Tomura

Current Assignee:
Pilot Corp

Date of Patent:
May. 13th, 1980

This is a special pen and pencil holder. It has two parts that can turn in opposite directions. Inside, there’s a cradle that holds the pen and pencil. The pen and pencil can slide up and down separately. When you turn the top part of the holder, it makes the pen or pencil come out for writing. There’s also a button that helps to push the pencil part out when you want to use it.

ELECTROMAGNETIC STYLUS

CN201965567U- CHINA

Inventor:
周佳李东梅

Current Assignee:
Beijing Eren Eben Information Technology Co Ltd

Date of Patent:
Sep. 07th, 2011

This is a special pen that works with electronic devices. It has a shell, a cap, a button, and two modules inside: one for electronic writing and one for writing on paper. The cap also has an eraser. You can use the electronic module to write on a screen and the paper module to write on paper. You can even erase what you wrote on the screen directly with the eraser. Plus, there’s a button to change the color and thickness of what you write electronically.

Our Expert