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The Development Of The Pencil
2017-07-06
The first stage
The birth of graphite: at this time, the graphite pencil stick is still in the original stage that can only be written;
In 1564, a black mineral, graphite, was found in a place called barrodale in England. Soon, some of the local shepherds found that they could draw marks on the sheep with graphite. Inspired by this, people cut the graphite into little pieces to write and draw. But the graphite strips are easy to smudge and break easily. In 1761, the German chemical faber solved the problem: he first ground the graphite ore into a powder, then washed it away with water to obtain pure graphite powder. Then he added sulfur, antimony, and rosin to the graphite powder; The mixture is then heated and solidified and pressed into the shape of a pen, which is the earliest prototype of a pencil.
The second stage
The birth of the wooden pen pole: after a century of development, the "pencil" entered the initial stage of its own evolution, the emergence of wooden pencil poles
The pencil
The pencil
For the semi-finished product of "pencil", the market is mainly for such a pencil bar, and the user needs to be cut again to use;
In today's eyes, the "pencil" of conde's invention is actually a pencil lead. The task of putting a wooden pole on a pencil core was done in 1812 by a carpenter named William Monroe. Monroe invented a machine that can cut strips of fine wood between 5 and 18 centimeters long, and cut a groove that fits the lead in the middle of the thin wood. Put the pencil core into the slot and then tighten and glue the two pieces of wood, which makes the first modern pencil stick. To this day, this is still the standard procedure for making ordinary strokes.
The third stage
Born with caps pencil: along with the use of pencil, traditional pencil rod also exposed a series of problem, has brought people a lot of trouble, for example: don't use health, pen is easy to break, it is not easy to carry, etc., give the pencil to the development of industry has brought new challenges, but with the emergence of cap pencil has solve encountered on the product innovation of the modern pencil industry development bottleneck.
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