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Before mechanical pencil sharpeners, pencils were sharpened by whittling the wood back with a pocketknife to expose fresh pencil lead. This took practice and skill to do properly. Pencils sharpened by hand this way often looked a little "ragged".
The mechanical pencil sharpener was invented to simplify sharpening of pencils and produce a more reproducible result without needing endless practice.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoTo sharpen pencils quickly, neatly and to the same extent each time.
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How did john lee love invented a pencil sharpener?
Thats what i want to know
Is a pencil sharpener a kind of pulley?
No, a pencil sharpener is not any kind of pulley.
What type of simple machine is a pencil-sharpener?
A pencil sharpener is an example of a simple machine known as a wedge. The blade inside the sharpener is shaped like a wedge, which helps to cut and shape the pencil tip when it is inserted and rotated.
Does a pencil sharpener have a pulley?
no
WHAT did the pencil say to the pencil sharpener?
lets come to the point
Who is bernard lassimone?
He invented the first pencil sharpener
When was the first electric pencil sharpener invented?
Bernard Lassimone, a French mathematician, invented the standard manual pencil sharpener in 1828. In 1847, Therry des Estwaux invented an improved mechanical sharpener.
Who invented the electrical pencil sharpener?
world's first electric pencil sharpener designed by Raymond Loewy
When was the pencil sharpener invented?
1828
When was the electric sharpener invented?
Raymond Lowery invented the electric pencil sharpener in the early 1940's. In an electrical pencil sharpener, the cylindrical cutter is rotated by an electric motor.
When was the Panasonic pencil sharpener invented?
The first electric one was the KP110 and it came in 1973
When was the first pencil sharpener made?
http://www.officemuseum.com/pencil_sharpeners.htm you smell only joking
What device did JL Love invent that you might have in your classroom?
J.L. Love invented the first portable pencil sharpener.
What year was his invention the pencil sharpener invented?
1828, Google says
Who invited the first pencil sharpener?
Ajith
What African American invented the pencil sharpener in 1897?
john lee love
How did john lee love invented a pencil sharpener?
Thats what i want to know
