1828
J.L. Love invented the first portable pencil sharpener.
the basic Boston pencil sharpeners are really very simple you have a pretty much simple ring and pinion system the pinion (motor)spins at 15 revolutions to 1 revolution of the ring (sharpener) to turn said sharpener
what is a qualitative example of a pencil
A pencil or pen
coal+wood=pencil
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.
Bernard Lassimone, a French mathematician, invented the standard manual pencil sharpener in 1828. In 1847, Therry des Estwaux invented an improved mechanical sharpener.
world's first electric pencil sharpener designed by Raymond Loewy
1828, Google says
john lee love
Un sacapuntas is a pencil sharpener
a sharpener is a Georgina and a pencil is a peens so wen a pencil gos in to a sharpener it is a peens going into a Georgina
The first electric one was the KP110 and it came in 1973
To make sharpening pencils easier. He invented the sharpener to minimize the use of knives for sharpening pencils
Translation: ¿Puedes usar el sacapuntas? = Can you use the pencil-sharpener? Puedo usar el sacapuntas? = Can I use the pencil-sharpener? Se puede usar el sacapuntas = Can you ('one') use the pencil-sharpener?
You would use a pencil sharpener to sharpen a pencil.
No, a pencil sharpener is not a screw. A pencil sharpener is a tool used to sharpen pencils by removing the wooden casing to expose the graphite core.