Pencil Sharpener by Andrew https://padlet.com/apellegrino/pencilsharpener Everything you need to know about the history of the pencil sharpener en-us 2013-08-07 00:41:18 UTC 2017-05-17 01:33:28 UTC hello@padlet.com http://ak-main-blog.andrewkelsalldes.netdna-cdn.com/wp-content/uploads/2010/02/metal-pencil-sharpener-468x351.jpg Wikipedia - Pencil Sharpner apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11587783 2013-08-07 23:54:29 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11587783 Swingline - Pencil Sharpener apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11588314 2013-08-08 00:07:07 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11588314 Before Pencil Sharpeners apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11642295 Before pencil sharpeners were made they would use a knife to sharpen the pencil, this was called whittling.

]]> 2013-08-12 00:25:22 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11642295 Applying for a patent apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11642408 The first person to apply for a patent on the pencil sharpener as french mathematician Eiche Gardner in 1828. But it was patented in 1847 by a fellow frenchman Therry Des Estwaux.

]]> 2013-08-12 00:28:39 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11642408 The Inventor  hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/11642766 The first person to invent and make the pencil sharpener was Bernard Lassimone. He invented it in 1828 but it wasn't a lot quicker than whittling, because it was just blades on an angle in a piece of wood.

]]> 2013-08-12 00:38:25 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11642766 Crank Shapener apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11650593 2013-08-12 09:48:49 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11650593 Electric Shapener apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11650605 The electrical sharpener was first made in 1910 by a man named Samuel Forrester.

]]> 2013-08-12 09:51:11 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11650605 First Pencil Sharpener apellegrino https://padlet.com/apellegrino/pencilsharpener/wish/11650655 The very popular prism sharpener in its basic form.

]]> 2013-08-12 10:00:34 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11650655 The Prism Sharpener hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/11861971 In 1847 frenchman Therry Des Estwaux improved the first idea and made the prism sharpener which is used by turning the pencil in the eye of the sharpener. It is one of the most commonly used sharpeners today.

]]> 2013-08-20 00:15:34 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11861971 Prism Sharpener  hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/11862027 This is a classic metal prism sharpener that is the most common and used sharpener today.

]]> 2013-08-20 00:17:32 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11862027 Brisk Info - Pencil Sharpener  hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/11862187 2013-08-20 00:22:33 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11862187 Simple Machines  hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/11862774 The common sharpener, the prism sharpener is made of some simple machines. There are 6 simple machines, the wedge, the wheel, gear and axel are one, theres the inclined plane, the screw, the pulley and the lever. If there are two or more simple machines in an invention it makes a complex machine. The prism sharpener contains a wedge in the blade and an inclined plane so the pencil fits in the hole and does not break when you twist it and the pencil acts as a screw when you turn it. The prism sharpener is a complex machine because it contains more that two simple machines in this invention is it a complex machine

]]> 2013-08-20 00:45:46 UTC https://padlet.com/apellegrino/pencilsharpener/wish/11862774 hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/12025496 2013-08-23 03:04:06 UTC https://padlet.com/apellegrino/pencilsharpener/wish/12025496 Whittling your pencil  hingham2 https://padlet.com/apellegrino/pencilsharpener/wish/12025500 Watch how people used to sharpen thier pencil in the 1800

https://www.youtube.com/watch?v=IGtdKZfCQac

]]> 2013-08-23 03:04:20 UTC https://padlet.com/apellegrino/pencilsharpener/wish/12025500