Mechanical pencil sharpener pdf#

Mechanical pencil sharpener pdf#

Google Patents Pencil driven mechanical pencil sharpenerĭownload PDF Info Publication number US4231405A US4231405A US05/912,225 US91222578A US4231405A US 4231405 A US4231405 A US 4231405A US 91222578 A US91222578 A US 91222578A US 4231405 A US4231405 A US 4231405A Authority US United States Prior art keywords cutter assembly pencil rod coupling movement Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4231405A - Pencil driven mechanical pencil sharpener Techniques with particularly long lead points after whittling away the woodĬasing with a knife.US4231405A - Pencil driven mechanical pencil sharpener Classical artists often employ advance shading This is something you couldĪlso do with a pocket knife if skilled enough, but the Masterpiece makes the In hole #1 longer with the automatic stop removed.

The exposed tip isĪbout twice the length typically produced by the Automatic Brake model.Īn even longer point on your pencil can be accomplished by sharpening the pencil The second hole, you get a strong long point on your pencils. Of graphite lead exposed ready for hole #2. Once the first sharpening step is complete, you get a long cylindrical section Since you get two spare blades within theĪutomatic stop wedge, this sharpener should last a long while. Masterpiece's very high-carbon steel blade is reportedly sharper and moreĭurable than a kitchen knife. Unbroken spiraling cedar shaving sliced clean from a new pencil. Sharpeners is smaller in the Masterpiece.Ī blade in good condition and a quality pencil should yield a continuous The third difference is that the diameter of the second hole in these 2-step The second difference between these KUM sharpeners is that the automatic stop isĪ blue plastic piece that can slide off the metal body in the Masterpiece. This far into my review, it would appear you are the type of user that should Would be my theory that might begin to explain the difference in their retail The the Automatic Brake long point sharpener seems to be cast from a mold. Sharpener's body while the raised 'STOP' letters and recessed hole numbers of There is much more cutting and drilling involved in making the Masterpiece The striations across its machined magnesium block suggest to me that Magnesium-alloy block sharpener of the KUM Automatic Brake Long Point Sharpener.įor the first difference between them, notice that the round edge of the cuttingīlade number 1 is closer to the edge of the block in the Masterpiece versionĬompared to the Automatic Brake model where both blades are in the same parallel

Soft carrying pouch with a snap closure.Ĭrowning piece of a pencil sharpener collection that can yield the longest leadĪt first glance, the KUM Masterpiece appears virtually identical to the 2-hole.

Two spare blades stored in the blue plastic stopper.Strong and lightweight magnesium alloy body.Two-step sharpening mechanism for creating long, sharp points.The blue plastic stopper can be removed from the sharpener, allowing you to expose a longer segment of lead for shading, extended writing, or other advanced techniques. Then, carefully insert the pencil into the second hole and twist the pencil until the blade begins to shave off wood from the pencil. To use the sharpener, insert a pencil into the first hole and sharpen until the lead touches the blue plastic stopper and the pencil rotates freely without any more wood being shaved off. A blue plastic stopper on the end of the sharpener prevents pencils from being over-sharpened. The first hole shaves the wood and exposes the graphite lead core, which is then sharpened to a super-fine point by the second hole. Handmade in Germany, where it is also known as the 'Meisterwerk', this precision sharpener features a two-step sharpening process. Planner Stickers, Pens, Stamps, and MoreĬreate incredibly sharp and precise pencil points with the KUM Masterpiece handheld pencil sharpener.Japanese Stationery: What's the Big Deal?.The Difference Between Ballpoint, Gel, and Rollerball Pens.