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In 1802, the company patented the first pencil lead made from a combination of kaolin and graphite. In 1848, Joseph's sons, Karl and Ludwig, took over the family business, and the production was relocated to the Bohemian city of Budweis (České Budějovice, within the current Czech Republic). The products were given awards in many world ...
Grease pencils on plastic slates were used both by NASA and the Soviet space program as an early substitute for wood-cased graphite pencils. A grease pencil is simple with no moving parts, and the paper shroud is peeled back when needed. The disadvantage is that the paper wrapper requires disposal.
A pencil is a handheld instrument containing an interior strip of solid material that produces marks used to write and draw, usually on paper. The marking material is most commonly graphite, typically contained inside a wooden sheath. However, other marking materials are used, such as charcoal or cosmetics (as in an eyebrow pencil
Invented by Harold Grossman [53] for the Empire Pencil Company in 1967, plastic pencils were subsequently improved upon by Arthur D. Little for Empire from 1969 through the early 1970s; the plastic pencil was commercialised by Empire as the "EPCON" Pencil. These pencils were co-extruded, extruding a plasticised graphite mix within a wood ...
A typical construction of a ratchet-based mechanical pencil. A mechanical pencil or clutch pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" / ˈ l ɛ d /. The lead, often made of graphite, is not bonded to the outer casing, and the user can mechanically extend it as its point is worn away from ...
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