The Portland Pudgy safety dinghy is a self-rescue boat, even without the optional inflatable exposure canopy and other survival gear. With the exposure canopy, sea anchor, and sail kit, the Portland Pudgy is an unsinkable, dynamic lifeboat.
The âlead pencil,â containing no lead, was invented in 1564, a turning point in pencil history. Although civilizations were centuries away from making mechanical pencil history, the pencil invented in the sixteenth century advanced the writing instrument. Before 1564, artists mainly used stylus-like pencils. The history of the pencil owes a dept to the discovery of a graphite mine in Cumbria, England.
While these patents mark a great step forward in pencil history, the giant leap wouldnât occur until 1879. This is when Joseph Hoffmann invented the pushbutton clutch in New York City. First incorporated into the Eagle Automatic, a product of the Eagle Pencil Company, this represents the first true mechanical pencil.