Lead-auto-sharpened propelling pencil and the making process the

Details Lead-auto-sharpened propelling pencil and the making process the Lead-auto-sharpened propelling pencil and the making process the

1992-01-03

1993-04-27

DeMille, Danton D.

Coating implements with material supply

Solid material for rubbing contact or support therefor

With means for severing portion of sheath or for shaping tool

144 2811, 30454, 30457, B43K 2906, B43L 2300

Patent

active

052056643

ABSTRACT:
The present invention provides a lead-auto-sharpened propelling pencil and a process of making it. The propelling pencil comprises a pencil body and a pencil cap. The pencil cap consists of a sharpener, a screwing insert and a powder remover. The process of sharpening the lead is automatically provided while the pencil cap is twisted onto the pencil body. The lead powder from sharpening is gathered in the powder remover so that the environment can be protected. The manufacturing process of the invention is that the cap case is moulded by the means of a cap case jig with the screwing insert and the sharpener installed by the means of a tapered jig. The manufacturing process according to the invention has broad application and is very practical.

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