Pencil sharpener

Details Pencil sharpener Pencil sharpener

1990-01-25

1990-10-30

Bray, W. Donald

Woodworking

Special-work machine

Pencil sharpening

144 287, 144246D, B43L 2300

Patent

active

049662082

ABSTRACT:
A pencil sharpener comprises a housing defining a pencil passage, roller means for supporting and conveying a pencil back or forth along the pencil passage, abrasive means driven to rotate around the leading end of the pencil and self-rotate to produce a sharp point on the pencil and a control circuit for automatically performing pencil insertion, pointing treatment to pencil and pencil retraction of this invention.

REFERENCES:
patent: 3595285 (1971-07-01), Rubsen
patent: 3776286 (1973-12-01), Blanck
patent: 4054164 (1977-10-01), Kose et al.

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