Carpenter's pencil sharpener

Details Carpenter's pencil sharpener Carpenter's pencil sharpener

1990-12-14

1992-01-07

Watts, Douglas D.

Cutlery

Static pencil sharpener

30453, 144 281, B43L 2300, B43L 2302, B43L 2306

Patent

active

050779036

ABSTRACT:
A carpenter's pencil sharpener for use in sharpening rectangularly shaped carpenter's pencils is disclosed wherein at the top of the housing the pencil sharpener is situated two rectangularly shaped openings juxtaposed to each other, the first a longitudinal opening and the second a transverse opening. Immediately below each of the pencil openings are a pair of oppositely driven rotary cutter assemblies. Each rotary cutter assembly is stepped, having a large diameter cylindrical cutting head mounted upon a shaft with a small diameter cylindrical cutting head juxtaposed to it, both on the same shaft. The two large diameter cutting heads receive the long side of the carpenter's pencil through the longitudinal opening to fashion an elongated point upon the pencil. The two small diameter cylindrical cutting heads receive the short sides of the carpenter's pencil through the transverse opening to chamfer the short sides. By interconnecting gears, an electrical motor rotates the rotary cutter assemblies.

REFERENCES:
patent: 673770 (1901-05-01), Fortunati
patent: 1160091 (1915-11-01), Stewart
patent: 1202325 (1916-10-01), Simmons
patent: 1333740 (1920-03-01), Steinman
patent: 2853053 (1958-09-01), Hamilton
patent: 3965949 (1976-06-01), Aston et al.
patent: 3980113 (1976-09-01), Birdshall
patent: 4402354 (1983-09-01), Halpern
patent: 4759129 (1988-07-01), Alpha
patent: 4918816 (1990-04-01), Alpha
patent: 4961451 (1990-10-01), Bucci

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