Bridges
Patent
1976-02-19
1978-03-28
Jones, Jr., James L.
Bridges
145 33, 145 361, B43L 2300
Patent
active
040810100
ABSTRACT:
A pencil sharpener for non-circular section pencils comprising a first tubular element for receiving the pencil without permitting the sliding or rotation of the latter relatively to the former. The sharpener is fitted with cams near the top end thereof, a second tubular element with a reduced tubular extension at one end thereof forms a stop for the first element, with a communicating hole between the second element and the extension shaped as a cam, carrying the cutting blade of the sharpener. The second element has at the other end a closing disk fitted with an abutment on the inner side and a cam-like profile hole similar to the communication hole between the second element and the extension. The holes are designed to receive a third pair of cams at the end of the first element. The second element has at least one fixed striker and at least one elastic striker interacting respectively with the first pair and second pair of cams of the first element resulting when the first element is rotated around the second one in a composed rotating motion of the pencil around its own axis along a closed-ring path so that the side surface of the pencil in contact with the cutting blade will constantly remain in contact therewith.
REFERENCES:
patent: 2525854 (1950-10-01), Becker
patent: 2857884 (1958-10-01), Itano
Adams Bruce L.
Burns Robert E.
Fabrica Italiana Lapis ed Affini (Fila) SpA
Jones Jr. James L.
Lobato Emmanuel J.
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