Mechanical pencil

Details Mechanical pencil Mechanical pencil

1976-04-05

1977-11-01

Pellegrino, Stephen C.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 82, 401 93, 401 6, 401 34, B43K 2116, B43K 2100

Patent

active

040563251

ABSTRACT:
In a push-out type pencil, the lead thereof is extensible by longitudinally sliding the front portion of the pencil relative to the middle portion of the same, said sliding operation being effected in the writing position of hand by retracting said front portion between the extremities of the index and middle fingers to said middle portion clipped fast between the bases of the thumb and index finger adjacent to the web of hand and held stationary against the retracting movement of said front portion.

REFERENCES:
patent: 1062274 (1913-05-01), Fischer
patent: 1395793 (1921-11-01), Broschart
patent: 1716354 (1929-06-01), Nelson
patent: 2385442 (1945-09-01), Hoffman
patent: 2645204 (1953-07-01), Bross
patent: 3883253 (1975-05-01), Naruse

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