Mechanical pencil

Details Mechanical pencil Mechanical pencil

2005-09-13

2005-09-13

Walczak, David J. (Department: 3751)

Coating implements with material supply

Solid material for rubbing contact or support therefor

With means for severing portion of sheath or for shaping tool

C401S088000

Reexamination Certificate

active

06942410

ABSTRACT:
A mechanical carpenter's pencil having an integral sharpening guide providing a reference surface to which the lead may be trimmed for sharpening. The pencil user may use a knife to trim the lead flush with the sharpening guide surface or may abrade the lead on a convenient surface until the lead is flush with the sharpening guide surface. After trimming, the lead is advanced to expose the freshly sharpened point and is ready for precision marking.

REFERENCES:
patent: 193545 (1877-07-01), Park
patent: 336250 (1886-02-01), Meigs
patent: 502632 (1893-08-01), Norell
patent: 831480 (1906-09-01), Searle
patent: 1125060 (1915-01-01), Cera
patent: 2378973 (1945-06-01), Borsodi

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