Mechanical pencil

Details Mechanical pencil Mechanical pencil

1978-05-30

1981-01-27

Coven, Edward M.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401134, B43K 2116

Patent

active

042472156

ABSTRACT:
A mechanical pencil of the type having a pushbutton lead-feeding mechanism is provided with a space into which a replaceable cartridge containing leads can be inserted. The cartridge has a lead outlet opening which is blocked by a closure that is moved out of the way upon such insertion so that the leads can thereupon move sequentially into the lead-feeding mechanism, permitting a user to write until all leads in the cartridge are used up.

REFERENCES:
patent: 1866072 (1932-07-01), Woelm
patent: 2049208 (1936-07-01), Leistenschneider
patent: 2053892 (1936-09-01), Beck
patent: 2130230 (1938-09-01), Cohen
patent: 2222824 (1940-11-01), Rossier
patent: 2243109 (1941-05-01), Lynn
patent: 2311906 (1943-02-01), Leistenschneider
patent: 2525229 (1950-10-01), Lynn
patent: 2802448 (1957-08-01), Young
patent: 3072101 (1963-01-01), Kovacs
patent: 3813175 (1974-05-01), Katz

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