Lead loading mechanical pencil

Details Lead loading mechanical pencil Lead loading mechanical pencil

1981-09-14

1987-04-21

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 57, 401 65, 401 89, 401 90, B43K 2100, B43K 2104, B43K 2122

Patent

active

046592423

ABSTRACT:
A mechanical pencil having an exchangeable lead storing container has a feeding mechanism provided at one end with a coupling pin which snugly fits a coupling recess formed in the storing cartridge. The feeding opening connecting the interior of the cartridge with the central passage in the coupling pin has normally a smaller diameter than that of leads stored in the cartridge, and only upon completing the coupling the pin enlarges the feeding opening to such an extent that the stored leads can freely pass one after the other into the feeding mechanism of the pencil.

REFERENCES:
patent: 2053892 (1936-09-01), Beck
patent: 2370250 (1945-02-01), Kupczyk
patent: 2563551 (1951-08-01), Refsdal
patent: 3306493 (1967-02-01), Szajna
patent: 4247215 (1981-01-01), Leuthold et al.

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