Knock-out type automatic pencil

Details Knock-out type automatic pencil Knock-out type automatic pencil

1979-03-21

1981-02-17

Michell, Robert W.

Coating implements with material supply

Solid material for rubbing contact or support therefor

With means for severing portion of sheath or for shaping tool

401 65, B43K 2906

Patent

active

042511631

ABSTRACT:
Knock-out type automatic pencil comprises an outer barrel, an inner tube of plastic material molded integrally with a clamp and a head, a stopper collar inside the front end of outer barrel which retains the inner tube, a press device at the rear end of the outer barrel having lead sharpening and erasing means provided. The clamp at the front end of inner tube is formed in a closed type with slots on it instead of the conventional claw type.

REFERENCES:
patent: 1848224 (1932-03-01), Schmid
patent: 2358091 (1944-09-01), Lovejoy
patent: 2823644 (1958-02-01), Van Den Bussche et al.
patent: 3813175 (1974-05-01), Katz
patent: 3922098 (1975-11-01), Katz
patent: 3945733 (1976-03-01), Edel

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