Writing-core feeding mechanisms

Full Title

Propelling pencils > Writing-core feeding mechanisms

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES

Subclass:

IMPLEMENTS FOR WRITING OR DRAWING

Child Classifications

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• B43K 21/027 with sliding tube-like writing-core guide
• B43K 21/04 with the writing-cores brought into position by gravity
• B43K 21/06 with the writing-cores fed by means sliding in longitudinally-slotted casings
• B43K 21/08 with the writing-cores fed by screws
• B43K 21/16 with stepwise feed of writing-cores
• B43K 21/22 Writing-cores gripping means, e.g. chucks