FIELD: printing industry.
SUBSTANCE: automatic pencil has a frame which is placed longitudinally along axis X between writing end and tail piece, tip which is placed on the level of the front end, lead guide which is retracted in the tip and has a channel for lead passing and directing its forward movement along axis X and lead brake which is made of elastic collapsible elastomer or resin elastic and attached with the lead guide. The lead brake contains at least one friction zone (F') ''lead-lead brake'' which limits movement of the lead in the lead guide and at least one friction zone (F) ''tip-lead brake'' which limits movement of the lead guide in the tip. Each friction zone (F) ''lead-lead brake'' is shifted in angular direction around longitudinal axis X towards each friction zone (F') ''tip-lead brake''.
EFFECT: simplification of automatic pencil production.
10 cl, 9 dwg
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|---|---|---|---|
| WRITING APPLIANCE | 0 |
|
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|
RU2429181C2 |
| 0 |
|
SU236280A1 |
