Difference between revisions of "Auto-Advance mechanism"
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(Created page with "File:Auto-Advance pencils.JPG|thumb|right|Some auto-advance pencils. Left to right: two different models of Faber-Castell Grip Matic, a Faber-Castell Poly Matic, a BIC AI, a...") |
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'''Auto-advance''' or '''auto-feed''' [[mechanical pencil|mechanical pencils]] don't need any action to advance the lead because of their particular mechanism: a spring loaded sliding sleeve (usually a plastic cone) pushes out more lead every time it is pressed and released from the paper. | '''Auto-advance''' or '''auto-feed''' [[mechanical pencil|mechanical pencils]] don't need any action to advance the lead because of their particular mechanism: a spring loaded sliding sleeve (usually a plastic cone) pushes out more lead every time it is pressed and released from the paper. | ||
In order to work, it is required to write with a very little amount of lead coming outside the tip, and practically to drag the lead sleeve on the paper. | In order to work, it is required to write with a very little amount of lead coming outside the tip, and practically to drag the lead sleeve on the paper. | ||
| − | Most of the time these pencils are also provided with a push button mechanism, and can be used in the | + | Most of the time these pencils are also provided with a push button mechanism, and can be used in the classical way. |
== Auto-advance pencil models == | == Auto-advance pencil models == | ||
Revision as of 10:48, 31 July 2018
Auto-advance or auto-feed mechanical pencils don't need any action to advance the lead because of their particular mechanism: a spring loaded sliding sleeve (usually a plastic cone) pushes out more lead every time it is pressed and released from the paper. In order to work, it is required to write with a very little amount of lead coming outside the tip, and practically to drag the lead sleeve on the paper. Most of the time these pencils are also provided with a push button mechanism, and can be used in the classical way.
Auto-advance pencil models
| Brand | Model name | Additional Features |
|---|---|---|
| Ohto | Auto Sharp | |
| Ohto | Horizon | Double-knock mechanism with side button to retract the tip; metal body |
| Faber-Castell | Grip Matic | |
| Faber-Castell | Poly Matic | Twist-extendable eraser |
| Maped | Automatic | |
| BIC | AI | Shaker mechanism with lead lock when the lead sleeve is retracted |
| Pilot | Automac | Double-knock mechanism; metal body |