Difference between revisions of "Auto-Advance mechanism"

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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 classical way.
 
Most of the time these pencils are also provided with a push button mechanism, and can be used in the classical way.
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[[File:Auto-Advance-Only pencils.JPG|thumb|right|Examples of auto-advance pencils that are not provided with a push button mechanism. Top to bottom: a Papermate Advancer, a Fila Temagraph Automatic, and a M&G Comrade]]
  
 
== Auto-advance pencil models ==
 
== Auto-advance pencil models ==
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|-
 
|-
 
| Pilot || Automac || [[Double-Knock mechanism|Double-knock mechanism]]; metal body
 
| Pilot || Automac || [[Double-Knock mechanism|Double-knock mechanism]]; metal body
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|-
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| Papermate || Auto Advance ||
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|-
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| Papermate || Advancer || Auto-advancement only; disposable pencil (not refillable)
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|-
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| Fila || Temagraph Automatic || Auto-advancement only
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|-
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| M&G || Comrade || Auto-advancement only; side button to retract the lead
 
|}
 
|}
  
 
[[Category:Pencils]]
 
[[Category:Pencils]]
 
[[Category:Mechanical Pencils]]
 
[[Category:Mechanical Pencils]]

Revision as of 11:24, 31 July 2018

Some auto-advance pencils. Left to right: two different models of Faber-Castell Grip Matic, a Faber-Castell Poly Matic, a BIC AI, and two Maped Automatic (0.5mm and 0.7mm)

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.

Examples of auto-advance pencils that are not provided with a push button mechanism. Top to bottom: a Papermate Advancer, a Fila Temagraph Automatic, and a M&G Comrade

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
Papermate Auto Advance
Papermate Advancer Auto-advancement only; disposable pencil (not refillable)
Fila Temagraph Automatic Auto-advancement only
M&G Comrade Auto-advancement only; side button to retract the lead