Mechanisms: Push Pull Linkage
Click for large version of picture
If you want the output to move in the same direction as the input, then you would use the push-pull linkage.

This consists of levers connected with two fixed pivot points.

Copyright D&T Online 1997

Dial Solutions
Produced by Dial Solutions Ltd		 NAAIDT
in association with the NAAIDT		 Webulator
Build and host your own website with Webulator