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Difference between revisions of "Class 1 Lever"

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* Centre distances of the holes on the handle are equal.  
 
* Centre distances of the holes on the handle are equal.  
 
''(the red springs tend to move the jaws apart from each other)''.
 
''(the red springs tend to move the jaws apart from each other)''.
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Latest revision as of 14:51, 28 August 2016

MechanismsClass1Lever.jpg


Description

This is the most common type of lever. With a Class 1 Lever the fulcrum is in the middle, like a see-saw. The effort is on one side and the load is on the other.


Features and Uses

Common examples of Class 1 Levers include: a crowbar, scissors, pincers, tinsnips, many push-bike brake levers and calipers and balance type weighing scales.


Animations
Parallel Jaw Pliers - two back pins slide in the slots and to get parallel clamping surfaces of the jaws:
  • For each jaw, distances to clamping surface from center line of the slot and from center of the hole are equal.
  • Centre distances of the holes on the handle are equal.

(the red springs tend to move the jaws apart from each other).

DT Online Buyers' Guide
  • Simple Frames and Linkages can be explored using Construction Kits such as those listed below.


Click top left to enlarge

Viga Wooden Construction Set Straws and Connectors Construction Engineering Blocks K'Nex Education Group Set Engino STEM Construction Set Lego Duplo Tech Machines Set Lego Education Core Set Meccano Easy Construction Box Fischertechnik Universal Building Kit
Viga Wooden Construction Set Straws and Connectors Construction Engineering Blocks K'Nex Education Group Set Engino STEM Construction Set Lego Duplo Tech Machines Set Lego Education Core Set Meccano Easy Construction Box Fischertechnik Universal Building Kit