Class 1 Lever

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

• Examples from Nguyen Duc Thang's YouTube Channel 2100 Animated Mechanical Mechanisms

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).

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DT Online Buyers' Guide

Simple Frames and Linkages can be explored using Construction Kits such as those listed below. More varied models can be constructed using the materials listed at Truss Bridge Models or Stripwood Technology Materials and tools described in Stripwood Technology Tools.

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