Class 1 Lever: Difference between revisions

Latest revision as of 13:51, 28 August 2016

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).

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.

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

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-[[File:MechanismsClass1Lever.jpg|200px|right]]
+[[File:MechanismsClass1Lever.jpg|300px|right]]
+__TOC__
+=====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 [https://en.wikipedia.org/wiki/Crowbar_%28tool%29 crowbar], [[scissors]], [https://en.wikipedia.org/wiki/Pincers_%28tool%29 pincers], [[tinsnips]], many [https://en.wikipedia.org/wiki/Bicycle_brake push-bike brake levers and calipers] and [https://en.wikipedia.org/wiki/Weighing_scale#Balance balance type weighing scales].
+=====Animations=====
+* Examples from '''[[2100 Animated Mechanical Mechanisms|Nguyen Duc Thang's]]''' YouTube Channel '''[[2100 Animated Mechanical Mechanisms]]'''
+{|
+|-
+| [https://youtu.be/TbdkXOo0z94 '''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)''.
+| {{#ev:youtube|TbdkXOo0z94|200x200|right||frame|loop=1&autoplay=0&playlist=TbdkXOo0z94}}
+|}
+{{Construction Kits Buyers Guide}}
 [[Category:Primary]]
 [[Category:Secondary]]
-[[Category:Mechanisms]]
 [[Category:Levers]]