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Model: S06 Approximate Four-bar Straight-Line Linkage of the Second Kind After Evans
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Voigt
Group:
Straight-line Mechanisms
ID:
S06
Title (English):
Approximate Four-bar Straight-Line Linkage of the Second Kind After Evans
Title (German):
Angenäherter Ellipsenlenker II. Art
Creator:
Franz Reuleaux
Date Created:
1882-00-00
Manufacturer:
Gustav Voigt Werkstatt
Size:
Base: Width x Depth [202,91]mm; Overall: W x D x Height [202,126,302]mm
Medium:
cast iron and brass on wood pedestal
Rights:
For educational use only. All rights reserved by the contributor(s) and publisher(s).
Audience:
General public
Keywords:
Description:
This mechanism uses three moving links and one grounded link to create an approximate straight-line linkage. The crank and connecting link are not essential to this device nor is the vertical guide to the right of center. The use of the four-bar linkage to produce an approximate straight-line coupler curve was pioneered by James Watt around 1780 as one of his four major improvements of the steam engine. (See models S-24 and S-25). At the time there were no large machine tools precise enough to create accurate guides for linear sliding motion of the pistons. Interest in the mathematics of straight-line mechanisms grew into the 19th century as the need for them declined. However, the subject of kinematic synthesis of linkages to produce special mathematical curves for application to machines continued to evolve into the 20th century.
Descr Author:
Francis Moon
Descr Date:
2004-07-00
Image Metadata
Title:
S06. Approximate Four-bar Straight-Line Linkage of the Second Kind After Evans
Rights:
Jon Reis/www.jonreis.com. Jon Reis Photography grants Cornell University Libraries, and the Cornell College of Engineering the rights to display copyrighted images of the Reuleaux Collection of Kinematic Mechanisms on the Cornell University and National Science Digital Library web sites and for unlimited use in Cornell University Library publications for education purposes only. Rights for all other uses such as editorial, advertising, web use and display by third parties not affiliated with Cornell University are reserved by the photographer.
Descr:
Date Created:
2005-01-19 11:02:16
URL:
http://kmoddl.library.cornell.edu/stillImages/small/S06.jpg
Size (w x h):
256 x 384

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