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Model: S24 Lemniscoidal Linkage of the First Kind by Watt
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Voigt
Group:
Straight-line Mechanisms
ID:
S24
Title (English):
Lemniscoidal Linkage of the First Kind by Watt
Title (German):
Lemniskoidenlenker I. Art von Watt
Creator:
Franz Reuleaux
Date Created:
1882-00-00
Manufacturer:
Gustav Voigt Werkstatt
Size:
Base: Width x Depth [202,89]mm; Overall: W x D x Height [202,122,296]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:
straight-line linkage, lemniscate, Watt
Description:
This mechanism is a special form of the four-bar linkage (model C-1) used by James Watt to convert the rotary motion of a steam engine balancer arm into approximate straight-line motion of the pump piston in the late 18th century. Watt is often cited for his invention of the separate steam condenser that dramatically increased the efficiency of his engine over the Newcommen steam engine. However, he was very proud of his invention of the straight-line linkage and a painting of him in the National Gallery in London shows him contemplating a drawing of this linkage. Reuleaux’s use of the term 'lemniscate' for this mechanism refers to a special case of the four-bar linkage that will trace out one of the forms of a lemniscate curve, a double-loop curve with a flat, approximate straight-line section. In addition to Watt's linkage mechanism that created an approximate straight line motion, he also invented a planetary gear mechanism to convert linear motion of the cylinder to rotary motion of the flywheel and a rotating ball governor that controlled the speed of the engine.
Descr Author:
Francis Moon
Descr Date:
2004-07-01
Image Metadata
Title:
S24. Lemniscoidal Linkage of Watt (First Type)
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/S24.jpg
Size (w x h):
256 x 384

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