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Model: X01 Verge and Foliot Escapement
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Voigt
Group:
Clock Escapements
ID:
X01
Title (English):
Verge and Foliot Escapement
Title (German):
Spindelhemmung
Creator:
Franz Reuleaux
Date Created:
1882-00-00
Manufacturer:
Gustav Voigt Werkstatt
Size:
Base: Width x Depth [217,234]mm; Overall: W x D x Height [217,239,379]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:
Escapements convert static energy, as in the form of a falling weight, into periodic oscillations which can then be used to measure the passage of time. As such escapements are dynamic mechanisms as opposed to kinematic devices. This model has its origins around the first millennium according to Reuleaux and certainly by the middle ages c 1300, according to other references. This model has a balance wheel with elastic spring. The original verge and foliot did not have a harmonic oscillator until Huygens(1629-1695) added the pendulum to control the period of the oscillation. Later the balance wheel was used to replace the pendulum as in the sea going chronometers developed by John Harrison in the 18th century. A verge and foliot escapement was used in many cathedral tower clocks as in Salisbury Cathedral (1386) in England. Many clock escapement models may be seen in the National Clock and Watch Museum in Columbia Pennsylvania.
Descr Author:
Francis Moon
Descr Date:
2001-00-00
Image Metadata
Title:
X01. Verge and Foliot Escapement
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/X01.jpg
Size (w x h):
256 x 384

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