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Model: N22 Power Escapement Ratchet With Detachable Regulator
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Voigt
Group:
Ratchet Mechanisms
ID:
N22
Title (English):
Power Escapement Ratchet With Detachable Regulator
Title (German):
Schaltwerk mit laufendem Gesperre und abnehmbarer Steuerung. Die Steuerung passt auch zu No.23
Creator:
Franz Reuleaux
Date Created:
1882-00-00
Manufacturer:
Gustav Voigt Werkstatt
Size:
Base: Width x Depth [289,90]mm; Overall: W x D x Height [406,100,305]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:
ratchet, escapement
Description:
Models 20, 22, 24, 25, 26 fall into a category of mechanisms that Reuleaux called power escapements. Escapements in clocks regulate small amounts of energy to keep the pendulum swinging (e.g., see model X-3). Power escapements regulate the motion of larger energy systems. Reuleaux seems to have designed these models as analogs to dynamic regulators, such as the rotating balls of Watt’s speed regulator in steam engines. Reuleaux gave only one description of a power escapement for model N-26 in The Constructor. However, he did not give a direct application for these mechanisms. Neither do they appear in later treatises or in more modern model collections. Perhaps one can call them “the mystery mechanisms”. In this model a lever and pawl engages a ratchet wheel to lift or lower a heavy weight. The inverted pendulum and the weight below automatically return the lever to its original position. The lower weight is also detachable from the lever. The reference in the German title to model N-23 is not clear since there is no picture of N-23 in the graphical section of the Voigt catalog. An application of a power escapement of the verge and foliet type (model X-1) for speed regulation of a pulley-driven water pump may be seen in the 17th century compendium of machines book by Jacob de Strada.
Descr Author:
Francis Moon
Descr Date:
2004-07-00
Image Metadata
Title:
N22. Power Escapement Ratchet With Detachable Regulator
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/N22.jpg
Size (w x h):
384 x 256

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