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Model: N21 Alternating-clamp, Friction Clutch Ratchet
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Voigt
Group:
Ratchet Mechanisms
ID:
N21
Title (English):
Alternating-clamp, Friction Clutch Ratchet
Title (German):
Drosselklemm-Gesperre
Creator:
Franz Reuleaux
Date Created:
1882-00-00
Manufacturer:
Gustav Voigt Werkstatt
Size:
Base: Width x Depth [289,121]mm; Overall: W x D x Height [322,129,246]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
Description:
In this model alternating motion of the lever will engage and disengage the two wheels to lower or raise a weight attached to the pulley. Attached to the lever is a specially shaped friction pawl situated between the two wheels that will either prevent relative motion or allow relative motion of the wheel and pawl depending on the position of the lever. Reuleaux called these devices friction clutch ratchets. In the Voigt catalog he also used the German word "Drosselklemm" literally "throttle clamp'. We have use the term 'alternating clamp' since it more accurately portrays the action of the ratchet mechanism.
Descr Author:
Francis Moon
Descr Date:
2004-07-00
Image Metadata
Title:
N21. Throttle-clamp, Friction Clutch Ratchet
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/N21.jpg
Size (w x h):
384 x 255

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