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Model: 127 Vertical Paddle Propeller Wheel
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Walker
Group:
[Nos. 113-128] Water Handling and Power Devices
ID:
127
Title (English):
Vertical Paddle Propeller Wheel
Title (German):
Creator:
William M Clark
Date Created:
1930-00-00
Manufacturer:
Size:
38.7cm x 38.7cm
Medium:
Cast aluminum and wood (painted) on a vertical panel.
Rights:
For educational use only. All rights reserved by the contributor(s) and publisher(s).
Audience:
General public
Keywords:
parallel mechanisms
Description:
This is the most efficient type of paddle wheel. The green driver arms are the supports for the rotating paddles. The red arms are attached by crank arms to the green arms. The red driver is eccentric to the green driver. The rotating action of the two causes the paddles through the crank arm connections to be held always in a vertical position with their surfaces always meeting the water at right angles to their travel. This is the most efficient angle for driving. [Virginia Downward & William M. Clark, 1930] [Editorís Note: This device is essentially four coupled, four-bar mechanisms similar to the parallel guides in the Reuleaux-Voigt model T14. While the application to paddle wheel vehicles may be dated today, in helicopter blade mechanisms the angle of the rotor is changed in a predetermined orientation with respect to the vehicle as the blade rotates similar to Reuleaux models, T14 and models U1, U2. The Clark model 127 was copied after the Figure 489 in the 1868 catalog of mechanical movements by Henry T. Brown. One can see the evolution of kinematic ideas from the age of steam to modern aircraft mechanisms. FCM]
Descr Author:
Francis Moon
Descr Date:
2005-00-00
Image Metadata
Title:
127
Rights:
Digital file property of Cornell University Library. Made available under the same terms as a Creative Commons Attribution Non-commercial Share Alike License. For all other uses see KMODDL Rights & Permissions.
Descr:
Date Created:
2006-08-06 23:53:42
URL:
http://kmoddl.library.cornell.edu/stillImages/Clark/small/127.jpg
Size (w x h):
334 x 334

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