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Model: 139 Gravity Drop Hammer
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Walker
Group:
[Nos. 129-144] Clock Escapements, Power Hammers and Punch
ID:
139
Title (English):
Gravity Drop Hammer
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:
Description:
In this model, the rod is raised by the action of the revolving cam against the green lift collar. These are used for crushing rock to extract the ore and are generally mounted in gangs, having a large number in line. [Virginia Downward & William M. Clark, 1930] [Editorís Note: In the original Newark Museum model of 1930, both models 138 and 139 were on the same panel, 138 being a partial rack and pinion drop hammer. In the Boston Museum of Science, the right-hand model of 138 has replaced a typewriter key mechanism in 139. The action of the lift mechanism in 139 is like a cam mechanism. FCM]
Descr Author:
Francis Moon
Descr Date:
2005-00-00
Image Metadata
Title:
139
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/139.jpg
Size (w x h):
334 x 331

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