An appliance fixed in the headgear to limit the drop of a cage after an overwind. The upward speed and momentum of the loaded cage (after its release from the rope) may be such that its subsequent drop is so severe as to fracture the suspension gear, resulting in the cage falling down the shaft. The amount of drop is limited by the catch gear, which consists of a series of catches suspended from beams supported on hydropneumatic buffers to reduce the impact shock. The cage is released by raising it slightly and retracting the catches. See also: detaching hook; overwind. Nelson
Source:
Dictionary of Mining, Mineral, and Related Terms












    What Topic Is Your Geology Paper On?  

 ENTER YOUR TOPIC HERE:    

Over 70,000 Research Papers, Essays & Term Papers - Ready to Download!

<Navigation>


Search!


<Index>

Acoustics
Agriculture
Anthropology
Archaeology
Architecture
Biology
Biotechnology
Cancer
Chemistry
Composers
Dance
Electronics
Environment
Fine Art
Geology
Invertebrate
Plant
Political Science
Psychology
Scientists
Sociology


<Top Level>

WebRef.org
About Us
Copyright Notice
Privacy Statement


Iverson Software: Providing Reliable & Innovative Education Solutions since 1987!

About Us  DeveloDex™  OptiMall™  Success Tools  Tabularium™  WebRef™

Google
Search WWW Search webref.org


K12 Shipping
JourneyEd.com is the leading supplier of discounted software to students and faculty.


icon



Easy CGI Web Hosting
This site hosted by EASY CGI Web Hosting
Iverson Software Co., is not responsible for typographical errors. Information deemed to be accurate, but not guaranteed. Offers subject to change at any time. Copyright © 1987-2006 Iverson Software Co. Some material copyright of their respective holders. All Rights Reserved Worldwide.