trip hammer

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Related to Helve Hammer: trip hammer

trip ham·mer

also trip·ham·mer or trip-ham·mer (trĭp′hăm′ər)
n.
A heavy, power-operated hammer that is lifted by a cam or lever and then dropped.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
It has a line shaft that powers a Hawkeye helve hammer and a post drill.