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Home > Art, Film & Photography > Hammers: Trip Hammer
Hammers: Trip Hammer

Hammers: Trip Hammer


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About the Book

Chapters: Trip Hammer. Source: Wikipedia. Pages: 82. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: A trip hammer, also known as a helve hammer, is a massive powered hammer used in: Trip hammers were usually raised by a cam and then released to fall under the force of gravity. Historically, trip hammers were often powered by a water wheel, and are known to be used in China as long ago as 20 AD, in Rome by the first century AD and in medieval Europe by the 12th century. During the Industrial Revolution the trip hammer fell out of favor and was replaced with the power hammer. Often multiple hammers were powered via a set of line shafts, pulleys and belts from a centrally located power supply. Hydraulic powered trip hammer set, illustration from the Tiangong Kaiwu encyclopedia of 1637, written by Song Yingxing (15871666)In ancient China, the trip hammer evolved out of the use of the pestle and mortar, which in turn gave rise to the treadle-operated tilt-hammer (Pinyin: dui; Wade-Giles: tui). The latter was a simple device employing a lever and fulcrum (operated by pressure applied by the weight of one's foot to one end), which featured a series of catches or lugs on the main revolving shaft as well. This device enabled the labor of pounding, often in the decorticating and polishing of grain, and avoided manual use of pounding with hand and arm. Although historians assert that its origins may span as far back as the Zhou Dynasty (1050 BC221 BC), the earliest texts to describe the device are the Ji Jiu Pian dictionary of 40 BC, Yang Xiong's text known as the Fangyan of 15 BC, as well as the Xin Lun written by Huan Tan about 20 AD (during the usurpation of Wang Mang). The latter book states that the legendary mythological king known as Fu Xi was the one responsible for the pestle and mortar (w...More: http: //booksllc.net/?id=152767


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Product Details
  • ISBN-13: 9781156489819
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • Sub Title: Trip Hammer
  • Width: 229 mm
  • ISBN-10: 1156489814
  • Publisher Date: 15 Sep 2010
  • Binding: Paperback
  • Spine Width: 5 mm
  • Weight: 136 gr


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