Rock Drill And Instrument Using Revolving Hammers #1 is a piece of digital artwork by Drawspots Illustrations which was uploaded on July 7th, 2014.
Rock Drill And Instrument Using Revolving Hammers #1
No. 425,737. Patented Apr. 15, 1890.
WILLIAM G. A. BONWILL
The invention relates to improvements in rock-drills and other instruments using a... more
Title
Rock Drill And Instrument Using Revolving Hammers #1
Artist
Drawspots Illustrations
Medium
Digital Art
Description
No. 425,737. Patented Apr. 15, 1890.
WILLIAM G. A. BONWILL
The invention relates to improvements in rock-drills and other instruments using a rex 5 volving hammere-such, for instance, as dental pluggers. The revolving hammer is a rapidly-revolving wheel or part having a hammer lug or projection on its periphery, which at every revolution of the Wheel strikes upon the end of a tool-carrying spindle, so as to impart a rapid succession of blows thereto and enable the tool at the opposite end of the spindle to do its work
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July 7th, 2014
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