1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Earth-Augers.
Patent for a new and improved earth auger. This design calls for "a hinged door having its edge folded or bent to form an air-tube . . . [and] a pair of hemi-cylindrical doors having on one or both an air duct or ducts," as well as interchangeable bits with a shouldered and threaded shank and a nut combined and arranged in a novel way (paras. 12-15).
Date:
October 30, 1877
Creator:
Fields, Daniel G.
System:
The Portal to Texas History