Earth-Augers.
Description:
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.
Item Type:
Refine your search to only
Patent
Partner:
UNT Libraries Government Documents Department