Ice Auger, Patent Model

Ice Auger, Patent Model

William A. Clark of New Haven, Connecticut, submitted this model with his patent that received number 139769 on June 10th, 1873. The patent describes an auger to bore holes in ice with the addition of a small threaded point to the leading end of a standard, helical drilling bit. The point would cut a pilot hole into the ice, and its threaded sides would grip the ice, pulling and guiding the entire auger forward.
"I have found by experiment that when an attempt is made to bore into ice with the ordinary gimlet or screw-point," William Clark wrote in his patent specification, "the point will not take hold on the ice, the screw simply fracturing and breaking away the ice around it so that the screw can get no hold in it." His "Improved Tool for Boring in Ice" aimed to solve this problem with its threaded leading point, which would grip the ice and hold the auger's "cutting-lips firmly to their work."
Currently not on view
Object Name
patent model, auger, ice
Object Type
Patent Model
Date made
patent date
Clark, William A.
Clark, William A.
associated place
United States: Connecticut, New Haven
Physical Description
steel (overall material)
overall: 5 1/2 in x 1 in; 13.97 cm x 2.54 cm
ID Number
catalog number
accession number
patent number
Patent Models
See more items in
Work and Industry: Maritime
Industry & Manufacturing
America on the Move
Data Source
National Museum of American History
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