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US Patent: 55,144
Improvement in Augers
Countersink for Bolts
Patentee:
Henry T. Moody - Newburyport, MA

USPTO Classifications:
408/201, 408/214

Tool Categories:
woodworking tools : hand drills : drill bits : countersinks
trade specific : shipwright

Assignees:
None

Manufacturer:
Henry T. Moody - Newburyport, MA

Witnesses:
A. W. Greenleaf
Abbie M. Greenleaf

Patent Dates:
Granted: May 29, 1866

Patent Pictures:
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Description:
Primarily intended for ship building, the purpose of this auger is to enlarge an existing hole deep enough provide for the head of a bolt and a covering plug. The detachable cylindrical lead-plugs were to be provided in various diameters to accommodate different sizes of bolt-holes.

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