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US Patent: 20,728
Hand-drill
Patentee:
Henry H. Packer - Boston, MA

USPTO Classifications:
408/121

Tool Categories:
woodworking tools : braces : ratchet braces
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
H. H. Packer - Boston, MA

Witnesses:
Charles Healey
Joseph Greer, Jr.

Patent Dates:
Granted: Jun. 29, 1858

Reissue Information:
Reissued as RE2,140 (Jan. 02, 1866)

Patent Pictures: [ 1 | 2 ]
Henry H. Packer patent June 29, 1858
USPTO pdf tiff
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Description:
The primary innovation in Packer's ratchet is the enclosed feed screw and screw barrel which "are effectually protected from all dust or other injurious matter."

The inventor applied for an extension of the original patent. However, the inventor had earlier applied for, and been granted, a reissue. The Commissioner of Patents ruled that the original patent could not, therefore, be extended.

This patent is the "PACKER RATCHET" which was used as a ratchet driver for metal drills.

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