US Patent: 45,854 - Improvement in Mode of Manufacturing Screw Drivers


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 45,854

Improvement in Mode of Manufacturing Screw Drivers

Patentee:

George Parr (exact or similar names) - Buffalo, NY

USPTO Classifications:

72/338, 76/119

Tool Categories:

screwdrivers : screwdriver blades

Assignees:

None

Manufacturer:

George Parr - Buffalo, NY

Witnesses:

W. H. Forbush

W. M. Prince

Patent Dates:
Granted:	Jan. 10, 1865

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Steve Gosselin
"Vintage Machinery" entry for George Parr

Description:

Screwdriver blanks are stamped out of rolled metal plates approximately 3 feet long and in a width which equals the blank size of the tool to be punched.

The blanks are rolled thicker in the middle and with a gradual taper to the ends.