US Patent: 80,583 - Improvement in screw-drivers


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


Quick search:	Patent number:	Patent Date:

US Patent: 80,583

Improvement in screw-drivers

Patentee:

Isaac Allard (exact or similar names) - Belfast, ME

USPTO Classifications:

74/127

Tool Categories:

screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:

Isaac Allard - Belfast, ME

Frank A. Howard - Belfast, ME

Manufacturer:

F. A. Howard & Son - Belfast, ME

Witnesses:

A. D. Chase

Timothy Chase

Patent Dates:
Granted:	Aug. 04, 1868

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Steve Gosselin
"Vintage Machinery" entry for Howard Manufacturing Co.

Description:

Information taken from Clifford D. Fales' database.

Earliest patent for a spiral screwdriver. This patent appears on some ALLARD/HOWARD models that also show 11/24/1874—(patent 157,087) and 03/01/1892 (patent 470,001) but 1868 patent features are not incorporated; see patent 157,087 and patent 470,001.

Marked, "F. A. Howard /—Maker—/ Belfast, Me. / Allard's Pat. Aug. 4, 1868 / Nov. 24. 1874" or "F. A. Howard /- Maker—/ Belfast, Me. / Pat'd / Aug. 4, 68 / Nov. 24. 74 / Mar. 1, 92".