US Patent: 214,057 - Screw-Wrench


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


Quick search:	Patent number:	Patent Date:

US Patent: 214,057

Screw-Wrench

Patentee:

George Valentine Sheffield (exact or similar names) - New York, NY

USPTO Classifications:

81/137

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

John Frederick Meyer - New York, NY

Manufacturer:

Not known to have been produced

Witnesses:

Duncan Campbell

Elbert L. Burnham, Jr.

Henry Eichling

E. W. Meyer

Patent Dates:
Applied:	Dec. 31, 1878
Granted:	Apr. 08, 1879

Patent Pictures:

George V. Sheffield patent April 8, 1879

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz

Description:

The patent describes a manufacturing process that involves assembling the parts, and fusing some of them with molten Babbitt metal to prevent their disassembly.

The wrench is a quick-adjust using a partial screw on the rod, and partial rack inside the corresponding handle section.