Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 388,007
Clamp Screw
Patentee:
Pardon A. Whitney - Southington, CT

USPTO Classifications:
411/397

Tool Categories:
work holding : clamps

Assignees:
None

Manufacturer:
Peck, Stow & Wilcox Co. - Southington, CT

Witnesses:
John Edwards, Jr.
Milton H. Bassett
Stephen Walkley
E. M. Stannard

Patent Dates:
Applied: May 19, 1888
Granted: Aug. 14, 1888

Patent Pictures:
Pardon A. Whitney patent Aug. 14, 1888
USPTO pdf tiff
Google Patents
Report data errors or omissions
"Vintage Machinery" entry for Peck, Stow & Wilcox
Description:
Malleable "wing nut" type head pinned to a steel screw; this makes a more durable screw for "C" or bar clamps.

This improvement was incorporated into clamps produced by Peck, Stow & Wilcox, including "C" clamps with bodies corresponding to design patent D18,376. -- See that DATAMP entry for photos, 1890 product description, etc.

Copyright © 2002-2019 - DATAMP