Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 237,594
Wrench
Patentees:
Carl Ludwig Praeger - Philadelphia, PA
Hubert Francisco Praeger - South Bethlehem, PA

USPTO Classifications:
81/111, 81/129.5, 81/149, 81/154

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Chas. Nida
C. Sedgwick
Sarah DeGrath
John Urian
Julia Myers
Geo. Ziegenfuss

Patent Dates:
Applied: Dec. 08, 1880
Granted: Feb. 08, 1881

Patent Pictures: [ 1 | 2 ]
C.L. Praeger and H. F. Praeger patent February 8, 1881 ... first form
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
The self-adjustable jaw's adjustment is held by a spring pushing rack teeth on the shank against a spur tooth on the frame. Alternate forms with and without an intermediate shoe are shown in the drawings.

Copyright © 2002-2020 - DATAMP