Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 1,424,712
Attachment For Wrenches
Patentee:
August Edwin Carlberg (exact or similar names) - Worcester, MA

USPTO Classifications:
81/55

Tool Categories:
wrenches : brace wrenches
wrenches : socket wrenches

Assignees:
Walden-Worcester, Inc. - Worcester, MA

Manufacturer:
Walden-Worcester, Inc. - Worcester, MA

Witnesses:
none listed

Patent Dates:
Applied: Jun. 16, 1920
Granted: Aug. 01, 1922

Patent Pictures: [ 1 | 2 ]
August Edwin Carlberg patent August 1, 1922
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz
Description:
The patent describes a clamp-on auxiliary structure to convert a brace socket wrench into a double socket with the second socket acting as a nut holder with the primary socket turning the bolt. A spring pulls the holder socket toward the primary socket.

The primary application inspiring such designs was the oil pan of the Model T Ford engine which used bolts to fasten to the engine block rather than cap screws.

The WALDEN-WORCESTER No. 6418 Nut Holding Attachment For Socket Wrenches shown on the "Alloy Artifacts" web site resembles this patent although it is marked "Pat. Dec. 21, 1915" which "Alloy Artifacts" connects to patent no. 1,164,815. The example shown in image (2) is marked WALDEN WORCESTER 6418 PAT. PEND.

Copyright © 2002-2024 - DATAMP