Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 225,745
Dies For Forming Wrench-Heads
Patentee:
Luke Chapman (exact or similar names) - Collinsville, CT

USPTO Classifications:
72/352

Tool Categories:
wrenches : wrench components : wrench jaw components

Assignees:
Collins Co. - Collinsville, CT

Manufacturer:
Not known to have been produced

Witnesses:
Thos. Eustice
Robt. F. Gaylord
Wm. F. Simonds

Patent Dates:
Applied: Apr. 23, 1879
Granted: Mar. 23, 1880

Patent Pictures:
Luke Chapman patent March 23, 1880
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz
Description:
Two dies hold the shank and provide a socket for the lower portion of the head. The third die upsets the metal and forms the top surface of the head. This set of dies and related forging steps makes provision for excess metal to form "fins" which are later trimmed off. Champman calls this an improvement on his Feb. 4, 1873 patent (no. 135,406).

Collins monkey wrenches produced after this time may shown signs of having been forged this way upon close examination.

Copyright © 2002-2024 - DATAMP