Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 547,653
Pipe Wrench
Patentees:
William H. Burr - Philadelphia, PA
S. Lloyd Wiegand - Philadelphia, PA

USPTO Classifications:
74/164, 81/90.5

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Lacey A. Cadwallader
Cyrus R. Morgan M.D.

Patent Dates:
Applied: Jan. 11, 1895
Granted: Oct. 08, 1895

Patent Pictures:
William H. Burr and S. Lloyd Wiegand patent October 8, 1895
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
The three-part gripping sleeve was designed for non-marring grip. The parts are designed with ribs and webs to avoid varying metal thicknesses which cause problems during casting. The parts interlock, and are held onto the handle by a spring latch. One handle would be supplied with a range of gripping sleeves corresponding to standard pipe sizes. Corresponding British patent GB-189518831 was registered Oct. 8, 1895.

The Parmelee wrenches use a similar three-part gripping sleeve, but those use pins to connect the segments -- (see patent nos. 379,123, 648,706, and 871,436).

Copyright © 2002-2019 - DATAMP