Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 42,738
Grindstone-dresser
Patentees:
Lewis Semple (exact or similar names) - Philadelphia, PA
Robert Barkley (exact or similar names) - Philadelphia, PA

USPTO Classifications:
125/37

Tool Categories:
industrial tools : grinding wheels : grinder dressers
metalworking machines : grinders : grinder dressers

Assignees:
None

Manufacturer:
George C. Howard - Philadelphia, PA

Witnesses:
Charles Howson
Henry Howson

Patent Dates:
Granted: May 17, 1864

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for George C. Howard
Description:
This patent notes a predecessor in Schuyler's grindstone dresser of patent 28,639 but says that Schuyler's dresser-wheel construction was "difficult and expensive, and also very liable to fracture in use". The dresser-wheel of Barkley and Semple is cast in a chilled mold and is claimed to be rugged enough to not require the yielding washers of Schuyler's invention.

Copyright © 2002-2024 - DATAMP