1818-01-15 Patent 4196 - Diagrams
Diagrams showing mechanism of Lewis & Davis's Patent "...for certain Improvements on Shearing Machines...", dated 18 January 1818.
The Repertory of Arts and Manufactures
Series: 2
Volume: 37-38
Year: 1820-21
Publication
Patent Document
Date
Source
Hathi Trust/Google Books/Repertory of Arts and Manufactures/P443
Link