US Patent: 45,850
|
Improved Machine for Forging File Blanks
|
|
Patent Dates:
|
Granted: |
Jan. 10, 1865 |
USPTO pdf tiff Google Patents
Report data errors or omissions
|
Description: |
Swage forming of file blanks to a consistant shape for machine cut files. Although the text makes no mention of his file machine patents, 42,216 and 42,217, it is assumed that this was a natural development in support of his machine cut file operations. |
|