US Patent: 2,206,047
|
| Tap and Die Holder
|
|
Patentee:
|
|
| John E. Poorman (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Aug. 22, 1938 |
| Granted: |
Jul. 02, 1940 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
|
|
Description: |
| Claim:
The primary object of the invention is to provide a tap and die holder of such type as will avoid abrupt abutments when the parts are brought into contact when cutting a thread, and thereby conserve accurate assembly and the production of accurate work. |
|
