US Patent: 393,421
|
| Screw Driver
|
|
Patentee:
|
|
| Felix Chantrell (exact or similar names) - Reading, PA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Apr. 28, 1888 |
| Granted: |
Nov. 27, 1888 |
|
Patent Pictures:
|
|
Felix Chantrell patent November 27, 1888 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| The patent has a metal cap at the end of the handle, with an interior spring, and a tapered throat that engages a corresponding flared end on the screwdriver shank. This provides a kind of ratchet action. |
|
