US Patent: 1,477,337
|
| Spiral tool
|
|
Patentees:
|
| Thomas J. Fegley (exact or similar names) - Philadelphia, PA |
| George O. Leopold (exact or similar names) - Philadelphia, PA |
|
|
Patent Dates:
|
| Applied: |
Mar. 30, 1923 |
| Granted: |
Dec. 11, 1923 |
|
Patent Pictures:
[
1 | 2 | 3
]
|
|
|
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Steve Gosselin
"Vintage Machinery" entry for North Bros. Manufacturing Co.
|
|
Description: |
| The Patent relates to the simple means of securing the locking mechanism to the casing. Earlier models only used a screw this Patent uses a slot and projecting key as well as a screw to secure everything.Used on the #'s 30A,31A,35,130A, 131A and 135. |
|
){kind=link}
){kind=link}
){kind=link}