US Patent: 922,080
|
Micrometer Screw Driver
Watch Makers Screwdriver
|
|
Patentee:
|
|
| George W. Bowers (exact or similar names) - Somerville, CT |
|
|
Patent Dates:
|
| Applied: |
Nov. 04, 1907 |
| Granted: |
May 18, 1909 |
|
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Steve Gosselin
"Vintage Machinery" entry for Kendrick & Davis
|
|
Description: |
| This Patent relates to screw drivers and the ability to measure the amount of rotation of the screw. This is is especially important in adjusting the timing screws,( or mean time screws) on a watch balance wheel. The screws regulate or adjust the the arc or balance of the wheel.
Sold as K&D #423 Micrometer screwdriver, a small micrometer on the blade keeps track of micro rotations on the blade. Sample marked "K&D Patented May 18, 09" |
|
){kind=link}
){kind=link}