US Patent: 2,719,449
|
| Open End Wrench Locking Means
|
|
Patentee:
|
|
| Walter J. Johnson (exact or similar names) - Buffalo, NY |
|
|
Patent Dates:
|
| Applied: |
Jul. 27, 1953 |
| Granted: |
Oct. 04, 1955 |
|
Patent Pictures:
[
1 | 2
]
|
|
Walter J. Johnson patent October 4, 1955 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| J.H. Williams & Co. adjustment lock for "Crescent" style adjustable wrench.
The center shaft for the adjusting worm has polygonal (hexagonal) shape, and fits in a corresponding polygonal bore in the wrench body. A portion of the adjusting worm has a matching sized area cut in some multiple of the sides of the polygon. A spring detent holds the center shaft in one of two positions. In one position the adjusting worm is free to turn; in the other it is engaged with the center shaft. The patent describes alternate forms for the bore and spring detent.
Churchhill, Rich, Weymouth & Engel - patent attorneys
|
|
){kind=link}
){kind=link}