US Patent: 503,528
|
| Pattern Maker's Scale
|
|
Patentee:
|
|
| James T. Cowley (exact or similar names) - Lowell, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Dec. 12, 1892 |
| Granted: |
Aug. 15, 1893 |
|
Patent Pictures:
|
|
James T. Cowley patent August 15, 1893 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Diagonal lines on the rules represent different percentages of "shrink" to account for shrinkage in brass patterns, iron castings, and combined "shrink" of the two stages, or any other standard "shrink" rates. |
|
