US Patent: 846,274
|
| Carpenter's square
|
|
Patentee:
|
|
| George Yates (exact or similar names) - Wyoming, PA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Feb. 05, 1906 |
| Granted: |
Mar. 05, 1907 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Jeff Joslin
|
|
Description: |
| "My invention relates to an improvement in carpenters' squares, and has for its object the provision of a device whereby the carpenter, though possessed of but a rudimentary knowledge of mathematics, may estimate correctly and rapidly the length of rafter having a certain pitch necessary for a structure of given dimensions, thus enabling him to calculate the requisite amount of material without wastage, and by means of which square he can make the upper and lower terminal cuts of the rafter at the proper angles without supplementary tools or calculations." |
|
