US Patent: 1,721,182
|
| Angle Iron Shear
|
|
Patentee:
|
|
| John Jensen (exact or similar names) - Rockford, Winnebago County, IL |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Apr. 20, 1927 |
| Granted: |
Jul. 16, 1929 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for Roper-Whitney Co.
|
|
Description: |
| Claim:
An angle iron shear comprising, in combination, a support having an opening therein stationary shear blade secured to the support and having an angular slot therein adapted to receive the angle iron to he cut and providing two cutting edges, an arm pivoted to the support adjacent one end of the slot, an operating lever pivoted to the support on the side of the slot opposite the pivot for said arm, an angular blade carried by said armm and adapted in the swinging movements of the arm to engage first with one wall or leg of the angle iron and then with the other, and gear elements rigid with the arm and lever respectively whereby the lever exerts a gradually increasing leverage upon the arm as the point of engagement of the movable shear blade with the work moves away from the fulcrum point of the arm. |
|
