US Patent: 2,224,226
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| Industrial Cutting Tool
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Patentee:
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| John Jenson (exact or similar names) - Rockford, Winnebago County, IL |
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Patent Dates:
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| Applied: |
Dec. 21, 1936 |
| Granted: |
Dec. 10, 1940 |
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Joel Havens
"Vintage Machinery" entry for Roper-Whitney Co.
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Description: |
| Claim:
A notching tool for enabling V-shaped notches to be cut along the edge of a piece of sheet metal comprising, in combination, two cross-levers pivoted intermediate their ends to provide coacting jaws, a wedge shaped shearing member of a die mounted on one of said jaws, a complementary V-shaped receiving die member formed from the ends of two metal plates pivoted on either side of the wedge-carrying cross-lever and rigidly secured to a handle, said handle and said plates constituting the second cross-lever, spring means for yieldably urging the cross-levers to a biased position, and an ad justable gauging device, whereby to regulate the depth of cut to be made, comprising a longitudinally shiftable and rotatable gauge plate longitudinally slotted to receive a clamping bolt whereby it may be releasably engaged with a side of the receiving die member, said gauge plate having an gauging abutment rigid therewith and extending from one edge thereof into an active blocking position in the plane of the material to be cut, and having a second gauging abutment extending from the opposite edge of said plate and positionabie for gauging purposes by reversing the plate whereby to provide a relatively large range of regulation with a small gauge plate. |
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