Cutting – Means to drive or to guide tool – With transmission yieldable on overload
Patent
1982-10-20
1984-12-04
Yost, Frank T.
Cutting
Means to drive or to guide tool
With transmission yieldable on overload
83317, 83328, 83640, B26F 106
Patent
active
044857136
ABSTRACT:
A punching device comprising a pair of opposed complementary dies vertically guided by a pair of guide rods each rotatably connected to a crank pin to continuously punch band material moving between the dies. The crank pins rotate synchronously in opposed directions with their crank centers spaced only vertically relative to the working plane. Each of the dies supports a plurality of cooperating tools and the tools in one of the dies are independently axially movable male punches sealingly guided in ducts communicating with a closed chamber filled with a fluid.
REFERENCES:
patent: 704941 (1902-07-01), Slick
patent: 1140392 (1915-05-01), Novick
patent: 2136210 (1938-11-01), Hall
patent: 2406808 (1946-09-01), Conner
patent: 2440848 (1948-05-01), Conner
patent: 3178983 (1965-04-01), Brunson
patent: 3381562 (1968-05-01), Tapscott
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