Cutting – With work immobilizer – Means to clamp work
Patent
1976-05-10
1978-04-04
Yost, Frank T.
Cutting
With work immobilizer
Means to clamp work
83463, 83465, 83639, 83697, B26D 702
Patent
active
040820262
ABSTRACT:
A hydraulic cylinder mounted on a frame assembly is communicated with a hand operated pump for actuation thereby. A plurality of punch-die assemblies, to be selectively mounted in the frame assembly for perforating, notching clipping or like operations, each comprise a punch or punches carried by a punch holder constrained to up-and-down motion relative to a die. When placed in the frame assembly, any selected punch-die assembly has its punch holder disposed under a ram connected to the piston of the hydraulic cylinder, so that upon manual activation of the pump, the punch or punches can be forced down to perform a desired operation in cooperation with the die. The punch and die assembly has a presser which urges the workpiece against a lateral side of the punch, and the workpiece can be acted upon at two locations at the same time, one location being directly above the other.
REFERENCES:
patent: 1040497 (1912-10-01), Bosler
patent: 2685928 (1954-08-01), Bergh
patent: 3771401 (1973-11-01), Jasinski
patent: 3886825 (1975-06-01), Tanaka
Yoshida Kogyo K.K.
Yost Frank T.
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