Presses – Portable receptacle lid applying – With gathering of contents
Patent
1996-01-25
1997-06-17
Gerrity, Stephen F.
Presses
Portable receptacle lid applying
With gathering of contents
72 215, 72432, 100257, 100282, B30B 1528
Patent
active
056387482
ABSTRACT:
The invention pertains to a press comprising, a drive mechanism, a slide and at least two connecting rods connecting between the drive mechanism and the slide for reciprocally driving the slide. At least two fluid valves are connected to respective connecting rods and manifolded together with a hydraulic chamber disposed in or adjacent the connecting rods. An electrically adjustable proportional valve is connected to the fluid valves which operate to vary the pressure at which the fluid valves open to unload the slide. A variable system pressurizing mechanism for pressuring said chambers to a predetermined system pressure is utilized while the mechanism may unload the slide if pressure within a hydraulic chamber exceeds a predetermined system pressure. A variable relief mechanism automatically relieves pressure within the hydraulic chambers dependent on an operating state of the press.
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Gerrity Stephen F.
Knuth Randall J.
The Minster Machine Company
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