Presses – With additional treatment of material – Winding or folding sheet – web or strand
Patent
1990-05-17
1991-06-25
Hornsby, Harvey C.
Presses
With additional treatment of material
Winding or folding sheet, web or strand
56341, 100 87, B30B 506
Patent
active
050257188
ABSTRACT:
A large round baler having an expansible bale chamber has tension cylinders associated with the chamber for strongly resisting expansion thereof so as to produce dense bales when a bypass valve located in a bypass line interconnecting rod and piston ends of the tension cylinders is positioned for preventing flow through the valve thereby forcing the flow to go through a variable high pressure relief valve located in another bypass line, the bypass valve being selectively shiftable to another position for permitting free flow therethrough when it is desired to produce a soft bale. The baler also includes gate cylinders for opening and closing the discharge gate of the baler. These gate cylinders are connected in circuit with the tension cylinders and the bypass valve is connected to the piston ends of the gate cylinders in such a way as to prevent the gate cylinders from extending at a time when the gate has just been closed, such extension of the gate cylinders, if not prevented, resulting in the gate becoming unlatched.
REFERENCES:
patent: 3722197 (1973-03-01), Vermeer
patent: 4072096 (1978-02-01), Phillips
patent: 4257219 (1981-03-01), Burrough et al.
patent: 4391187 (1983-07-01), Koning et al.
patent: 4393764 (1983-07-01), Viaud
patent: 4433619 (1984-02-01), Anstey et al.
patent: 4545298 (1985-10-01), Viaud
Anstey Henry D.
Roth Arsene
Viaud Jean
Deere & Company
Gerrity Stephen F.
Hornsby Harvey C.
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