Presses – With additional treatment of material – Winding or folding sheet – web or strand
Patent
1992-10-26
1993-11-23
Gerrity, Stephen F.
Presses
With additional treatment of material
Winding or folding sheet, web or strand
56341, B30B 506, A01F 1500
Patent
active
052634108
ABSTRACT:
The present invention provides a valve and a hydraulic circuit useful on a baler of the type used to form cylindrical bales of crop stock, the baler having a rear gate movable by a gate hydraulic cylinder between a closed position and an open position for discharge of a bale and further having a bale discharge apparatus having a bale engaging bumper movable by a bumper hydraulic cylinder between retracted and extended positions. The gate and bumper hydraulic cylinders are interconnected in a hydraulic circuit having a reservoir, a hydraulic pump connected to the reservoir for pumping hydraulic oil into an out of the reservoir, and at least one two-way sequence valve connected to the pump and in parallel to the gate hydraulic cylinder and the bumper hydraulic cylinder, the valve allowing uninterrupted flow between the reservoir and the gate cylinder and selectively actuable so as to allow oil to flow to and from the bumper cylinder to selectively actuate the bumper cylinder.
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