Abstract: A folding auxiliary seat assembly for a tractor cab includes a brace plate pivotally connected to interior structure of the cab, a main cushion hingedly connected to the brace plate, and an outer cushion hingedly connected to the main cushion. A latch pawl extending from the brace plate cooperates with a spring latch on a side wall of the interior structure to latch the assembly in a retracted position. In the retracted position, the outer cushion is folded beneath the main cushion, and the brace plate is pivoted to a vertical position. The main cushion has retainer sockets formed on an under side thereof which are positioned to receive retainer pins mounted on a top wall of the interior structure when the seat assembly is in a deployed position. In the deployed position, the outer cushion is folded out to a coplanar relationship with the main cushion, and the brace plate is angled away from the side wall of the supporting interior structure.

Abstract: The tailings may be returned to the threshing section of the combine for re-threshing or, at the option of the operator, routed to the cleaning section without passing through the threshing section.

Abstract: Conventional fluid control circuits for brakes, including separate parking and retarding valves, include high volume lines and/or complex mechanical linkages to selectively effect the braking functions. This invention provides a relatively non-complex fluid control circuit (10) for closely controlling engagement of brakes (15), including a first valve (25) for controlling engagement of the brakes (15), a pilot line (20), a second valve (47) connected to the pilot line (20), and movable between a closed position and an open position for venting an inlet (28) to the first valve (25), and a third valve (19 or 22) for closing the pilot line (20) and the second valve (47) or for venting the pilot line (20) to open the second valve (47) to vent the inlet (28) to the first valve (25). The third valve (19 or 22) may include interassociated parking (19) and retarder (22) valves adapted for common attachment within a cab of a vehicle for ready access by an operator thereof.

Abstract: PCT No. PCT/US79/00595 Sec. 371 Date Aug. 13, 1979 Sec. 102(e) Date Aug. 13, 1979 PCT Filed Aug. 13, 1979 PCT Pub. No. WO81/00386 PCT Pub. Date Feb. 19, 1981Conventional fluid control circuits for service brakes and the like do not always provide an operator with "pedal feel" to indicate the degree of brake engagement. Such "pedal feel" is particularly desirable in braking systems wherein the brakes thereof are spring-engaged and released by hydraulic fluid pressure. This invention provides a control valve (18) having an inlet (20), an outlet (21), a valve member (19) movable betweeen closed and open position, and a first spring (30) for urging the valve member (19) toward its closed position.

Abstract: PCT No. PCT/US79/00598 Sec. 371 Date Aug. 13, 1979 Sec. 102(e) Date Aug. 13, 1979 PCT Filed Aug. 13, 1979Conventional fluid control circuits for brakes and the like normally comprise a control valve interconnected between a pressurized fluid source and the brakes for selectively actuating the same. A problem arises in that upon starting of the vehicle during cold weather conditions, the hydraulic fluid is not sufficiently warm to ensure efficient brake operation. This invention includes conduits (36) for sequentially communicating fluid from a fluid source (11), through an actuating chamber (14) of a brake (15), and to a control valve (25) in series when the brake (15) is either in its disengaged or engaged condition of operation. Furthermore, upon actuation of the valve (25), an operator is enabled to detect by "feel" the degree of brake engagement.

Abstract: In a hydraulic circuit (10) fluid is passable from a priority valve (28) through control and lockout valves (30,32) to, for example, a suspension system (27) of a work vehicle (20) or control cylinders of a steering assembly. The lockout valve (32) provides for controllably operating or locking out, for example, the operation of the suspension system (27) where desired. The control valve (30) controllably passes fluid to the suspension system (27), for example, based upon demand created by operation of the system (27). The control valve (30) also delivers a signal to the priority valve (28) for maintaining priority of fluid flow from the priority valve (28) to the suspension system (27). In the circuit (10), the signal is automatically, controllably blocked in response to locking out the operation of the suspension system (27) for preventing the priority valve (28) from maintaining priority fluid flow to the non-operative suspension system (27).