Abstract: The invention relates to a sub-frame, a support structure and a cab for a vehicle such as a crawler tractor. The sub-frame is mounted on the vehicle support structure by resilient mountings and a cab is mounted on the sub-frame. In this way, the cab is insulated from vibrations in the support structure.

Abstract: An automatically adjustable V-belt pulley which has a moveable pulley half that is resiliently urged by a compression spring axially towards a fixed pulley half in order to vary the dimension of the V-belt receiving groove defined therebetween and to maintain a substantially constant tension on the V-belt as it expands during continued use. A restraining means is provided between the spring and moveable pulley half which only permits expansion of the spring and axial movement of said pulley half in one direction.

Abstract: A hydraulic power system having a plurality of independent hydraulic power circuits of varied orders of precedence connected in parallel to a single fluid source. Thee is at least one power circuit which is provided with a priority-demand valve means which appropriates a larger volume of fluid for its power circuit when there is a demand for fluid and diverts the remainder of the fluid to the other power circuits which are either equal to or lower in order of precedence.

Abstract: In a hydraulic power system having two independent circuits, wherein one circuit has priority over the other circuit, and the priority circuit furnishes a residual flow to the non-priority circuit, a pressure sensing system is provided in the return flow line of the non-priority circuit which causes a directional flow valve to shift and direct the residual flow back to the priority circuit in the event of a leak in the non-priority circuit which results in a loss of pressure in the return line.

Abstract: In a disk brake assembly having a plurality of rotor disks affixed to a rotatable shaft, a stator disk carried by a stationary housing and journalled on the shaft, and a pressure plate movable under the influence of a hydraulically actuated piston to axially move the disks into frictional engagement with the housing; there is provided a resilient member on the stator disk for separating the disks upon release of the hydraulic pressure, and for retracting the pressure plate and piston.

Abstract: There is provided a rotary corn stalk cutter for use as an attachment on a combine type of harvesting machine which is equipped with a vertically inclined corn head and platform. The cutter includes a housing which is dependingly attached to the bottom of the platform in the open space between two successive row divider points. A telescopic linkage is provided for adjusting the attitude of the cutter housing in order to maintain the knives of the cutter in parallel relationship with the ground regardless of the angular position of the corn head and platform. A ledger blade in combination with the cutter knives is provided for comminutating the cut stalks and an opening is provided in the housing for discharging the chopped material rearwardly of the direction of travel of the combine.

Abstract: A hood for a tractor loader vehicle which is provided with baffles and ducts, for changing the direction of air flow through a heat exchanger in order to reduce the level of sound generated by the fan of the vehicle's cooling system.

Abstract: An air diffuses for use in a seed delivery tube of a pneumatic type of seed planter. This air diffuser is a short length of pipe which is perforated with a plurality of holes. The effective open area of the holes being approximately fifty-percent greater than the open area within the pipe taken on a cross-section of the pipe at the location of the holes. The air diffuser is spliced into the tube at a determinant length from the seed discharge end of the tube. It helps to maintain a uniform spacing of seed planted in the ground by preventing the buildup of back pressure upstream from the seed discharge end of the tube. If back pressure is permitted to build up in the tube, it will change the velocity of the seed traveling through the tube and effect the spacing of the seed planted in the ground.

Abstract: A motor-pump unit is used in combination with an existing hydraulic power transmission system to create an additional or auxiliary hydraulic power circuit.

Abstract: A cutter blade mounting for a rotary mower of the type having a disc carrying two or more blades. The blades are each mounted on a plurality of arms which are pivotally connected at one end thereof to the disc. At the swingable ends of each arm there is a stepped shaft member. The blades are each provided with an aperture to fit over one of the steps of each shaft; and the disc is provided with a plurality of apertures to fit over a second step of each shaft. A blade is inserted in the space between the swinging end of the arm and the disc. Then the arm is swung toward the disc, the one step of the shaft seating in the aperture of the blade and the second step seating in the aperture of the disc. The arm is then secured by fastening means against swinging which in turn clamps the blade to the disc.

Abstract: A rotary mower of the type having a plurality of side-by-side cutter discs carried on an elongated beam whereby at least the outermost cutter disc of two cutter discs, which are located on the grassward or outboard end of the beam, is provided with paddle means for conveying cut crop inwardly from the standing crop on the grassward side of the mower and depositing the cut crop rearwardly of the direction of travel of the mower. Also at least the outermost disc of the two outboard cutter discs is provided with depending skirt means for sweeping cut crop out from between the underside of the cutter disc and the beam; and the outboard end of the beam is provided with a shoe means for riding the beam over ground obstructions.