Abstract: A mobile land vehicle having an engine arranged to provide motive power to the vehicle and to pump or pumps in a hydraulic work circuit; the engine governed to operate at a given speed. An alternator is also driven by the engine and connected to provide alternating current to high intensity discharge lamps which are capable of operation only between a relatively narrow range of current frequencies. The drive means to the alternator produces a frequency near the high end of said range when said engine is at or near its governed speed and the frequency approaches the lower end of said range as the engine speed is lugged down under full load.

Abstract: Incorporation of a spacing member in an axle supported bolster pivot assembly provides wear compensation means and allows the utilization of interchangable inboard and outboard thrust bushings and wiper seals.

Abstract: A disc brake protective cover plate is mounted to a radial flange on a tractor loader wheel axle housing which is used for mounting multiple air-over-hydraulic, external drive caliper disc brake units thereto. The disc brake protective cover plate is in the form of a canister which has an open end slipping over the disc brake units into a hub of the tractor wheel. The cover plate protects feeder brake lines which are connected to a main disc brake unit and run externally alongside the radial flange to two servo disc brake units.

Abstract: A transmission neutral lever lock is used to lock a transmission direction control lever in a neutral position by swinging a latch into a camming detent connected on a bearing sleeve which supports the transmission direction control lever.

Abstract: A hydraulic system for a vehicle having an engine (10) governed to run within a predetermined speed range; the engine (10) arranged to drive a motive power train (11), a charge pump (14), a variable displacement pump (12) and a fixed displacement pump (15). The variable and fixed pumps (12 and 15) are arranged to supply hydraulic fluid pressure to a work circuit (26). A flow signal is created by passing the output from the charge pump (14) through an orifice (40), which signal is routed to a speed valve (46) which directs fluid to a control ram (78) to reduce the displacement of the pump (15) during a predetermined intermediate portion of said speed range.

Abstract: A laminated composite structure having a rigid honeycomb core and upper and lower fabric skin layers is provided with a reservoir layer of randomly oriented fibers, such as chopped glass or chopped mat, between the core and the top skin to retain the resin during lay-up so that the top skin may be laid on dry and become impregnated upon compression of the laminate. A reservoir layer may also be used between the core and the bottom skin to improve the bond therebetween.

Abstract: A circuit for controlling pitch and tilt of a dozer blade in which two cylinders are connected between the dozer blade and the dozer push arms. One cylinder only is extended and retracted to achieve tilt, and both cylinders are operated in unison to achieve pitch with divider valves assuring that equal volumes of hydraulic fluid reach each cylinder and are expelled from each cylinder. Extension and retraction is selectively determined by a directional control valve, while a selector valve determines whether both cylinders or only one cylinder is connected with the directional control valve.

Abstract: A structure for the lower hinge and boom cylinder pivot of an articulated loader having a tube extending across and secured to the front frame of the loader with stub shafts secured in each end of the tube and protruding therefrom to act as pivotal mountings for the boom cylinders. The lower hinge has upper and lower plates secured to the cross tube to form a box section to provide strength and rigidity.

Abstract: A valve mounting plate is positioned over an access port in the front portion of the chassis of a large earthworking vehicle. A large hydraulic valve assembly is attached to the inboard surface of the valve mounting plate so that the valve resides in an accessible interior frame member compartment.

Abstract: In an automatic tailgate of a dump truck a continuous single cable extends from a left side gate lever arm to a right side gate lever arm after passing below the dump body of the truck and being movably secured to the truck frame. When the dump body is in a dumping mode the continuous single cable will allow equalization of tailgate lifting forces.

Abstract: A disc brake pad retractor includes a resistance member carried on a rod positioned between a pair of brake pads. The resistance member will be moved laterally as the pads wear. A spring loaded housing is associated with the resistance member and will serve to urge a brake pad away from the rotor when the disc brake is disengaged.

Abstract: A basket lift apparatus for a cotton harvester including a pair of linear hydraulic motors having floating axially unrestrained housings is provided with a variable length guide tube assembly pivotally connected between the respective cylinder housings to prevent rotation thereof.

Abstract: A two-piece fender for a tractor loader, wherein one piece, which is located in the vicinity of the engine compartment, is tiltable laterally outwardly and downwardly therefrom to permit easier access to the engine for maintenance and servicing, after an engine compartment cover covering the engine is opened for gaining access to the engine compartment.