Abstract: A hinge mechanism for a door which includes a support within the door opening and away from the door jamb. In the closed position of the door, parts of the mechanism including a hinge member are located between the support and the jamb. A door is pivotally mounted on the hinge member at its distal end. As the door moves from the closed to an intermediate position the pivotal mounting of the door on the hinge member follows an arcuate path outwardly and away from the door jamb. When the mechanism reaches the intermediate position the door can be swung on its pivotal connection with the hinge member to a fully open position.

Abstract: The hydrostatic control system for an articulate loader provides an improved method for controlling the output of a hydrostatic drive unit for a front end loader, with cooperative connecting means disposed between a pair of axially aligned drive pumps to provide selective output of one or both pumps as dictated by operation of the control mechanism.

Abstract: An air cleaner system for an internal combustion engine located in a vehicle engine compartment. The system includes a cubic air filter device located beside the engine in the engine compartment which is arranged to draw air from outside the vehicle, pass it through a filter cartridge in the air filter device, and through a flexible conduit connecting the air filter device with the carburetor.

Abstract: A straddle type material handling industrial truck providing an approximately constant force on the traction and braking wheel through pivotal mounting of the drive unit augmented by spring loading. The spring loading is accomplished by a spring mechanism which includes an upper spring bracket having a downwardly extending stop portion and mounted on the frame, a lower spring bracket having an upwardly extending stop portion and mounted on the drive unit, and a compression spring extending between the spring brackets, the stop portions being located within the compression springs and spaced apart a predetermined amount to limit the upward pivotal movement of the drive unit.

Abstract: An improved arrangement for the brake system of a hydrostatic loader comprises a drive motor having an output shaft extending outwardly from both ends of the motor, drive means operatively connecting the output shaft to the axle of the loader at one end of the output shaft, the opposite end of the output shaft carrying a valve port block thereon, the valve port block mounted rigidly adjacent one end of the motor. A disc brake mechanism is then mounted on the output shaft adjacent the valve port block to complete the improved brake system arrangement.

Abstract: An emergency hydraulic system for a vehicle having a hydraulic steering mechanism normally supplied by an engine driven pump. An electric motor driven pump supplies the steering mechanism under emergency conditions. The electric motor driven pump is inoperative during normal operation of the engine but if the engine ceases to operate it comes on responsively to the occurrence of a predetermined condition in the hydraulic circuit. In order to prevent the electric motor driven pump from operating during engine starting a relay is provided having a normally open switch in circuit with the motor. The relay is operated by a normally open engine condition switch which is arranged to close when the engine is running. The relay holds itself in, thus preparing the electric motor for operation should the predetermined condition occur in the hydraulic circuit of the steering mechanism.

Abstract: A brake and transmission control system for a vehicle having a hydraulically controlled power shift transmission and a spring applied hydraulically released parking brake. Both the transmission control and the brake are interconnected hydraulically with the operator's seat whereby when the operator leaves the seat the transmission is automatically shifted to neutral and the parking brake is automatically applied.

Abstract: A pivot joint having an elastomeric sealing member between a pivot pin and a surrounding structure, including means for preventing the sealing member from extruding between the pivot pin and surrounding structure when lubricant is inserted into the joint under pressure.

Abstract: A corner tooth construction for a loader bucket in which a corner tooth is welded to a vertically disposed corner reinforcing member and a cutting edge member as an integral part of the bucket structure. The corner tooth can be readily installed or replaced without affecting the constructional welds of the bucket and without impairing the integrity of the bucket.

Abstract: A reciprocating fluid device is provided in which dynamic stresses in the weld between the cylindrical tube and the base thereof are reduced by prestressing the tube proximal to the weld prior to welding.

Abstract: A system which normally prevents an attempt to start an engine while the engine lubricant pressure is high. However, in an emergency it is possible to crank the engine even though the lubricant pressure is high by operating the start switch and main switch in the reverse of the usual sequence.

Abstract: A method for connecting together a tractor module and an implement module to form a complete vehicle . The tractor module includes a first coupling portion and a source of pressurized hydraulic fluid. The implement module includes a frame, a second coupling portion on the frame, a hydraulically operated movable structure on the frame and legs arranged to be selectively located between the hydraulically operated structure and the ground for supporting the implement module at rest. In carrying out the method the tractor module is moved adjacent the vehicle module so that the two coupling portions are in confronting relation. The source of pressurized hydraulic fluid on the tractor module is connected to the hydraulic actuators for the hydraulically operated structure on the implement module and the frame of the implement module is thereby moved relative to the hydraulically operated structure to get the two coupling portions in position to be joined.

Abstract: A dump body vehicle module for connection to a tractor module to form a complete vehicle. The dump body module includes a horizontally disposed frame with wheels adjacent one end and a coupling portion adjacent the other end for connecting it to a tractor module. A dump body is pivotally mounted on the frame for movement between a carrying position and a dumping position and hydraulic actuators are provided to move the dump body between the two positions. A pair of leg members are pivotally mounted on the dump body for movement between three positions, one a leg storage position, another for supporting the module on the ground, and the third for supporting the dump body in an elevated position relative to the frame.

Abstract: A retractable rock guard for the dump body of a truck, comprising a protective structure which is normally in the upright position at the front of the dump body. The protective structure is pivotally connected to the dump body but ordinarily is secured in the normal upright position by detachable connectors. However, it can be readily detached and then the protective structure can be retracted by raising the dump body to a dump position in the usual manner. The upright protective structure is constructed and arranged so that its center of mass passes through a vertical plane intersecting its pivotal connection on the dump body under these circumstances and when this occurs the proctective structure moves to a horizontally disposed retracted position on the truck body.

Abstract: A fluid operated linear motor of the piston and cylinder type. The piston is secured to a rod by a threaded connection and the mating threads are proportioned and dimensioned so that pivotal movement available in the threaded connection is enough to compensate at least in part for manufacturing tolerances and eccentricities and prevent or reduce abnormal distribution of lateral forces by the piston on the outer cylinder.

Abstract: A steering system for a vehicle having a hydraulic steering mechanism, and including an accumulator for maintaining a supply of pressurized hydraulic fluid to the steering mechanism. The hydraulic fluid for the steering mechanism is supplied in some circumstances by a hydraulic pump which operates only when the vehicle is moving. Two valves are connected in series and arranged to discharge the accumulator when both valves are open, one of the valves arranged to be opened when the engine stops and the other arranged to be opened when the vehicle driven pump stops.

Abstract: A combined brake and steering system for a vehicle having hydraulic braking and hydraulic steering. A single pump is utilized to supply both the brakes and steering. Two priority valves are arranged to assure that the brakes take precedence and receive an approximately constant flow of hydraulic fluid subject to a maximum pressure. The steering mechanism also normally receives a constant flow, subject to a maximum pressure which usually is different from the other maximum pressure.

Abstract: A combined brake and steering system for a vehicle having hydraulic braking and hydraulic steering. A single pump is utilized to supply both the brakes and steering. Two priority valves are arranged to assure that the brakes take precedence and receive an approximately constant flow of hydraulic fluid subject to a predetermined maximum pressure. The steering mechanism also normally receives a constant flow, subject to a different maximum pressure. The fluid from the steering mechanism is recirculated through a reservoir back to the pump. The fluid from the brakes is recirculated to the pump without going through the reservoir.

Abstract: An elevator mechanism for an elevating scraper in which the sprockets which drive the elevator chains are located immediately adjacent the ground in the loading position.

Abstract: An elevating scraper having a four-wheeled tandem running gear. The elevator is divided into parallel loading paths to accommodate a drive line between the paths. Thus the scraper is particularly suited for towing by a tractor having a power takeoff at the rear. The construction also features a knock-down assembly for minimum utilization of shipping space.