Abstract: A hydraulic fluid drive for a land motor vehicle having front and rear drive wheels. An internal combustion engine drives a pair of positive displacement pumps. A first pump is connected to hydraulic motors that drive the front wheels of the vehicle. A second pump is connected to a hydraulic motor that drives a rear steerable wheel of the vehicle. A manually operated control is used to adjust the speed and torque of the motors for the front wheels. A front and rear wheel drive equalizing control operates in response to differences in hydraulic fluid pressure supplied to the front and rear hydraulic motors to equalize the fluid pressure pumped to the front and rear hydraulic motors so as to maintain the torque and speed of the front and rear wheels substantially constant. A foot operated lever is used to operate the control for the first pump for changing the supply of fluid pressure to the front wheel motors.

Abstract: A motor vehicle having a plurality of drive wheels and a steerable wheel. The steerable wheel is rotatably mounted on the frame with an upright steering post. A hydraulic powered transversely movable cylinder is connected to a sprocket mounted on the steering post with a pair of chains. The cylinder is linearly movable relative to a piston and a transverse rod. Adjustable members connect opposite ends of the rod to the frame and hold the rod in linear tension. The cylinder is supplied with hydraulic fluid under pressure from a pump driven by an internal combustion engine. A control valve having a spool connected to the vehicle steering wheel controls the flow of hydraulic fluid under pressure from the pump to the cylinder thereby steering the vehicle.

Abstract: A livestock feeding apparatus having an endless belt supported on an elongated table above a feed bunk by a plurality of stands. The stands are laterally and vertically adjustable to level the apparatus and accommodate different sized bunks. The belt has an upper run that rides on a wood deck secured to the support. An idler pulley and drive pulley engages one end of the belt opposite ends. The belt is retained in driving engagement with the drive pulley by a driven roller engageable with the lower run of the belt adjacent the drive pulley. A motor drives the roller at a speed so that the surface speed of the roller is greater than the linear speed of the belt to maintain the lower portion of the run of the belt between the roller and the drive pulley under tension. A sweep assembly slidably mounted on the wood deck operates to move the material off of the side of the top run of the belt into the bunk.

Abstract: A top unloading silo unloader pendantly supported in a tower silo. The unloader has a material collector moved around the silo with drive structure. An impeller receives material from the collector and throws the material into an out chute which directs the material to a doorway leading to an upright passageway. The drive structure mounted on the outer end of the collector has leading and trailing drive wheels connected with movable mounts to a leveling apparatus. Power is applied to both wheels by separate drive shafts connected to the power transmission for the augers of the collector. The leveling apparatus has a base secured to the collector. Supports pivotally mounted on opposite ends of the base are attached to the mounts for the wheels. A linear actuator connected to the supports operates to concurrently pivot the supports in opposite directions so that the outer end of the collector can be raised or lowered and held in a selected position.

Abstract: A livestock feeding apparatus having an endless belt supported on an elongated table above a feed bunk by a plurality of stands. The stands are laterally and vertically adjustable to level the apparatus and accommodate different sized bunks. The belt has an upper run that rides on a wood deck secured to the support. An idler pulley and drive pulley engages one end of the belt opposite ends. The belt is retained in driving engagement with the drive pulley by a driven roller engageable with the lower run of the belt adjacent the drive pulley. A motor drives the roller at a speed so that the surface speed of the roller is greater than the linear speed of the belt to maintain the lower portion of the run of the belt between the roller and the drive pulley under tension. A sweep assembly slidably mounted on the wood deck operates to move the material off of the side of the top run of the belt into the bunk.

Abstract: A vane air pump is used to selectively supply air under pressure to a tank or evacuate air from the tank. A control valve mounted on the pump has a housing with an air inlet area and an air outlet area. A spool rotatable in the housing to a first position connects the pump and valve passages to supply air under pressure to the tank and a second position connects the pump and valve passages to evacuate air from the tank. A lubricating apparatus having a reservoir for storing oil is connected to the air inlet area of the control valve to draw oil into the control valve and the pump to lubricate the spool of the control valve and bearings and vanes of the pump. An adjustable metering valve controls the flow of oil into the control valve and pump.

Abstract: A top unloading silo unloader pendantly supported in a tower silo. The unloader has a material collector moved around the silo with an automatic leveling and drive structure. An impeller receives material from the collector and throws the material into an out chute which directs the material to a doorway leading to an upright passageway. The leveling and drive structure mounted on the outer end of the collector has leading and trailing drive wheels connected with adjustable mounts to a leveling apparatus. Power is applied to both wheels by separate drive shafts connected to the power transmission for the augers of the collector. The leveling apparatus has a base secured to the collector. Supports pivotally mounted on opposite ends of the base are attached to the mounts for the wheels. A linear actuator connected to the supports operates to concurrently pivot the supports in opposite directions so that the outer end of the collector can be raised or lowered and held in a selected position.