Abstract: A disk scraper assembly for a furrow opener including a pair of closely spaced disks rotatably mounted on a support in downwardly converging relation relative to each other. The scraper assembly includes a pair of scraper blades supported for lateral-sliding movement independently of and in opposite directions relative to each other between the disks of the furrow opener. Each blade has a generally planar configuration and includes an elongated scraper surface which is adjustably fitted and then fixedly held in place to scrape dirt from an inner face of one of the disks.

Abstract: An economical and effective auxiliary steering system for a vehicle having a relatively low maximum speed in reverse direction. A ground driven pump having an output when the vehicle is going forward is directed to a diverter valve, which valve is responsive to loss of hydraulic pressure in the main steering circuit to direct the said output to the main steering valve. A single spring loaded check valve isolates the main steering valve under auxiliary steering conditions.