Abstract: A rotary combine and a method for threshing and separating crop are disclosed which utilize separate rotary threshing and separating assemblies. Both assemblies are in the form of cylinders and the separating assembly is located transversely and rearwardly of the threshing assembly. Crop is introduced along a plane substantially tangential to the lower entrance portion of the threshing assembly, conveyed by guide vanes to an end portion of the threshing assembly, passed from the threshing assembly axially into the separating assembly and conveyed by a series of further guide vanes to the rearward portion of the separating assembly where the crop residue exits from the combine.

Abstract: A method and apparatus used to deposit a carbide layer of metal material on blade material. The apparatus comprises a feed means that continuously feeds blade material to a metal deposition means which continuously deposits the metal layer on the blade material. A drive means is adapted to drive the blade material through the metal deposition area.

Abstract: A rotary switch valve, particularly for use in a vehicle where the operator may wish to face in either direction such as on a tractor where implements or attachments may be mounted on either the front or rear ends. The valve consists of at least two passageways for allowing passage of hydraulic fluid, which passageways pass through both a casing and a spool, relative rotational movement being allowed between them. Upon 180.degree. relative rotational movement, the passageways feed fluid from the outlet ports in a sense opposite to that when the spool and casing were in their original positions. The steering system of the vehicle, therefore, will continue to direct the vehicle in its normal sense.

Abstract: A drive system for a pull-type swather or windrower in which a sensing device senses the side-draft of the swather under operating conditions. The sensing device indicates to a compensating device which is operable from the sensing device whether to increase, decrease or leave unchanged the rotational speed of drive wheels which are provided on the swather and powered by a power plant. The drive wheels act to keep the swather in an effective cutting position substantially transverse to the longitudinal axis of the tractor.

Abstract: A small pump is connected externally of the differential housing of an axle assembly, picks up oil from the housing and pumps it through an external filter. This cools and cleans the oil and the oil may be routed to the outer bearing areas of the half shafts for lubrication. The oil flows by gravity through the axle casing back to the differential housing and, if desired, an oil cooler may be incorporated within the system.

Abstract: A tillage implement is disclosed which facilitates transporting the implement from one field of operation to another. The implement comprises a stabilizer bar located behind the point where the implement may be "winged-back". In so doing, transport problems are reduced and the number of frame sections of the implement may be increased without increasing the width or height of the transported vehicle.