Abstract: A long wearing deep tillage sweep includes a central point member having a leading tip and attached to a shank at an angle to the horizontal of approximately 30 degrees. A pair of wings having the shape of a parallelogram are fixed to the lower, forward portion of the point with the sides of the wings parallel to the forward direction of travel and with the leading and trailing edges extending outwardly from the member and parallel to the surface of the ground when the shank is in the normal field-working position. The top surface of the wings has a shallower angle than the point surface, which, together with the horizontal leading and trailing wing edges, reduces soil disturbance. The wings are closely adjacent the tip of the point member so that the angle of the resultant force on the sweep closely approximates that of a straight point alone and the depth of tillage is more consistent than tools having wings offset a greater distance from the leading tip.

Abstract: A caliper is provided to be used with an electronic wheel balancer to measure both the diameter and width of a wheel assembly. The caliper includes a pair of pivotally connected arms which are movable between a spread apart position in which the caliper can measure wheel assembly diameter and a crossed position in which the caliper can be used to measure wheel assembly width. Each arm includes a base portion and a measuring arm extending from the base portion. A measuring arm base is defined between the measuring arm and the caliper arm base. A first set of measuring marks are formed in the caliper arm base for use in measuring the wheel diameter. A second set of measuring marks are formed in the measuring arm base for use in determining wheel width. The second marks are calibrated to account for the width of the metal forming the wheel rim. The caliper arm base includes a pointer, positioned opposite the measuring arm. The pointer points to the second set of marks to indicate the measured wheel width.

Abstract: A linear hydraulic cylinder (11) is provided of the type having a cylinder barrel (13;113) and a piston (21;121) reciprocally disposed in the barrel. There is a main piston seal member (55) which seals between the piston and an interior surface (37) of the cylinder barrel. Disposed adjacent the piston seal is a wear ring (61;161) defining a substantially cylindrical outer surface (67) bounded by a pair of substantially square corners (66). A loader member (69) biases the wear ring into sufficiently tight engagement with the interior surface of the barrel to prevent passage of contaminant particles between the surface and the wear ring. The result is substantially reduced cylinder "drift" in the presence of contaminant particles.

Abstract: A double spring reset standard and spring bracket therefor particularly useful for intermediate tillage operations at depths of approximately 13 inches wherein high average draft loads are in the range of 2000 pounds. The moment arm that the springs must resist to keep the standard from tripping during normal operation is minimized by bringing the draft force line closer to the standard pivot. The spring bracket which must be able to resist extremely high torsional stresses is fabricated from 0.375 inch thick metal blanks in a single cold die operation and includes offsets and specially designed edge flanges to reduce edge stresses at the offset bends.

Abstract: The inner annular surface of a load ring includes a concave contour such that when pressure is applied to the center of the outer surface the elastomer material will flatten out and cause oppositely disposed feet to kick up and radially outwardly and in turn apply increased pressure to backup rings engaging the cylinder wall. The inner surface of the load ring includes oppositely disposed ramp surfaces which slope radially outwardly and towards each other such that fluid pressure on the backup rings or pressure from the load ring feet will move the backup rings into tighter engagement with the cylinder wall for improved sealing and scraping action.

Abstract: A sheet metal plate with two keyhole-shaped slots supported on a post connected to a beam on an implement hitch for supporting hydraulic hoses. An enlarged end of the slot receives the conventional hose end coupler, and the narrow portion of the slot captures the groove in the coupler. The length of the slot is selected to hold the desired number of couplers. Pairs of upright slots are provided so that hose pairs may be kept together. The hose couplers are easy to slide into and out of the storage device, which is conveniently located in an easily accessible spot on the implement hitch. The device prevents hose tip contamination and facilitates orderly storage and identification of hose pairs.

Abstract: A tractor-drawn plow is carried at its left front end on a tractor via vertically shiftable hitch means and at its right front end on a furrow wheel linkage means providing for raising and lowering of the frame among transport, open-up plowing and normal plowing positions. The hitch means and furrow wheel linkage include separate hydraulic motors of the two-way type, and these are connected hydraulically in series, with provision for re-phasing, to insure substantial leveling of the frame during raising and lowering movement of the frame. Provision is made in the connection of the hitch motor to the hitch means for enabling limited retrograde movement of the hitch motor piston to a position covering the re-phase port after the hitch motor has extended to fully raise the frame. Further provision is made in the furrow wheel linkage enabling lowering of the frame to either open-up plowing position or normal plowing position by retraction strokes of the same length of the furrow wheel motor.

Abstract: A tractor-drawn plow is carried at its left front end on a tractor via vertically shiftable hitch means and at its right front end on a furrow wheel linkage means providing for raising and lowering of the frame among transport, open-up plowing and normal plowing positions. The hitch means and furrow wheel linkage include separate hydraulic motors of the two-way type, and these are connected hydraulically in series, with provision for re-phasing, to insure substantial leveling of the frame during raising and lowering movement of the frame. Provision is made in the connection of the hitch motor to the hitch means for enabling limited retrograde movement of the hitch motor piston to a position covering the re-phase port after the hitch motor has extended to fully raise the frame. Further provision is made in the furrow wheel linkage enabling lowering of the frame to either open-up plowing position or normal plowing position by retraction strokes of the same length of the furrow wheel motor.