Abstract: A centrifugal blower has an offset between a housing rim sheet and discharge conduit outer wall. A vertical panel attached to the rim sheet guides the feed material into the silo pipe center portion without contacting the conduit outer wall and discharge duct. An air inlet for secondary air flow is provided in this offset to supplement the principal air flow entering through material feed inlet into the blower and to provide an air cushion between the air-borne material and outer wall, as well as the initial portion of the discharge duct.

Abstract: An apparatus to be towed that includes a frame supported, rotatably mounted, pair of furrow forming disks that are arranged to substantially contact each other at the approximate point of entry into the soil and diverge apart rearwardly and upwardly, a pair of rotatable gauge wheels having supports that individually and pivotally connect the wheels to the frame with each wheel being located generally adjacent an outer surface of a disk, a gauge wheel adjustment assembly slidably mounted in said frame and having an equalizer assembly connecting the supports whereby movement of a support and thus wheel in one direction produces the same movement of the other support and wheel in a contrary direction and including an indicator, furrow depth indicating structure having a zero position and spaced indicia for indicating furrow depth and adjustment structure for movably mounting the indicating structure on the frame, and structure for selectively immobilizing the equalizer assembly in a neutral position whereby with

Abstract: A tool bar having a hollow central section and oppositely extending offset hinged wings movable from a generally horizontal, transversely extending working position to a folded transport position. A hydraulic cylinder is positioned in the central section adjacent each wing and has its rod end pivotally connected to a pair of sliders below their center position for an effective lever action about the offset hinge with the sliders substantially spanning the hollow central section. The rod end is also pivotally connected to a pair of links via a slotted connection, with the links also being pivotally connected to the ear of a wing. The sliders reduce wing fall as the cylinder moves the wing from the working position approximately 180.degree. to a transport position on top of the central section or vice versa. The slotted link connection prevents binding of the sliders against the central section during the procedures.

Abstract: A bolt for attaching an earth engaging plow component to a plow frog has an improved head configuration represented by planar surfaces having inclined angular displacement similar to the slope of the truncated cone portion of the plow bolt head.

Abstract: A fully mounted variable width plow of the roll-over type or not in which the tractor hitch links are pivoted about generally vertical axes permitting the hitch limited movement in a horizontal plane, which will allow the adjusted plow to maintain correct alignment under the action of the soil. The plow system includes a plow beam, to the forward end of which a forecarriage is pivotally attached about a vertical axis, and a plurality of interconnected plow bottom assemblies. Actuation of a hydraulic cylinder will result in equal pivotal movement of each plow bottom assembly relative to the plow beam as well as pivotal movement between the forecarriage and the plow beam.

Abstract: A method and apparatus for determining the cooling characteristics of a quenching medium includes a temperature probe having a predetermined thermal mass and conductivity and a temperature sensor affixed to the probe. The probe and sensor are heated to a predetermined temperature and immersed in the quenching medium. The output of the temperature sensor is applied to a microcomputer that has been programmed to monitor the quench rate and to determine whether the quench rate is within predetermined limits at predetermined temperatures.

Abstract: In a centrifugal blower used for conveyance of certain materials, a self-regulating air inlet assembly which automatically adjusts the amount of secondary air flow according to the needs of the blower, thereby supplementing the principal air flow and stabilizing the air flow in the discharge duct.

Abstract: A gear clutch for selective locking engagement of the coupling element with a corresponding gear comprises a rocker reciprocably pivoting on a coupling element and movable therewith. The rocker alternately interlocks with related gears via shifting and spring means operatively interconnected therewith.

Abstract: A dynamic brake mount assembly is disposed within the fluid filled chamber and comprising a brake housing immobilizingly supported by an actuator mechanism housing on one side and by support elements attached to a chamber casing on the other side.

Abstract: An agricultural harvesting combine is provided with a hydraulically positioned reel at the forward end of the combine. One single acting hydraulic cylinder is carried at each end of the reel. Hydraulic fluid is supplied to the cylinders through a rotary flow divider to cause each cylinder to synchronously be displaced to raise both ends of the reel in unison.

Abstract: A harrow that includes a frame having a generally laterally extending rigid beam, a shaft located below the beam, a plurality of spaced disks mounted on the shaft for rotation therewith and a pair of spaced bearing standards for resiliently mounting the shaft on the beam with each standard including a first generally C-shaped spring having an upper portion connected to the beam and the lower portion rotatably supporting the shaft for low disk impact loads and a second C-shaped spring nested within the first C-shaped spring but spaced therefrom, the first spring, as an increasing portion of its C-periphery contacts the second spring, providing therewith a graduated, higher spring rate at high disk impact loads.

Abstract: A rotary valve having a hollow spool with a metering notch rotatable on a sleeve which is pressed into a valve body, the sleeve having an opening selectively and progressively alignable with said notch. A thrust needle bearing is trapped between a shoulder on the spool and a cap threaded into the valve body. A passage freely transmits pressure inside said hollow spool to the side of the bearing opposite said shoulders to reduce the thrust force imposed on said bearing.

Abstract: A composite metallic and refractory article and a method for manufacturing the article is described in which a metallic layer is partially adsorbed within a refractory layer, such as a ceramic layer. The density of the refractory layer increases as it extends away from the metallic layer. The composite is formed by forcing a molten metal under pressure into the pore structure of the refractory layer. Conveniently, a desired internal shape of the finished product is achieved by using a male mold portion to supply the required pressure and to simultaneously form the article having a desired internal cavity. The application of pressure continues long enough to allow the molten metal to become sufficiently adsorbed within the porous refractory layer. When the composite solidifies, the male mold portion is withdrawn from the finished article. In one embodiment the article formed is a piston having a heat resistant ceramic cap combined with an aluminum body.

Abstract: An adjustable drawbar, which is capable of longitudinal adjustment to accommodate implements having power lines of different lengths, having a hitch pin hole at one end to permit attachment of an implement and a plurality of bores through its other end. A bracket having aligned apertures is affixed to the tractor and supports the other end of the drawbar. A pin carried by a bell crank assembly mounted on the tractor is movable by means of a control rod between an adjust position in which the pin is extracted from at least one of said apertures and a hold position in which the pin extends through both apertures and an aligned one of the plurality of bores.

Abstract: A tractor vehicle transmission is provided with a two piston brake where each piston operates in opposite directions. A gear is located adjacent the brake which is located in proximity to a wall of the transmission. Thus upon actuation the brake wall contact the gear causing retardation of the gear, its attendant shaft, and the transmission as a whole allowing simpler shifting of the transmission. The piston force against the brake is opposed by a second piston having a spacer means that contacts the transmission wall upon actuation.

Abstract: An apparatus that includes a frame supported pair of rotatably mounted furrow forming disks, a seed tube extending between the disks for depositing seed in a furrow, a pair of individually mounted and frame supported gauge wheel structures, each structure including a support pivotally mounted on said frame, a wheel located generally adjacent an outer surface of a disk and rotatably mounted on the support, adjustment structure for moving the supports and thus said wheels to vary furrow depth, and a furrow closing and seed soil contact assembly, said assembly including arm structure pivotally mounted on said frame and extending rearwardly to rotatably support furrow closing and seed soil contact structure rearward of the disks and a spring connected to the frame above the arm structure pivot and to the arm structure below and forward of the pivot, the spring biasing the furrow closing and seed soil contact structure downwardly with the same increase of force on the soil with the same increase in furrow depth fo

Abstract: A hoe that includes a transversely extending tool bar, a pivot shaft mounted on the rear and lower portion of the tool bar and extending parallel thereto, a plurality of support arms spaced along the tool bar and pivotally mounted on the shaft, each arm having a forward portion for engaging the tool bar and a rearward portion for rotatably supporting a hoe wheel, a spring extending between each arm and the tool bar to bias the hoe wheel downwardly with each arm forward portion providing a stop with the tool bar to dispose the hoe wheels in the same operative position, and each arm having a hub pivotally mounted on the pivot shaft and including preferably a plurality of elongated grooves extending parallel and adjacent the shaft the full length of the hub and a lower drain in communication with the grooves to remove soil moving between hub and shaft to free the arm and thus hoe wheel for movement by the spring.

Abstract: A wheel that has an alternating tooth structure for improved entry into the soil and movement therethrough for efficient soil lifting and flow, self cleaning and balanced operation. The wheel includes a central hub, four equally spaced spokes extending radially therefrom to a circular flange from which radially extending rearwardly curved, from the direction of travel, teeth extend to work the soil. A tooth of the teeth has a rearward surface that is tapered from one lateral surface to the other and rearwardly to move the soil to one side of the wheel and the adjacent tooth has a rearward surface that is similarly but, oppositely tapered but also rearwardly, to move the soil to the other side of the wheel with the teeth alternating in this sequence around the circumference of the flange.

Abstract: Device to seal slot-shaped openings provided for the passing-through of operating levers which are supported in a pivoting manner on one plane and are either actuated by hand or by foot and which features sealing elements, one of them assigned to each opening.