Abstract: The disclosure is of a haymaking machine with a rotary rake head and a control mechanism for adjustable tool-carrier arms which are mounted for pivoting in support bearings which are wedged between two covers, one of which is situated above the control mechanism of the tool-carrier arms and is fast with the drive hub of the rotary rake head, and the other of which is situated below the said control mechanism of the tool-carrier arms.

Abstract: A multi-propeller propulsion system for model aircraft having a single engine and positive driving connections between the engine and each of the multiplicity of propellers. The positive drive may include toothed pulleys and serrated belts and gearing for example.

Abstract: In a rotary separator, cylindrical threshing, frusto-conical separating, and centrifugal fan sections are arranged coaxially and in tandem. A fixed grate including threshing and separating portions surrounds and generally conforms to a rotor profile. A frusto-conical collector housing encloses the forward part of the separator and feeds threshed and separated grain to a grain cleaning unit, the screen elements of which, along with the collector housing, rotate concentricaly with the grate while at the same time reciprocating axially. A stationary cylindrical housing surrounds the cleaner unit and clean grain and tailings pass centrifugally from the cleaner screens to separate annular channels, to be swept around the inside of the housing by paddles moving with the cleaner elements to tangential discharge points near the top of the separator for transfer to clean grain and tailings return augers respectively.

Abstract: A cutterbar for a crop harvesting machine having narrow pitch guard prongs and knife points. The guard prongs are formed on guard sections, and the knife points are formed on knife sections, wherein the guard sections include a plurality of prongs and the knife sections include a plurality of points and symmetrically arranged mounting holes allow mounting the guard sections on a conventional bar back. The knife sections include form-beveled and serrated knife edges, together with fastener assemblies for connecting the knife sections to the knife back such as to permit easy replacement of damaged knife sections. A drive assembly for the knife bar applies reciprocating action to the knife bar. Feeder shields protect the drive assembly and enhance the feed of crop to the collecting auger.

Abstract: This invention relates to a round baler for windrowed fibrous agricultural materials in which the bales are formed by a two-part frame having a generally cylindrical baling zone therein defined by side wall members on the frame and roller members extending between the side wall members and distributed around the frame. The frame includes a conventional pickup and conveying apparatus to move the agricultural materials from the ground into the entrance of the cylindrical baling zone. A suitable drive means, adapted to be coupled to a power takeoff of a draft vehicle or mounted on the baler, rotates the roller members to form a bale of the agricultural materials which are fed to the baling zone by the pickup. The frame parts are separated through hydraulic actuators to open the baling zone and deposit the round bale therefrom.

Abstract: A toy bank includes a generally cylindrical, transparent upper housing portion having a slot therein for receiving tokens such as money or the like. A lower storage cavity or housing portion is defined by a shell and a transverse, generally upwardly directed concave surface having at least one aperture therein in communication with the upper housing portion. A manually operable propulsion device mounted on the transverse surface engages the token for directing the tokens through the aperture into the lower housing portion. The propulsion means includes a hand crank connected by a gear train to a propeller having its blades extending upwardly through the transverse surface to engage and deposit the tokens in the lower housing portion.

Abstract: The element is adapted to be fitted as an annular band around a tooth and to be secured to a dental appliance to hold the same in position. It includes a strip metal element having two end portions, which are adapted to overlap in the annular band, a first slide-snap fastener part, which is carried by one of the end portions and includes a tunnel member defining a tunnel passage extending longitudinally of the strip metal element, and a detent spring secured to the tunnel member and extending longitudinally in the passage, a second slide-snap fastener which is carried by the other of the end portions and includes a plurality of barblike oblique detent teeth spaced apart in the longitudinal direction of the strip metal element and movable relative to the first fastener part in a closing direction into the tunnel passage.

Abstract: A model racing car having front wheels, rear wheels, drive motors and a radio control receiver and of the front drive type that is adapted to control a large steering angle of the front wheels by means of the output of the radio control receiver, wherein a plurality of the drive motors with reduction gear devices, mounted on each of the front wheels for driving the front wheels independently are caused to rotate in an interlocking fashion as a block by the output of the radio control receiver, whereby the steering angle of the front wheels is controlled.

Abstract: A crop height sensing assembly for use in a control system that automatically adjusts the depth or vertical elevation of a mechanical corn detasseling device in response to the height of a corn plant having a tassel with adjacent leaf portions. The detasseling device is adjustably carried on a portable frame for movement along a corn plant row, and the control system includes a hydraulic cylinder assembly for raising and lowering the detasseling device, and circuitry for actuating the cylinder assembly. The crop sensing assembly includes a rock shaft extended tranversely of the portable frame, a support for the sensing assembly carried on the frame forwardly of the detasseling device for movement therewith, a plurality of dependent sensor rods axially spaced on the rock shaft and rockable therewith in response to contact with the corn plant leaf portions, and a signal assembly responsive to the rockable movement of the shaft to produce a sensing signal for operating the actuating circuitry.

Abstract: An automatic depth adjusting control system and method for controlling the vertical position of a pair of corn detasseling devices adjustably mounted on a farm implement for removing tassels from two adjacent rows of corn plants. The control system includes a parallel link system for supporting the corn detasseling devices, a hydraulic cylinder connected to the parallel link system for controlling the vertical movement thereof to raise and lower the pair of corn detasseling devices, and a crop sensing unit positioned forwardly of each of the detasseling devices for detecting the height of the corn plants in a corresponding corn row. Each crop sensing unit provides for the transmission of either a raise signal or a lower signal, in response to the height of the corn plants in an associated row, to electrical circuitry and then hydraulic circuitry for actuating the hydraulic cylinder.

Abstract: An improved root crop harvester having a narrow and compact processing chassis adapted to simply and easily receive header assemblies of differing capacities. The header assemblies include a transverse roll conveyor for gathering roots received from the digger wheels into a stream for discharge through a central opening in the transverse conveyor to a fore-and-aft extending roll conveyor carried by the processing chassis. The fore-and-aft roll conveyor is inclined upwardly from front to rear to increase the scrubbing and tumbling action and is also provided with a reversing roll section at its rearward end to discharge the roots to the side. The fore-and-aft conveyor is also sloped across its width at its rearward end to aid in discharging roots transversely to the roll conveyor length. The conveyors on the processing chassis are carried between the support wheels to reduce side drafts, minimize wheel slippage in wet field conditions and improve transport maneuverability.

Abstract: A beta-titanium alloy wire is used as the force-imparting component in orthodontic appliances. The alloy provides up to a threefold improvement over 18-8 stainless steel wire in load deflection rate and a twofold increase in maximum elastic displacement while providing a low modulus of elasticity and optimum low level force magnitudes. The wire also finds utility as ligature wires, as clasps and related structures in orthodontic and prosthetic appliances and as surgical arch bars for jaw fractures and the like.

Abstract: A drilling apparatus for the preparation of bone cavities includes a plurality of drills which are simultaneously driven in opposite direction with the cutting surfaces of each drill overlapping the cutting surfaces of at least one other drill to provide intersecting bone cavities. The drills may be driven by gearing located within the drill head or by gearing located in an attachment suitable for connection to a conventional drill head having a single output drive. The drills may be disposed along a straight or curved line or may be disposed in a triangular relationship with the axis of rotation of one of the drills being transversely movable relative to the axis of rotation of another drill.

Abstract: The disclosure is of a mower comprising cutter discs each driven from beneath by a transmission in a housing containing lubricant and made to be fitted onto a support plate by a displacement perpendicular to the plane of the plate and then secured by fixing elements which extend perpendicularly to said plane, the housings being interchangeable and lubricant-tight irrespective of the presence of the transmission means.

Abstract: A rotary mower is provided with a housing penetrated by a shaft mounted on a vertical axis for rotation relative to the housing. A cutting blade is fixed to the shaft for rotation relative to the housing, and the shaft and the cutting blade are driven by a prime mover connected to the shaft outside the mower housing. According to the invention, a mulching blade is mounted on the shaft above the cutting blade and within the housing for rotation relative to the shaft and the housing, and a transmission operative connects the motive means and the mulching blade for rotating the later coaxially with and in a direction opposite from that of the cutting blade.

Abstract: A harvester for sugar cane sticks or similar crops having a feed roller with feed elements extending lengthwise of the roller to successively engage the sticks on rotation of the roller, to feed the sticks in a direction at right angles to the axis of rotation of the roller. At least one of the feed elements being in the form of a resiliently deformable hollow structure of elastomeric material.

Abstract: An aquarium life support system comprises a tank with transparent walls with a watertight bottom having a central drain opening and additional openings through which air supply tubes and a heating device are extended. A movable support below the tank bottom includes an air pump, gang valves for the air supply tubes and a control unit for the heater. The construction is such that the bottom portion normally hides the pump, air valves and heater control together with a drain line in communication with the central drain opening. A single power supply cord extends from the life support system to an appropriate power source.

Abstract: A mechanized harvesting machine particularly suitable for picking or harvesting vegetables such as peppers and tomatoes uses a single rotating helical guide member carried on a shaft aligned longitudinally above the row of plants to thread its way through the plants with minimal disturbance. Arcuate picking elements are attached between the helical guide and the shaft for pushing and pulling the vegetables or other crops to be harvested from the plant, as the helical guide member is rotated through the row of plants. The guide member is operated parallel to the ground and turns in a single direction, leaving the plants in a relatively undisturbed condition after they have been picked so that the plants may be used to grow a subsequent crop. The harvesting machine includes conveyor belts located on opposite sides of the helical guide member for catching the vegetables after they have been picked to convey them to a convenient storage bin on the machine.

Abstract: An aerodynamic toy having a central portion of circular configuration and a peripherally connecting rim portion. The central portion has a flat top surface while the connected rim portion has a rounded surface. The flat top surface of the central portion is contiguous with the rounded edge portion. The toy is constructed of a soft, flexible, foam material of substantially uniform density.

Abstract: A tractor drawn and powered impeller mower-conditioner includes a transverse cutter assembly comprising a series of side-by-side rotating cutting disks. An impeller rotor with free-swinging flails is mounted above and slightly to the rear of the cutter bar with its axis of rotation parallel to the cutter assembly. A hood over the rotor includes a confining forward conditioning plate conforming fairly closely to the rotor periphery to form a conditioning zone and a rearwardly extending deflecting and windrow forming portion. The rotor is disposed and rotated so that the flails intercept cut material delivered rearwardly by the cutter assembly and carry it inside the hood up and over the rotor through the conditioning zone to be discharged rearwardly into a windrow.