Abstract: A steering and drive system for toy vehicles is disclosed. Independent gear trains for wheels on opposite sides of the toy vehicle are utilized in combination with a single reversible motor to either rotate all wheels in the same direction to move the vehicle in a straight line or, by reversing the direction of the motor, to rotate wheels on opposite sides of the vehicle in opposite directions causing the vehicle to turn. Wheels on one side of the vehicle are connected to a main gear and the direction of rotation of such wheels is completely dependent upon the polarity of an electric power source applied to the motor. Wheels on the opposite side of the vehicle are indirectly connected to the main gear by a movable control gear which is urged to engage either an auxiliary gear or a second side drive gear so that the wheels rotate in only a single direction regardless of the direction of the motor.

Abstract: A ball pitching machine including a mainframe, a subframe pivotally attached to and selectively tiltable with respect to said mainframe, and a bracket pivotally attached to and selectively pivotable with respect to said subframe. The subframe supports a drive and attached drive wheel while the bracket supports a radially aligned pressure wheel. The bracket includes an A-frame member and the pressure wheel is rotatably supported at its apex. A guide tube having a discharge end disposed intermediate the drive wheel and the pressure wheel directs a ball in contact with the rotating drive wheel. The machine can pitch balls of various diameters such as baseballs and softballs since the spacing between the drive wheel and the pressure wheel is selectively adjustable by pivoting the bracket with respect to the subframe. Also, the amount of pressure applied by the pressure wheel determines the speed at which the ball is ejected from the machine.

Abstract: Water content sensing and informing system for a disposable diaper consisting of water permeable inner sheet, water absorber, and water impermeable outer sheet, comprises at least one pair of metal layers, one surface of one layer being covered with an electric insulating layer, formed between the water impermeable outer sheet and the water absorber, a detector for detecting water content absorbed in the diaper, and an informing mechanism for informing the detected result. The pair of metal layers is isolated with constant distance to each other and extended in the longitudinal direction of the diaper. The pair of metal layers is formed in a thin layer by a lamination or vacuum evaporation of a metal leaf. The informing mechanism is selected from a visual, auditory, remote informing device using an oscillator and receiver, or combination of these.

Abstract: A ground working implement consisting of a hitch, a center section pivotally secured to the hitch for rotation about a transverse axis and a two part wing section pivotally secured to each side of the center section for rotation about a longitudinal axis, with the two parts joined on a diagonal axis, a transverse member across the central region of the hitch, a member pivotally secured between the wing section and the end of a bar such that the rotational movement of the wing parts about a diagonal axis, the rotation of the complete wing about a longitudinal axis, and the rotation of the hitch about a transverse axis, is permitted during ground cultivation, and when the wing section is raised vertically for transportation purposes, the hitch becomes rigid with the center section and movement about all axis is locked.

Abstract: A vibratory plow blade having a tapered leading edge, a trailing edge, and a tapered bottom edge wherein the plow blade is configured such that its longitudinal axis regresses or is arcuately angled away from the towing vehicle. The tapered leading edge of the plow blade includes an upper straight cutting section and a plurality of forward angled serrations along its length which provide for downward and upward cutting and fracturing of the soil with each successive stroke of the blade during vibratory action. The guide chute for the cable is mounted to the trailing edge at a substantial bend radius for reducing the flexing required of the cable and reducing the weight of the guide chute. The construction permits close proximity between the plow blade and guide chute for providing increased chute protection and a reduction in the chute frictional drag thereby leaving more vibrational energy for soil displacement.

Abstract: An eye shield device protects one or both eyes of an individual during medical treatment, or while the individual is comatose, semi-comatose, or under anesthesia. The eye shield includes at least one soft, pliable air-filled cushion member of thin plastic material, sized and shaped to fit within the cavity formed by the orbital bone structure around the eye. During use, the cushion member is placed upon the closed eye and is secured in place by the eye shield support removably affixed to the head of the individual. The cushion member or eye pillow is formed with a pleated side edge for expansion of the air in a "bellows" effect at the periphery to redistribute pressure on the eye to the perimeter and reduce direct pressure on the eye globe. The cushion member is also formed with a central cavity on the side placed upon the closed eye to accommodate the curvature of the eye ball.

Abstract: A row crop cultivator for use in farming which includes a pair of weeding disks associated with each cultivator unit of which a plurality is ganged together in series. Each weeding disk is bearingly supported by a vertical shaft which is received by a cross bar in a manner which permits the shaft associated with the weeding disk to be adjusted as to depth and angular orientation. Such changes in the vertical shaft for the weeding disks are directly transferred to the weeding disk itself. Disposed adjacent the uppermost point of the shaft is a degree gauge plate and adjacent thereto is a depth gauge structured out of angle iron. As the farmer makes adjustments as to angular orientation and depth of one weeding disk, he need not be concerned with the specific values until the optimum depth and angular orientation have been found for the particular field being cultivated.

Abstract: In a compressed-air weapon, for the simplification of original production and repair and for the simplification of stockholding it is proposed that the trigger, the counter-hook-engagement system, the trigger return spring and the trigger safety catch system if provided are combined into one prefabricated construction unit which can be united as a whole with the cylinder tube and the stock.

Abstract: A traction splint for attachment to a person's leg for example and having an elongate U-shape frame. The side arms of the frame are telescopic and an air pump is connected to the frame so as to be operable to cause simultaneous extension of the two arms. A foot retaining device is attached to the arms adjacent the base of the U and a thigh ring is releasably securable to the movable sections of the two arms so that extension or contraction of the arms causes variation in the distance between the thigh ring and the foot retaining device. The thigh ring is completely separable from the arms and retaining structure is operable to prevent that separation. Also, the thigh ring can be opened at one side to allow it to be moved laterally over a person's leg.

Abstract: There is described a furrow opener apparatus capable of operating in a furrowing mode and a carrying mode. The apparatus consists of a double acting hydraulic cylinder having one end connected to a furrow opener drag arm and the other end connectable to a drill rig. It incorporates a pressure cushioning system consisting of at least one pressure absorber and hydraulic lines communicating through a mode valve with both the thrust and draw sides of the double acting cylinder. It further communicates through a single or double acting hydraulic valve to the hydraulic pump and reservoir of an associated prime mover such as a tractor. The mode valve is hydraulically connected to both the thrust and draw sides of the double acting cylinder. In a first mode the mode valve is hydraulically connectable to the pressure cushioning system and in a second mode hydraulically connected through a double acting hydraulic valve to the hydraulic pump and hydraulic reservoir of the prime mover.

Abstract: A reversing and adjustment mechanism, especially for a reversible plough adapted for hydraulically adjustable furrow width and hydraulic reversing of the plough, wherein the reversing and adjustment mechanism comprises a hydraulic cylinder (8) with a "hydraulic memory" for adjustment of the furrow width. The oil chambers on both sides of the ordinary piston (15) in the adjustment cylinder (8) communicate with a reservoir (24) via two pilot-controlled check valves (26, 25) with open passage toward the adjustment cylinder (8) and a second direction-control valve (10). The chamber (31) in the adjustment cylinder (8) between the rear head and a freely movable piston (17) communicates on the one hand with a hydraulic cylinder (7) for reversing the plough, preferably with the rod end thereof, via a first check valve (14) with open passage toward the reversing cylinder (7), and on the other hand communicates with the reservoir (24) via a flow-control valve (28) and a first direction-control valve (9).

Abstract: A gun is provided which is capable of firing a variety of projectiles driven by a variety of propellants. The barrel may be readily disconnected from the stock of the gun. The breech is designed to receive a standard gauge shotgun shell. Inserts are also provided with the same general configuration of a standard gauge shotgun shell, and when placed into the breech, allow the gun to fire a variety of projectiles. Inserts are provided which allow the gun to fire both center fire and rim fire rounds through a bore in the insert. A rocket insert is also provided which contains a smooth bore and is capable of firing rockets. An inertial firing pin is provided, which operates in conjunction with a floating breech plate. The floating breech plate is used in the firing of compressed gas bottles. A dual action spring drive is provided which is used to provide the necessary force to drive the firing pin and which also absorbs a portion of the recoil.

Abstract: An agricultural sweep which includes a pair of divergent wings having sharpened, earth-cutting edges. The wings define an angle of between 60.degree. and 100.degree., and a hard metal insert is used to provide an overlying cap at the forward end of the two wings where the wings converge and extend toward a leading point. The pointed forward ends of the two wings are cut away, and a point carried by the insert is inserted in the space which remains after the pointed forward ends of the two wings have been removed. The insert tapers to a ridge or crest which lies in a plane which bisects the sweep, so that the wings lie on opposite sides of the bisecting plane.

Abstract: A rotary broom attachment for a motor grader, which has a mold board and structure to adjust the mold board for vertical elevation, side shift and rotary position about vertical and horizontal axes, is mounted behind and parallel to the mold board and has independent adjustment and control structure for positioning, and side shifting, if desired, of the broom relative to the mold board. Sensors are used to signal automatic shifting of the broom vertically or in side shift to avoid interference with the motor grader structure as well as obstacles in the path of the broom. The downward pressure of the broom is controlled by the proportional lift applied thereto by a hydraulic lift mechanism.

Abstract: A draft force sensor includes a bracket fixed to a tractor frame part. The bracket includes a pair of laterally-spaced legs which support a shaft to which is coupled the fore-end of a draft link. An end of the shaft is coupled to one end of a load strap. The other end of the load strap is pinned at the bracket to allow fore-and-aft loading of the strap from the shaft. A strain sensor is received in an aperture in a central portion of the load strap.

Abstract: A row following guidance device connecting the right and left ends of the forward portion of a row crop implement to a tractor will adjust the length of each left and right connection as the tractor deviates laterally from alignment with the crop rows to correctively guide the implement in alignment with the crop rows. A row following wheel signals a steering valve upon any lateral deviation of the implement from crop row alignment, the steering valve correcting the deviation by lengthening one connection between the tractor and the implement and shortening the other. The row following wheel is mounted for movement independent of the implement so that the implement may be raised or lowered without affecting the operation of the wheel.

Abstract: This device serves to immobilize the head and neck area of people who have obvious or suspected cervical trauma. Primarily, it consists of a metal frame with clear plastic side plates, for preventing the movement of the user's head, and it also includes a channel with a set screw, for holding the frame of the device to one end of a backboard.

Abstract: A base frame for a roll-over disc plow is symmetrical about a longitudinal axis and is adapted to be secured to a standard tractor hitch. A plow frame overlies and is pivoted to the base frame about the longitudinal axis. The plow frame is hydraulically moved about one hundred eighty degrees between extreme positions, in each instance lying against a respective one of a pair of steps effective to transmit forces between the towed base frame and a plow frame carrying two alternately used series of plow discs.

Abstract: The elevation of a tool carried by an implement towed by a tractor is determined by a hydraulic motor mounted on the implement adjusting the wheel height. A servo valve mounted on the tractor responsive to line pressure controls the hydraulic motor. An operator actuated vent valve mounted on the tractor vents line pressure to control the servo valve. A tool elevation responsive feedback vent valve mounted on the implement increasingly vents line pressure as the hydraulic motor changes tool elevation, to negate the effect of venting by the operator actuated vent valve. When hydraulic motor movement equals movement of the operator actuated vent valve, the feedback venting equals that of the operator actuated bent valve. A second negative feedback on the servo motor pistons then returns the servo valve to neutral closed position and change in tool elevation stops.

Abstract: Attachment for wheel-mounted loaders comprising a frame releasably connectible to the loader, extending forwardly from the loader in the normal travelling direction thereof and supporting a grader blade for operations such as grading, road maintenance and the like. To provide a stable and strong unit, the attachment is adapted to be mounted directly on the chassis of the loader and is intended to be an independently operable unit. The attachment is adapted to be easily connected to the loader, the available hydraulic and electric systems being utilized without any additional installations except for control units and switches, thus making the connection of the attachment very comfortable.