Abstract: A walking operator type cultivator comprising a rotary plow, a ground engaging member for setting a plowing depth, and a position adjusting mechanism for raising and lowering the ground engaging member. The position adjusting member is automatically controllable according to signals transmitted by an inclination sensor detecting fore and aft inclinations of the cultivator. The cultivator further comprises a mechanism for stopping the automatic control of the position adjusting mechanism which is necessary under certain operating conditions of the vehicle. As a trigger for this control stopper mechanism a plowing clutch, a propelling system clutch or the inclination sensor is used.

Abstract: A hydraulic construction for a working vehicle comprising a transmission case housing a hydraulic clutch and defining a lateral opening, and hydraulic control device mounted on an inner face of a cover attached to the transmission case to close the opening, the hydraulic control device acting to control oil flows to the hydraulic clutch. The hydraulic control device is hydraulically connectable to oil passage device connected to the hydraulic clutch when the cover is attached to the transmission case.

Abstract: A harvesting apparatus for automatically removing fruit from its growth source comprising a harvesting hand mounted at a distal end of an articulated arm assembly, a video camera for picking up a fruit image, and a control unit for guiding the harvesting hand to the fruit in response to information provided by the video camera. The harvesting hand includes a vacuum pad for drawing and catching the fruit, and a calyx cutting device. The vacuum pad and cutting device are movable relative to each other between a first position in which the vacuum pad is disposed forwardly of the cutting device for approaching and drawing the fruit and a second position in which the cutting device is disposed forwardly of the vacuum pad for removing the fruit from its tree.

Abstract: There is disclosed a planetary backward and forward drive apparatus comprising a planetary gear mechanism disposed between an input and an output shafts. The planetary gear mechanism includes a carrier connected to the input shaft, two step planet gears supported by the carrier and consisting of a large first gear and a small second gear, a first sun gear connected to the output shaft, and a second sun gear freely rotatably mounted on the first sun gear and meshing with the second gear. A forward drive condition is provided when the carrier and the second sun gear are connected to each other by an operation of a hydraulic clutch, and a backward drive condition is provided when the second sun gear is fixed to a stationary case by an operation of a hydraulic brake.

Abstract: A chroma keying generator apparatus is disclosed having a monitor camera transmitting color signals to multipliers for separating a luminance signal from an image signal and amplifying same by selected gain levels, comparison circuits for comparing two color signals with pre-selected reference levels therefor having upper and lower limits and producing outputs denoting that the ratio of the color signal to the luminance signal for a given color falls within a pre-selected reference range, and a gate circuit which evaluates the outputs from the comparison circuits to produce pulses representing a logical "1" when the output is within the reference range and a logical "0" when the output is not within the reference range.

Abstract: A transmission comprising a main change speed mechanism, an auxiliary change speed mechanism, a rear differential mechanism and a cassette type supplementary change speed mechanism. The supplementary change speed mechanism acts on the transmission through an opening defined in a transmission case housing the transmission. The supplementary change speed mechanism is housed in and supported by a supplementary change speed case which is attached to the transmission case. Transmissions of various specifications may be provided by making various types of supplementary change speed mechanism. The supplementary change speed mechanism is applicable to a propelling transmission line and/or a power takeoff transmission line.

Abstract: The invention provides an axle reduction apparatus for a tractor having a planetary reduction mechanism mounted between an axle and an axle drive shaft. The axle carries an integrated gear consisting of an input gear to receive drive from the drive shaft and a sun gear of the planetary reduction mechanism.

Abstract: In an intake manifold for a multi-cylinder air-fuel mixture suction type engine according to the present invention, the manifold body is formed into a simplified hollow shell-shape which is elongate bilaterally. And a carburetor is installed on the one end side of the front wall of the manifold body in the state of facing obliquely to the other end side of the back plane thereof. Therefore, the liquid fuel particles in the air-fuel mixture sucked into the manifold body from the carburetor are distributed nearly uniformly to every cylinder through each intake port arranged bilaterally in the back plane of the manifold body, and hence the density of the air-fuel mixture in every cylinder can be nearly uniformized.

Abstract: A hydraulic circuit construction for a power shift transmission having logical operation valves mounted on a pressure oil supply passage connecting a hydraulic clutch to a pressure oil source, the logical operation valves being operable to engage and disengage the hydraulic clutch by opening and closing the pressure oil supply passage in response to a switching operation of a change speed device connected upstream of and in series to the hydraulic clutch. The pressure oil supply passage has mounted thereon a pressure control device including a first valve mechanism, a second valve mechanism and an orifice parallel-connected to the pressure oil supply passage, and an accumulator is mounted between the pressure control device and the hydraulic clutch to assure a speedy and smooth operation of the hydraulic clutch.

Abstract: The present invention relates to an intake system with double intake ports for internal combustion engine, involving two intake ports for each cylinder chamber of the engine, one of the two intake ports being a pure helical port which introduces suction air with helical flow, but without straightway flow, into the cylinder chamber, and another intake port being partially helical port which introduces suction air with helical flow and straightway flow into the cylinder chamber, the outlets of the two intake ports being preferably located in nearer side of the center of the cylinder chamber, and side by side in a parallel direction with the axis of cam shaft; and preferably the pure helical intake port being suspended in lower speed range by pausing device having pause valve which is preferably consisted of suction valve; and the length of suction passage being preferably varied in accordance with the variation of speed ranges.

Abstract: A four wheel drive vehicle with dirigible front wheels, comprising a main propelling drive transmission, and a front wheel drive transmission connected to the main transmission. The front wheel drive transmission is switchable between a first four wheel drive mode in which the front wheels and the rear wheels are driven at a substantially equal peripheral speed and a second four wheel drive mode in which the front wheels are driven at a higher peripheral speed than the rear wheels. The front wheel drive transmission includes a piston operable by a hydraulic control system including a control valve mechanically interlocked to a steering section of the vehicle for switching the front wheel drive transmission from the first drive mode to the second drive mode. The piston, which normally is biased toward a position for the first drive mode, is movable against the biasing force to a position for the second drive mode when the front wheels are steered to an angle exceeding a predetermined angle.

Abstract: A grass collection bag suited for use with a walking operator type lawn mower having a cutting blade and a steering handle extending rearwardly, which grass collection bag is removably attached to the steering handle to extend in a fore-and-aft direction of the lawn mower. The grass collection bag comprises a tubular main body portion defining a grass inlet at a forward end thereof and a grass outlet at a rear end thereof, and a lid member attached to the main body portion to be vertically swingable about an axis adjacent a lower rear edge of the main body portion for opening and closing the grass outlet. The main body portion includes a first engagement member extending along an upper rear edge thereof, and the lid member includes a second engagement member extending along a free end edge thereof. One of the first and second engagement members defines a slit which is vertically directed when in an engaged position, and the other defines a projection engageable with the slit.

Abstract: An agricultural tractor in which a transmission case comprises a front case portion housing a hydraulic stepless change speed mechanism and a rear case portion housing a gear mechanism. A partition wall is interposed between the front and rear case portions, and a tractor frame is secured to the partition wall by means of bolts.

Abstract: A load handling vehicle having a load handling device disposed in front of the vehicle body and tiltable by a pair of opposite tilting cylinders. A main frame extends longitudinally of the vehicle and is fixed to each side of the vehicle body at a plurality of locations spaced apart longitudinally thereof. Each tilting cylinder extends longitudinally of the vehicle and is positioned above and close to the corresponding main frame in the vicinity of the front wheel fender inside thereof. The tilting cylinder is connected to a bracket on the main frame in the vicinity of and above the front axle and terminates at a position below the steering assembly of the vehicle. The arrangement of the cylinders permits the device to be positioned close to the vehicle body, enabling the driver to obtain a good forward view. The vehicle body is reinforced by the main frames against fracture.

Abstract: A power transmitting apparatus for a tractor is provided, which includes a travel drive line and a PTO drive line. The travel drive line is operatively connected to an engine through a running-travel clutch whereas the PTO drive line is directly connected to the engine and includes thereon a PTO clutch. Thus the two drive lines are independent of each other in respect of power transmission and clutching operation.

Abstract: The present invention relates to a bag-like container, and a spherical container in which a latent heat accumulating material is enclosed, and a heat accumulating apparatus employing such containers. A heat accumulating mat material (A) is of a flat bag-like container divided into a plurality of sections, where a latent heat accumulating substance is enclosed. A spherical container (1A) has a heat transfer area enlarging portion of a recess (102), a groove (103). A solar heat accumulating greenhouse 2A has a radiator heat exchanging portion (2B, 2D), a heat accumulating tank 2C and a forced circulation liquid system.

Abstract: A working vehicle having a working device mounted on a swivel base rotated by a hydraulic motor. There is provided a control system which causes the swivel base to start and stop smoothly at highest possible standard speeds which are preset for an entire swivelling range.

Abstract: There is disclosed a transmission structure for an agricultural tractor wherein a clutch housing and a gear transmission case are interconnected by a transmission housing formed of sheet metal. The transmission housing contains an inner and outer double shaft construction comprising a propelling system drive shaft and a power takeoff system drive shaft. These drive shafts are connected to corresponding input shafts extending from the gear transmission case by means of a ball coupling and a flange type elastic coupling, respectively.

Abstract: A running apparatus for an agricultural vehicle comprising an oil stepless change speed device, an oil circuit for an oil pump and an oil motor to actuate the oil stepless change speed device and an accumulator. The accumulator accumulates a surplus of an output pressure of the oil pump when the pressure is higher than a predetermined value and discharges the accumulated pressure when the output pressure of the oil pump is lower than the predetermined value.

Abstract: An automatic differential locking system for a working vehicle having steerable front and rear wheels, which includes a selector for selecting a steering mode of the vehicle, an actuator for operating a differential locking mechanism, and a gate for sending a control signal to the actuator in response to a signal received from the selector. The gate is adapted to send a differential locking signal to the actuator upon receipt of a parallel steering mode signal from the selector. In response to the differential locking signal the actuator actuates the differential locking mechanism. Since differential revolutions of the wheels are limited at times of parallel steering, the vehicle is capable of accurate course revisions and alterations without slipping.