Abstract: An oil supply mechanism in a deep excavator comprising a chassis, a turntable disposed on the chassis, a boom which is pivotally supported on the turntable and is vertically swingable, a stretchable arm arrangement which is stretchable in the longitudinal direction and comprises base, middle arm and top arms, and buckets which are attached to the top arm for excavating and holding earth or sand. The oil supply mechanism includes an oil supply unit provided in the middle arm, and first and second hollow oil supply pipes are airtightly slidable in the oil supply unit and move outwardly from the oil supply unit in opposite direction. The outer end of the first oil supply pipe is coupled with the base arm, and the outer ends of the second oil supply pipe is coupled with the top arm.

Abstract: A raw sewage disposal apparatus for evaporating and drying raw sewage by heating. An evaporation container has a closed bottom portion and an opened upper portion for containing raw sewage thereon. A rotary holding structure holds an upper end of the evaporation container so as to permit horizontal rotation thereof. A covering supports the rotary holding structure and closes the opened upper portion of the evaporation container from the atmosphere. A frame capable of hanging the evaporation container supports the covering substantially horizontally. A driving device is provided for rotating the evaporation container, and an electromagnetic heating means is disposed close to a lower surface of the evaporation container and generates a high-frequency electromagnetic wave which is supplied to the evaporation container.

Abstract: A disposal apparatus according to a first aspect comprises an evaporation pipe communicating with a container for discharging vapor evaporated from raw sewage therein. A catalyst box accommodates a catalyst and communicates with the evaporation pipe. An ejector connects to the catalyst box for drawing air therefrom. A hot-air blower connects upstream to the catalyst box for heating flowing air, and an air supply unit supplies air to the ejector and the hot-air blower. A bypass pipe communicates between the ejector and the container. The disposal apparatus according to a second aspect comprises a heat-resistant airtight container for raw sewage, and an induction heating device disposed under the container. The heating device has a coil for generating a high-frequency electromagnetic wave to heat the container by induction. A rotatable stirrer and heat-holding balls are contained in the container. A stool communicates with the container through a valve mechanism.

Abstract: Raw sewage, toilet paper or foreign matter is prevented from being stuck to an inner bowl of a stool by air bubbles. A cleaning mechanism of the stool comprises an outer cover which has an upper opening and can store cleaning liquid therein, an inner bowl accommodated inside the outer cover and a ring-shaped upper cover which contacts the upper end of the outer cover. An upper end peripheral edge of the inner bowl is spaced from the outer cover and upper cover and air is spouted from air discharge bodies provided at the bottom of the outer cover so that the air discharge bodies generate air bubbles which agitate the cleaning liquid so as to generate bubbles which stick to the entire surface of the inner wall of the inner bowl.

Abstract: A raw sewage disposal apparatus capable of easily stirring raw sewage and cleaning a container by rotating the container per se after introducing the raw sewage into the container and heating, evaporating and drying the raw sewage. The raw sewage disposal apparatus comprises a container for accommodating raw sewage therein, an electromagnetic heater for heating the container, a rotary holder for rotatably holding the container, a driver for rotating the container, spherical stirrers accommodated in the container, and a nonrotatable baffle having one end fixed to the cover plate and the other end extending to a position adjacent to the bottom of the container so as to contact the stirrers.

Abstract: A fork lift truck loading mechanism mounted on a chassis of a movable truck for loading a self-propelled fork lift truck by connection to the forks of the fork lift truck so as to hold the fork lift truck and turning of the forks together with the fork lift truck onto a bed of the truck. The fork lift truck loading mechanism comprises a holding arrangement which is supported by the chassis of the truck so as to be movable therewith and turned from substantially a horizontal position to a substantially perpendicular or forwardly inclined position so as to hold the forks of the fork lift truck, and a rotary drive interposed between the truck and the holding arrangement for turning the holding arrangement.

Abstract: There is disclosed a shoring device for holding shoring boards against the walls of a trench. The shoring device is equipped with a locking mechanism to lock the device in an extended position in order to prevent the trench walls from collapsing. The shoring device includes a cylinder, a piston, and a piston rod with a rectangular cross-sectional geometry. The cylinder has an inlet for introducing a hydraulic fluid which upon entry into the cylinder causes the piston to slide within the cylinder, and the elongated piston rod to extend radially outwardly from the cylinder. In this extended position, the shoring device holds the shoring boards tightly against the walls of the trench. Upon retraction of the piston rod back into the cylinder, a cylinder end cap acts as a scraper, removing dirt and other particles from the surface of the rectangular piston rod.

Abstract: To excavate sticky soil such as clayey soil, left and right buckets of a clamshell bucket are slightly inclined, thereby reducing the force to pull the buckets from a hole. The clamshell bucket includes left and right buckets which are closable, thereby holding soil, and a hydraulic cylinder having a stroke reserve so as to be further extendible after the buckets are closed, whereby the closed buckets can be displaced sidewardly relative to the vertical.

Abstract: A laterally movable mechanism for moving a vehicle in a direction perpendicular to the traveling direction by a slide mechanism attached to the vehicle chassis. Laterally movable mechanisms are disposed at front and rear portions of the chassis, and each movable mechanism includes a pair of lifting devices capable of lifting the chassis upward, and a slide device is connected to the lower portion of the lifting devices and is capable of moving laterally while contacting the ground.

Abstract: A lifting apparatus capable of lifting operators or materials upward and capable of lifting a platform on which heavy materials are placed to an elevated spot. The lifting apparatus comprises a pair of middle booms which are rotatably coupled to each other at the center thereof in an X-shape, a lower boom which is extended from or contracted in the middle boom and is connected to a chassis, an upper boom which is extended from and contracted in the middle boom and is connected to the platform, and an operating mechanism which is disposed between the chassis and the middle booms and is movable from a folded position into a vertically straight position for lifting the middle booms.

Abstract: A raw sewage disposal apparatus employing a heat-resistant vessel for containing raw sewage, a plurality of stirring blades for stirring the raw sewage in the vessel, a plurality of heat-holding bodies contained in the vessel, an introduction pipe connecting the vessel and a main stool, a closing device provided in the introduction pipe, a urine stool for receiving urine, a urine tank for containing urine, a discharge pipe interposed between the urine tank and the main stool, a valve interposed along the discharge pipe for discharging urine from the urine tank to the main stool, and an air supply for pressurizing the urine tank. The sewage disposal apparatus is preferably mounted in a prefabricated structure having a base, a hollow side wall portion placed on the base, and a roofed portion placed on the side wall portion to cover the interior thereof.

Abstract: A deep excavator comprising a stretchable arm arrangement having four telescopically assembled alms which are simultaneously extended and contracted for excavating earth or sand to form a deep hole. The stretchable arm arrangement houses therein a working unit comprising a pair of hydraulic cylinders which are arranged in parallel with each other while the cylinder rods thereof are disposed to operate in opposite directions and the hydraulic cylinder housings are assembled so as to relatively slide. The cylinder rods and the cylinder housings are individually coupled each to a respective arm whereby the arms are interlocked with the hydraulic cylinders so as to be extended simultaneously with the hydraulic cylinders when both of the hydraulic cylinders are extended.

Abstract: A stretchable arm of a deep excavator comprises top, middle and base arms wherein a bucket is suspended from the top arm and a working unit is fixed to the middle arm. Two hydraulic cylinders constituting the working unit are arranged in parallel with each other while cylinder rods thereof are oppositely directed, wherein the cylinder rod of one hydraulic cylinder is coupled to the base arm and the cylinder rod of the other hydraulic cylinder is coupled to the top arm. It is possible to extend and contract each arm of the stretchable arm synchronously with one another at higher speed compared with a conventional deep excavator having a single hydraulic cylinder. The oil under pressure which flows out from the discharge chamber of each hydraulic cylinder can be merged into the oil under pressure for extending each hydraulic cylinder so that the amount of oil to be supplied to the pressure chamber is increased.

Abstract: A raw sewage disposal apparatus for use in a temporary toilet capable of continuously drying a large amount of raw sewage. The raw sewage disposal apparatus comprising an incinerator shielded from the outside, a swing shaft rotatably horizontally supported by the incinerator, a drying cauldron which is hollow at the inside thereof and fixed to the swing shaft, an introduction port which is defined on the peripheral surface of the drying cauldron for introducing raw sewage in the drying cauldron, a plurality of spherical stirring balls which are accommodated in the drying cauldron, and a burner communicating with the lower portion of the incinerator for jetting flame toward the bottom surface of the drying cauldron.

Abstract: A construction machine having a mobile chassis, a boom mounted on the mobile chassis and capable of swinging vertically, and an arm pivotally connected to the boom. An accessory detachable mechanism connects to a tip end of the arm. An accessory is releasably held by the detachable mechanism. The mechanism includes a pivotal four-bar linkage defined in part by the arm. First and second attaching arrangements are associated with the mechanism and releasably engage respective first and second attachment parts provided on the accessory. The first attachment arrangement includes hooks which engage the first attaching part as defined by a connecting pin on the accessory. A pressure cylinder is associated with the mechanism to effect relative engaging or releasing motion between the first and second attaching arrangements.

Abstract: A liquid evaporator includes an air-tight outer container containing liquid therein, the liquid container having support legs adjacent the bottom surface thereof; an inner container mounted on the legs for partitioning the interior space of the outer container, the inner container having a wall made of insulating material; and a heater fixed to an upper portion of the outer container and positioned inside the inner container. The liquid evaporator may be combined with a deodorizing device for forming a urine treating device, wherein the urine treating device includes a deodorizing housing having an upper portion provided with a secondary heater therein, a catalyst surrounding the secondary heater, a blower provided outside the housing, and a diffusion pipe provided at the upper portion of the housing.

Abstract: An excavator comprising a movable body, a boom mounted on the movable body, first hydraulic cylinders, an outer arm pivotally mounted on the boom, a second hydraulic cylinder mounted on a rear surface of the boom, an inner arm inserted into the outer arm and movable telescopically relative to the outer arm, a bucket connected to one end of the inner arm, a bucket connected to the tip end of the inner arm, a bucket cylinder provided between the bucket and a guide mechanism, the guide mechanism being slidably mounted on guide plates fixed to the outer arm, a third hydraulic cylinder connected to a base end of the outer arm and having a rod connected to a central portion of the inner arm for moving the inner arm relative to the outer arm, and an interlocking device connected between the guide mechanism and the front portion of the inner arm. A hook mechanism can be mounted at a front portion of the inner arm.

Abstract: A raw sewage disposal apparatus capable of evaporating the liquid component of raw sewage contained in an airtight vessel and capable of cleaning the vessel after and evaporating the liquid component of the raw sewage and heating the vessel so that dust which is not evaporated can be collected with assurance, hence the apparatus can be used for a long time. The apparatus comprises a vessel for containing the raw sewage therein, a heater for heating the lower portion of the vessel, an air supply pipe for supplying air into the vessel, a discharge pipe communicating with the vessel for discharging vapor formed by the evaporation of the liquid component for the raw sewage, a catalyst box connected to the discharge pipe by way of a closing valve, a dust collection box connected to the discharge pipe by way of a closing valve and a collection bag housed in the dust collection box for separating the dust from the air and collecting the dust.

Abstract: A raw sewage disposal apparatus, such as a portable toilet. The apparatus has a vessel with a first introduction pipe for feeding raw sewage into the vessel. The vessel is externally heated and contains heat-holding bodies and an agitator so that the sewage can be heated to evaporate liquid therefrom while being agitated to break down nonevaporable substances into powder. Air is circulated through the vessel to remove the vapor and later the powder therefrom. A deodorizing means including a catalyst, and a preheater for preheating the catalyst, are provided to treat the vapor to make it substantially odorless. A dust collector is provided to collect the powder. The dust collector can be heated, if necessary, to evaporate liquid present therein. A liquid level detector can be provided on the vessel to indicate when the vessel contains a large amount of raw sewage.