Abstract: A beach cleaner for traveling on sandy soil while being towed by a traction vehicle for recovering waste such as empty cans scattered on the sandy soil. The beach cleaner is provided with a travel body. The travel body includes a plurality of longitudinal members arranged in a hurdle shape spacedly and extending in a travel direction and also having in a front portion thereof a portion to be pulled by the traction vehicle. A flat plate-like scraper for scraping up waste together with sand during travel of the beach cleaner is provided in the front portion of the travel body. A net for separating waste from a mixture of sand and waste scraped up by the scraper and for storing the thus-separated waste thereon is stretched on an upper surface of the travel body.

Abstract: Waste scattered on a sandy beach is recovered in a clean and efficient manner by using a beach cleaner of a simple structure. In a first waste recovery step, a first beach cleaner A is allowed to travel on a sandy beach while being towed by a self-traveling vehicle R, whereby waste G1 such as string-like waste and other elongated waste is caught on rakes and conveyed to a waste recovery area. In a waste recovery station the first beach cleaner A is lifted to recover the waste. In a second waste recovery step, while a second beach cleaner is allowed to travel by the self-traveling vehicle, waste such as cans which have not been recovered in the first waste recovery step are scooped up in a waste conveying section, and are then collected in a waste collecting section by means of scraping blades and are recovered in a waste recovering area.

Abstract: A beach cleaner that is simple in configuration and light in weight and can be manufactured at a low cost. The beach cleaner is easy with regard to maintenance and inspection and can efficiently reclaim various kinds of refuse scattered on a beach. A beach cleaner includes a traveling body with ski members disposed at four corner portions of a frame having a substantially quadrangular shape. The beach cleaner is towed along a surface F of sandy soil by a traction vehicle R. A bar-like scraper is provided at a lower portion of a front portion of the traveling body and extends in a widthwise direction of the traveling body through a scraper supporting member for scraping up refuse on the sandy soil while the traveling body is operating. A refuse reclamation section is provided on the traveling body rearwardly of the bar-like scraper for collecting pieces of refuse scraped up and thrown rearwardly by the bar-like scraper onto a net member.

Abstract: A welding torch comprises a torch body having a wire guide cylinder for guiding a welding wire; an internal cylinder fitted to the torch body in such a manner as to surround the wire guide cylinder; and an external cylinder fitted to the internal cylinder in such a manner as to surround the internal cylinder. The primary interception of outside air is effected with a second shielding gas layer blown off from a second gas passageway on the outer side, and the complete interception of outside air is effected with a first shielding gas layer blown off from a first gas passageway on the inner side. Consequently, it is made possible thereby to sufficiently prevent outside air from reaching a molten pool and also sufficiently suppress the generation of an unfavorable surface oxide, thus enabling welding work to be satisfactorily practiced by using the above welding torch.

Abstract: A waste recovery station for a beach cleaner for recovering waste raked up by a beach cleaner. A waste recovery station for a beach cleaner includes a pair of station members arranged in parallel with each other through a required spacing. Each station member is provided with a pair of support posts with a foot such as, for example, a circular or square flat plate fixed to a lower end of each support post and is also provided with a guide member fixed to upper ends of the support posts. In the guide member, a longitudinally intermediate portion is formed as a horizontal portion and front and rear end sides are formed as slant portions and are bent downwardly at an obtuse angle. The beach cleaner A is lifted by the guide members while passing between the station members, whereby waste caught on rakes is allowed to drop onto the sand.

Abstract: Waste scattered on a sandy beach is recovered in a clean and efficient manner by using a beach cleaner of a simple structure. In a first waste recovery step, a first beach cleaner A is allowed to travel on a sandy beach while being towed by a self-traveling vehicle R, whereby waste G1 such as string-like waste and other elongated waste is caught on rakes and conveyed to a waste recovery area. In a waste recovery station the first beach cleaner A is lifted to recover the waste. In a second waste recovery step, while a second beach cleaner is allowed to travel by the self-traveling vehicle, waste such as cans which have not been recovered in the first waste recovery step are scooped up in a waste conveying section, and are then collected in a waste collecting section by means of scraping blades and are recovered in a waste recovering area.

Abstract: A beach cleaner for traveling on sandy soil while being towed by a traction vehicle for recovering waste such as empty cans scattered on the sandy soil. The beach cleaner is provided with a travel body. The travel body includes a plurality of longitudinal members arranged in a hurdle shape spacedly and extending in a travel direction and also having in a front portion thereof a portion to be pulled by the traction vehicle. A flat plate-like scraper for scraping up waste together with sand during travel of the beach cleaner is provided in the front portion of the travel body. A net for separating waste from a mixture of sand and waste scraped up by the scraper and for storing the thus-separated waste thereon is stretched on an upper surface of the travel body.

Abstract: A beach cleaner for recovering waste while traveling in a towed state by a traction vehicle. A grating-like portion scoops up waste present in front of the beach cleaner as the beach cleaner is moved. A rotor is disposed on an upper side of the grating-like portion and is adapted to rotate so that a lower portion thereof moves rearwardly. The rotor is mounted on a rotary shaft extending in the transverse direction of the beach cleaner. Waste is delivered rearwardly between the rotor and the grating-like portion. With travel of the beach cleaner, waste present in front of the beach cleaner is scooped up onto the grating-like portion and sand which is scooped up together with the waste is allowed to drop through gaps in the grating-like portion.

Abstract: A beach cleaner for traveling on sandy soil while being towed by a traction vehicle for recovering waste such as empty cans scattered on the sandy soil. The beach cleaner is provided with a travel body. The travel body includes a plurality of longitudinal members arranged in a hurdle shape spacedly and extending in a travel direction and also having in a front portion thereof a portion to be pulled by the traction vehicle. A flat plate-like scraper for scraping up waste together with sand during travel of the beach cleaner is provided in the front portion of the travel body. A net for separating waste from a mixture of sand and waste scraped up by the scraper and for storing the thus-separated waste thereon is stretched on an upper surface of the travel body.

Abstract: A beach cleaner for recovering waste while moving in a towed state by a traction vehicle. A grating-like portion scoops up waste present in front of the beach cleaner as the beach cleaner is moved and a reticulate portion that is formed behind the grating-like portion to hold waste. As the beach cleaner is moved, waste present in front of the beach cleaner is scooped up onto the grating-like portion and is held with the reticulate portion formed behind the grating-like portion. Sand that is scooped up together with the waste is allowed to drop through the gaps in the grating-like portion.

Abstract: A beach cleaner for recovering waste while being towed by a traction vehicle. The beach cleaner includes a grating-like portion for scooping up waste present in front of the beach cleaner as the beach cleaner is moved. The grating-like portion is inclined so that the front side thereof assumes a lower position. A rotor is disposed on an upper side of the grating-like portion and for rotation so that a lower portion thereof moves rearwardly. The rotor is centered on a rotary shaft extending in the transverse direction of the vehicle. The rotor delivers the waste rearwardly between the rotor and the grating-like portion. A reticulate portion is formed behind the grating-like portion. The reticulate portion is inclined so that the rear side thereof is located at a lower position to hold waste.

Abstract: A lawn mower has a cutter blade rotatable in a substantially horizontal plane, and a cutter housing with the cutter blade being rotatably accommodated therein, the cutter housing comprising an upper wall having a raised scroll, and a circumferential wall having a discharge duct contiguous to the scroll and defining a discharge port. A first inner member is detachably disposed along inner surfaces of the upper and circumferential walls of the cutter housing, the first inner member having an inner surface of arcuate cross section. A second inner member is detachably disposed in the discharge duct contiguously to the first inner member in closing relationship to the discharge port, the second inner member being separate from the first inner member and having an inner surface of arcuate cross section.