1. A bucket excavator (1) having an arm system (6) carrying a work tool (21) preferably formed as a ditcher (20) which has a dipper arm (30) fixed to a pivotable beam (12) and which can be folded generally in a vertical plane to a transport position and is adjustable from this position to an extended position, by means of a pivot drive connected to the beam (12), which engages with a dipper arm connection (15) on the free end of the dipper arm (30), characterised in that a pair (31) of alternately loadable traction cylinders (32, 33) is provided as the pivot drive, of which one serves for extending the dipper arm (30) and by means of a flexible traction means (49) is connected to the free end of the dipper arm (17), whilst the other traction cylinder (32) serves for folding the arm system (6) and is connected by a flexible traction means (38) between the connections (15, 19) of the dipper arm (30) and the work tool (21) to the dipper arm (30), and that both traction means (38, 49) on the beam (6) are guided between the dipper arm connection (15) and the beam connection, in which a rocker arm (53) fixed to the dipper arm (30) in the extended position of the dipper arm (30) turns the traction means (38) of the traction cylinders (32) serving for folding of the arm system (6) and in the folded position of the arm system (6) turns the traction means (49) of the traction cylinder (33) serving for the extension around the axis (16) of the dipper arm connection (15) by means of a curve (55).

The device (1) comprises a base (2), carrying a servo motor (3) and attached to the frame of a machine center. A carriage (6) with a vertical shaft (8) on top can be moved on two telescopically arranged rails (4,5) joined horizontally to the base (2). The tool holding elements (16,17) are positioned at the upper end of the shaft (8) and can be fixed with a locking unit (18). A control plate (12) is located at the second rail (5) acting in combination with a guiding roll (10) in order to facilitate a swivel motion of the tool carrier (15).

The invention relates to an agricultural machine provided with at least one pair of wheels (7) and at least one other wheel (15) for performing operations on the land, wherein at least the wheels (7) forming part of the one pair are displaceable in the direction transversely of the direction of travel. Such agricultural machines must normally be driven over the public highway, for instance between the different pieces of land where operations have to be carried out. Vehicles drivable on the public highway have a maximum permissible width. A first preferred embodiment provides the measure that the agricultural machine has four wheels, wherein the planes of projection do not overlap each other, or hardly so. Each piece of land is hereby driven over only once by such a wheel.

This invention relates to a machine designed to perform a complete spray treatment on agricultural land by incorporating in the soil liquid substances such as plant protection products, weedkillers, fertilisers and soil conditioners. The machine according to the invention is suitable in particular for treatments, such as fumigation of agricultural land, which involve incorporating into the soil liquid substances that subsequently evaporate and perform their function in the gaseous state. Said machine, which is of the type comprising: first means (3) designed to spray said soil with said liquid substances; second means (8) designed to break up said soil and mix it with said sprayed liquid substances; third means (5) designed to compact said sprayed soil, creating a compact crust which prevents the exit of the fumes generated by the evaporation of said liquid substances sprayed by said first means (3); nis characterised in that said first means (3), designed to spray said soil with said liquid substances, are positioned in the immediate vicinity of said second means (8), designed to crush said soil and mix it with said sprayed liquid substances, in such a way that said liquid substances are mixed with said soil simultaneously with spraying, and that said second means (8) include a stone-burying machine.

The present invention relates to a mobile joint ( 1 ) with spring resistance, suitable for a sitting device, comprising a first and a second joint element ( 10, 20 ), which are pivotally connected by a shaft ( 3 ), to allow tilting of the sitting device caused by the displacement of the users weight, comprising a first and a second parallel plate spring ( 18, 19 ) with first and second ends, with an intermediate blocking element ( 11 ), wherein each plate spring ( 18, 19 ) in the first end are connected to the first joint element ( 10 ), and in the second end are glidingly abutting the second joint element ( 20 ), the first and second plate spring ( 18, 19 ) each having an axis of rotation that is displaced in relation to each other and the shaft ( 3 ).

The invention concerns a device (1) for manipulating tools comprising two parts, said device being of the type consisting of a frame and at least one tray forming a table, designed to receive the mold. The invention is characterized in that it comprises two horizontally arranged trays (6, 9-7, 8) one of which is arranged sliding on the frame to be mobile in translation relative to the other tray, from a close position to a remote position and inversely, so as to enable the tool to be manually opened and closed.

A manually-actuated device for the deliver of a volume of liquid which includes an outlet through which liquid is in use delivered and a cover member which is movably disposed relative to the housing between a first position in which the cover member at least partly covers the outlet and a second position in which the cover member acts as a lever which in use is acted upon by a user to actuate the delivery device.

Carriage has a loading platform (2) in support with a single-track assembly (11) which is normal to the wagon and opposite-side paired extension (7) is located in the longitudinal direction of the wagon (5) and a drive is normal to it. The drives (9) are adjustable in the mounting position of the loading platform. The running border line (6) of the loading platform is parallel to car longitudinal direction.

A device for preparing and ejecting polymeric cement made from at least two pre-packaged components comprises a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture. A first starting component of the polymeric cement is present inside said tubular vessel near the first axial end wall. A hollow shaft extends through said aperture of the second axial end wall. A piston element comprises a closed container filled with a second starting component of the polymeric cement. The piston element is selectively lockable to the shaft. The container has a bore and is slidingly engaged upon said shaft. An agitator element is secured to one end of the shaft. Furthermore opening means for providing an opening in the closed container are provided. The hollow shaft is provided with a gas permeable filter means.

The invention relates to the automated cleaning of paint buckets (2).In a device intended for this purpose the curled mouth rims (6) of the buckets are pushed slidingly one by one into the teeth (22,23) of a lifting fork (21), tilted and positioned in upside down position at the location of a scraping station (12), where paint residues are removed from the inner surface by scraping. A thus cleaned bucket is then transported in upside down position to a flushing station (17) where the last paint residues are removed by flushing and spraying clean. The thus cleaned buckets are finally tilted back to their upright position and stacked onto each other in nested form.