Abstract: In a method for drawing at least one fraction of solid substance by suction from a heterogeneous stock of several solid substances, which are segregated according to granular size and/or specific weight by supplying a segregation fluid, for example water, into a segregation zone at a distance from a suction nozzle of a suction pipe held in the stock, a selected fraction of segregated solid substances together with the fluid being conducted away in the form of a suspension through the suction nozzle water is vigorously injected into a ground layer for washing out the soil so that a fraction of fine grains is picked up in a whirl and can thus be directly sucked off through the suction pipe. With this method it cannot be avoided that both fine and coarse grains are sucked up together by one and the same suction nozzle.

Abstract: A method and a device for obtaining sugar crystals from a sugar solution by concentrating the thick juice emanating from the multi-stage evaporator in a continuously operating pre-concentrator to a concentration at which seed granulate could be added to the boiling pan, by raising the pressure of the concentrated thick juice, by supplying the juice to a buffer vessel in which the juice is subjected to a higher pressure than the pressure at which it is concentrated, the temperature being maintained and the contents of the vessel being thoroughly stirred and by filling the boiling pan from the buffer vessel while simultaneously seed granulate is added.

Abstract: The invention relates to an agricultural implement for raking or spreading crop lying on the ground comprising a frame attached to the three-point lift of a tractor and at least one pair of rake wheels suspended to said frame and driven by the power take-off shaft of the tractor; the improvement concerns the frame comprising a longitudinal beam coupled with the tractor and extending in the direction of movement and a transverse beam pivoted to the former, the pivot having a vertical hinge pin as well as a hinge pin extending in the length direction, and an adjustable coupling member being arranged between the longitudinal and transverse beams for the adjustment of the angle formed by the beams.

Abstract: Metal clad switchgear for high voltages comprising monophase switchgear units, in each of which the circuit-breaker is accommodated in a spherical casing and each isolator connected to the circuit-breaker is provided in a substantially tubular casing which is attached to the casing of the circuit-breaker and has its longitudinal axis directed radially or substantially radially to the sphere of the circuit-breaker casing.

Abstract: An injector for delivering fuel to a combustion engine in which the pump chamber of each fuel pump has a volume adjustable by control means, is provided with a displacer body which is connected to an armature of an electromagnet. The stroke of the displacer body is limited by an adjustable stop and should be influenced as less as possible by wear due to stopping a considerable mass of the armature every time. In order to expose the injector less to wear the displacer body is coupled with the armature through an elastic coupling.

Abstract: A method for welding two thick-walled metal pieces of tubing of a pipe-line to one another, in which at the joint to be formed between said pieces of tubing overlapping portions thereof extending radially over a small marginal portion of the wall thickness adjacent to the internal cavity of the pipe-line are bonded to each other by the explosion of an internal explosive charge and the portions of the pieces of tubing extending radially over the rest of the wall thickness thereof are thermally welded to one another.

Abstract: Glass fiber-reinforced epoxy resins are rendered fire-protecting by incorporating in their moulding compositions a combination of three materials: a source of carbon, such as e.g. pentaerythritol, a source of phosphoric acid, such as e.g. a water-insoluble nitrogen-containing polymer phosphate, and a source of non-inflammable gases such as e.g. melamine.

Abstract: A rake comprising a frame, a plurality of rake wheels rotatably journalled by the frame and three members for fastening the frame to the three suspension rods of a tractor is simplified due to the fact that the fastening members are arranged on the three ends of a T-shaped frame tilted over an acute angle.

Abstract: Apparatus to separate a mixture of liquids of different specific gravities, e.g. oil and water, said apparatus having in a closed vessel a separation space with means for controlling the discharge of lighter liquid therefrom and a multiple filter provided beneath said separation space and consisting of a series of filtering cloths separated from one another by intermediate chambers, the upper wall of each intermediate chamber being provided with passages opening into the lower region of the separation space and controllable by valve means.The invention relates to an apparatus for the separation of a mixture of liquids of different specific gravities, e.g.

Abstract: A mowing implement comprises a housing extending transversely of the direction of travel of the implement, said housing being connected via a foot which is directed rearwardly from the housing with suspension means for fastening the housing to a vehicle. As a result the mowing implement may be fastened firmly to the vehicle.

Abstract: A vehicle transmission employs a pair of coaxial input shafts, one driven at fixed ratio and the other driven at an infinitely variable ratio through a hydrostatic transmission which relatively reverses direction of rotation. A single input-dual input planetary gear assembly couples the coaxial input shafts to an output shaft. The planetary gear assembly is made up of a reverse and low forward speed planetary gear set and a high forward speed planetary gear set connected together to provide a four element planetary gear assembly synchronously shiftable between low and high ranges and which provides torque multiplication throughout the speed range and produces the same direction of rotation of all four elements at substantially or at the same speed when operating at the maximum forward speed condition.

Abstract: A collapsible, self-supporting structure is disclosed wherein the structure is made up of a network of rod elements pivotally joined at their ends and forming scissors-like pairs in which rod element crossing points are pivotally joined. The network consists of a plurality of pairs of inner and outer apical points where groups of radiating rods are pivotally joined. The outer apical points lie on a surface of revolution such as a spherical section and each group of rods radiating from an inner apical point lie essentially in a common plane whereby to effect the self-supporting action. For any pair of apical points the group of rods defining the inner apical point radiate in their common plane and join rods of other groups at the surrounding outer apical points.

Abstract: In the making of vehicle bodies such as truck and trailer bodies, the roof sheets are secured to the roof bows by means of a hot melt adhesive. Premature cooling of the adhesive which otherwise does not allow sufficient time to position the roof sheet and then mate it with the roof bows properly after the adhesive is applied, is prevented by employing a heat-insulating layer of glass fiber scrim cloth on the roof bows and upon which the hot melt adhesive is applied. Temporary clamping pressure forces the hot melt adhesive through the pores of the scrim cloth and into contact with the roof bows whereupon it rapidly cools and sets. The presence of the scrim cloth provides a substantial increase in the otherwise unacceptably low bonding strength of the hot melt adhesive.

Abstract: Apparatus is disclosed which functions to adjust the moisture content of casting sand as it is being recovered, so that the sand may be re-used without significant or further adjustment of its water content. The apparatus includes a cooler-drier which receives hot castings and sand and discharges the sand and castings separately. A water spray impinges upon the sand and castings as they are moved through the cooler-drier and a temperature sensor which senses the temperature of the sand/castings mixture at the inlet controls the water spray so that the discharged sand possesses a uniform and selected moisture content.

Abstract: For withdrawing a bundle of pipes from a heat exchanger and for inserting such bundle the required tractive forces should be exerted on the bundle in a direction in line therewith by means of a key. In order to engage the pipe bundle at its front end and to firmly grip it in a manner that hanging through of the pipes is restricted to an admissible value, the gripper comprises a clamp having at least two clamping jaws adapted to engage the outer circumference of a front flange of the bundle of pipes.

Abstract: An electric contact device provided with a composite annular contact member and a contact pin cooperating therewith. This contact member comprises a metal holder with a cavity and contained in the latter a circularly bent stack of V-folded contact plates and a stabilizing ring for said plates. Said ring extends through slots of all contact plates and said slots are formed in the narrower inwards extending parts of the contact plates. Said narrower plate parts are adapted to contact with their free contact edges the contact pin and the outwards extending broader parts of the contact plates are with their free contact edges in permanent contact with the holder.

Abstract: For withdrawing a bundle of pipes from a heat exchanger and for inserting such bundle the required tractive forces should be exerted on the bundle in a direction in line therewith by means of a key. In order to avoid drawing the jacket of the heat exchanger from its supporting frame and to avoid deformation of said frame the bundle is engaged by a gripper arranged on a main frame suspended to a carriage provided with telescopic carrier legs.

Abstract: As in-line mixer for fluids, comprising an elongated open-ended, hollow tube and stationarily positioned therein two or more elongated, helically twisted and interengaging strips which are tightly enclosed by the tube.

Abstract: A method and a device for applying a tape around one or more objects, in which first a tape consisting of two interconnected tapes is passed in U-shaped fashion around the object or objects; thereafter the two tape portions extending beyond the object or objects are moved towards one another and pressed one against the other by means of movable tape strainers; thereupon the tape portions are cut in the contact area and finally the formed tape end portions are interconnected in pairs, in such a manner that the interconnected end portions in the plane of the tape of which they form part.

Abstract: An injector for delivering fuel to at least one atomizer of a combustion engine comprises at least one pump communicating with the atomizer and control-means depending upon the pressure in the inlet manifold of the combustion engine for regulating the quantity of fuel to be atomized by the atomizer.The invention has for its object to avoid, in the decelerating state of the combustion engine, environmentally polluting constituents in the exhaust gases of the combustion engine and to prevent spoiling of fuel.This is achieved by providing the control-means with a switch for stopping the pump when the pressure in the inlet manifold drops below a given value. Soon after the decelerating state of the combustion engine is realized, this injector does no longer supply any fuel.