baber/WOPTO huggingface dataset:
Patent NL-2031808-A (NL)
Title: Method for leaching chalcopyrite
Inventor: XUEJUN ZHANG
IPC: C22B3/00
Filed: 2022-05-09
Abstract: The present disclosure provides a method for leaching chalcopyrite, belonging to the field of hydrometallurgy, comprising: (1) mixing chalcopyrite and base, and smelting to obtain pretreated chalcopyrite; (2) performing oxidative leaching by mixing the pretreated chalcopyrite obtained in said step (1) with an acid solution, a catalyst and an oxidant to obtain copper— containing leachate. The base is firstly used, to smelt chalcopyrite in present disclosure, so that crystal lattice structure of chalcopyrite is changed, the leaching of copper is easier, and leaching temperature of subsequent leaching is reduced; the addition of catalyst and oxidant during acid leaching further reduces the leaching temperature, shortens the leaching time and increases leaching rate of copper. The results of the embodiments show the leaching temperature of the leaching method provided by the present disclosure is 75 °C, the leaching time is 2 h, and the leaching rate of copper reaches 99.9% or more.
Patent NL-6915335-A (NL)
Title: Circular woven fabrics of varying width
IPC: D03D3/00
Filed: 1969-10-10
Abstract: Hollow woven fabric of varying width is manufactured by the Jacquard process, by modifying spacing of one or more warp yarns during weaving, pref. by modifying the position of the yarn guides relatively to the wires of the reed.
Patent NL-6916578-A (NL)
Title: N-substd acetonimines prepn
Filed: 1969-11-04
Abstract: Acetone is reacted with excess primary aliphatic amine with a boiling point above 30 degrees C to produce N-substd. acetonimines. Preferred processs uses 1.5-6 moles amine per 1 mole acetone. Preferred amines are cyclohexylamine or n-hexylamine. Reaction is pref. at 50-120 degrees C. The products obtained may be used as starting materials in the preparation of 5-oxocaponitrile which is used in the synthesis of alpha-picoline. In an example 5 moles acetone and 25 moles cyclohexylamine are heated at 70 degrees C for 3 hours. Working up gives 97% of N-cyclohexylacetonimine calculated to the acetone used.
Patent NL-7416537-A (NL)
Title: Agricultural mowing machine - has driving gear ball bearing races integral with hubs in housing
IPC: A01D34/66
Filed: 1974-12-18
Abstract: The machine has a housing extending at right angles to the direction of travel and accommodating a series of gearwheels for the drive to the mower rotors. One or more of the gearwheels (10) is supported in the housing in a ball bearing (84), one of whose races is formed by a hub (31) integral with the h ousing. Thus construction is greatly simplified as compared with the conventional arrangement, in which separate ball races have to be secured in position on the housing.
Patent NL-7600397-A (NL)
Title: Indane derivs as odorants
IPC: C11B9/00
Filed: 1976-01-15
Abstract: Indane derivs. as odorants. The cpds. are: where one of R1 and R2 is O and the other is H2; Y is H or with X forms epoxide; one of the dotted bonds completes a double bond unless the epoxide is present; if the double bond is conjugated with R2 when the latter is O, X is H (musk and wood odour) where R6 is alkyl or acyl (balsam odour) 3a, 7a, epoxy-hexaxydro-1,1,2,3,3-pentamethylindone (pine wood odour) where the dotted bonds represent not more than two double bonds opt. conjugated (strong amber and wood odour with pine note) where R3 is is carbonyl, OH, acyloxy, or alkyloxy (musk and fruity odour). Used in cosmetics and detergents.
Patent NL-7601899-A (NL)
Title: Bulk material skip unloading system - lifts and tips skip and then steadily opens discharge aperture
IPC: B65B69/00
Filed: 1976-02-24
Abstract: Bulk material skip is emptied by tipping through more than 90 deg., its contents being retained by a cover, and discharged by opening an aperture in the top steadily wider. Tipping and opening the skip (8) is effected by lifting, tipping taking place in the first stage, while in the second the aperture is steadily opened wider. There can be a tipping frame with a cover support and locking devices ending the tipping movement. The frame moves in line with the support (25), and pivots (9) on a lifting arm, being first tipped by the arm and then moved upwards in relation to the support.
Patent NL-7612776-A (NL)
Title: Roof covering strip application system - uses removable strip alongside overlap to collect surplus adhesive squeezed out
IPC: E04D5/14
Filed: 1976-11-17
Abstract: The system applies roof covering material in strip form, the strips overlapping each other and warm bituminous asphalt being used as an adhesive and applied to the overlapping and overlapped portions. Surplus adhesive emerging from the side is removed after setting. Next to the overlapped portion of the previously-laid strip (2) is applied an adhesive strip (6), with glue on one side and of material hard to tear. The surplus adhesive flows out onto this strip when the next strip (4) of covering material is fitted. Once this has set, the adhesive strip is removed with it. The adhesive strip can be 15-20 cm. wide, with a tensile strength of at least 4 kg per cm. width.
Patent NL-7709329-A (NL)
Title: Cooker extractor hood with easily replaceable filter - has closed space between filter box and housing preventing passage of unfiltered air
IPC: F24C15/20
Filed: 1977-08-24
Abstract: The cooker extractor hood comprises a housing (1) which along its lower edge (2) is drawn inwards to form two steps, the protruding edge (4) of the filter box (3) engaging over the inner step (5). The distance between the raised edge (4) of the filter box (3) and the upright outer face (1a) of the housing (1) is measured so that the screen (7) can be suspended in the filter box (3) flush with the outer face (1a) via a U-shaped metal strip (18). The filter mat (6) is clamped air-tight around its outer perimeter along the front and its two longitudinal sides. The rear side (8) is pressed against the base of the box. The clamping rod (9) is welded to a U-shaped clamping hoop near the ends (11) at right angles and mounted as axes of rotation. The closed side (13) of the hoop (10) engages in slots (14) brackets (15) attached to the housing, with the slots (14) having openings (16) through which the clamping hoop can be hung up and removed. The filter box is held in the closed state by screws (21) at the front which engage in the housing (1) and by hinges (22) at the back.
Patent NL-7810757-A (NL)
Title: Cheese press.tool insertion mechanism - extracts from magazine and thrusts into filled vessel after alignment
IPC: A01J25/15
Filed: 1978-10-27
Abstract: The mechanism inserts a press tool in a cheese vessel filled with curds, having a feed conveyor for the filled vessels(7) and a magazine for the tools(16). A mechanism (10-15, 17-22) extracts the tools from the magazine and positions one above a vessel each time, also thrust it into the latter. It can comprise a series of ram units with grips for the tools, pivoting under the action of a further ram unit in the frame.
Patent NL-8002541-A (NL)
Title: Earth leakage detector for AC supplies - uses current transformer and magnetically-operated switch cutting off supply when flux from two coils varies
IPC: H02H3/33
Filed: 1980-05-01
Abstract: The live and neutral conductors (3 and 4) are fed through the centre of a toroidal current transformer (2). The magnetising winding (6) is fed from the mains supply via a coil (10) wound on one arm of a magnetic path (7). The magnet (13) is just powerful enough to hold a pole-piece (11) against the pull of a spring (12) if the flux provided by the coil (10) is equal and opposite to that provided by another coil (9) which is fed from the sec. winding (5). If earth leakage occurs, the current in the line conductor will be higher than that in the neutral, and the flux provided by the coils will differ by a corresp. amount. The spring pulls the pole-piece out of the magnetic path and operates a trip switch to switch off the supply.
Patent NL-8200944-A (NL)
Title: Electric shock stunning of slaughter animals esp. pigs - involves use of pair of electrodes which contact with its head as it moves along V=shaped conveyor assembly
IPC: A22B3/06
Filed: 1982-03-08
Abstract: Slaughter animals and esp. pigs are stunned using an electric shock whilst restrained between two conveyor belts in the form of a Vee. As each pig approaches the stunning device, it comes into contact with two sets of electrodes. The first set consist of several parallel electrodes hinged about a horizontal axis perpendicular to the length of the conveyor and held in the downward position by springs. The second set consist of a pair of parallel electrodes similarly supported but with their lower ends bent toward the front of the conveyor. As the pig is carried by the restrainer it first comes into contact with the rearmost electrode. As it moves further forward, its head and, preferably, its eyes come into contact with the front electrodes. The consequent closure of the circuit between the two electrodes causes a sensing current to flow which is immediately followed by a strong, stunning shock. After this, a timer prevents any further flow of current until the pig is clear of the stunner. This prevents the pig behind from causing a premature discharge of current. Prior art required manual contacting of electrodes with the pig from behind. This requires considerable physical strength from the person carrying out the stunning and delivers a shock of uncertain strength and duration to the muscles in the neck of the pig. Such a shock may cause muscular contractions which damage the inside of the pig. The above device eliminates the need for hand placing of the electrodes and passes a precisely sized and timed shock into the brain of the pig thus causing immediate stunning with no muscle spasms.
Patent NL-8401923-A (NL)
IPC: A01J25/15
Filed: 1984-06-18
Abstract: An apparatus by means of which one or more moulds containing curd and provided with a follower can be pressed simultaneously, comprising a supporting bottom whereon the moulds can be placed; a presser head disposed above the supporting bottom and movable towards and away from the moulds pressing means through which, via the presser head, controllable pressure can be exerted on the followers, said presser head being provided at the side facing the moulds with a resiliently deformable covering (1) of a foam material having a closed cell structure. The resiliently deformable covering (1) of foam material, at the side facing the moulds, is provided with studs (2) of the foam material uniformly distributed over the covering material (1) and integrally connected thereto.
Patent NL-8603242-A (NL)
IPC: A61H33/06
Filed: 1986-12-19
Abstract: Sauna with heating device comprising a container (5) with stones (6), a heating element (4) for heating said stones and a tube (7) for evaporating liquid which tube (7) has outlet openings (9) for vapour in its top surface and is connected to a liquid circulating conduit system (11) from which liquid portions can be allowed to enter the tube and evaporate.
Patent NL-8700754-A (NL)
IPC: B41F15/42
Filed: 1987-03-31
Abstract: The invention relates to a device for uniform distribution of a viscous medium over the width of a web-like moving substrate.According to the invention the device comprises a medium outflow slit (24, 25) which is delimited by walls (34, 35), whereby the slit-wall height dimension is at least 25 times the slit-width dimension and in particular 50-150 times the slit width dimension. The invention also relates to a method for coating a moving substrate with use of such a device and to a substrate which is coated with use of a device according to the invention.
Patent NL-8800009-A (NL)
IPC: C07C33/20
Filed: 1988-01-05
Abstract: The invention provides a process for the preparation of 5,6-dihydro-2H-pyran derivatives, wherein an aldehyde of formula I: <CHEM> wherein R1 represents an alkyl, cycloalkyl, aralkyl, alkaryl or aryl group having at most 15 carbon atoms and a diene of formula II: <CHEM> wherein R2 and R3 represents a hydrogen atom or an alkyl group having 1-6 carbon atoms are reacted in a Diels-Alder-type reaction under the influence of an inorganic Lewis acid catalyst, producing a compound of formula III wherein R1-R3 have the meaning given above. <CHEM>   Preferably R1 represents a 1-6 carbon atom alkyl group, a phenyl group or an o-, m- p-tolyl group. Isoprene or 2-methyl-1,3-pentadiene is preferably used as the diene. The preferred catalyst is AlCl3 or SnCl4 and an organic nitro compound may be used as the co-catalyst.
Patent NL-8900664-A (NL)
Title: Internal wall erection system - has fixing frame fitted between floor and ceiling for positioning partition panels
IPC: E04B2/74
Filed: 1989-03-17
Abstract: Partition panels are positioned, using an angled frame construction, in which panels with hook and eye mechanism in panel recess are placed. A wall section (1) is built up from uprights (2, 3) placed between troughs (4, 5) against which panels are placed. An upright (3) has two U-shaped metal profiles (7, 8) with attached hook elements (9) which pivot around a hinge point (11). Wall panels (6) with gypsum layers (12, 13) have recesses or blind holes in which eyes (14) are clamped.
Patent NL-9001876-A (NL)
Title: Parasol with polygonal cloth - has cloth-fixing points only at periphery with none at centre
IPC: A45B23/00
Filed: 1990-08-24
Abstract: The parasol has a polygonal and preferably rectangular cloth forming a continuous surface. The cloth has no fixing points at the centre, and is held taut by a combination of variation of the vertical distance between the highest point on the central column and the tension occurring at the mounting points along its periphery. A structure is provided to prevent twisting in relation to the column.
Patent NL-9100929-A (NL)
Title: Pump for viscous and abrasive fluids - which has flexibly divided pressure and fluid chambers, which hydraulically drive two double-action pistons rigidly connected within cylinder
IPC: F04B43/00
Filed: 1991-05-30
Abstract: A flexible tube (3) divides a closed casing (1) into two. The outer chamber (4) contains the pressure medium, where the inner chamber (5) contains the fluid to be pumped. The ends of the tube are stiffer than the middle. Two double-action pistons (11), rigidly connected by a stem (12), are driven hydraulically in their cylinder (10,13). Negative pressure in the outer chamber causes the flexible tube to balloon outwards, drawing fluid into the inner chamber via the lower non-return valve (6). Positive pressure compresses the flexible tube to expel the fluid via the upper non-return valve.
Patent PT-65318-A (PT)
Title: Submersible painting apparatus controllable along
IPC: B63C11/52
Filed: 1976-07-05
Abstract: The painting machine consists of a vehicle which is remotely controlled, and able to travel longitudinally along the surface to be painted. The machine is capable of adhering to the surface being painted. The brushes are mounted on the machine which is held by vacuum onto the surface and is capable of being steered by the wheel. Control is effected from an adjacent floating craft, connected to the machine by a control cable. There is a feed mechanism for the supply of paint to the brushes.
Patent PT-75208-A (PT)
Title: Process for preparing of a eucalyptol composition
Inventor: ZUPAN JACOB A
IPC: A61K47/00
Filed: 1982-07-07
Abstract: Greatly enhanced delivery of a wide variety of bio- , affecting agents is provided by formulations for topical application comprising at least one bio-affecting agent and eucalyptol. Optionally, the formulation can further comprise a non-toxic topical carrier and/or an additional penetration enhancer. The eucalyptol acts as a unique transport agent which readily delivers the active bio-affecting agent across the stratum corneum to the target area. Cosmetic and therapeutic dermatological agents as well as systematically effective therapeutic agents can be easily formulated with eucalyptol and effectively delivered through the skin to the desired site, i.e., to the underlying tissues of the epidermis and dermis or to the general circulation.
Patent PT-79903-A (PT)
Title: Improved arrangement relating to form set-up
Inventor: PAUL ASCHWANDEN
IPC: F42B8/26
Filed: 1985-01-30
Abstract: In an explosive practice hand grenade a ring containing inorganic particles is encased in a shell and substantially completely enclosed by an explosive charge. The ring is practically pulverized during detonation so that no effective fragments are formed. The ring is manufactured by compressing a metal or metal oxide powder. The inventive explosive practice hand grenade has substantially the same properties or characteristics as a combat-duty fragmentation hand grenade, however, has the advantage that the inventive explosive practice hand grenade, during its explosion, generates only a minimum fragment action and thus ensures the safety of personnel to be trained.
Patent PT-84216-A (PT)
IPC: B65B5/04
Filed: 1987-01-29
Abstract: A packing machine for food products comprising a conveyor (20) for carrying the food products to be packaged, and a conveyor (16) for carrying open-topped containers (11) adapted to travel towards and to pass beneath the forward edge of the food-product carrying conveyor (20) characterised in that, at least at this position, the container-carrying conveyor (16) is inclined downwards in the direction of travel at an acute angle of less than 60 DEG  to the horizontal and adapted to travel discontinuously so that when a container (11) is positioned at successive stopping positions beneath the forward edge of the food-product carrying conveyor (20) the food products (21) may fall off the said forward edge consecutively into the container until the container is filled with the food products in a compact row.
Patent PT-94676-A (PT)
Title: Process for the preparation of taxol derivatives and pharmaceutical compositions containing them
Inventor: STELLA VALENTINO J
IPC: A61K31/335
Filed: 1990-07-12
Abstract: The invention relates to a process for the preparation of a compound of formula II <IMAGE> which comprises reacting the taxol with a compound of formula IV <IMAGE>
Patent PT-95928-A (PT)
Inventor: LEFEVRE DIDIER
IPC: C12Q1/06
Filed: 1990-11-19
Abstract: The present invention relates to a reagent and to a method of using the same for automatically determining at least one leukocyte sub-population from a total blood sample. Using this reagent, it is possible, in a single step, to lyse the erythrocytes through the action of saponin and SDS, as well as to ensure the differential staining of the leukocyte sub-populations, at the same time preserving the integrity and morphology of the cells, through the combined action of various components including chlorazol black, an alcohol, a surfactant and preserving agents. The reagent according to the invention can be applied to different types of automatic flow cytometry analyzers.
Patent PT-98865-A (PT)
Inventor: MUELLER RICHARD AUGUST
IPC: A61K31/50
Filed: 1991-09-05
Abstract: The present invention relates to phenolic thioetheramides of the formula   <IMAGE>   wherein R1 and R2 are tert-alkyl or phenyl, Alk1 and Alk2 are alkylene; X is sulfur or oxygen, m is 0, 1, or 2; and R is    <IMAGE>  a)  wherein R3 and R4 are hydrogen or alkyl and Alk3 is alkylene; or     <IMAGE>  b)  wherein Y is CH, N, O, or S; R6 is hydrogen, alkyl, phenyl, substituted phenyl, benzyl, substituted benzyl or a heterocyclic amine; and R7 is hydrogen or alkyl. The compounds inhibit 5-lipoxygenase and are useful in the treatment of inflammation and allergic conditions.
Patent SE-8803737-A (SE)
IPC: B29C48/94
Filed: 1988-10-19
Abstract: The invention relates to a method and an apparatus for manufacturing hollow tubular bodies having a circular, internal cross-sectional shape, from a compressible material. A mixture of plastics material and a filling material, with the plastics material preferably in a molten state, is supplied to a first space defined by an inner core or mandrel (4) and an outer matrix (5), where the mixture is subjected to compression. The compressed material (B) is pressed to a second space (6) between a rotatable core (7) and the matrix (5), where the plastics material solidifies. A part of the rotatable core (7) has an elliptical cross-sectional shape and the core (7) functions to impart a circular internal cross-sectional shape to the hollow tubular body during its manufacture.
Patent SI-9700265-A (SI)
Title: Energy control system for heating combustion chambers
Inventor: ROBINIK ROK
IPC: F27D19/00
Filed: 1997-10-16
Abstract: Subject of the invention is a system for energy control of combustion chambers. The system according to the invention controls the energy ratio, particularly energy losses of central heating combustion chambers of residential and other premises. By identifying the properties and particularly modification of properties in the combustion chamber, it allows cost-effective use of energy resources. Special about the system according to this invention is, that at the exit of the boiler (1) leading to the radiators (7), there's a calorimeter (19) and that the energy is supplied to the burner (2) trough the flow-meter (6), while the electric signals of the flow-meter (6) and calorimeter (19) are led to an interface (14) connected to a PC (15, 20) which monitors the energy losses of the combustion chamber by calculating the energy input - output ratio.
Patent UA-6591-A (UA)
Title: Device for freezing bio-material in containers
Filed: 1986-12-14
Abstract: Device for freezing bio-materials in containers has Dewar vessel for liquid nitrogen, heat-insulated body, filling of material with high heat conductivity and low heat capacity, temperature controlled, temperature indicator and heater. The body is equipped with crystallization initiator arranged as insert made of material with low heat capacity and high heat conductivity installed over the filling and separated from it with heat-insulation pad.
Patent UA-6723-A (UA)
Title: Method for formation of blast-safe curtain at blast operations
Filed: 1991-02-25
Abstract: The method includes placement of packs with inhibitor powder in face of working and sputtering with explosion. Packs with inhibitor powder are placed directly on earth of working as piles not less than two, those contain at least 4 packs in each, placed along axis of working at distance 2-3 m one from another and 1-1.5 m from first pile to front of working, at that the charge of explosive substance is installed on the lower pack.
Patent BG-100062-A (BG)
Title: Metod for automatic delay of switching on or off of one or more incandescent electric lamps and device for the materialization of this effect
Inventor: STEFANOV VENTSISLAV G
IPC: B60Q1/04
Filed: 1995-10-12
Abstract: The method and the device are designed for avoiding the current rush on the incandescent wires of the lamps and the abolition of the light discomfort during switching on/off or reswitching of lighting. By the method the electric power is fed gradually to the lamps where part of it is accumulated in an accumulation element and is used for extending the period of switching off. The change of the incandescent wire-used power during switching on/off is explained in the diagram, where d means optimization of switching on of the known standards of technology, e is the optimization of switching on achieved in accordance with this invention, f is optimization of swithcing off in accordance with this invention. The device for the materialization of the method contains a  controllable semiconductor switch connected to the lamp in series. Parallel to the switch a circuit of a capacitor and photoreceiver is connected in series, the common point of which is connected at a threshold element to the controlable switch electrode.