baber/WOPTO huggingface dataset:
Patent WO-03037634-A1 (WO)
Title: Cartouche d'encre pour imprimante
Inventor: XIAO QINGGUO
IPC: B41J2/175
Filed: 2002-10-15
Abstract: L'invention concerne une cartouche d'encre pour imprimante comprenant un corps de cartouche présentant une chambre d'encre. Sur un côté du corps de cartouches est pratiqué un orifice d'apport d'encre et sur le côté opposé se trouve un passage d'air. La chambre d'encre se compose d'une chambre principale et d'une chambre auxiliaire de communication, un prisme d'inspection de l'encre éjectée se trouvant à proximité de la partie de communication. Il est prévu un clapet de non retour assurant la communication entre la chambre auxiliaire et l'orifice d'apport d'encre qui vient entre les parois latérales adjacentes à l'orifice d'apport d'encre. Selon cette invention, le volume nominal de chaque cartouche d'encre augmente, et le fait que l'alimentation en encre continue après l'envoi d'un signal indiquant que l'encre a été éjectée ne pose aucun problème pour les matières non poreuses. Le clapet de non retour disposé de part et d'autre des parois latérales améliore la fabricabilité et la stabilité de la distribution de l'encre.
Patent WO-9532841-A1 (WO)
Inventor: MOH JEFFREY
IPC: B25B1/16
Filed: 1994-11-11
Abstract: A vice with pre-clamping function comprises a fixed vice body (4), a moving vice body (5) and a screw (7), it is characterized in that it provides a leverage including a lever (1) and a bushing (2), the fulcrum of the lever (1) located in the fixed on the screw (7) and positioned by a retainer ring (3). There is a ring groove on the bushing (2), an end of the lever (1) projected into the ring groove, the other end of the lever (1) forms a pedal extending down out of the fixed vice body (4). The present invention has advantages of operating easily and work-clamped exactly, by applying a pre-clamping force on a work through a foot-pressing force. Compared with the known art, it needn't adjust the work repeatedly and can be operated only by one person, thus increasing the production efficiency.
Patent WO-9947244-A1 (WO)
Inventor: LIN KE
IPC: B01D53/52
Filed: 1999-03-03
Abstract: A desulfurizer comprising Ca2Fe2O5 as active the component and a process of making the same are disclosed. The process comprises the following steps: a) mixing the powder comprising iron oxide and/or hydroxide and/or nitrate with the powder comprising calcium oxide and/or carbonate and/or bicarbonate, where the molar ratio of iron/calcium is between 1:1 to 1:5; b) shaping the mixture obtained in step, a) then drying; and c) sintering the article obtained in step b) under oxidative atmosphere at a temperature 700 to 1100 °C for 0.5 to 24 hours.
Patent CU-22283-A1 (CU)
Inventor: SALAS OLIVET EVA
IPC: C22B11/08
Filed: 1987-08-17
Abstract: SE RELACIONA CON EL PROCESO HIDROMETALURGICO DE EXTRACCION DE ORO CON                               SOLUCIONES DILUIDAS DE CIANURO; ESPECIFICAMENTE EL PROCESAMIENTO DE                                 CONCENTRADOS SULFURADOS DE ORO CONSIDERADOS COMPLEJOS. LA ESENCIA DE LA                             INVENCION SE CARACTERIZA POR LA COMBINACION DE ADITIVOS DE FORMA SOLIDA                             (<CHEM> MNO <SB>2</SB>-NAOH</CHEM>- NAOH) QUE ORIGINAN LA RAPIDA DISOLUCION                         DEL ORO EN SOLUCIONES DILUIDAS DE CIANURO POR LA PRESENCIA DE PIROLUSITA                            COMO PORTADOR DE CATALIZADORES. LA ARSENOPIRITA PRESENTE EN LA MUESTRA, AL                          IGUAL QUE LA ANTIMONITA Y PIRITA, POSIBLEMENTE CON EL PRETRATAMIENTO                                ADQUIEREN CIERTA POROSIDAD, PERMITIENDOSE EL CONTACTO DEL CIANURO CON EL                            ORO INCLUIDO EN ELLAS, LO CUAL DEBE INCIDIR EN LOGRAR QUE LA VELOCIDAD DE                           DISOLUCION DEL MISMO ALCANCE EL ESTADO DE EQUILIBRIO RAPIDAMENTE BAJO EL                            EFECTO DE LOS ADITIVOS UTILIZADOS.\!
Patent WO-0129386-A1 (WO)
Title: Verfahren zur bestimmung von betriebsgrössen einer brennkraftmaschine
Inventor: BAEUERLE MICHAEL
IPC: F02D41/22
Filed: 2000-08-10
Abstract: Mit dem erfindungsgemässen Verfahren wird mit Hilfe eines für den Turbolader erfassten Verdichterkennfeldes, welches den Zusammenhang zwischen der Turbinendrehzahl (nt), dem Verhältnis der Luftdrücke (ld, sd) auf der Druck- und der Saugseite des Verdichters und dem dem Verdichter zugeführten Luftmassenstrom (lm) im Saugrohr auf der Saugseite des Verdichters angibt, eine dieser Grössen bei Vorgabe der anderen Grössen hergeleitet. Für diese hergeleiteten Grössen können entsprechende Sensoren eingespart werden. Ausserdem können die hergeleiteten Grössen auch zur Diagnose der die gleichen Grössen messenden Sensoren herangezogen werden.
Patent WO-0139399-A1 (WO)
Title: Verfahren zum abbilden von formatkennungs-bits auf einen in einem komprimiermodus zu sendenden rahmen
Inventor: SENNINGER CHRISTIAN
IPC: H04J3/00
Filed: 2000-11-24
Abstract: Im Komprimiermodus ('Compressed Mode') stehen mehr TFCI-Stellen als TFCI-Bits zur Verfügung. Um auch die überschüssigen TFCI-Stellen mit Bits zu besetzen und dabei eine möglichst große Leistungsfähigkeit zu erzielen, wird für den Uplink und/oder den Downlink eine geschickte Repetierung der TFCI-Bits vorgeschlagen.
Patent WO-0159609-A1 (WO)
Inventor: GUENTZER ULRICH
IPC: G06F17/30
Filed: 2001-02-08
Abstract: The invention relates to methods by means of which the objects that resemble best a pattern object are selected from a plurality of objects in an efficient manner. The number of the objects to be considered is limited by means of efficiently calculated threshold values. According to the methods, search strategies use the values of the characteristics pertaining to the objects to be considered for an efficient search strategy.
Patent WO-0177517-A1 (WO)
Title: Verfahren zur dichtheitsprüfung einer tankentlüftungsanlage eines fahrzeugs
Inventor: FRITZ THORSTEN
IPC: F02M25/08
Filed: 2001-03-15
Abstract: Ein Verfahren zur Dichtheitsprüfung einer Tankentlüftungsanlage eines Fahrzeugs, wobei man mittels einer Druckquelle (50) über ein vorgegebenes Zeitintervall einen Überdruck oder Unterdruck gegenüber dem Atmosphärendruck abwechselnd in die Tankentlüftungsanlage und ein zu dieser parallel geschaltetes Referenzleck (81) definierter Größe einbringt und wenigstens eine Betriebskenngröße der Druckquelle beim Einbringen des Drucks in die Tankentlüftungsanlage (Tankmessung) sowie beim Einbringen in das Referenzleck (Referenzmessung) erfasst, miteinander vergleicht und bei einer Abweichung der Tankmessung von der Referenzmessung um einen vorggebbaren Wert auf ein Leck schließt, ist dadurch gekennzeichnet, dass man aus dem zeitlichen Verlauf der Betriebskenngröße bei der Tankmessung auf die Funktionsfähigkeit des Tankentlüftungsventils (30) der Tankentlüftungsanlage schließt.
Patent WO-0188366-A1 (WO)
Title: Einspritzanordnung für ein kraftstoff-speichereinspritzsystem einer verbrennungsmaschine
Inventor: STOECKLEIN WOLFGANG
IPC: F02M63/00
Filed: 2001-03-24
Abstract: Es wird eine Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem vorgeschlagen, mit einer in einen Brennraum ragenden, aus einem Hochdruck-Kraftstoffverteiler (10) über einen Hochdruck-Kraftstoffversorgungsweg (14, 52, 44, 40) mit Kraftstoff versorgbaren Einspritzdüse (16) und einer diese abhängig vom Druck in einer Steuerkammer (58) öffnenden und schließenden Düsennadel (30). Zur Kraftstoffeinleitung in die Steuerkammer mundet ein von dem Kraftstoffversorgungsweg abzweigender Zulaufkanal (62) in diese, und ein von dieser ausgehender Ablaufweg (66, 78) ermöglicht den Kraftstoffablauf aus der Steuerkammer. Mittels eines Absperrventils (70) ist ein stromabwärtiger Abschnitt (66') gegenüber einem stromaufwärtigen Abschnitt (66') des Ablaufwegs sperrbar. Der stromabwärtige und stromaufwärtige Abschnitt des Ablaufwegs münden in eine Ventilkammer (78), in der ein Absperrelement (76) verstellbar ist. Von dem Kraftstoffversorgungsweg ist ein in den Ablaufweg mündender Bypasskanal (74) zur Einleitung eines zusätzlichen Kraftstoffstroms in die Steuerkammer abgezweigt. Um das Strömungsverhalten beim Kraftstoffabfluß minimal zu stören, liegt die Einmündungsstelle des Bypasskanals in den Ablaufweg im Bereich der Ventilkammer.
Patent WO-0196157-A1 (WO)
Title: Articulation destinee a un essuie-glace de vehicules
Inventor: HERINCKX DIRK
IPC: B60S1/38
Filed: 2001-06-07
Abstract: L'invention concerne un essuie-glace de véhicules, composé d'une armature porteuse (1) destinée à être reliée à un bras d'essuie-glace fixé au véhicule, l'armature porteuse (1) présentant une section transversale essentiellement en forme de U et au moins une ouverture d'encastrement (10) d'armature porteuse, d'au moins une armature inférieure (2) destinée à être reliée à une lame d'essuie-glace, l'armature inférieure (2) présentant une section transversale essentiellement en forme de U ainsi qu'au moins une ouverture d'encastrement (15) d'armature inférieure, et étant au moins partiellement enveloppée par l'armature porteuse (1), d'une articulation (3) destinée à l'articulation de la ou des armatures inférieures (2) sur l'armature porteuse (1), l'articulation (3) présentant au moins un élément d'encastrement (24) d'armature inférieure destiné à l'encastrement avec la ou les ouvertures d'encastrement (15) d'armature inférieure, et d'au moins un élément d'encastrement (22) d'armature porteuse destiné à l'encastrement avec la ou les ouvertures d'encastrement (10) d'armature porteuse, ledit élément d'encastrement (22) d'armature porteuse étant logé dans une poche (20).
Patent WO-0224404-A1 (WO)
Title: Elektrohandwerkzeug mit funktionserweiternden anbauten
Inventor: BERGNER JOAO
IPC: B23Q1/48
Filed: 2001-09-08
Abstract: Die Erfindung bezieht sich auf ein Elektrohandwerkzeug (6) mit einem in einem Gehäuse aufgenommenen Elektromotor, welcher ein spanabhebendes Werkzeug (8) antreibt. Am Aufnahmefuß (3) des Elektrohandwerkzeuges (6) ist die Aufnahmesektion (14) einer Aufnahmeschiene (1) verrastbar aufgenommen. An dieser ist ein eine Zirkelspitze (12) aufweisenden schlittenförmiges Bauteil aufgenommen und/oder ein Parallelanschlag (9, 10) verstellbar positioniert.
Patent WO-03041220-A1 (WO)
Inventor: GOTTWALD FRANK
IPC: H01Q5/378
Filed: 2002-08-31
Abstract: L'invention concerne un ensemble antenne pour un dispositif d'émission et de réception radar. L'invention vise à créer un ensemble antenne à gain élevé nécessitant une dépense relativement faible. A cet effet, l'ensemble antenne selon l'invention comprend une couche de masse (2), au moins une couche d'écartement (5) déposée sur la couche de masse (2), une couche support (8) déposée sur la couche d'écartement (5), ainsi qu'au moins une plaque antenne plane (10) qui est réalisée sur une face (8), orientée vers la couche de masse (2), de la couche support (8) et qui s'étend pratiquement parallèlement à la couche de masse (2).
Patent WO-03093019-A1 (WO)
Title: Druckpatrone
Inventor: WU JUNZHONG
IPC: B41J2/175
Filed: 2003-04-26
Abstract: Eine Druckpatrone weist einem Tintentank (4) und einem Druckregler, der sich im Tintentank (4) befindet auf. Dabei umfasst der Druckregler ein vorderes Ventilteil (4), ein hinteres Ventilteil (8), eine Ventilfolie (7) und eine Feder (3'). Die Ventilfolie (7) befindet sich zwischen dem vorderen Ventilteil (5) und dem hinteren Ventilteil (8) und die Feder (3') befindet sich zwischen der Ventilfolie (7) und dem vorderen Ventilteil (5). Außerdem ist am hinteren Ventilteil (8) eine Rinne (12) vorgesehen, in der sich eine Öffnung (14) befindet, und an der Ventilfolie (7) ist eine Ventilfolienöffnung (15) vorgesehen. Dabei wird die Ventilfolienöffnung (15) mittels der Feder (3') in die Öffnung (14) der Rinne (12) gedrückt, wobei im zusammengedrückten Zustand der Feder (3') die Ventilfolienöffnung (15) mittels der Öffnung (14) mit der Rinne (12) verbunden ist.
Patent WO-2004041571-A1 (WO)
Inventor: THEUERKAUF JUERGEN
IPC: B60J7/12
Filed: 2003-11-05
Abstract: Disclosed is a hood (1) for a convertible (2), comprising a tail end/roof segment (6), a front roof segment (8) and at least one central roof segment (7). The roof segments (6, 7, 8) comprise opposite roof frame profiles (9, 10, 11) which are symmetrical in relation to a longitudinal axis (33) of the vehicle and can be folded together in a Z-shape by means of a folding mechanism. In order to reduce the packing height of the hood (1), the roof segments (9, 10, 11) lie substantially on top of each other in a parallel manner in a folded position when the hood is open (1) and the outer roof frame profiles (10) of the at least one central roof segment (7) are rotated about an axis, which is at least approximately parallel to the longitudinal axis (33) of the motor vehicle, by means of a guide device (21) in relation to a position when the hood is closed and are displaced in the direction of the centre of the vehicle.
Patent DE-1802548-A1 (DE)
Title: Coating textile material
Inventor: HEINZ FLEISSNER DR
IPC: D06B9/00
Filed: 1968-10-11
Abstract: Continuous treatment of wet textiles By passing the fabrics through a hot air or hot steam environment, at temperatures greater than the evaporation point of the solution used for dyeing, finishing, bonding, lightening and the like, the fixing process is accomplished and the evaporated solution is recovered for further use. The fabrics are carried on perforated drums, and held in place by suction for exposure to drying blasts, infra-red rays or other heat treatments for drying. A folding device packs the fabric for storage.
Patent DE-1912248-A1 (DE)
Title: Anode support for electroplating baths
Inventor: FRITZ GUTH DR HANS
IPC: C25D17/10
Filed: 1969-03-11
Abstract: Apparatus consists of a strip metal support, e.g. of Ti, resistant to the action of electroplating baths. The metal overlaps the contact rail and the anode well, to ensure a good current. The strip is joined to the anode through a hole in its lower end with elements of pure, chemical-resistant plastics.
Patent DE-1940968-A1 (DE)
Title: Cleaning mechanical appts etc with a wash- - ing liquid
Inventor: SCHMITZ RUDOLF
IPC: H02B1/01
Filed: 1969-08-12
Abstract: The components are sprayed with recycled filtered washing liquid in a washing chamber. The liquid is first collected from the chamber in a collecting basin below which feeds the liquid reservoir via an overflow arranged above the basin sump. The latter is emptied via a valve. The reservoir has a suction pipe, which is mounted above the base and which recycles the water to the chamber. The reservoir sump is emptied by a valve.
Patent DE-1957410-A1 (DE)
Title: Paper industry nonwoven felt prepn
Inventor: KURATKO A DR-ING
IPC: D04H13/00
Filed: 1969-11-14
Abstract: The felt for the paper producing industry is made up of a sandwich construction where the carrier is a woven fabric, plastic or metal screen with one-sided or two-sided layers of nonwoven fabric. The latter is bonded to the base by adhesive and needling which imparts an enhanced tensile strength to the felt.
Patent DE-2005220-A1 (DE)
Title: Metallurgical furnace flue gas removal plant
IPC: F27D17/00
Filed: 1970-02-05
Abstract: Drawing off, afterburning and cooling of hot flue gases from steel crucible type melting furnace is performed so that no excessive heat is generated in the pipe and ancillary plant used. The gases are diluted with cold air introduced peripherally into the pipe carrying the gases. The gases are burnt with this air in a section of pipework provided with cooling air passed over fins on the outside of the pipe. An outer pipe is provided for the air passed along the pipe, the air being drawn through by a suction fan.
Patent DE-2011507-A1 (DE)
Title: Silicate expanding furnaces
IPC: F27B7/00
Filed: 1970-03-11
Abstract: Furnace, for expanding silicates, pref. igneous rocks and earths, comprises a rotary furnace for preheating the crude granulate, a shaft furnace for sintering the surface of the granulate, and a rotary furnace for the expanding process. Specif. the shaft furnace heating gases may be used to preheat the granulate in the rotary furnace.
Patent DE-2014607-A1 (DE)
Title: Making tyre breakers from cable or cord
IPC: E06B7/20
Filed: 1970-03-26
Abstract: Preset length of cord is laid on surface of support in a given path. The cord and the support have a pressure adhesion affinity for one another. The cord is laid as it and the surface move relatively to place it in given orientations on the surface, and is pressed against the surface by a rolling force near its contact point with the surface, to cause adhesion on the surface. Apparatus is described.
Patent DE-2063222-A1 (DE)
Title: Different density fluid filled etching tank - with vertically displacable fluid layers
IPC: C23F1/08
Filed: 1970-12-22
Abstract: Articles are subjected to chemical removal or etching treatment by being placed into a vessel containing several layers of different specific gravity fluids the vertical position of which in the vessel are being varied. Pref. a neutral fluid layer is provided above and below the etchant column and the height variation of the layers is effected by a U-tube arm with a piston for displacing the liquid in it. Etching of materials with asmophere excluded without manipulation of workpiece to contact it with the various fluids.
Patent DE-2065171-A1 (DE)
Title: Wadding - from waste fibre material using pressure shredding - and combing to give irregular crimping and interlock
IPC: D01G11/02
Filed: 1970-01-26
Abstract: The waste material, of continuous synthetic fibres, is passed to the pressure shredders where it is held and torn to give stretched staple fibres, and then passed into a combing roller to allow the irregular crimping to give an irregular interlock, simulating the coiled pattern of natural fibres in a usable wadding.
Patent DE-2112581-A1 (DE)
Title: Refractory wall for heat treatment furnaces - with air cavities
Inventor: STRUZIK ERICH
IPC: F27D1/10
Filed: 1971-03-16
Abstract: The air cavity is between the outer furnace housing and the refractory lining. The wall construction comprises anchoring pins welded to the inside of the housing at right angles. The pins have split ends and are fitted with spacing discs for the support of expanded metal netting onto which a gas tight insulating refractory layer is sprayed. Additionally other heavier anchoring pins, which are also anchored in the outer wall, project through the expanded metal and the sprayed refractory right into the monolytic inner furnace lining. The furnace lining is gas tight and has excellent thermal insulating properties and is suitable for protective gas atmosphere industrial heating furnaces.
Patent DE-2113156-A1 (DE)
Title: Rotary furnace ore volatilising - with basic roll slug adjustment,for recovering esp iron and copper
Inventor: ESCH UDO DR
IPC: C22B7/04
Filed: 1971-03-18
Abstract: Recovery of Gp. IIB and IVB metals (esp. Zn, Pb, Cd) and metal cpds. by rotary furnace method of volatilising ores with simultaneous recovery of Gp. VIII and Gp. Ia metals (esp. Fe and Cu) from roll salg, and in which metal-contg. material is heated together with solid C-contg. material while supplying O2-contg. gases to rotary furnace, is effected by process where feed charge compsn. is adjusted so that a 0.25-0.45 (0.32-0.4) CaO:SiO2 ratio is maintained in roll slag obtd. Concentrate obtd. from slag is useful scrap substitute for Cu cementation, and may also be charged, e.g. after briquetting, to a Pb blast furnace. Pref. max. working temp. in rotary furnace is 1200-1450 (1300-1400) degrees C. Roll slag for recovery of Gp. VII and Gp. IA metals and/or metal cpds. is worked up hydromagnetically, pref. at 300-900 (400-700) Gauss field intensity.
Patent DE-2135999-A1 (DE)
Title: Grouted cable anchorage - has plastic grout penetrating cable and contg aggregate around cable
Inventor: RADEMACHER CARL-HEINZ
IPC: E02D5/80
Filed: 1971-07-19
Abstract: A method of anchoring a cable in a tube embedded in a foundation uses a solidifying grout, opt. also anchoring and spacing devices. The grout is a polymerisable plastic or mixture thereof, esp. a 2-component elastomer or thermosetting plastic, opt. with hardeners, plasticisers, corrosion inhibitors etc., and penetrates between the wires or strands of the cable. Before, during or after injection, filler material or aggregate is introduced into the space between cable and tube. Specif., the aggregate occupies 50-80% of the annular space. Two different strength zones of grout are used. Aggregates may include foamed glass; the corrosion inhibitor may be Zn chromate.
Patent DE-2159227-A1 (DE)
Title: Sand foundry mould - with lost pattern feeder system
Inventor: VITT GERHARD
IPC: B22C9/08
Filed: 1971-11-30
Abstract: The gate system for casting porosity free castings in sand moulds includes a lost pattern feeder arrangement, in which the gate is supported by a support. In the zone between the gate and the feeder pattern, the mould material is in contact only with the support or cores supported by it e.g., a breaking off section core. The system relieves the lost pattern of most of the compacting pressures from the moulding material on making of the mould, thereby preventing elastic deformation and cracks in sand.
Patent DE-2202009-A1 (DE)
Title: Automatic mercury determination - in liquid medium using apparatus with programme unit
Inventor: BUSCH HANS JOACHIM
IPC: B65H54/553
Filed: 1972-01-17
Abstract: Continuous automatic determination of Hg(as Hg metal, Hg ion or organo Hg cpds. such as phenylmercury) by metering aqs. hydrazine soln. and aqs. salt soln. (e.g. halides, sulphates or nitrates of Cu++ or Ti4+) to a washing zone with a carrier gas such as air, separating the aqs. components and pyrolysing the carrier gas and passing it to a reference zone to automatically set the reading to zero then injecting a metered amount of the sample liquid to be examined for Hg content into the aqs. soln. mixture in the washing unit and examining the pyrolysed carrier gas for Hg content e.g. photometrically by measuring the absorption at 2537 angstroms. Pref. the sequence of metering components and recording the results is controlled by an automatic programme unit.
Patent DE-2207802-A1 (DE)
Title: Tennis racket - with blow moulded, fibreglass reinforced plastic tubular frame filled with synthetic foam
Inventor: VOELKL FRANZ
IPC: A63B49/10
Filed: 1972-02-18
Abstract: The frame and adjacent stem section are reinforced with high tensile fibres in or adjacent to the outer layers in which the fibre reinforcement has >=1 tubular fabric layer formed from two systems of fibres crossing each other at the same angle to the length of the tube and enclosing the whole cross section of at least the frame rod. Pref. the hollow frame and stem are filled with a rigid synthetic foam and a thin layer of flexible plastic material is arranged between the fibre reinforced plastic and the synthetic foam.
Patent DE-2227004-A1 (DE)
Title: Disposing of sewage - by combustion, giving synthesis gas
Inventor: BRENT ALBERT
IPC: C02F11/12
Filed: 1972-06-02
Abstract: In a process for disposing of sewage, comminuted waste and solid waste and/or conc. and dehydrated sewage and solid waste are mixed with a combustible liq. hydrocarbon, a slurry of such a hydrocarbon with C particles, an aq. slurry of C particles and/or water, as flow-auxiliary, to give a reaction mixt., which is led into a non-packed, non-catalytic free-flow gas generator, where the reaction mixt. is partially oxidised with a gas contg. free O2 and steam, under the normal conditions of the synthesis gas or heating gas reaction, to give a hot gaseous end-prod. contg. H2, CO, CO2, water and C particles. A cheap, continuous process is provided, giving a useful by-prod., e.g. synthesis gas. Discharge of waste into rivers is avoided.
Patent DE-2236355-A1 (DE)
Title: Chip/fibre feed appts - for auxiliary support grid during multi-level press charging
IPC: B27N3/22
Filed: 1972-07-25
Abstract: Designed to feed a multi-level press for the prodn of chipboard or fibreboard sheeting, a static support grid is exposed when the charging unit deposits feed material onto the press levels, for the conveyors to maintain a continuous feed of material, the feed from the support grid passing into the empty charging unit when it returns from the press. The purpose is to decrease charging time to give higher prodn.