baber/WOPTO huggingface dataset:
Patent CH-646791-A5 (CH)
Inventor: BOSCHUNG MARCEL
IPC: G01N25/04
Filed: 1980-07-14
Abstract: 1. Arrangement for determining the freezing point of a liquid situated on a roadway or taken from the roadway, having a cooling device and an arrangement for measuring the temperature of the liquid, which arrangement is connected to an evaluating device for ascertaining and indicating the freezing point of the liquid, characterized in that a heat-conductive plate (6) is heat-conductively connected to the cooling device (9, 10), that there is a recess (7) in the central region of the heat-conductive plate (6), that a single temperature sensor (8) is embedded in the recess (7) by means of a heat-insulating compound (13), and that the evaluating device comprises means (25, 26, 27, 28) for ascertaining and indicating the freezing point of the liquid as a function of the temperature gradient derived from a series of periodic temperature measurements.
Patent CH-641780-A5 (CH)
Title: 1,4-Dihydropyridine-3,5-dicarboxylic acid esters
Inventor: PIGEROL CHARLES
IPC: C08K5/3432
Filed: 1982-12-06
Abstract: The compounds of formula <IMAGE>  where R is defined in Claim 1, are described. These compounds can be used for stabilising vinyl resins, including copolymers, with respect to heat and light. The thus stabilised compositions are useful for manufacturing food packagings made of plastic, floor-covering tiles or recording discs.
Patent CH-577079-A5 (CH)
Title: Pile foundation static ground testing system - has test pile loaded by hydraulic press on loading bridge
IPC: E02D33/00
Filed: 1974-05-31
Abstract: The load bearing pile foundation is made by ramming at first a system of piles used for examining the ground. A prefabricated concrete trial pile is driven into ground between a number of piles subjected to tensible loading by a bridge by means of which trial static loads are imposed on the concrete pile. This arrangement is used to simplify the ground investigation and ramming load magnitude finding stage. Hydraulic press exerts force between the upper end of the trial pile and the bridge. The loading test is carried out by progressive loading of trial pile and a load and displacement diagram is drawn for establishing load carrying capacity of ground.
Patent CH-614738-A5 (CH)
Title: Weldable cast steel with a high elastic limit
Inventor: GEYMOND ROBERT H
IPC: C22C38/04
Filed: 1975-06-26
Abstract: A weldable cast steel with a high elastic limit containing, besides iron, minimum quantities of carbon, manganese, molybdenum, silicon, vanadium, niobium or tantalum, aluminium, titanium, nickel, chromium, sulphur and phosphorus with a very finely grained microstructure, consisting of bainite of low carbon content and ferrite hardened by the presence of fine precipitates of complex molybdenum, vanadium and niobium or tantalum carbonitrides, this steel being weldable and having an elastic limit higher than or equal to 550 N/mm<2>, an elastic limit/ultimate tensile strength ratio higher than 0.85 and an energy of fracture at -50 DEG C on a V-notched bar higher than or equal to 20 joules. It has undergone a cycle of heat treatments comprising a homogenisation at high temperature, quenching with water and annealing. The steel can be employed for the manufacture of equipment of reduced weight, essentially of equipment assembled by welding, or of single-block equipment.
Patent CH-618028-A5 (CH)
Title: Decorative casing for pocket watch
Inventor: BOUILLE ABEL
IPC: G04B37/22
Filed: 1977-07-10
Abstract: A decorative casing for pocket watch consists of a body (10) and a cover (11), made of cast, moulded or injected metal, which are articulated to one another by a hinge (12). <IMAGE>
Patent CH-610903-A5 (CH)
Title: Process for the preparation of cephalosporanic acid derivatives
Inventor: KAMIYA TAKASHI
IPC: A61K31/545
Filed: 1974-03-29
Abstract: Compounds of the formula <IMAGE> in which R1 denotes an acyl group, R2 denotes an acylaminoalkyl-substituted heterocyclic group containing N or N and S and M denotes a hydrogen atom or a non-toxic, pharmaceutically tolerable cation, are prepared by acylation of corresponding 7-acylamino compounds, whose heterocyclic group has an aminoalkyl substituent on the 3-thiomethyl group. The compounds are novel; they display a potent antibacterial action and can be used in infectious diseases.
Patent CH-633652-A5 (CH)
Title: Capacitor
Inventor: MANDELCORN LYON
IPC: H01G4/012
Filed: 1977-10-10
Abstract: The capacitor consists of metal foil layers (2, 3) which alternate with dielectric spacers (4). The container (1) is filled with a dielectric fluid (8). The spacers (4) consist, for example, of foil (5), paper (6) and foil (7). The dielectric fluid contains the following components:   80 - 99% by weight of a compound having one of the following general formulae: <IMAGE>  or mixtures of these compounds: 20 - 1% by weight of a compound having one of the following general formulae: <IMAGE> or mixtures of these compounds.   In the formulae, the symbols R and the symbols R1 denote identical or different alkyl residues (radicals) having 2 to 4 C atoms. <IMAGE>
Patent CH-617567-A5 (CH)
Title: Pesticides.
Inventor: HUBELE ADOLF DR
IPC: A01N37/46
Filed: 1975-09-30
Abstract: The pesticides contain as at least one active ingredient a compound of the formula I <IMAGE> in which R1 is methyl, ethyl or halogen, R2 is hydrogen, C1-C3-alkyl or halogen, R3 is hydrogen or methyl, R4 is methyl or ethyl, X-CH2- or <IMAGE> and Y is halogen. These compositions are suitable for controlling phytopathogenic fungi.
Patent CH-584516-A5 (CH)
Title: Household ice cream maker - uses a cold cartridge of annular form with pref. perforated piston in the interior for cooling, mixing and aerating
IPC: A23G9/20
Filed: 1974-10-29
Abstract: A household ice cream maker has an insertable cold cartridge, provided with a free inner space of constant cross-section in which a piston and piston rod can be raised and lowered. The piston is pref. formed as a perforated disc which when raised and lowered permits the ice cream to be displaced from one side to the other without difficulty. The ice cream producing apparatus is of very simple construction, easy to operate and to clean and can be produced at a relatively low price.
Patent CH-563950-A5 (CH)
Title: Unsatd cycloaliphatic ketones - by treating diols with acid dehydrating agents
IPC: C07C33/04
Filed: 1971-08-31
Abstract: Unsatd. aliphatic ketones (I) having an isolated double bond on the 1-position or two conjugated double bonds in the 1- and 3-positions as represented by the dotted lines, and R1 and R2 = H or C1-6 alkyl are made by treating a diol (II) contg. a saturated or monounsaturated 6-ring in which the double bond is represented by the dotted lines, with an acid dehydrating agent such as dilute H2SO4. Dehydration may be carried out in the pres. of metal derivatives such as mercuric acetate to increase the yield of (I). Products have organoleptic properties and are esp. useful as perfume and flavour additives, e.g. in foodstuffs.
Patent FR-2053749-A5 (FR)
Title: Bonding rubber to brass-plated steel cords
IPC: C08J5/10
Filed: 1969-07-17
Granted: 1971-04-16
Abstract: Bonding natural rubber to brass plated steel cords.. G1-. is effected with a rubber mixture contg. the usual components for sulphur vulcanisation, e.g. S, carbon black, zinc oxide, and ageing agents, in the presence of nickel chloride, pref. in amt. of 4 pts. per 100 pt. rubber. The rubber mixture may also contain stearic acid and diphenyl nitrosamine.
Patent FR-2058465-A5 (FR)
Title: Portable thermoplastic welding device
IPC: B29C65/22
Filed: 1969-09-09
Granted: 1971-05-28
Abstract: Device is for the production of sealed packages in a thermoplastic sheet, esp. for domestic application and having advantage that it is small and light, easily used and can be used on the domestic power supply. Two arms are hinged together in a pincer form and have at their outer ends cutters and a heating element. The ends are closed over the material to be welded, and the act of closing switched on the power supply to the heating element. A spring retains the arms apart in the rest position.
Patent FR-2033761-A5 (FR)
Title: Cake removal from filter press
IPC: B01D25/12
Filed: 1970-01-23
Granted: 1970-12-04
Abstract: Cake removal from filter press Press has filter plates and frames alternately in a row and connected together by joint linkages so that when a plate is moved, the neighbouring frame can be inclined by the linkage to the other, fixed, plate to permit the removal of the cake from the frame. The plates and frames are connected by a filter cloth, one end of which is fixed to the lower end of a plate and the other to the upper end of the following frame. The end of the next piece of cloth is fixed to the lower end of the same frame, and its other end to the top end of the next plate. The frames are supported on side bars.
Patent FR-2097625-A5 (FR)
Title: Side flap or tailboard for commerica l vehicles of partcorrugated - double-skin panels
IPC: B62D33/023
Filed: 1970-07-16
Granted: 1972-03-03
Abstract: Long panel for commercial vehicle structure is a sandwich of light, rigid filler between two rigid, continuous skins. The skins contact each other along at least one longitudinal rib which forms two strip-like compartments. Specif. at least one skin is synthetic and pref. reinforced. The filler is foamed polyurethane or PVC.
Patent FR-2056565-A5 (FR)
Title: Compression device for use in medical x ray photography
IPC: A61B6/04
Filed: 1970-08-04
Granted: 1971-05-14
Abstract: The compression device consists of a large tube shape which can be inflated, and is made from two flat layers of a material with low X-ray absorption. The two layers are sealed together except for a central section, and have an input tube for compressed air. The side of the device which faces the patient has an elastic face and is extended by the application of the compressed air. This device is far less difficult to handle and less likely to impede investigations than conventional methods.
Patent FR-2056645-A5 (FR)
Title: Chromium-cobalt steel alloy, weldable and - corrosion resistant
IPC: C22C38/30
Filed: 1970-08-06
Granted: 1971-05-14
Abstract: An alloy is prepd. which, after austenization, is used in a soft martensitic state, having up to 300 degrees C a 0.2 limit of at least 60 kg/mm2 and good notch impact strength to -100 degrees C. The alloy comprises the following in wt. %: Co 13-25, Cr 17-22, Mo 0.5-3.0, Ni 0.5-2, Cu 0.3-2, Nb-Ta 0.0.4, Zr 0-0.2, Ca 0-0.2, B 0-0.1, Al 0-.02, C 0-0.03, N 0-0.03, Si 0-0.02, Mn 0-0.5 and the remainder Fe.
Patent FR-2059004-A5 (FR)
Title: Low pressure gas storage
IPC: F17B1/08
Filed: 1970-08-19
Granted: 1971-05-28
Abstract: Low-pressure gas storage bags made of rubber or plastics are held adjustably in a frame of slide bars, sealed to each other and to the base and filled or emptied from the topmost bag via a weighted ring or frame plate used to maintain internal pressure. Rings or horseshoe shaped bags can be used, threaded onto a centre column, with fitments in top flange and seal in the bottom column flange.
Patent FR-2068311-A5 (FR)
Title: Footwear for motorists
IPC: A43B3/00
Filed: 1970-10-07
Granted: 1971-08-20
Abstract: Boot for motorists has a more flexible portion than the rest of the upper, at the level of the Achilles tendon. The portion is pref. of expanded polyurethane, with a lambs wool outer envelope; it envelopes the tendon and a part of the ankle.
Patent FR-2075130-A5 (FR)
Title: Guide pins for injection die casting mould alignment
IPC: B29C45/26
Filed: 1970-12-30
Granted: 1971-10-08
Abstract: An injection casting mould consisting of two halves which are assembled by axial movement towards each other. Each of these halves is made from several parts which are bolted together. The two halves themselves are aligned on assembly by slide guide pins and slide guide bushes which are fitted into varoius placed on the mould contact flanges into axially drilled holes. At least one of these slide guide pins may be replaced by a centering pin, the pin portion of which is shortened and which fits into a mating bush which is mounted coaxially into the corresponding hol in the other mould half. The advantage of a short pin is that it is less likely to be damaged during handling of the mould halves, particularly during ejection of the casting.
Patent FR-2147446-A5 (FR)
Title: Asbestos paper friction lining - contg amosite and chrysotile fibres, has excellent friction properties
IPC: F16D69/00
Filed: 1971-07-28
Granted: 1973-03-09
Abstract: Asbestos friction lining comprises 60-80% paper and 20-40% binder. The paper is composed of 4-30% (pref. 5-14%) amosite fibre 6-96% (pref. 39-51%) chrysotile fibre and 90% (pref. 35-60%) org. fibre. The binder is a P-F resin. The friction lining is easily cooled by liquid (e.g. oil) and shows good friction props.
Patent FR-2225013-A5 (FR)
Title: Anti-burglary electronic alarm for vehicles - is automatically set when car stops, even with ignition key in position
IPC: G08B13/08
Filed: 1973-04-03
Granted: 1974-10-31
Abstract: A small device, this electronic system is automatically set when car stops and may be operated either when restarting the engine or when boot or bonnet are open. A hidden button is used to deactivate it. Basically it is formed by an electro-chemical condenser in parallel with a resistance, both in series with a relay, with 3 pairs of contacts, a button (7) and diode (9). When circuit is closed, the condenser discharges and the relay closes. The first contact keeps it in that position. The second sounds the alarm. This will not be discontinued unless circuit is opened by button (7).
Patent FR-2187175-A5 (FR)
IPC: G10L15/00
Filed: 1973-04-19
Granted: 1974-01-11
Abstract: A system is disclosed which recognizes connected or separate spoken words based on the concatenation of steady state sounds produced by a speaker enunciating a given word for which a definitive array of steady state sounds has previously been entered into the system during a learning period.
Patent FR-2252755-A5 (FR)
Title: Package for domestic appliances furniture etc. - a shallow base tray and top pieces fit together to form a shell
IPC: B65D85/00
Filed: 1973-11-22
Granted: 1975-06-20
Abstract: The package is made for example of expanded polystyrene, which does not require that the object be laid on its side during packing. The package comprises a shallow tray (1) in which the appliance can be stood upright, and at least two upper side sections (2, 3). The edges of the components are made so as to fit together, and bindings placed in external grooves are used to hold them in place. The parts have necessary spaces (5) and holes (12) to suit the object, and the walls are of reduced thickness in places to save weight. Grooves on the internal component faces receive furniture handles, buttons etc.
Patent CH-695951-A5 (CH)
Title: Entry barrier station to control access to buildings or services
Inventor: FISCHER JOSEF
IPC: G07B15/00
Filed: 1999-02-17
Abstract: The access control has transverse arms that block passages wide enough for one person at a time to pass through. The barriers (36) are supported on a central column (1) that has readers for tickets or passes (7,7') facing to the left and to the right. The column houses the electronic units needed to control the reading and the operation of the barriers.
Patent CH-695792-A5 (CH)
Inventor: DIPL-ING HANS JOERG SIDLER
IPC: F16K3/00
Filed: 2002-09-25
Abstract: The device (1) has at least one cylinder (35, 36) housed inside a pressure chamber (40) enclosed by a casing (30).  A sliding plate (10) can be moved transverse to the flow direction in order to block the flow. The plate is connected via a piston rod (25, 26) to a piston (27, 28) driven by a pressurised medium introduced via at least one closure valve (45) from a pressurised vessel to a cylinder work region (46, 47).
Patent DD-151040-A5 (DD)
Title: Fungizides mittel
Inventor: KUCHIKATA MASUO
IPC: A01N47/14
Filed: 1980-03-27
Abstract: Die Erfindung betrifft fungizide Mittel, die neue Alkylenbisdithiocarbaminsaeuresalze als Wirkstoffe enthalten. Die erfindungsgemaeszen Mittel besitzen gegenueber bekannten Mitteln eine ausgepraegtere fungizide Wirksamkeit bei geringer Phytotoxizitaet und Saeugetiertoxizitaet.
Patent DD-151114-A5 (DD)
Title: Verwendung einer begasungseinrichtung bei photochemischen gas-fluessig-reaktionen
Inventor: RAMLOCH HERBERT
IPC: B01J19/08
Filed: 1980-06-13
Abstract: Die Erfindung bezieht sich auf das Gebiet der Photochemie. Ziel und Aufgabe sind es, eine Begasungseinrichtung mit verringertem technischem Aufwand effektiver zu gestalten, d. h., bei optimaler Ausnutzung des UV-Lichts einen verbesserten Stoffuebergang und -austausch zu gewaehrleisten. Dies wird erfindungswesentlich dadurch erreicht,dasz die Begasungseinrichtung aus einem Gasleitungsrohr und einem aufgesetzten Mischbecher besteht, in dessen Boden eine Anzahl Ansaugoeffnungen angebracht sind.
Patent DD-201724-A5 (DD)
Title: Lueftungs- und heizungsanlage bzw. fuehler zur behaglichkeitsmessung
Inventor: MAKARA GYOERGY
IPC: F24D19/00
Filed: 1981-09-11
Abstract: Ziel und Aufgabe ist es, energetisch unguenstige Temperaturschichtungen zu vermeiden und die Lueftung gleichermassen im Sommer wie im Winter ohne Kurzschluss zu gewaehrleisten, die sich bei Strahlenheizung und Lueftung ergebenden Energieeinsparungen besser zu nutzen sowie nicht nur die Lufttemperatur und Strahlungswirkung, sondern auch die Luftgeschwindigkeit messtechnisch zu erfassen. Erfindungsgemaess befinden sich im Raum in die Aufenthaltszone gerichtete Lueftungsoeffnungen, die im Sommer als Zuluft und im Winter als Abluftoeffnungen dienen, bzw. in die Dachzone gerichtete Lueftungsoeffnungen, die im Winter als Zuluft und im Sommer als Abluftoeffnungen dienen. Das Leistungsregelungsorgan der Luftheizeinheit und das der Raumheizung sind ueber einen automatischen Regler und einen Gleichgewichtszustand so zusammengeschaltet, dass im Falle eines durch den Behaglichkeitsfuehler signalisierten staendig zu hohen Behaglichkeitswertes zuerst die Leistung der Luftheizeinheit und danach die der Raumheizung reduziert wird, und im umgekehrten Fall eines staendig zu geringen Behaglichkeitswertes, zuerst die Leistung der Luftheizeinheit erhoeht wird.
Patent DD-208844-A5 (DD)
Title: Verschlusseinrichtung
Inventor: SZEKELY GYOEZOE
IPC: A62C37/20
Filed: 1982-10-27
Abstract: Die Erfindung bezieht sich auf eine Verschlusseinrichtung fuer Spruehkoepfe in Spruehanlagen fuer den Pflanzenschutz. Durch die Erfindung wird eine wirtschaftlich herstellbare, einfache und fernsteuerbare Verschlusseinrichtung vorgeschlagen, die auch bei niedrigen Druecken eines Betaetigungsmediums (Druckluft) ein sicheres, nachtropfenfreies Verschliessen der Spruehkoepfe gewaehrleistet. Das Wesen der Erfindung besteht darin, dass ein allgemein bekannter, handelsueberlicher Spruehkopf 10 mit einer Betaetigungseinheit 2 mit Druckuebersetzung verbundenist, die mindestens eine Oeffnung 4 zur Zufuehrung eines Druckmediums aufweist. Die Betaetigungseinheit 2 besteht im wesentlichen aus einem, im Gehaeuse 11 angeordneten Betaetigungselement 3;7 und einerzwischen dem Betaetigungselement 3;7 und dem Verschlus
Patent DD-209643-A5 (DD)
Title: Dielektrische materialien
Inventor: HARRISON KENNETH J
IPC: C09K19/30
Filed: 1983-04-07
Abstract: EIN MATERIAL, DAS SICH FUER EINE GASTSUBSTANZ-WIRTSSUBSTANZ-FLUESSIGKRISTALLANORDNUNG EIGNET, WEIST EINE LOESUNG EINES FLUESSIGKRISTALLMATERIALS UND EINES PLEOCHROITISCHEN FARBSTOFFES AUF UND KENNZEICHNET SICH DADURCH, DASS DER FARBSTOFF WENIGSTENS EINE VON WASSERLOESLICHMACHENDEN UND IONISCHEN SUBSTITUENTEN FREIE ANTHRACHINONVERBINDUNG DER FORMEL I AUFWEIST, WORIN JEDE DER GRUPPEN R UND R HOCH 1 UNABHAENGIG EINE N-ALKYLGRUPPE MIT 4 BIS EINSCHLIESSLICH 7 KOHLENSTOFFATOMEN BEDEUTET UND WORIN JEDE DER GRUPPEN R HOCH 2 UND R HOCH 3 UNABHAENGIG AUS WASSERSTOFF UND ALKYLGRUPPEN MIT 1 BIS EINSCHLIESSLICH 4 KOHLENSTOFFATOMEN GEWAEHLT WIRD.
Patent DD-241573-A5 (DD)
Title: Antriebs- und lenkvorrichtung
Inventor: HUSS HEINRICH
IPC: B62K5/025
Filed: 1985-12-04
Abstract: Antriebs- und Lenkvorrichtung insbesondere fuer ein batteriebetriebenes Dreiradfahrzeug als eine Baueinheit. Durch die Erfindung wird die Antriebs- und Lenkvorrichtung so ausgebildet, dass sie wirtschaftlich herstellbar ist, wenig Platzaufwand erfordert und gewichtsreduziert ist, wobei sie technisch einfach konstruiert und wartungsfrei ist, alle Bauteile leicht zugaenglich sind und der Bedarf mit einem minimalen Aufwand reparierbar und/oder austauschbar sind. Erfindungsgemaess wird das dadurch geloest, dass am vorderen Abschnitt einer die Hinterraeder lagernden integrierten Metall/Kunststoff-Karosserie ein Traeger mit von ihm beabstandeter, jedoch mit ihm verbundener Lenkmechanik und mit einer die Traverse eines Rahmens aufnehmenden Huelse befestigt ist. Der Rahmen traegt dabei einen Elektromotor und Getriebe umfassenden Antrieb und lagert ein mit dem Motor gekuppeltes Antriebsrad. Figur
Patent DD-294955-A5 (DD)
Title: Verfahren zur herstellung von polyvinylchlorid-styren-pfropfpolymerisaten
Inventor: FRIESE KLAUS
IPC: C08F2/46
Filed: 1986-04-04
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Polyvinylchlorid-Styren-Pfropfpolymerisaten, die nach in bekannter Weise erfolgter Impraegnierung mit Treibmitteln, in einer gesonderten Verfahrensstufe zu schwerbrennbaren und selbstverloeschenden Schaumstoffen aufgeschaeumt werden. Als Pfropfpolymerisate werden solche Vinylchlorid-homo-oder-copolymeren und Styren oder Styren im Gemisch mit Comonomeren verwendet, die auf strahlenchemischen Wege gepfropft worden sind und einen Pfropfgrad von 0,05 bis 1,0 bei einem Chlorgehalt von mindestens 28 * aufweisen. Die verwendeten VC-Polymerisate weisen eine Porositaet von groeszer 0,25 cm3/g auf. Es werden Schaumstoffe erhalten, die in ihrer Brennbarkeit wesentlich vermindert sind, ohne dasz die mit anderen Zusaetzen verbundenen Nachteile auftreten.
Patent DD-245929-A5 (DD)
Title: Verfahren zum komprimieren von gasfoermigen foerdermedium sowie roots-kompressor zur durchfuehrung des verfahrens
Inventor: NISSEN HANS
IPC: F04C29/00
Filed: 1986-05-27
Abstract: Die Erfindung betrifft das Komprimieren von gasfoermigem Foerdermedium mit einem Roots-Kompressor, bei dem abwechselnd in die jeweils von dem jeweiligen Rootskolben und der zugeordneten Foerderraumwand gebildeten Foerderkammern nach dem Abschliessen gegenueber der Saugseite Foerdermedium aus der Druckseite gesteuert eingespeist wird. Ziel und Aufgabe der Erfindung ist es, ein neuartiges, effektives Verfahren zum Komprimieren von gasfoermigem Foerdermedium sowie einen kostenguenstigen Roots-Kompressor mit hohen Gebrauchswerteigenschaften zu schaffen, mit dem ein Abbau der druckseitigen Pulsation fuer jede Drehzahl des Kompressors in der gleichen Groessenordnung realisierbar ist, wobei der absolute Wert des Abbaues ueber den optimalen, bisher erreichbaren Werten liegen soll. Die Aufgabe wird erfindungsgemaess derart geloest, dass die Einspeisung derart gesteuert wird, dass in der druckseitigen Foerderkammer ein Unterdruckimpuls erzeugt wird, und dass die auf Grund des Unterdruckimpulses erzeugte Welle die auf Grund des Ueberdruckimpulses beim Eintauchen des Kolbenkopfes des einen Kolbens in den Taillenbereich des anderen Kolbens erzeugten Welle ausloescht. Fig. 1
Patent DD-270493-A5 (DD)
Inventor: LINSS GERHARD
IPC: B29C49/02
Filed: 1988-01-28
Abstract: In an apparatus comprised of a ring-shaped nozzle in a nozzle piece, which ring-shaped nozzle has a reciprocally movable nozzle cone piece, wherewith the cone piece and nozzle piece together define a ring-shaped nozzle opening, it is desired to modify the ring-shaped nozzle such that, in the manufacturing of hollow bodies, the amount of scrap can be reduced and the range of practicable applications of the apparatus can be extended. This is achieved in that an additional device or arrangement is provided for closing the nozzle opening. With the improved apparatus, one can achieve improvements in the hollow body being produced, the improvements being attributable to a special technique of closing the ring-shaped nozzle, which technique is enabled by the novel closure device.