baber/WOPTO huggingface dataset:
Patent CH-618527-A5 (CH)
Title: Method for pulling proofs in photogravure printing
Inventor: NAGANO KATSUSUKE
IPC: G03F5/20
Filed: 1978-03-17
Abstract: The object of this method is to allow the pulling of proofs permitting possible checking and correcting of photogravure prints without having to use, for pulling the proofs, the definitive photogravure printing press. A frame (2) is applied to the surface of the photosensitive layer of an unexposed offset plate (1); a continuous-tone photogravure printing film (3) is applied to the surface of the frame; the plate (1) is exposed to light, on the side containing the film (3), so as to reproduce the image of the film on the plate, the plate is developed so as to produce a printing forme and this forme is used to pull a proof intended to permit the checking and correcting of the photogravure print. <IMAGE>
Patent CH-584774-A5 (CH)
Title: Two-for-one yarn twisting brake - has a recess in braking surface to allow pneumatic yarn threading
IPC: D01H13/10
Filed: 1975-03-07
Abstract: The design of the braking system, for a yarn in a two-for-one twisting spindle, where ferro-magnetic braking platelets are tripped by multi-pole magnets, has a fixed braking surface with a yarn channel with a recess slanting downwards so that on pneumatic threading the yarn passes along the side of the braking surface. The design allows the yarn to be threaded through, without disturbing the braking system.
Patent CH-610727-A5 (CH)
Title: Insecticidal composition
Inventor: WEIGAND NORBERT DR
IPC: A01N25/00
Filed: 1976-03-11
Abstract: Insecticidal composition containing 5 to 80% by weight of an insecticide which is preferably edible, 30 to 90% by weight of a foodstuff and 0.1 to 2% by weight of a food grade attractant in the form of appetizers. The composition can be applied in the form of sprays or in the form of a coating agent.
Patent CH-579707-A5 (CH)
Title: Liquefied gas and air and steam turbine - has valves for admitting different working media into expansion chamber
IPC: F01K21/00
Filed: 1974-03-27
Abstract: Liquefied gas is injected in small quantities periodically directly into the pressure chamber and gaseous air or steam is injected into the pressure chamber during low pressure periods. The back pressure turbine has a rotor (1) with spiral pressure chamber (2) which joins a reaction nozzle (3). This pressure chamber has an injection valve (5) for gaseous medium near the hollow shaft valve (6). The housing has a ring with an opening for directing the flow of the medium. The valve for steam or gaseous media is a non-return valve which opens when pressure in the pressure chamber reaches a certain low value.
Patent CH-655276-A5 (CH)
Title: Method and device for coating cylinders made of screen material
Inventor: BELLOT RAMON
IPC: B41F13/38
Filed: 1981-07-31
Abstract: For coating the outer surface of the cylinder (1), the latter is mounted between two centring rings (2, 3), a squeegee element (6) arranged inside the cylinder (1) being moved with the aid of a cable winch (25, 26) along the cylinder (1). The squeegee element (6) has two plates (7, 8) arranged spaced apart, of which the lower plate (7) serving as squeegee, during the movement of the squeegee element (6), transfers a coating medium (16) located above said plate from the inside to the outside of the cylinder (1), where it combines to form a homogeneous coating of uniform thickness. In contrast to known coating methods, the uniform, bubble-free coating is also achieved even if there is out-of-roundness of the cylinder (1) and at the same speeds of movement. <IMAGE>
Patent CH-646306-A5 (CH)
Title: Pesticide which can be used at very high concentrations
Inventor: YOKOYAMA SHIGERU
IPC: A01N57/00
Filed: 1980-10-23
Abstract: The pesticide contains   (a) 50 to 98 % by weight of pesticidal organophosphorus compound as active ingredient, (b) 2 to 30 % by weight of non-ionic surfactant which is derived from (b1) vegetable or animal fats or oils or vegetable or animal waxes, (b2) fatty acids or higher alcohols which are hydrolysis products of the fats, oils or waxes described under (b1), or (b3) hydrogenated products of the fats, oils or waxes as described under (b1) or hydrogenated products of fatty acids or higher alcohols as described under (b2).   The surfactant (b) reduces the phytotoxicity of (a) without reducing its pesticidal activity.
Patent CH-605518-A5 (CH)
Title: Mono or di-alkylation of alpha beta carbonyl cpds. with imine(s)
Inventor: PFAU MICHEL
IPC: C07C49/76
Filed: 1971-07-07
Abstract: The mon- or di-alkylation of an alpha, beta-ethylenic carbonyl cpd. is effected reacting the carbonyl cpd. with 0.25 mol or 2 mols of an imine for mono- or di-alkylation respectively followed by hydrolysis and neutralisation of the intermediate product. The prods. are formed by addn. giving di- and tri-carbonyl cpds. respectively.The imine is pref. an imine of carbonyl cpd. specifically that derived from acetone and is apropylamino (CH3)2C=N-CH(CH3)2.The alpha, beta-ethylenic carbonyl cpd. is esp. methyl vinyl ketone.Process is applicable to ketones,  gives higher yields, and can be controlled to mono- or di-alkylation avoiding self condensation or polyalkylations.
Patent BE-1004128-A5 (BE)
Title: Plaque energetique a haut rendement devant venir se placer, de preference, par-dessus un bruleur a gaz ou analogues.
IPC: F23D14/14
Filed: 1990-11-14
Granted: 1992-09-29
Abstract: Plaque énergétique (1) à haut rendement, qui peut être placée par-dessus un bruleur à gaz (3) ou analogues, caractérisée en ce qu'elle est constituée par une surface supérieure de cuisson (4) munie d'une ouverture centrale (7) d'où partent une série de canaux ou de rainures (5), ces canaux ou ces rainures étant disposés radialement le long de la surface supérieure.
Patent CH-625428-A5 (CH)
Title: Fluid jet grinder
Inventor: CAZAL ALAIN
IPC: B02C19/06
Filed: 1978-10-30
Abstract: A vertical circuit (4) for circulating the particles to be ground has the approximate shape of a symmetrical horizontal figure eight and comprises an intermediate chamber (6) comprising the lower part of the circulation circuit approximately as far as its horizontal median plane (9) and, on this intermediate chamber (6), the upper part (14 to 16) of the circulation circuit (4). The intermediate chamber (6) is formed from two independent parts (6a and 6b), assembled along the plane of symmetry of the grinder and entrapping an interchangeable tubular lining, constituting the base of the intermediate branch of the circulation circuit (4). <IMAGE>
Patent CH-579087-A5 (CH)
Title: Perfume components - contg derivs of 2,3,3a,4,5,6,7,8- octahydroazulene
IPC: C11B9/00
Filed: 1972-06-05
Abstract: Title cpds. I and their 1, 8 a -dihydro derivs. are prepd. by cyclising a 3-isopropenyl-1-methyl-1-cyclopentene of formula II in an org. solvent in the presence of a Lewis acid to a cpd. of formula III, or to a cpd. of formula IV and opt. a cpd. of formula IV is (a) esterified to a cpd. of formula V or (b) etherified to a cpd. of formula VI or (c) oxidised to a cpd. of formula VII, and opt. converting the formed ketone into a cpd. of formula VIII by reacting with a Grignard cpd. of formula R1-MgHal, and then hydrolysing and opt. etherifying or esterifying cpd. VIII, or hydrogenated ketone VII to a cpd. of formula Ix or X, or (d) is hydrogenated to a cpd. of formula XI or XII, and opt. esterifying or etherifying these cpds. (where R1 is alkenyl, or R11, or jointly with R4 is oxo; R11=R2 is H or alkyl; R3 is methyl or methylene; R4 is hydroxyl, alkoxy, alkenyloxy, alkoxyalkyl or acyloxy; R5 is H, or if R3 is methyl and R1=R11, is, together with R4, a 3 alpha, 6-epoxy group; R6 is acyl; R7 is alkyl, alkenyl or alkoxyalkyl; and Hal is chlorine or bromine).
Patent CH-611164-A5 (CH)
Title: Applicator for dispensing a small quantity of a polymerisable liquid onto tooth surfaces
Inventor: PERFECT ALAN JOHN
IPC: A61C5/62
Filed: 1976-10-07
Abstract: The applicator has a bore (7) which extends in the handgrip (2) of the applicator and contains a movable piston (8). The piston is moved towards the head (3) of the applicator by means of an actuating lever (4) being pressed down and is pushed against an elastic membrane (9) lining a chamber (6). In the applicator head (3) there is a further chamber (15), into which a disposable tube (5) opens. Exerting the pressure on the membrane (9) with the head of the piston (8) leads to a significantly improved and more uniform dosing. <IMAGE>
Patent CH-637047-A5 (CH)
Inventor: LAUENER WILHELM F
IPC: B21B3/00
Filed: 1978-12-29
Abstract: A method for controlling a casting and rolling mill by measuring the speed of a cast strip between the casting machine and the first following rolling mill and regulating the speed of the casting machine directly proportional to the measured speed of the cast strip. It is thus possible to avoid auxiliary equipment required in prior art systems such as pinch rolls and a continuous furnace between the casting machine and the first following rolling mill. Furthermore no loop on the cast strip is required. As a result, great reductions in capital expenditures, the energy required to operate the line and the necessary space can be obtained.
Patent CH-560334-A5 (CH)
Title: Paper roller pressure compensation system - has divided pressure zones with throttle valves linked to a pressure source
IPC: B65H27/00
Filed: 1972-11-20
Abstract: The construction of a cylinder for processing paper, where the cylinder ends are supported by a static yoke, has an internal pressure zone, for the hydrostatic support of the roller mantle, with a dividing web to define separate pressure segments where two segments are linked by throttle valves to the pressure source. The system provides a stable support for the pressure compensation required while the roller is in operation.
Patent CH-564459-A5 (CH)
IPC: F17C13/02
Filed: 1972-12-01
Abstract: An apparatus is provided for holding fluid material distinguished by being balanced in such a way that when placed on a horizontal surface its position will change depending upon whether the fluid contents exceed or fall below a pre-selected minimum.
Patent FR-2062055-A5 (FR)
Title: Motorised dish-brush
IPC: A47L17/00
Filed: 1969-10-09
Granted: 1971-06-25
Abstract: Interchangeable brush, pref. of nylon, steel wire, pig bristles or fabric, is mounted, for cleaning pots and pans, at the end of a flexible connector to a small electric motor, fixed to the wall, and rotating the brush. Machine is simple to operate.
Patent FR-2056406-A5 (FR)
Title: Easy-freeing base wallpaper
IPC: D21H27/20
Filed: 1970-06-30
Granted: 1971-05-14
Abstract: Foundation wallpaper strip has a plastic layer on its outer face to reduce the adhesion of decorative papers applied to it. Specif. the layer may be a polyvinyl, polyacrylate or polypropionate based-coating. Pigments such as kaolins or calcium carbonates may be added to the mix. The layer may be broken at regular or irregular intervals. It may consist of a plastic sheet, pref. water-permeable. The whole foundation paper may be perforated.
Patent FR-2062300-A5 (FR)
Title: Registration material contg stabilised poly - chromic materials
IPC: G03C1/73
Filed: 1970-09-17
Granted: 1971-06-25
Abstract: Memorising material for the registration of signals by recolouring photochromic compounds (I) with hight energy rays, pref. X rays including a donor HX, added to stabilise the colour formed, in which (I) and/or the donor are bound to a layer forming substance (II) by chemical bonding (I) and/or the donor are substituted in such a way that they can be reacted with a polymer contg. a active group i.e. (II). The pref. donor is methacryloylised tribromoethanol; (II) contains pref. acid halides as the active groups. (I) may be copolymerised with (II) or forms an oligomer which is the polymerised or can be straight away polymerised, HX being added before or after (co)polymerisation.
Patent FR-2097727-A5 (FR)
Title: Phthalic acid a nhydride precipitator - with cylindrical housing and - cage of tubes
IPC: C07C51/573
Filed: 1971-03-11
Granted: 1972-03-03
Abstract: An appts. for precipitating phthalic acid anhydride from gases containing it comprises a cylindrical vessel with tubes contg. alternating heating and cooling fluid arranged as an annular bundle around a central chamber and suspended from an upper tube plate which preferably forms a removable lid to the vessel. One gas connection is mounted in the upper tube plate and connects to the central chamber inside the ring of tubes while the other gas connection, pref. the inlet leads to the space outside the ring of tubes. This inlet is preferably below the lower tube plate, which may be constructed with a reversal chamber fixed to it, so that all the inlet and outlet connections for the heating/cooling fluid are on the top tube plate. The arrangement leads to improved precipitation, reduced thermal stresses and reduced corrosion.
Patent FR-2162762-A5 (FR)
Title: Regenerating used pvc - with mixture of fresh pvc, gelling agent , plasticiser and stabiliser
IPC: C08J11/06
Filed: 1971-11-30
Granted: 1973-07-20
Abstract: Used PVC articles, esp. non-sorted food packages, are regenerated by (a) cutting the articles into small pieces, and (b) joining the pieces with a regenerating agent consisting of fresh PVC, a gelling agent, a plasticiser, and a stabiliser in such proportions that a gellable compsn. is produced from which shaped articles can produced. Process yields regenerated PVC with good mechanical properties. Specif., 100 pts. wt. PVC pieces are mixed with 20-30 pts. wt. regenerating agent. The regenerating agent may contain a filter and a blowing agent, and a suitable rubber or acrylic polymer.
Patent FR-2163909-A5 (FR)
Title: Military mine - eith a cover moulded of polycarbonate to facilitate both assembly and charge deployment
IPC: F42B23/16
Filed: 1971-12-06
Granted: 1973-07-27
Abstract: The charge etc. is retained by a cap which is a threaded fit on to a metal casing and captive by a rib on the inside of the casing. Pref. the cap is a single moulding of polycarbonate with ancillary openings and stoppers via which the detonator and the fuse delays can be loaded. Pref. the lid edge is grooved to locate an annular seal between itself and the casing. The moulded cap can be fitted without risk of disturbing the charge, can withstand interim external knocks, but is readily broken away by the initial detonation to release the individual charges from the container.
Patent FR-2232972-A5 (FR)
Title: Alpha numeric electronic keyboard for data entry - with simple reliable coding system
IPC: H03M11/18
Filed: 1973-06-07
Granted: 1975-01-03
Abstract: An array of push keys forming a keyboard for entry or transmission of data consists typically of 128 alpha numeric and control characters in one of the international codes. Each key has an associated circuit which generates two pulses and by organising keys into a suitable matrix array and routening a pulse to each row and group of this array, logic encoding identifies the key depressed. Subsequent translation by means of a read only memory allows any required code format to be generated.
Patent FR-2251205-A5 (FR)
Title: Device for forming pom poms etc. - includes cone having disc at one end with axial peripheral teeth and toothed square disc at other end
IPC: D04D7/04
Filed: 1973-10-19
Granted: 1975-06-06
Abstract: A device for producing rosettes, pom-poms etc. comprises a cone having attached to each larger end a disc whose periphery has indentations in which teeth are retained by a retaining ring surrounding the periphery of the disc. The smaller end of the cone terminates in a square flange having blind bores in which needles with rounded ends are located. Yarn is wrapped around a central needle and the teeth in a desired pattern and the yarn can then be passed through the core and a similar pattern formed on the needles of the square flange. The device is simple to use without risk of breaking the yarn. A wide variety of different patterns can be produced.
Patent FR-2251176-A5 (FR)
Title: Cam disc profile gringing - has work and master profile on vertical shaft pressed by sprung guide roller
IPC: B24B17/02
Filed: 1973-11-13
Granted: 1975-06-06
Abstract: The axis of the shaft on which the guide roller is mounted can be adjusted so it is always in the same position w.r.t. the periphery of the grinding wheel. The result is automatic compensation for the wear of the grinding wheel and cam profiles with high dimensional accuracy. The shaft carrying the blank and master profile is located on a sliding table and a diamond continuously and automatically trues the periphery of the wheel. The cam discs are for automatic program-control devices. A traverse on the moving table is used to hold the vertical shaft on which the guide roller is mounted and the master is pressed against roller by a spring. A diamond oscillates in a horizontal plane so that a convex surface is obtd. on the rim of the grinding wheel, having a radius the same as the radius of the guide roller.
Patent DD-144795-A5 (DD)
Title: Verfahren zur herstellung eines bleches oder bandes mit oberflaechiger katalysatorstruktur
Inventor: LOHRBERG KARL
IPC: C25B11/06
Filed: 1979-07-05
Abstract: Zur Herstellung von Blechen oder Bändern mit oberflächiger Katalysatorstruktur wird eine Mischung aus pulverförmiger". Stützskelett-Material, wie Eisen, Nickel oder Kobalt, und aus pulverförmiger Raney-Legierung, z.B. auf Basis von
Patent DD-157204-A5 (DD)
Title: Vorrichtung zum herstellen eines garnes
Inventor: FEHRER ERNST
IPC: D01H4/16
Filed: 1981-01-26
Abstract: Eine Vorrichtung zum Herstellen eines Garnes besteht aus zwei eng nebeneinanderliegenden, gleichsinnig rotierenden Saugtrommeln (3) und aus einem in den Zwickelbereich zwischen den Saugtrommeln (3) ragenden, im Bereich der Saugzonen muendenden Fuehrungskanal (12) zum Zufuehren vereinzelter Huellfasern fuer eine Faserlunte (5), die von einem Streckwerk (1) an der einen Trommelstirnseite geliefert und durch den Zwickelbereich zwischen den Saugtrommeln zu einem Abzug (2) an der anderen Trommelstirnseite gefuehrt wird. Um die Ummantelung der Faserlunte mit den Huellfasern durch eine Erhoehung der Eindrehkraefte zu verbessern,sind die Oberflaechen (11a, 11b) der Saugtrommeln (3) rauh ausgebildet und weisen eine einen Formschluss mit einzelnen Huellfasern verhindernde Feingestalt mit einer Rauhtiefe auf, die hoechstens der Haelfte des Garndurchmessers entspricht.
Patent DD-159327-A5 (DD)
Title: Substituierte phenoxy-aminopropanolderivate
Inventor: MACHIN PETER J
IPC: C07C43/178
Filed: 1981-06-01
Abstract: Die vorliegende Erfindung beschreibt Verbindungen der allgemeinen Formel I, worin R eine verzweigte, 3 bis 4 Kohlenstoffatome enthaltende Alkylgruppe, R hoch 1 Wasserstoff, Halogen oder niederes Alkyl und R hoch 2 und R hoch 3 je Wasserstoff, Halogen, niederes Alkyl, niederes Alkoxy oder niederes Alkylthio bedeuten, und pharmazeutisch annehmbare Saeureadditionssalze davon, Verfahren zu deren Herstellung und pharmazeutische Praeparate enthalten solche Verbindungen. Diese Verbindungen und Salze besitzen beta-adrenergische Blockereigenschaften und antihypertensive Eigenschaften.
Patent DD-202663-A5 (DD)
Title: Farbwerk fuer eine lithographische druckmaschine
Inventor: DAHLGEN HAROLD PH
IPC: B41F31/02
Filed: 1982-07-13
Abstract: Die Erfindung bezieht sich auf ein verbessertes Farbwerk der vorstehend genannten Art. Durch die Erfindung wird ein Farbwerk geschaffen, das eine kontinuierliche praezise Steuerung der Farbfilmdicke ermoeglicht und insbesondere die Bildung sogenannter Geisterbilder vermeidet. Die Erfindung fuehrt zu erheblichen Material- und Zeiteinsparungen. Das Wesen der Erfindung besteht in einem Farbwerk, das eine einzige Auftragswalze mit elastischer Oberflaeche umfasst, die in der Lage ist, unter relativem Druckeingriff mit einer lithographischen Druckplatte zusammenzuwirken, in Kombination mit einem verbesserten Farbdosierglied, das einen duennen, steuerbaren, gleichmaessigen Druckfarbfilm auf der Oberflaeche der Druckwalze bildet, dessen Farbfilmdicke unabhaengig von der Oberflaechenumfangsgeschwindigkeit der elastischen Walze ist.
Patent DD-202531-A5 (DD)
Title: Verfahren zur herstellung von phamazeutisch wirksamen (3-aminopropoxy)-bibenzylderivaten
Inventor: KIKUMOTO RYOJI
IPC: A61K31/445
Filed: 1982-08-18
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von (3-Aminopropoxy)-bibenzylderivaten, die nuetzliche pharmazeutische Wirkstoffe, insbesondere Inhibitoren der Blutplaettchenaggregation darstellen. Repraesentative Vertreter fuer erfindungsgemaess hergestellte Verbindungen sind beispielsweise: 2-&(3-Dimethylamino-2-hydroxy)-propoxyl!-bibenzyl, 2-&(3-Dimethylamino-2-carboxymethoxy)-propoxyl!-bibenzyl, 2-&&3-Dimethylamino-2-(2-carboxyethoxy)!-propoxyl!-bibenzyl und 2-&&3-Dimethylamino-2-(3-carboxypropoxyl)!-propoxyl!-bibenzyl.
Patent DD-212515-A5 (DD)
Title: 1,3-dioxan-5-ylalkensaeure-derivate
Inventor: BREWSTER ANDREW G
IPC: A61K31/35
Filed: 1983-05-12
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von 1,3-Dioxan-5-yl-alkensaeure-Derivaten fuer die Anwendung al2000zne80ittel.Ziel der Erfind.ist die Bereitstellung neuer Verbindungen, die einem oder mehreren Effekten von TXA tief 2 entgegenwirken. Erfindungsgemaess werden 4-Phenyl-1,3-dioxan-5-yl-alkensaeure-Derivate der allgemeinen Formel I hergestellt mit cis-relativer stereochemischer Anordnung an den Positionen 4 und 5 des Dioxanringes, wobei Ra und Rb verschiedenerweise fuer Wasserstoff, Alkyl, Halogenalkyl, Alkenyl sowie wahlweise substituiertes Aryl oder Arylalkyl stehen; Rc ist Hydroxy, Alkoxy oder Alkansulfonamido; n ist 1 oder 2; A ist Ethylen oder Vinylen; Y ist wahlweise durch Alkyl substituiertes (2...5 C) Polymethylen; bei dem Benzenring B handelt es sich um wahlweise substituiertes Phenyl oder - wenn Rc fuer Hydroxy steht.
Patent DD-282083-A5 (DD)
Title: Aktive tastatur
Inventor: SCHLENZIG JUERGEN
IPC: G01V5/00
Filed: 1985-02-20
Abstract: Das Verfahren zur Ermittlung der vertikalen Durchlaessigkeit von Lockergesteinen dient der quantitativen Erfassung einer vertikalen Sickergeschwindigkeit in ungesaettigten Lockergesteinskomplexen und charakterisiert somit deren Versickerungsfreundlichkeit. Es findet vor allem Anwendung bei der Bearbeitung von Problemen des Grundwasserwiederanstieges in vorher stark entwaesserten natuerlichen oder kuenstlich geschuetteten Lockergesteinen. Des weiteren lassen sich aus der vertikalen Sickergeschwindigkeit Aussagen zur Gefaehrdungssicherheit von Grundwasserreservoiren treffen. Es werden aus einem Grundwasseraufschlusz Proben entnommen, deren Konzentration an natuerlichen oder kuenstlichen radioaktiven Isotopen, speziell Tritium, laborativ bestimmt wird. Aus der Isotopenkonzentration im Niederschlag und der im Grundwasser gemessenen Konzentration kann unter Beachtung spezieller isotopenhydrogeologischer Randbedingungen die vertikale Durchlaessigkeit nichtwassergesaettigter Lockergesteinskomplexe bestimmt werden.
Patent DD-232482-A5 (DD)
Title: Blattduengemittel zur gezielten blattlangzeitapplikation
Inventor: EIBNER ROBERT
IPC: C05G3/00
Filed: 1985-05-06
Abstract: Die Erfindung betrifft Blattduengemittel zur gezielten Blattlangzeitapplikation enthaltend Haupt- und/oder Spurennaehrstoffe, dadurch gekennzeichnet, dass es Puffergemische enthaelt sowie Verfahren zur Verwendung dieser Blattduengemittel.
Patent DD-250901-A5 (DD)
Title: Schneekette mit einer inneren und einer aeusseren seitenkante
Inventor: GLINZER WILHELM
IPC: B60C27/06
Filed: 1986-12-08
Abstract: Die Schneekette ist an Fahrzeugen als Gleitschutzvorrichtung anwendbar. Die Schneekette ist auf L-foermigen Buegeln montiert, die auf einer Grundplatte drehbar gelagert sind. Durch Auseinanderfaechern der Buegel wird die Schneekette auf das auf dem Boden stehende Rad gebracht. Anschliessend wird die erfindungsgemaess vorgesehene Federeinrichtung gespannt, wodurch die Buegel gegeneinander in Richtung Pfeil vorgespannt werden. Wenn man mit dem Fahrzeug losfaehrt, wird die Kette durch die Federeinrichtung automatisch gespannt. Die Federeinrichtung besteht vorzugsweise aus einem verschiebbaren Balken, an dem zwei Zugfedern befestigt sind. Die anderen Enden der Zugfedern sind mittels Seilen, die ueber Umlenkrollen gefuehrt sind, mit den Buegeln verbunden. Fig. 1