baber/WOPTO huggingface dataset:
Patent CH-572711-A5 (CH)
Title: High protein food- and feedstuffs prodn - by culturing micro organisms in protein-contg medium and ultrafiltration
IPC: A23K10/12
Filed: 1973-04-16
Abstract: Food- and feedstuffs with high protein content are prepd by culturing micro-organisms pref. Saccharomyces fragilis in a liq. nutrient medium which contains carbohydrates and dissolved protein such as obtd from molasses or whey from the cheese-making process. After culturing, the medium is ultra-filtered which is pref. carried out in two stages with a water-wash in between to remove salts. The process does not require the use of separators, gives a product with a higher protein content than previously obtd, and the yeast used has a cleaning action on the membranes of the ultracentrifuge.
Patent CH-597873-A5 (CH)
Title: Operational endoscope cutting electrode
Inventor: STORZ KARL
IPC: A61B18/14
Filed: 1976-05-03
Abstract: Operational endoscope cutting electrode is formed as loop with bottom spacer block, attached by guide sleeve to upper supports
Patent CH-638371-A5 (CH)
Title: Device for harvesting and gathering fruit
Inventor: HALLER PAUL
IPC: A01D46/26
Filed: 1980-08-01
Abstract: The device comprises a tarpaulin (1) having a circular central opening (2) and a cut part forming two adjacent edges (6, 7) going from the central opening (2) to the periphery of the tarpaulin (1). The edges are fitted with fastening means and the tarpaulin is arranged to allow the upper ends of stakes (9) to be fastened to its periphery. <IMAGE>
Patent CH-603975-A5 (CH)
Title: Hinge fitting of synthetic material
Inventor: RENFER HEINZ
IPC: E05D1/02
Filed: 1976-05-19
Abstract: Hinge fitting of synthetic material comprises two rigid rectangular plates with parallel edges joined by flexible U=section strip
Patent CH-616951-A5 (CH)
Title: Process for the preparation of polyamidoamine compounds
Inventor: DANNER BERNARD DR
IPC: C08F8/32
Filed: 1977-05-23
Abstract: A polymer containing monomer units of acrylamide and/or methacrylamide, for example polyacrylamide, a secondary amine, for example dimethylamine, and, as stabiliser, a nitrogen-containing functional acid derivative which is capable of undergoing an equilibrium reaction with formaldehyde at the hydrogen-carrying nitrogen in the functional group, for example urea, are chemically linked to one another by means of formaldehyde, which reacts with hydrogen-carrying N atoms of its coreactants. For the reaction, which is carried out under basic conditions, the amounts of said starting materials are matched to one another in a particular way. The process enables polyamidoamine compounds to be obtained which have a good shelf life in aqueous medium and can be used as flocculants for aqueous colloidal solutions or suspensions. Particular mention should be made of the use as dewatering and filler retention agents in papermaking, for example also in the presence of aluminium sulphate.
Patent CH-571800-A5 (CH)
Title: HHHousing for electric devices typically wattmeters - made of non-conducting material screwed together so that screws cannot become live
IPC: G01R11/04
Filed: 1974-05-16
Abstract: A safe housing arrangement for electric apparati, particularly kilowatt hour meters, in which the two halves of the housing are screwed together using electrically safe screws, is presented. Basically the housing is simply a box made in two halves, which traditionally are screwed together from the outside, giving a certain risk that a crew can touch a live part. In the system described here, the screws (6) are mounted in a long shaped cylindrical hole (11) in the side of the front half housing (1). They screw into the back half housing with a suitable thread (8) and are operated from the front of the housing by means of a normal head (2). No risk of interference with the electric supply exists with this system.
Patent CH-644557-A5 (CH)
Title: Sledge with skis
Inventor: SCHNEEBELI RAYMOND
IPC: B62B13/12
Filed: 1981-11-13
Abstract: The sledge comprises two support devices (2) located one at the front and the other at the rear, and each formed by an upper cross member (6) carrying the seat (3), by a lower cross member (7) and by two pairs of connecting rods (8 and 9). Some of the latter are articulated onto one of the skis (1), the others onto the other ski, via one of their ends (at 10 and 11), and are, moreover, articulated, via their opposite end (at 12 and 13), onto the cross member (6). When traversing a slope obliquely, the seat (3) moves laterally in a combined rotational and translational movement, towards the bottom of the slope, thus unweighting the uphill ski (1) of the weight of the user. Simultaneously, the geometry of the sledge changes, the two skis (1) both turning about a longitudinal axis so as to remain in two parallel planes (16) which produces an "edge-gripping" effect. The conditions necessary for obliquely traversing the slope are thus fulfilled. <IMAGE>
Patent CH-616679-A5 (CH)
Title: Process for the preparation of N-(5-tetrazolyl)-1-oxo-1H-pyrimido[1,2-a]quinoline-2-carboxamides
Inventor: KADIN SAUL BERNARD
IPC: C07D491/147
Filed: 1976-07-12
Abstract: Substituted N-(5-tetrazolyl)-1-oxo-1H-pyrimido[1,2-a]quinoline-2-carboxamides of formula I are obtained by acylation of 5-aminotetrazole with an acid of formula II, in the presence of a dehydrating agent. The symbols in these two formulae are defined in Claim 1. The reaction can be carried out using dehydrating agents commonly used in the synthesis of peptides. The compounds of formula I and their pharmaceutically usable salts are useful as antiallergic agents in that they prevent anaphylaxis mediators from causing bronchoconstriction. <IMAGE>   <IMAGE>
Patent CH-577297-A5 (CH)
Title: Signal mechanism on children's potties indicating when used - releases signal by artificial resistance caused by child's secretions
IPC: A47K11/04
Filed: 1974-07-11
Abstract: The signal mechanism on the baby's potty comprises an electronic switch mechanism which is designed so that it sends an acoustic or optical signal to a signal transmitter e.g. loudspeaker when an artificial resistance is formed between the two poles in the potty on account of the child's secretions. The artificial resistance causes a voltage to arise between the base and the emitter of a first transistor (T1) to thereby switch on the transistor. The positive potential thus formed switches on a second transistor (T2). The base emitter voltage ceases on emptying the potty. The mother is thereby immediately aware when her child has used the potty, without having to keep a constant check.
Patent CH-636447-A5 (CH)
Title: Device for monitoring electrodes
Inventor: HALFTER GEORG DR
IPC: G01R31/50
Filed: 1977-08-26
Abstract: A description is given of a device which makes it possible to indicate interference factors which occur in measuring and/or control units as a result of electrode or cable defects and, if necessary, to stop the supply of the reactant. As a result, the reliability of operation during production can be substantially increased. Figure 1 shows the potential testing system of such a device. It comprises in particular an amplifier (1), a potentiometer (Pr), a stabilised test voltage (2), a switch (3) with pulse generator (4), a comparator circuit (5) with break contact (6), and a resistor (7). Figure 2 shows the resistance testing system of such a device. It comprises in particular an amplifier (1), a switch (3), a resistor (4), a capacitor (K), an adjustable resistor (W), amplifier (8), clock generator (9), two rectifiers (10) and (11), amplifier (12), relay circuits for "resistance too low" (13) and "resistance too high" (14), and the break contacts (15) and (16). <IMAGE>
Patent CH-573781-A5 (CH)
Title: Graphite faced continuous casting mould - with pyrolytic graphite deposit on graphite surface
IPC: B22C3/00
Filed: 1971-07-28
Abstract: Continuous casting mould consists of a water cooled housing with a graphite insert with a surface layer of pyrolytic graphite together with carbide forming elements. The carbide producing elements are specif. selected from (gps. III, IV and V. The layer is applied by the simultaneous deposition from vapour both of the pyrolytic graphite and the carbide forming elements. The surface layer greatly increases the service life of the mould.
Patent CH-579995-A5 (CH)
Title: Retaining rod and screw for loose leaf file - uses rigid plastic tube with flat headed brass screws
IPC: B42F13/14
Filed: 1974-11-01
Abstract: The tube (1) is made of impact resistant plastic with an enlarged bore (7) at the lower end into which a flat headed brass screw (2) is either pressed or made to cut its own thread. The upper end of the tube (1) is provided with an internal thread (6) to suit a similar flat-headed brass screw (3). The screws (2) and (3) are identical in order to reduce manufacturing costs. Forcing the screw (2) into the bore (7) ensures that it is firmly locked in position. The use of a plastic tube with brass screws reduces costs when compared with an all brass fitting but is stronger than an all plastic fitting.
Patent FR-2036488-A5 (FR)
Title: Expanding high-pressure gas for continuous - analysis
IPC: G01N1/00
Filed: 1969-03-14
Granted: 1970-12-24
Abstract: At the centre of the pressurised gas circulation conduit is a chamber which communicates via a 1st small-dia inlet orifice with the duct and by a 2(d small-dia. outlet orifice with the outside. In the chamber is a permeable material which fills the space between the orifices. Specif. the analysis is e.g. by mass spectrometer. Pref. the inlet orifice opens into an annular space at the top part of the permeable material, while the outlet opens at the centre of the bottom of the chamber.
Patent FR-2057196-A5 (FR)
Title: Moulds with interchangeable parts
IPC: B29C45/37
Filed: 1969-08-05
Granted: 1971-05-21
Abstract: A mould impression which is limited at least in part by a removable element is used, esp for injection moulding. The movable element is attached to the interior of a matrix in which is placed a mould impression whose lateral surface fits that of the movable element. The matrix may be of pre-treated steel and the movable element of Al or bronze. Mould fabrication is cheaper.
Patent FR-2074113-A5 (FR)
Title: Moulding machines for fibre - reinforced - plastic masses
IPC: B29C43/00
Filed: 1970-12-21
Granted: 1971-10-01
Abstract: Moulding machines for compression moulding fibre-reinforced plastic masses have a female die and a punch which are closed by a closing movement composed of a translation movement and a rotational movement. The reinforcing fibres are oriented in a direction determined by the closing movement of the mould. Moulded articles are produced with a higher strength in a desired direction.
Patent FR-2096130-A5 (FR)
Title: Dry developable photographic product - using metal chelate - and heavy metal salt pref silver halide
IPC: G03C1/498
Filed: 1971-06-09
Granted: 1972-02-11
Abstract: An image is formed using a photosensitive heavy metal salt pref. silver halide, together with an image forming cpd. which is decomposed by the free metal from the salt. The image may be formed either by prolonged exposure, heating to 65-150 degrees C or exposure to red-infra-red 600-800 nm. The image forming cpd. is a metal chelate of an organic acid; the metal may be Ag, Cu, Ni, Sn or Au. Prefd. is a system contg. 1 mol. of silver ethylenediaminotetraacetate to 1-4 mols of silver bromide, both being present in an emulsion of pH less than 5. Dry developable system having greater sensitivity than other thermographic systems.
Patent FR-2109968-A5 (FR)
Title: Hot-melt coating materials - based on wax-polymer mixts contg metallic flake pigments
IPC: C09D123/04
Filed: 1971-10-07
Granted: 1972-05-26
Abstract: The materials consist of a mixture of petroleum wax and polymer, with addn. of a metallic flake pigment, in an amt. >=0.05%, pref. 5 to 50%. The pigment is pref. Al, Cu, Zn, Sn, Fe, Ag or Au and the particles are coated with (12-22C) fatty acid. The wax-polymer mixts. contain 5-99 (pref. 30-50)% wax and 1-70 (pref. 5-30)% polymers, such as polyethyelene, ethylene-vinyl acetate and ethylene-ethyl acrylate co-polymers. The compsns. used to mfd. objects, vegetable surfaces, etc. to provide improved thermal insulation properties, as a result of the reflective properties of the metallic pigment.
Patent FR-2194113-A5 (FR)
Title: Moulding pastes into self supporting sticks - using pressure to fill a porous mould more quickly than a fusion cycle
IPC: A61K8/11
Filed: 1972-07-25
Granted: 1974-02-22
Abstract: Materials with the consistency of a self supporting paste are shaped by filling an expanded shell profile mould using pressure and then removing most of the mould to leave a collar at the mouth of the mould as an integral support for the moulded stick of paste. The mould may be filled by an injection or extrusion process via an elongated nozzle which is progressively withdrawn from within the mould as filling proceeds. Alt. the mould may be gravity filled with a paste compsn. predispersed in micro capsules which are subsequently burst by compression to create a cohesive paste within the mould. The mould pref. is a fibrous plastic or paper based structure which is porous to air and is supported in a mould holder via which the cavity can be evacuated through the mould walls during filling. The collar may be a conventional plastic mount for a lipstick holder etc. For shaping and mounting paste sticks for cosmetic commercial or office aids, or for medications such as styptic or chiropody crayons.
Patent FR-2242877-A5 (FR)
Title: Sewing machine cutting blade setting - with sensors to monitor edges of workpiece fabric
IPC: D05B35/06
Filed: 1973-08-28
Granted: 1975-03-28
Abstract: Designed for working narrow fabrics as straps for lingerie, sensors are provided to give mechanical, contact and/or electrical binary impulses to a logic circuit for the operation of a differential drive to rotate the cutting blade on its vertical axis so that it follows the line of fabric flow. The purpose is to give a self-correction facility so that the operative does not need to devote time to watching fabric flow, thus increasing productivity.
Patent CH-695480-A5 (CH)
Title: Hockey stick has a straight shaft at the upper end and with a slightly bent lower section
Inventor: YU KUO-PIN
IPC: A63B59/12
Filed: 2005-10-28
Abstract: An improved design hockey stick has a straight section (21) extending 50 to 75 percent of the upper part of the shaft. A bent lower section (23) of the shaft connects the upper shaft to the head (30). The bent section connects smoothly to the straight shaft and has a maximum deflection of less than 10 mm from the extension of the straight axis of the shaft.
Patent DD-147612-A5 (DD)
Title: Mittel mit fungizider und nematizider wirkung
Inventor: NUESSLEIN LUDWIG
IPC: A01N43/82
Filed: 1979-12-06
Abstract: Die Erfindung betrifft fungizide und nematizide Mittel zur gleichzeitigen Bekaempfung von phytopathogenen Pilzen und Nematoden im Gartenbau und in der Landwirtschaft. Ziel ist die Bereitstellung von Mitteln mit verbesserter fungizider und nematizider Wirkung, breitem Wirkungsspektrum und guter Pflanzenvertraeglichkeit. Erfindungsgemaesz enthalten die neuen Mittel als Wirkstoff 1,3,4-Thiadiazol-2-carbonsaeure-Derivate, insbesondere mindestens eine Verbindung der allgemeinen Formel,  in der R C&ind1!-C&ind6!-Alkyl,  C&ind2!-C&ind6!-Alkenyl, C&ind2!-C&ind6!-Alkinyl oder C&ind3!-C&ind6!-Cycloalkyl, R&ind1! C&ind1!-C&ind6!-Alkoxycarbonyl, Aminocarbonyl, C&ind1!-C&ind8!-Alkylaminocarbonyl, C&ind3!-C&ind6!-Cycloalkylaminocarbonyl, Di-C&ind1!-C&ind8!-Alkylaminocarbonyl, Cyclohexylmethylaminocarbonyl, Alkoxyalkylaminocarbonyl, Morpholinocarbonyl, Pyrrolidinocarbonyl, Piperidinocarbonyl oder Cyan und n die Zahlen 0, 1 oder 2 darstellen in Mischung mit Traeger- und/oder Hilfsstoffen.
Patent DD-203756-A5 (DD)
Title: Doppelstrickschloss fuer strickmaschinen
Inventor: SCHIMKO REINHOLD
IPC: D04B15/82
Filed: 1982-09-24
Abstract: Ein Doppelstrickschlosz fuer Strickmaschinen mit in den Nadelkanaelen der Nadelbetten hinter den Stricknadeln angeordneten Arbeitsplatinen und hinter diesen angeordneten Jacquardplatinen weist untereinander angeordnete Nadelschloesser(AD), Platinschloesser(BD) und Jacquardplatinenschloesser(CD) mit festen und schaltbaren Schloszteilen auf. Um ein Umhaengen von Maschen unabhaengig von der Schlittenlaufrichtung und unabhaengig von der Umhaengerichtung nach vorne, nach hinten oder in beiden Richtungen zu gleicher Zeit zu ermoeglichen sind die Schloesser (AD, BD, CD) symmetrisch  zur Mittellinie (L) zwischen den beiden Teilen des Doppelstrickschlosses aufgebaut, und jedes Nadel- oder Platinenschlosz (AD;BD) enthaelt schaltbare Uebergabeschloszteile (1/1) sowie jedes Platinen- oder Nadelschlosz (BD; AD) schaltbare Uebernahmeschloszteile (9, 8) zum Maschenumhaengen. Vorzugsweise sind die schaltbaren Uebergabesvhloszteile (1/1) im Nadelschlosz (AD) in Nadellaengsrichtung verschiebbar ausgebildet und die schaltbaren Uebernahmeschloszteile (8, 9) im Platinenschlosz (BD) vorgesehen.
Patent DD-210196-A5 (DD)
Title: Herbizide mittel
Inventor: LANGELUEDDEKE PETER
IPC: A01N57/20
Filed: 1982-09-29
Abstract: Gegenstand der Erfindung sind herbizide Mittel, gekennzeichnet durch einen Gehalt an einer Verbindung der FormelI,worin R=H,NHtief4,NA,K oder einhalbCa,und X=OH oder -NH-CH(CH tief3) -CONH-CH (CHtief3)-COOH bedeuten, in Kombination mit einer Verbindung der FormelII, worin X=CI oder CHtief3 und Y=H, Alkali, gegebenenfalls substituiertes NH tief4 oder Alkyl bedeuten,u.der Verbindung der FormelIII o.d.Verbindung d.FormelIV.Diese zeigen synergistische Wirkung bei d.Verwendung zur Unkrauetbekaempfung insbesondere in baum-oder strauchartigen Kulturen.
Patent DD-209582-A5 (DD)
Title: Katalytisches system fuer die polymerisation konjugierter diolefine
Inventor: CARBONARO ANTONIO
IPC: B01J31/14
Filed: 1983-04-15
Abstract: DIE ERFINDUNG BETRIFFT EIN KATALYTISCHES SYSTEM FUER DIE POLYMERISATION KONJUGIERTER DIOLEFINE. ZIEL DER ERFINDUNG IST ES, POLYDIOLEFINE MIT UEBERWIEGEND 1,4-CIS-STRUKTUR HERZUSTELLEN, DIE NUR GERINGE RESTE KATALYSATOR ENTHALTEN. D. NEUE KATALYSATOR IST ERFINDUNGSGEMAESS HERGESTELLT AUS A) MINDESTENS EINER METALLVERBINDUNG DER GRUPPE III B DES PERIODENSYSTEMS B) MINDESTENS EINER ALUMINIUMVERBINDUNG DER FORMEL AIR TIEF 2 R', WORIN R EIN ALKYL. CYCLOALKYL ODER ALKYLARYL IST, UND R'R ODER H IST C) MINDESTENS EINER VERBINDUNG, DIE EIN ODER MEHRERE HYDROXYLE, WIE Z.B. WASSER, KARBOXYLISCHE ALKOHOLE O. KARBONSAEUREN SIND UND MOEGLICHERWEISE D) EINE ANORGANISCHE VERBINDUNG, DIE CI ODER BR IN IONISIERBARER FORM ENTHAELT, ODER MINDESTENS EIN ORGANISCHES HALOGENDERIVAT MIT DER FORMEL, WORIN R TIEF 1, R TIEF 2 UND R TIEF 3, DIE ENTWEDER VERSCHIEDEN VONEINANDER ODER VOELLIG ODER TEILWEISE GLEICH ZUEINANDER SEIN KOENNEN, H, O, CI- ODER BR-ATOME SIND, ODER ALKYL, ARYL, ALKYLARYL, CHLORO- ODER BROMOALKYL ODER CYCLOALKOXYRESTE SIND U. X CI ODER BR IST.
Patent DD-210014-A5 (DD)
Title: Verfahren zum betrieb einer gips-schwefelsaeureanlage
Inventor: GOSCH HANS-WERNER
IPC: C04B7/04
Filed: 1983-06-15
Abstract: Ziel und Aufgabe der Erfindung bestehen darin, das Gips-Schwefelsaeureverfahren dahingehend zu verbessern, dass eine spuerbare Senkung der Investitions - und der Energie- bzw. Betriebskosten erzielt werden kann. Bei diesem Verfahren wird auf eine Umwandlung des als Einsatzprodukt dienenden Gipses zum Anhydrit in einer gesonderten Anlage verzichtet. Statt dessen wird der Gips zunaechst lediglich einer Teilentwaesserung bis auf einen Oberflaechenwassergehalt von 10 bis 15 Gew.-% unterworfen. Sodann erfolgt eine zweistufige Trocknung und Kalzinierung des Gipses, wobei das SO tief 2-haltige Abgas der Ofenanlage als Waermetraeger verwendet wird. Dieses Abgas wird dabei gleichzeitig soweit entstaubt, dass es ohne weitere Gasbehandlung in den Gaswaescher der Schwefelsaeureanlage eingeleitet werden kann. Nach Passieren der zweiten Trockenstufe weist der getrocknete und kalzinierte Gips noch einen Gesamtwassergehalt von ca.6 Gew.-% auf und wird zusammen mit den Zuschlagstoffen ueber ein Foerderorgan direkt in den Waermetauscher der Ofenanlage eingeleitet, so dass die Mischung des Ofenmehls im Foerderorgan und/oder Waermetauscher erfolgt.
Patent DD-222311-A5 (DD)
Inventor: RIMBAULT CHRISTIAN G
IPC: C07D405/06
Filed: 1984-08-29
Abstract: The invention relates to pharmaceutical preparations containing compounds of formula Iin which X represents unsubstituted or substituted amino or a quaternary ammonium salt; halogen, free, etherified or esterified hydroxy; free, etherified, esterified or oxidized mercapto; free or functionally modified carboxyl, free or functionally modified sulfo; acyl; nitro; an unsubstituted or substituted hydrocarbon radical or an unsubstituted or substituted heterocyclic radical, Y represents oxygen, sulfur, sulfinyl or sulfonyl but must be oxygen, sulfinyl or sulfonyl, if X is 1H-imidazol-1-yl, and rings A and B are each unsubstituted or substituted; or pharmaceutically acceptable salts of such compounds that contain a salt-forming group, and to novel compounds of formula I. The compounds are useful e.g. for the treatment of diseases of the respiratory tract and of liver diseases. They are prepared by methods known per se.
Patent DD-292709-A5 (DD)
Title: Verfahren zum auswuchten von stapeln rotationssymmetrischer teile
Inventor: KOEPPEN FRITZ
IPC: G01M1/30
Filed: 1986-01-28
Abstract: Die Erfindung betrifft ein Verfahren zum Auswuchten von Stapeln rotationssymmetrischer Teile, insbesondere von Magnetplattenstapeln. Ziel der Erfindung ist ein zeit- und kostenguenstiges Verfahren, das ohne besondere Vorkehrungen in Reinraeumen hoher Reinraumklasse anwendbar ist. Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu finden, das von vornherein, ohne Bestimmung der Ausgangsunwucht, eine genuegend kleine Restunwucht garantiert. Erfindungsgemaesz werden alle Stapel-Teile gleicher Masse soweit in Richtung zur Drehachse verschoben, bis sie mit einer Stelle der Bohrungswandung ihrer zentrischen Bohrung an der Drehachse anliegen. Des weiteren werden erfindungsgemaesz die vorgenannten Anlagestellen in gleich groszen Abstaenden auf den Umfang der Drehachse verteilt. Abschlieszend werden die Teile in an sich bekannter Weise durch Spannelemente fest mit der gemeinsamen Drehachse verbunden. Fig. 2
Patent DD-282216-A5 (DD)
Title: Vorrichtung zur kontrolle der bogenuebergabe in bogenrotationsdruckmaschinen
Inventor: PETER GUNTER
IPC: B65H7/08
Filed: 1989-04-13
Abstract: Die Erfindung betrifft eine Vorrichtung zur Kontrolle der Bogenuebergabe in Bogenrotationsdruckmaschinen, insbesondere fuer Schoen- und Widerdruck, bei denen der Bogen nach dem Prinzip der Bogenhinterkantenwendung gewendet wird. Ziel der Erfindung ist es, eine Vorrichtung zur Kontrolle der Bogenuebergabe zu schaffen, die einfach im Aufbau und in der Bedienung ist und auch bei hohen Maschinengeschwindigkeiten eine absolute Funktionssicherheit gewaehrleistet. Aufgabe der Erfindung ist es, eine Vorrichtung zur Bogenkontrolle zu entwickeln, durch die fruehzeitig eine fehlerhafte Bogenuebergabe angezeigt wird und fuer die bei unterschiedlichen Papierqualitaeten kein spezieller Einstellaufwand erforderlich ist und die weitestgehend gegen mechanische Beschaedigung geschuetzt ist und eine unkomplizierte Wartung moeglich ist. Erfindungsgemaesz wird dies dadurch erreicht, dasz in einer Bogenwendetrommel jedem Greifersystem ein durch einen Blendenschalter unterbrechbares, schlaufenartig verlegtes Lichtleitkabel zugeordnet ist, dessen beide Enden parallel zur Achse der Bogenwendetrommel aus einem Lagerzapfen herausgefuehrt werden und mit einer am Maschinengestell befestigten Sende- und Empfangseinrichtung zusammenwirkt. Fig. 2{Bogenuebergabe; Kontrolle; Bogenwenden}