baber/WOPTO huggingface dataset:
Patent DE-2937304-A1 (DE)
Title: Liquid crystal display with permanently visible characters - uses double refracting foil to convert plane into elliptical polarisation
Inventor: REICHEL EKKE DR PHIL
IPC: G02F1/1333
Filed: 1979-09-14
Abstract: A liquid crystal display consists of a Schadt-Helfrich cell sandwiched between two polarisers (2,3) with their polarising planes aligned. In the unenergised state, the cell rotates the plane of polarisation through 90 deg. so that no liqht is transmitted. Display segments (4,5) are made visible by energising the cell to rotate the plane of polarisation in these areas. Characters (7,9) which are to be permanently displayed, irrespective of cell energisation, are imprinted on a carrier sheet (10) before the cell and one polariser (3) and grouped in areas (11,12) outside the display segments. Each such group of characters is backed by a piece of double refracting foil (6,8). The foil transforms a olane into an elliptical polarisation so that light is always transmitted through these areas.
Patent DE-2945449-A1 (DE)
Title: Dog kennel with base, four sides and roof - has angle iron corner rails screwed to sides and roof and there are support plates for base
Inventor: BRONNHUBER MARTIN
IPC: A01K1/03
Filed: 1979-11-10
Abstract: The dog kennel consists of a base, four side sections and a roof. The side sections (2 to 5), the base (1) and the roof (6) are held together by angle iron corner rails (7,8,9). At a spacing above the bottom end which is to be set on the base, the rails have inwards directed plates (10) with vertical pins (11). The base (1) sits on the plates and the pins (11) are accepted by holes (12) in the base (1). The corner rails (7,8,9) are screwed to the side sections and/or the roof (1).
Patent DE-2949226-A1 (DE)
Title: Large, winding projection screen - has crossed extending support struts with square section sliders
Inventor: WANNERT MICHAEL
IPC: G03B21/58
Filed: 1979-12-07
Abstract: The transportable projection screen is stored rolled around a roller in the centre of a long rectangular box (1) with wheels for easy transport. The top of the screen is secured under the lid (20) which is lifted upwards, in a horizontal setting, by two crossed support arms (3) driven by servo-drives (6) along square section guides in the box. The square section guides and slider ensure a tilt-free operation of the screen. Two spring-loaded arms (5) with rollers (19) grip the underside of the cover as it drops into place. The whole screen may be operated by a single person using a fitted crank drive.
Patent DE-2949486-A1 (DE)
Title: Moving strip material drier - has incoming fresh air preheated in heat exchanger by exhaust air
Inventor: MENSCHICK HUBERT ING GRAD
IPC: F26B13/10
Filed: 1979-12-08
Abstract: The drier is particularly for moving strip material e.g. paper or textile, the fresh air, or a mixture of fresh and exhaust air, being heated and blown onto the material via nozzles. In addition to the air heater (8), a heat exchanger (7) is mounted inside the drier, preheating the incoming fresh air by the exhaust air (5), before the latter is discharged. The air-ducts inside the drier are so arranged that fresh (1) and exhaust (5) air currents intersect or travel in opposite directions. The heat exchanger can be mounted above or below the strip material (11).
Patent DE-2949752-A1 (DE)
Inventor: HERKLOTZ HELMUT DIPL ING
IPC: B03C3/68
Filed: 1979-12-11
Abstract: A method for detecting breakdowns in an electrostatic filter in which single measured values of equal phase of successive half waves of the filter voltage and crest values of successive half waves of the primary current are compared with one another and in which the differences of the measured values at which a breakdown signal is delivered are made dependent on the existing filter voltage or the primary current.
Patent DE-2953092-A1 (DE)
Title: Automatic winder coil former carrier - has parallel radially adjustable rods centred by mandrels of reel and has winding spaces bounded by flanges
Inventor: VESER FRANZ
IPC: H02K15/04
Filed: 1979-04-14
Abstract: Faster exchange of coil formers in an automatic winder is achieved with a loading unit (1) which features two parallel rods (10). The latter are radially adjustable and align with the centring points of mandrels (5) of the reel (2). The second loading unit ensures preparation of a coil former (6) for placement on mandrels (5) and thus reduces the downtime of the equipment. The winding spaces (7) of the coil former are bounded by flanges (8) with the smallest end flange engaging the recess on the largest end flange.
Patent DE-3005846-A1 (DE)
Title: Inhibition of microbial growth in humus-rich fertiliser - during storage but not after application to soil using formaldehyde-releasing substances e.g. para-formaldehyde
Inventor: MARUTZKY RAINER DIPL CHEM DR R
IPC: C05F11/00
Filed: 1980-02-16
Abstract: New method for the temp. inhibition of microbial growth during the storage of humus-rich or humus-forming fertilisers comprises the addn. of formaldehyde-releasing substances, e.g. paraformaldehyde, hexamethylenetetramine, or urea/formaldehyde or thiourea/formaldehyde condensation prods. The antimicrobial agents are pref. added to the fertiliser in a concn. of 0.1-2.5 wt.%. When N-contg. formaldehyde condensates are used as the antimicrobial agents, then nitrogen content can contribute to the fertiliser effect. Used for inhibition of microbial growth during storage of humus- rich or humas-forming fertilisers without causing undesired inhibition of microbial growth after applicn. of these fertilisers to the soil. The antimicrobial agents used (which are substantially odourless, nontoxic, biodegradable and cheap and have long-lasting activity under storage conditions) lose their activity when diluted by incorporating into the soil and/or under the influence of atmospheric weathering.
Patent DE-3011473-A1 (DE)
Title: Shut=off valve for gas duct - has lock chamber with rows of swivel louvre grooves
Inventor: BORODIN ALEKSANDR ALEKSEC
IPC: C21B9/12
Filed: 1980-03-25
Abstract: The shutoff valve for closing a large cross-sectional area gas duct comprises a lock chamber defined by the gas duct walls and the two rows of swivel louvre grills. These are held to the housing of the shutoff which accommodates a mechanical actuator. The louvre grills are arranged in the gas duct at an angle to the vertical plane to be spaced more widely apart in the top of the gas duct than in the bottom portion. When the gas duct is closed the lock chamber is filled with bulk free-flowing material from the top hopper located in the gas duct upper portion. When the gas duct is opened, the lock chamber is emptied of the bulk material. This is free to pour by gravity into the bottom receiving hopper, both of the hoppers being interconnected through a conveyor for the bulk material to return to the top hopper.
Patent DE-3013270-A1 (DE)
Inventor: KOENIG KARL-HEINZ DIPL CHEM DR
IPC: C07C67/00
Filed: 1980-04-05
Abstract: A process for the preparation of 1-monochloroethylcarbamyl chloride by chlorinating ethyl isocyanate or ethylcarbamyl chloride. The 1-chloroethylcarbamyl chloride obtainable according to the invention is an important starting material for the preparation of 1-chloroethyl isocyanate and vinyl isocyanate and accordingly a valuable starting material for the preparation of pest control agents, dyes, drugs, textile waterproofing agents, detergents, plastics, bleaching agents and adhesives, since the said isocyanates contain, in addition to a reactive isocyanate group, an activated double bond or an activated  alpha -carbon atom.
Patent DE-3014489-A1 (DE)
Title: Panel wiring trolley with pivoted clamp frame - is for large switchgear or distribution panels and allows rapid position adjustment in orthogonal planes
Inventor: LEHR LOTHAR
IPC: H02B3/00
Filed: 1980-04-16
Abstract: The clamp frame for holding the panel is formed from a series of metal profiles and is rotatable through 360 degrees about a central axis relative to a pivot frame. The latter can pivot through a given angle relative to the wheeled support framework, both frames selectively clamped in a required angular position. The wheeled support framework includes a height adjustment for setting the pivot frame at the required working level. Pref. both frames are rectangular and have the same size, the clamp frame being fixed to the pivot frame via a central bearing pin allowing the 360 degree rotation. This has a screw head at one end and fits through a nut welded to the underneath of the pivot frame at the other end, onto which a second washer is screwed, to allow the frames to be held in a required angularly offset position. The trolley is used for wiring large scale panels for switchgear or distribution appts.
Patent DE-3018968-A1 (DE)
Title: Hazard warning marking for abandoned vehicle - has symbol on face denoting no assistance required
Inventor: STAUDENMAIER ERWIN
IPC: B60Q7/00
Filed: 1980-05-17
Abstract: The accident warning marking has a triangle fitted to the rear of the vehicle and with the centre marked to show that no assistance is required. This prevents traffic build-up through vehicles stopping to offer help unnecessarily. The marking can be a simple 'OK' or other marking, easily seen from a distance. The triangle is fitted to the vehicle with magnetic strips or with double sided adhesive tape. It can be stored folded up and used on any vehicle.
Patent DE-3024121-A1 (DE)
Title: Video recorder with improved audio reproduction - uses repeater signal for time error correction for audio signal, scanned from tape
Inventor: SASSNICK ENNO-DIETRICH
IPC: G11B27/32
Filed: 1980-06-27
Abstract: An image signal, a periodically repeated signal and an audio signal are recorded on a magnetic tape, the audio signal being recorded in the tape longitudinal direction. The periodically repeated signal (7) is used for time defect correction of the audio signal (11), picked up from the magnetic tape (1). If oblique track recording with a synchronising track (6) parallel to the tape edge is used, synchronous pulses (7) are seconded on the synchronous track for marking the oblique tracks and for the control of the magnetic head velocity. These pulses are in the form of the periodically repeated signals, picked up from the synchronising track. Line and/or image synchronising pulses, picked up from the longitudinal track may be used on the periodically repeated signal. A time defect equalising magnitude (hs) may be derived from siqnal comparison.
Patent DE-3024667-A1 (DE)
Title: Connector for IC engine sparking plug - has HF capacitor and discharge gap inside housing
Inventor: MALY RUDOLF DR ING
IPC: H01T13/05
Filed: 1980-06-30
Abstract: The connector permits firing of the sparking plug by a sudden high energy discharge without the need for modification to either the plug itself or the distributor system. The insulated plug housing (1) contains a h.f. capacitor (8) between the cable connector (3) and the snap-on clio (5) for the plug terminal. Between the conductor ends is a spark gap (19). One terminal of the capacitor (10) can be connected to a screen (2) on the body of the housing. The capacitor is preferably of the ceramic type. A suppression resistor (4) is normally included in the circuit. The connector has rubber seals (6,7) at each end to give a close fit on the HT cable and the sparking plug insulator. The components inserted in the housing are typically cast in insulating resin.
Patent DE-3027290-A1 (DE)
Title: Decompression meter for divers - has slidable graduated segment, indicating when decompression are necessary, actuated by diver in accordance with maximum depth reached
Inventor: ALINARI CARLO
IPC: B63C11/32
Filed: 1980-07-18
Abstract: The device is used by divers to indicate the period and depth of the necessary decompression halts, and has two chambers and a pressure transducer. One fixed graduated part (10) corresponds to conditions when the decompression halts are not necessary, and a mobile index (14) is associated with the transducer. The other graduated part (12), corresponds to conditions when decompression halts are necessary, and is not fixed however, but can slide along the first graduated part (10). This mobile part (12) is slid by the diver using a rotary disc (16) bearing guide numbers indicated by another index (GN) to define the position of this mobile part. The guide member is chosen by the diver in terms of at least the max. depth reached by the diver.
Patent DE-3031772-A1 (DE)
Title: Pressure cylinder for grinding machine - is articulated to four-link unit, with grinding head drive via telescopic cardan shaft
Inventor: TOLSTOPJATOV KONSTANTIN SERGEE
IPC: B24B7/16
Filed: 1980-08-22
Abstract: The machine for grinding down workpieces comprises a carriage (8) base, a grinding head (1) on the spindle (2) of which the grinding tool (3) is fitted, and an articulated four-link unit (7). A drive (4) rotates the grinding tool, and a pressure cylinder (5) presses the tool (3) against the workpiece (6). The pressure cylinder (5) is articulately connected via a link with one of those of the four link unit (7). The grinding head is connected to the drive (4) by a telescopic cardan shaft (14).
Patent DE-3040052-A1 (DE)
Title: Foil made of noble metal, esp. gold - where authentication certificate is bonded to foil by adhesive to prevent forgery
IPC: G07D7/00
Filed: 1980-10-23
Abstract: A metal foil with a specific wt. and purity is made, and is covered on one side with a certificate which makes forgery very difficult. The certificate is esp. an anti-forgery paper on which identification data are printed. The other side of the foil is pref. covered with a transparent protective film, made esp. of polymer. The foil and its paper coating pref. have a min. size corresp. with DIN-A4 for paper, i.e. 297 x 210 mm.Both the paper and the polymer film pref. project beyond the edges of the foil and are stuck together by an adhesive so the foil is completely encapsulated. A polymer film may also cover the paper to form a polymer capsule. Forgery is made extremely difficult, but the coated foil may easily be cut into smaller pieces of specific size and therefore of specific value in money.
Patent DE-3041718-A1 (DE)
Title: Separately ventilated mine area ventilation system - has partial air currents formed between separated axial fresh air jets
Inventor: GRAUMANN KLAUS DR ING
IPC: E21F1/04
Filed: 1980-11-05
Abstract: An axial current of air is generated towards the face pref. in conjunction with an overlapping suction system for contaminated air removal. This forms part of ventilation for separately aerated underground mining sections. The arrangement extends from the face to the point of axially emerging fresh air. Fresh air is fed to the outlet in a series of axial partial jets. Partial ventilating currents are formed between the jets. The latter may be spaced far enough for any counteracting effect to be effectively excluded.
Patent DE-3042755-A1 (DE)
Title: Step=by=step workpiece machining system - carries out measurement after each step and uses results to control next step
Inventor: NAGEL PETER
IPC: B24B33/06
Filed: 1980-11-13
Abstract: The machining takes place in stages in subsequent machining station, esp. as regards honing of bores. After each honing station a measurement is taken, the result being used for the control of the the operation of the next preset station in machining of the following workpiece. The measuring results of at least one machining pass are used for the control of the following honing station. Pref. at least one honing station is controlled by both a following and a previous measuring stations, i.e. by the differential values of these stations. At least one measuring station may provide a different forward and rearward effect. This station may carry out measuring at several points of the bore. The control system of the machining arrangement contains a comparator for signals of both measuring stations, which controls the honing station in response to the difference of both signals.
Patent DE-3046516-A1 (DE)
Title: One-step liq. poly:alkyl-polysulphide prepn. - by reacting organic poly:halogen cpd. with alkali hydrogen sulphide and oxidising poly:thiol with air
Inventor: DOJKA MARIAN DIPL ING
IPC: C07C/
Filed: 1980-12-10
Abstract: Liq. polyalkyl-sulphides are prepd. by reacting organic polyhalogen cpds., and alkali hydrogen sulphides, to form polythiols, and oxidising the polythiols with air-O2. Novelty consists in carrying out halogen atom- to -SH exchange reaction and polythiol oxidn. in one reactor equipped with an air-supply device. Pelythiol oxidn. takes place at 350-380 deg. K, pref. in the presence of 0.1%, w.r.t. alkali hydrogen sulphide solids wt., of ferric cpds., Cr cpds. or other heavy metal cpd. catalysts. If polythiol degree of oxidn. is too low, after-oxidn. is effected with H2O2 at 310-350 deg. K. The polyhalogen cpds. can be polyhalogen-alkanes, -ethers and -formals boiling esp. above 400 deg. K.
Patent DE-3046650-A1 (DE)
Title: Slide projector with one way feed - has two magazines linked by projection plane and with index drive
Inventor: FENDRICH REINHARD
IPC: G03B23/04
Filed: 1980-12-11
Abstract: Each magazine is fixed w.r.t. the projection position and is linked to the projection feed by a fixed duct and with side slots. A spring loaded plate holds the stack of slides in each magazine, while an endless belt drive with tags moves the slides between the magazines and the projection position. Spring loaded wedges hold the top of the discard stack of slides and enable additional slides to be stacked on top. The slide index control is simple and direct while the loading of the magazine only requires a stack of slides to be inserted, with no slots to feed.
Patent DE-3103399-A1 (DE)
Title: Apparatus for producing and purifying gases and vapours
Inventor: MOSKAU GERHARD ING GRAD
IPC: B01D53/34
Filed: 1981-02-02
Abstract: A pressure-proof furnace for burning refuse and aqueous sewage sludges is fitted with a gas-scrubbing installation which is situated in its interior and through which the gases and vapours produced by oxidation under increased pressure are forced. As a consequence of the water content of the waste to be burnt, steam is immediately produced. Heat for hot-water generators, superheating steam, preheating air and superheating flue gas upstream of gas turbines can additionally be coupled out via heat exchangers situated in the furnace.
Patent DE-3110418-A1 (DE)
Title: Circuit arrangement for protection of a current transformer
Inventor: STORM DITMAR DIPL ING
IPC: H02H7/04
Filed: 1981-03-18
Abstract: A circuit arrangement for protection of a current transformer, in the case of which high voltage spikes and severe heating occur in the event of failure of a load which is connected in the secondary circuit of the current transformer. A switching contact which is open in the operating mode is provided in a branch parallel to the load. A switching device which causes the switching contact to close in the event of failure of the load is connected in a second branch parallel to the load. A spare load, which corresponds to the load, can be connected in series with the switching contact. The circuit arrangement is preferably provided for use in an optical landing aid (visual approach-slope indicator - VASI). <IMAGE>
Patent DE-3113414-A1 (DE)
Title: Electrical hotplate
Inventor: FISCHER KARL
IPC: H05B3/70
Filed: 1981-04-03
Abstract: An electrical hotplate (11) has a hotplate body (12) with a closed cooking surface (13) consisting of sintered material on an iron base with additives of other metals. Tubular heating elements (16) are fitted by being sintered in. A metal grid (28) is also sintered into the hotplate body and forms reinforcement so that the hotplate body can be designed with relatively thin walls. <IMAGE>
Patent DE-3116206-A1 (DE)
Title: Holder for a dental instrument
Inventor: HAYASHI KAZUO
IPC: A61G15/16
Filed: 1981-04-23
Abstract: An improved holder for dental instruments carries an instrument in the region between the rear end of the handle part and the tailstock part. A front holding part prevents movement in the horizontal direction, whereas a rear holding part prevents a forward tilting movement. The front and rear holding parts interact with each other in order to prevent movement of the instrument in the axial direction. The front holding part has three separate support areas, one of which is on the left side wall and two of which are on the right side wall. The two support parts on the right wall are offset axially relative to one another, and the single support part on the left side wall lies axially between the two opposite support parts. Right and left support parts in the rear holding part support the tailstock part of the instrument. An edge which extends from the upper wall of the right rear support part tangentially to the top left facilitates orderly removal and insertion of the instrument. The holder can be attached to the backrest of a treatment chair on which a patient reclines, so that the dentist sitting in front of the backrest can comfortably remove and return the instrument carried by the holder with a pen-like grip. The holder may have a second reception area for accommodation of a second instrument in a similar manner. <IMAGE>
Patent DE-3116789-A1 (DE)
Title: Method of electrolytically depositing metal on a pattern
Inventor: TSVETKOV IGOR V
IPC: C25D5/18
Filed: 1981-04-28
Abstract: In the method, the pattern (2) and the main electrode (3) are placed in an electrolyte. An additional electrode (4) is mounted at a distance from the pattern (2) in the same electrolyte between the pattern (2) and the main electrode (3), the distance being such as to prevent their mutual contact during the metal deposition cycle. An electrical supply source (5) is connected to each electrode (3, 4) and to the pattern (2) in turn in the sequence                            tau 1 +  tau 2 +  tau 3 = T. During the time period  tau 1, the positive pole of the electrical supply source (5) is connected to the main electrode (3) and the negative pole to the pattern (2), and metal is deposited on the latter. During the time  tau 2, the positive pole of the electric supply source (5) is connected to the pattern (2) and the negative pole of the supply source (5) to the additional electrode (4), and metal is selectively dissolved at the pattern (2) while metal is deposited at the additional electrode (4). During the time  tau 3, the positive pole of the supply source (5) is connected to the additional electrode (4) and the negative pole of the supply source (5) to the main electrode (3). Under these circumstances, the metal deposited at the additional electrode (4) is dissolved completely and deposited at the main electrode (3). The additional electrode (4) is made of a material which can be passivated during the anodic polarisation. <IMAGE>
Patent DE-3116984-A1 (DE)
Title: Marginal-strip mower unit
IPC: A01D34/86
Filed: 1981-04-29
Abstract: A marginal-strip mower unit, which can easily be exchanged for other working implements on the front jib of a drive vehicle, has a cross-shaped supporting frame. Its longitudinal arm carries supporting and guiding rollers at the front end and is held in a plug connection at the free end of the front jib. A supporting arm for the mowing tool is arranged on a transverse arm of the supporting frame so as to be pivotable about two mutually perpendicular axes via a universal joint, and the transverse arm also carries hydraulic adjusting devices for the pivoting of the supporting arm about the axes of the universal joint. A hydraulic adjusting device on the front jib pivots the supporting frame for adaptation to undulations of the ground. Pneumatic pressure accumulators and sensing controls automatically guide the mowing tool along the undulations of the ground or past obstacles. The mowing tool rests on the ground by means of a plate-shaped rest. <IMAGE>