baber/WOPTO huggingface dataset:
Patent DE-1800354-A1 (DE)
Title: Text transparencies
IPC: G03F1/54
Filed: 1968-10-01
Abstract: Positive transparencies of text or captions with variable densities below 2 (pref. 1.6 to 1.8, esp. 1.7) are obtained by printing original onto litho-line film and developing with hard-working developer, dissolving negative silver with reversal solution and removing dissolved silver with water, overall exposing film and developing in very soft-working developer such as fine-grain developer for miniature films. The process costs are slightly higher than those of diazo-type processes, but appreciable manual labour is saved. The transparencies are absolutely clear and sharp, and do not show edges corresponding to different parts of the text.
Patent DE-1801913-A1 (DE)
Inventor: VOESTER BRIGITTE SITTMANN GEB
IPC: E06B3/964
Filed: 1968-10-09
Abstract: The screw element and/or the thread, toothing etc. for securing it, slope towards the wall of the frame profile. By tightening the element, a tensioning component force is produced, acting onto the fitting part, which is inserted through the opne side of the frame profile, thereby preventing it from falling out. A second component force is also produced, extending at right angles to the first. The screw element supports itself on the corner of the frame profile, via a pointed tip. The fitting part engages under a projection of the frame profile, against falling out.
Patent DE-1803473-A1 (DE)
Title: Continuous metal casting installation
Inventor: RUMMEL DR-ING HABIL THEODOR
IPC: B22D11/115
Filed: 1968-10-17
Abstract: For rapid cooling and mixing of liquid or for de-gassing and homogenizing, forces acting contrary in elementary cross-sections one electrodynamically produced. Rotating current travelling fields influence the edge regions of the mould contents in direction of material movement so that forward-running flows of liquid metal in the cross-section edge regions flatten out in the neighbourhood of the solidification profile. Preferably, phase currents are produced by coils concentric to casting line so that their effect in casting direction is opposed to the required direction of force within the edge layers.
Patent DE-1817947-A1 (DE)
Title: Rapidly ventilating and cooling treated yarn - using ventilated drawing-off tube
Inventor: BUDDECKE HEINRICH
IPC: D06B17/00
Filed: 1968-12-06
Abstract: Device for continuous treatment of yarns with gaseous or liq. agents, e.g. drying, dyeing, bleaching, etc., has a drawing-ff device in the form of a tube which is ventilated and which leads past the treatment appts. back to a winding frame arranged on the winding machine. Yarn is rapidly ventilated and cooled.
Patent DE-1916844-A1 (DE)
Title: Dihydro-phosphatriazine-thiones plant pro- - tection agents or precursors
Inventor: ALFRED SCHMIDPETER DIPL-CHEM D
IPC: C07F9/6584
Filed: 1969-04-02
Abstract: Dihydro-phosphatriazine-thiones plant protection agents or precursors New cpds. are of formula: (where X, Y = C-NR4R5 or PR2R3; R4, R5 = H, opt. subst. alkyl or aryl, or a heterocyclic ring; R2, R3 = opt. subst. alkyl or aryl group or NR4R5; R' = aliphatic or opt. subst. aryl or aralkyl group. These are prepared pref. from equimolar proportions of HN=X-N = Y - NH2 and.
Patent DE-1941003-A1 (DE)
Title: Food cutting and pulping press
Inventor: GUSTAVE GATINEAU JAQUES ANDRE
IPC: B30B9/04
Filed: 1969-08-12
Abstract: Device comprises a hollow body surrounding a cylindrical or prismatic space provided with the means for feeding in foodstuffs, and in which a piston is driven to and fro, as a result of which the foodstuffs are alternately admitted and forced against dividing devices and outlet means which are arranged in longitudinal direction at one of the outlet ends of these spaces. In the case of potatoes being processed these fill approx. a quarter of the volume of the space, whereby they can come from below upwards along the concave surface when the piston withdraws, as a result of which the potatoes, in their upward movement, can, to a certain extent, scrape off the mash deposited on the concave wall during a prior cycle.
Patent DE-1950729-A1 (DE)
Title: Enzymatic hydrolysis of cellulosic materials
Inventor: HELMUT SCHAUER DIPL-ING
IPC: C12N1/22
Filed: 1969-10-08
Abstract: Cellulosic materials, pref. plant portions of mono- and di-cotyledons, are converted to microbiologically utilisable carbohydrate decomposition products either by acid decomposition followed by enzyme treatment or by a combined acid and/or alkaline and/or heat and/or pressure decomposition process to increase severity of enzyme attack on the native cellulose, followed by enzyme hydrolysis, pref. using Cx-cellulase, C1-cellulase and/or cellobiase and/or beta-glucosidase and/or hemicellulase.
Patent DE-1956304-A1 (DE)
Title: Conversion of closed cell plastics foam to - open cell structure
Inventor: HARTMEYER HEINRICH
IPC: C08J9/36
Filed: 1969-11-08
Abstract: Closed or partly closed cell plastics foam is placed between two electrodes and a reflecting wall or between two pairs electrodes. A high tension electrical discharge is produced which causes a high energy and high speed shock wave, which ruptures the thin walls closing individual cells.
Patent DE-1960301-A1 (DE)
Inventor: STROHL GAUMER JUN LEE
IPC: F25J1/02
Filed: 1969-12-02
Abstract: 1291467 Natural gas liquefaction processes; refrigeration AIR PRODUCTS & CHEMICALS Inc 5 Nov 1969 [19 May 1969] 54146/69 Headings F4P and F4H  In a process for liquefying natural gas the feed stream is first cooled in heat exchange with a single component refrigerant and then by heat exchange with a multicomponent refrigerant. Feed gas, free of CO 2 , enters the system via line 10, is passed through heat exchanger 12 and then to a separator 14 from which condensed water is removed via line 16. The gaseous phase is fed by line 18 to either of two driers 20, cooled in heat exchanger 24, and fed into a benzene scrub column 28 wherein the heavier hydrocarbons are condensed and removed via line 30. The feed gas stream passes from the column via line 34 to exchanger 36, is partially condensed, and fed to a separator 38; the liquid phase is used to supply reflux for column 28 whilst the gas is liquefied and subcooled in tube circuits 48 and 54 of a two zone heat exchanger 50, and stored. Exchangers 12, 24 and 36 are cooled by a single component refrigerant, such as propane or propylene supplied by compressors 60 and 62. The refrigerant is expanded at valve 66 into exchanger 12, vaporized refrigerant is returned to compressor 62 and liquid passed via lines 70, 72 and expansion valve 72 to exchanger 24. Any vapour produced is recycled to the compressor whilst the liquid is used in exchanger 36. The multicomponent refrigerant, consisting of nitrogen, propane, ethane and methane, is compressed at 100 and 102, and passed through heat exchangers 86 and 88 which are cooled by refrigerant liquid from exchanger 12 supplied via lines 70 and 90. The partly liquefied refrigerant is passed to a separator 110 and the liquid phase supplied via lines 112, 114 expansion valve 116, line 118 and spray header 52 to the zone exchanger 50. The gaseous phase is liquefied in line 122, subcooled in line 124, expanded at valve 128 and sprayed into exchanger 50 from header 56. Phase separators may be provided in lines 118 and 130, the vapour being injected into the column 50 adjacent headers 52 and 56. Refrigerant make up lines 97 and 140 are provided.
Patent DE-2034776-A1 (DE)
Title: Tea processer - by chopping, fermenting and drying
IPC: A23F3/08
Filed: 1970-07-14
Abstract: Air permeable baskets open at the top carry the green leaf through the dryer and fermenter units. Air is moved through the leaf content in the baskets at right-angles to the layers. using blower exits fitted on top and bottom sides of the belt. Air is regulated in a conserver by a cooler and blower, by humidity and temps. control in the dryer and by water spray in the fermenter. Weighers are used throughout the line for weight checking and quality control. The leaf is not touched by hand throughout, is gently handled by the transfer and conveying systems, thus ensuring standardised processing within the short harvest period and maintaining high quality.
Patent DE-2041372-A1 (DE)
Title: Suspension polymerisation of vinyl chloride - in presence of low-viscous cellulose ethers with very high-viscous cellulose derivs
Inventor: GULBINS ERICH DR
IPC: C08F14/06
Filed: 1970-08-20
Abstract: Vinyl chloride is (co)polymerised in aq. suspension, in presence of a free-radical initiator and a mixture of 0.001-0.02 pts. wt. (w.r.t. 100 pts. of monomer(s)) of a high molecular cellulose deriv. (e.g. oxypropylated cellulose ether) having a viscosity 50 cP with 0.0001-0.02 pts. wt. of an extremely high molecular cellulose deriv. having viscosity >1000 cP, as protective colloids,. Resulting polymer has fine granules with good plasticiser absorption and apparent density. There is no need to increase concn. of suspension stabilisers during reaction which may lead to the impairment of electrical props. of the polymer. Protective colloid mixture has good stability.
Patent DE-2118771-A1 (DE)
Title: Light curable polymers - obtd by curtius rearrangement of monomer contg carbonylazide gp in presence of polymer
IPC: C08C19/22
Filed: 1971-04-17
Abstract: The polymers, with light crosslinkable gp. (1) bound to main chain by urethane bridge, are obtd. by Curtius rearrangement of monomers contg. (1) and carbonyl-azide gp. at 60-100 degrees C in the presence of pref. OH-contg. polymers with release of N2. The monomers are pref. azidosulphonyl- and azidocarbonyl substd. benzenes and the polymers cyclorubber or vinyl alcohol unit contg. polymers. The prods. are used as light-curable films on paper, metal, glass or plastics substrates.
Patent DE-2144916-A1 (DE)
Title: Extraction of heavy metal ions from activated charcoal - - by treatment with acid-contg combustion gases
Inventor: FISCHER FRIEDRICH DIPL CHEM
IPC: C01B31/08
Filed: 1971-09-08
Abstract: Heavy metal cpds. are extracted from activated charcoal by treatment with acids in gas or vapour from (HCl, SO2, SO3, H2SO4 vapour), esp. with combustion and other industrial waste-gases. After treatment the activated charcoal is H2O-washed.
Patent DE-2205744-A1 (DE)
Title: Guanidinylidene-subst cpds
Inventor: SAUTER ROBERT DIPL CHEM DR
IPC: C07D233/48
Filed: 1972-02-08
Abstract: Title cpds. of formula (I) (where R1 and R2 are H or 1-4C alkyl and one of R1 and R2 can also be OH; R3 and R4 are H or 1-4C alkyl; R5 is H, 1-6C alkyl, 2-3C hydroxyalkyl, phenyl opt. mono or di-subst. by 1-2C alkyl or alkoxy, F, Cl, Br or NO2 benzyl or phenethyl opt. mono- or disubst. by halogen or adamantyl; R6 is H or 1-4C alkyl; R7 is H, 1-6C alkyl, 2-3C hydroxyalkyl, benzyl or phenethyl opt. subst. by halogen or 1-2C alkyl or alkoxy, phenyl opt. subst. by Cl, COOH or sulphamoyl, or adamantyl and R8 is H or 1-4C alkyl, or NR7R8 is a 5- to 7-membered satd. heterocyclic ring opt. carrying an O- or S-atom or a further N atom which may be substd. by lower alkyl or phenyl; and n is 0 or 1) and their physiologically tolerable acid addn. salts, are prepd. by reacting cpds. of formula (II) with HNR7R8 (pref. in the form of acid addn. salt) are antimicrobials (esp. after topical application) virucides and hypoglycaemics. They inhibit glucose resorption, lower the rate of gluconeogenesis, and potentiate insulin in the glucose utilisation of muscular tissue.
Patent DE-2213961-A1 (DE)
Title: Polyurethane foam casing - bonding substrate laminas to backing plates, protecting them from atmospheric conditions
Inventor: DREKMEIER KARL GERD
IPC: H05K5/00
Filed: 1972-03-22
Abstract: A component part, which is electrically and/or mechanically coupled to a backing plate, is additionally fixed and covered by placing a domed mould over the coupled parts to enclose them and then injecting a hardening plastic into the mould which adheres to both parts and the mould then removed. Pref. the plastic is a polyurethane foam reaction mixture and the component part a substrate lamina carrying a laminated circuit; the mould can accept a number of substrate plates at one go.
Patent DE-2246453-A1 (DE)
Title: Press. brewing mash prodn. - by Czerny method accelerated and with increa-sed yield
Inventor: HINZ ALEXANDER MARIO
IPC: C12C7/06
Filed: 1972-09-21
Abstract: The raw material, feed water and additives are fed into a mashing vat where sugaring and cooking takes place. The wort is transferred using the V.P. in the vat to a separator whence the wort sped. from spent grain etc. is fed via a filter to the pressurized brewing vat proper. With a simplex system, each batch is ready for maturation in 2 hrs. 10 mins and by duplication of both types of vat this is reduced to 40 mins. Method gives high quality, reduced capital and operating costs, maximized utilization of grain and additives.
Patent DE-2262021-A1 (DE)
Title: Diffusion doping of silicon wafers - used in integrated circuits and planar transistors by applicn. of a film colloidal silica, and B,P, As or Sb dopant then heating
Inventor: KOBERSTEIN EDGAR DR
IPC: C30B31/02
Filed: 1972-12-19
Abstract: In a diffusion process for doping semiconductor Si (wafers), e.g. with B, P, As or Sb, the surface of the Si substrate is coated with a thin film of a soln. contg. the dopant besides colloidal SiO2, then it is heated continuously or (pref.) in stages to the diffusion temp. and the dopant is allowed to diffuse from the solid phase into the Si at this temp. No costly appts. is required and the dopant concn. can be adjusted accurately and reproducibly, even for low concns. Simultaneous doping with As, P and B under the same conditions is possible and contamination, e.g. is eliminated, since the Si is coated before heating.
Patent DE-2320444-A1 (DE)
Title: Oblique cutting band saw - workpiece does not have to be moved but swings on turntable
Inventor: KOPPELBERG HELMUT
IPC: B23D53/06
Filed: 1973-04-21
Abstract: A band saw for making oblique or bevelled cuts through metal or plastics, esp. in rod form, is mounted so that the support for the saw band can swing vertically down in the cutting plane continuously as it bites into the material, the rod being held clamped on a fixed table. To enable any desired oblique angle to be achieved, the pivoting axis about which the band saw and its support move is itself rigidly mounted on a horizontal turntable having a vertical axis mounted on the fixed frame; the clamping device for the workpiece is also mounted on this turntable, and the turntable can pref. be fixed by clamping levers when in the desired position.
Patent DE-2320536-A1 (DE)
Title: Heat-curable Mannich base condensn prods - useful as coatings, impregnants and adhesives
Inventor: KEMPTER FRITZ ERDMANN DIPL CHE
IPC: C08G14/06
Filed: 1973-04-21
Abstract: A heat-curable condensn. prod. is obtd. by reacting (a) a condensed phenol with (b) a secondary amine contg. 1 hydroxyalkyl gp. and (c) (a) formaldehyde (releasing cpd) under conditions normally used for making Mannich bases.
Patent DE-2323600-A1 (DE)
Title: Waste waters from dye- works - regenerated by flocculation, filtering mechanically and by gas-adsorption under pressure
Inventor: KUPFER DIETER
IPC: C02F1/52
Filed: 1973-05-10
Abstract: Waste waters from dye works are regenerated for re-use by (1) adding 15 l./m.3 of a 10% flocculating soln. consisting (calc. as dry materials) of 70% Al2(SO4)3. 18 H2O, 30% MgCl2.6H2O and 700 g. Na2S2O4, during a dwelling period of 30 min. while maintaining pH 7.5-8.5 by addn. of 35% NaOH or 30% H2SO4, with aeration through const. stirring; (2) mechanically filtering flocculated waste water; (3) filtering in a gas-adsorption filter under excess press. and (4) recycling. When processing waste waters having a high dye concn., the flocculated waste water is pref. after-treated, for a 30 min. period, before filtering, by adding an organic surfactant, esp. "Sedipur" (RTM), to accelerate the sedimentation of fine materials, while maintaining pH 7.5-8.5, with const. stirring. Purification can be further improved by leading the waste water, after filtering, through a cation exchanger and an anion exchanger.
Patent DE-2327419-A1 (DE)
Title: Cheese prodn aids - for ready moulded finished product portions
Inventor: LIAN PER
IPC: A01J25/12
Filed: 1973-05-29
Abstract: The vessel of the pressing machine in which the mass of loose cheese is compressed to the desired final size, is lined by a topless and bottomless sleeve of the material, esp. plastic foil, used for the temporary storage and handling pack and when the cheese is moulded to size, this acts as part of the package which is completed esp. by placing a perforated plate of the material on top of the piston before pressing and a second such plate on top of either the loose or partly compressed cheese, in the latter case in association with dry salting. The perforated plates top and bottom may be welded in place after pressing and before the cheese is fed to the ripening chamber. Instead of perforated plates, the top plate may have a single aperture closed by a thin square of foil welded on only 3 sides to act as relief valve for gas produced during ripening when the pressure in the ripening chamber is lowered.
Patent DE-2330868-A1 (DE)
Title: Endless tape cassette recorder - with tape drive mechanism automatically stopped via control cct. has light source and photocell
Inventor: STARP FRANZ
IPC: G11B15/18
Filed: 1973-06-16
Abstract: The control circuit for the tape drive employs a light source and a photocell, located on opposite sides of the cassette. The latter has apertures in its sidewalls for passage of the light from the source to the photocell. The magnetic tape has two slots in it, which when aligned allow the light to pass through, so that the photocell provides a signal for the control circuit. An endless tape is used which is permanently housed in the cassette.
Patent DE-2332012-A1 (DE)
Title: Brushless permanent magnet D.C. motor - is fitted with additional iron circuits for torque equalisation
Inventor: SCHMIEDER FRITZ
IPC: H02K29/08
Filed: 1973-06-23
Abstract: The motor is- typically of the disc type with a permanent magnet rotor and has a switched d.c. supply applied to the stator windings. In the period during which the coil current is being switched from one coil to the next the torque output falls. This can be overcome by adding soft iron pieces which act in conjunction with the leakage field of the rotor to produce a reluctance motor effect whose torque in part compensates for the reduction in main winding torque. The iron pieces typically span a rotor pole pitch or multiple thereof.
Patent DE-2332594-A1 (DE)
Title: Leak-proof electrode support for inductive flowmeter - has plastic tube corrugated for flexibility with electrode seatings
Inventor: APPEL EGGERT
IPC: G01F1/58
Filed: 1973-06-27
Abstract: The leakproof model of an inductive flowmeter has a non-magnetic flanged tube having an insulating coating over the flange carrying electrodes and magnetic field generating units, in which the insulating coating consists of a thick walled plastic tube with thin-walled end-pieces and with alternate and external annular grooves to give a bellows-like flexibility. Near the middle a transverse bore has flat seats for packing of plug shaped electrodes which pass into the interior from diametrically opposite points.
Patent DE-2340806-A1 (DE)
Title: Hanger Conveyor hanger-conveyor system for large flat items - allows different intervals and different orientation to line of travel
Inventor: KROLL MICHAEL
IPC: B65G47/61
Filed: 1973-08-11
Abstract: An elevated rail conveyor circuit with hangers conveyors intersects with another similar circuit. At the junction between the two, a machine is provided to transfer articles between the two conveyors. This equipment is intended for the handling of articles such as door or window frames which are very long in one direction. Space can be saved if the articles hang with their long dimension in the direction of motion on the first conveyor, e.g. for spraying and at right angles on the second conveyor for drying. The machine take up device is form closed with the suspension system which is itself divided into two zones the first portion of which is above the second.
Patent DE-2341921-A1 (DE)
Title: High temp. matl. resistant to alternating thermal stress - comprises hot-pressed mixt. of tungsten carbide and graphite
Inventor: BOEDER HORST DIPL-CHEM DR RER
IPC: C04B35/52
Filed: 1973-08-18
Abstract: The material contains (all wt. %) 50-70 tungsten carbide and 50-30 graphite. One pref. compsn. is 50-60 tungsten carbide and 48-40 graphite. Another pref. compsn. is 60-80 tungsten carbide and 40-20 carbon made into a compact by pressing and heated above the peritectic for consolidation by the sepn. of molten tungsten carbide. The compacts are resistant to stresses caused by thermal shock which normally restricts the application of tungsten carbide due to the formation of cracks. Tungsten carbide or graphite or carbon powder is mixed and pressed using 10-20 KN/cm2 at room temp. to form a compact which is then hot-pressed at 1800 degrees C. using a min. press. of 1 KN/cm2. Test bars 4 x 4 x 45 mm were water-quenched from 900 degrees C but showed no cracks nor loss of strength whereas bars made only of tungsten carbide fell to pieces.
Patent DE-2344107-A1 (DE)
Title: Player for foil recording esp. video discs in covers - has foil changer with clamp holding foil during playing
Inventor: WILISCH JUERGEN
IPC: G11B17/022
Filed: 1973-08-29
Abstract: The mechanism, for carrying foil-type recordings, particularly video discs, inside their protective covers to and from a playing position, is such that the player does not need to be stopped during the foil changing process. At the beginning of the playing sequence the drive is switched on and the foil support reaches its required rate of revolutions. The foil is then brought in its cover from a stack to the playing position, where a retaining finger is lowered and holds the foil on its support, the foil cover being removed. A bobby in a hollow cylinder in the player housing then takes over the function of the retaining finger and prevents the foil from flying off its support. Pref. the control mechanism for bobby and retaining finger is a rotating wheel with a control groove and a lever system.
Patent DE-2345916-A1 (DE)
Title: Textile dyeing and printing prepns. - comprise basic dye, surfactant and opt water and/or miscible solvent
Inventor: HAEHNKE MANFRED DIPL CHEM DR
IPC: C09B1/503
Filed: 1973-09-12
Abstract: The dye is either in the form of a dye base or contains a pri- sec- or tert. amino, guanidino or hydrazino gp. and the surfactant is non-ionic or weakly cationic. Stable, concd. prepns. can be obtd. with a very wide range of dyes. They are used, after dilution with aq. acids, for dyeing acrylics acid-modified polyesters and polyamides, mordanted cellulose, silk, acetate rayon, leather and paper.
Patent DE-2346862-A1 (DE)
Title: Pulsed power supply for plasma welding - where pulse length and slope of pulse flank are adjustable
Inventor: HILDEBRANDT PETER DR ING
IPC: B23K9/09
Filed: 1973-09-18
Abstract: Power supply unit for arc welding, esp. plasma welding uses a power rectifier connected to at least one controllable semiconductor linked to a pulse unit used to generate welding current pulses; the pulse unit contains both a long-pulse generator and a single-pulse generator together with a pulse-flank adjusting device. The long-pulse generator is pref. an astable multivibrator and the single-pulse generator a monostable multivibrator, while the pulse-flank adjusting device consists of a capacitor with a charging and a discharge circuit. A reversing switch is a pref. fitted between the two pulse generators and the pulse-flank adjusting unit. The unit provides welding current of 0.01-20.0 amps. Can be used for a wide variety of work, esp. the plasma welding of thin Cr-Ni steel sheet.