baber/WOPTO huggingface dataset:
Patent DE-2624351-A1 (DE)
Title: 2,2-Dimethyl 3-(2,2dihalovinyl) cyclopropane carboxylic acid deriv - prepd from lactone derived from 1,1,1-trialkoxy ethane or 1-hydroxy 4-methyl but-2-ene
Inventor: MATSUO TAKASHI
IPC: C07D307/33
Filed: 1976-05-31
Abstract: Lactones of formula (III) are reacted with a halogenating agent and then with an alcohol of formula R3OH, or the lactones (III) are reacted with the halogenating agent in the presence of the alcohol to yield cpds. of formula (II). The cpds. (II) are reacted with a base to yield 2,2-dimethyl-3-(2,2-dihalovinyl)cyclopropanecarboxylic acid derivs. (I) which are known insecticides. where X is the same or different halogen atom; one of R1 and R2 is Cl or Br and the other is -CH2COOR3 (R3 is lower alkyl), one of Y1 and Y2 is O and the other is -CH2-). The starting cpds. (III) are novel and may be prepd. from Me2C=CHCH2OH and MeC(OR3)3 via 3 steps. The halogenating agent involves SOCl2, PCl3, PBr3, HBr, HCl, SOBr2, etc. The alcohol involves MeOH, EtOH, PrOH, BuOH, etc. The base used in the 2nd step involves alkali metal alkoxide such as sodium alkoxide or t-BuOK. In the 1st steps, reaction is conducted in a solvent (e.g. petroleum ether, petroleum benzene, xylene, hexane, benzene, toluene, THF) at 0 degrees C to the b.pt. of the solvent used for 30 mins. to 20 hrs. In the 2nd step, the reaction is conducted in a solvent (e.g. alcohol, THF, Et2O, benzene, toluene) at a temp. around the b.pt. of the solvent used for 30 mins. to 10 hrs.
Patent DE-2626594-A1 (DE)
Title: Master for electrostatic duplication process - has image areas of higher resistivity than background areas on operative side of master
Inventor: ILBERT JOSEPH
IPC: B41M5/10
Filed: 1976-06-14
Abstract: Proposed is a master for use in an electrostatic duplicator in which the background has an electrical resistivity in the range of 104-1010 ohms per square measured on the operative side of the master and the image areas have an electrical resistivity of at least 1012 ohm centimetres.
Patent DE-2635198-A1 (DE)
Title: Fastener for locating electrical accessories in wall boxes - uses two springs giving barb action preventing withdrawal on either side
Inventor: MAURER THEODOR
IPC: H02G3/18
Filed: 1976-08-05
Abstract: The application is to the mounting of an electrical accessory, e.g. a switch or socket outlet, it is fastened without the aid of screws into a plaster depth box fixed to the wall. The box (10) is firmly fixed to the wall and has at least two sides (13) made of a synthetic material, which is part elastic part plastic, which are flat on their internal surfaces. The component to be mounted (17) is provided with U-shaped springs (18) which have one end fastened to the component case. The free end has two outward projections which have a sharp edge such that when the component is fully hole any force tending to move it out again cause the projections to dig into the box wall and prevent movement.
Patent DE-2636675-A1 (DE)
Title: Printing unit using electrosensitive paper - has two groups of electrodes in single or two parallel rows across direction of paper movement
Inventor: KOEDER MANFRED
IPC: H04N1/23
Filed: 1976-08-14
Abstract: Printing unit for electrosensitive esp metallised recording paper has two groups of electrodes arranged in a single row or in two parallel rows arranged at right angles to the direction of paper movement. A control unit is used to regulate alternately the electrode groups. The control input for isolating all the electrodes of one group and the input for the second group are controlled in common via an inverter. The analogue signal corresponding to the information to be recorded is fed over an input contact to the a-d converter. For 2n-electrode groups, n-outputs are required from the a-d converter.
Patent DE-2648125-A1 (DE)
Title: Road illuminated warning triangle - with spring steel frame to roll into ballasted housing complete with battery lamp
IPC: B60Q7/00
Filed: 1976-10-23
Abstract: The hazard warning triangle is made from steel strip which is flexible enough to be rolled up, and with the separate sides pinned together on pivot joints. The triangle is unpinned at one end and rolled as one strip into the base container (21). The container also holds a battery and a warning light, (25) so that the triangle is more easily seen at night. The container is ballasted so that the triangle is not blown over by wind or by passing cars. It can also be set on a car roof, even when it is being towed. A magnetic base aids the fitting to the car roof. In the stored position, with the strip rolled inside the container, the magnet enables it to be fastened under the boot lid for ready access.
Patent DE-2650717-A1 (DE)
Title: Continuous polymer soln. prepn. - by adding cold solvent to polymer melt stream and passing through static mixer under adiabatic conditions
Inventor: KEGGENHOFF BERTHOLD DR
IPC: C09D7/80
Filed: 1976-11-05
Abstract: Polymer solns. are prepd. continuously from (a) polymer melts free from volatile constituents and (b) solvents, by means of a static mixer. Process comprises continuously adding a solvent or solvent mixt., which is at 0-40 degrees C, to a hot polymer melt stream at 100-200 degrees C. Wt. ratio polymer melt:solvent is 1:4-4:1. The non-homogeneous mixt. obtd. is passed continuously, under adiabatic conditions, through a heat-insulated static mixer. The resulting homogeneous, hot polymer soln. at 50-100 degrees C is sepd. directly, or after cooling to room temp. (18-25 degrees C). The polymer solns. can be used as binders in coating compsns. for metal, wood, plastics or building materials. Continuous, rather than intermittent, process yields a more uniform prod. and allows more automation. Separate polymerisation and dissolution steps allow more choice in selectin the solvent. Polymer solns. obtd. are free from residual monomer.
Patent DE-2652107-A1 (DE)
Title: Stabilising ferrous residues - by mixing with cpd. contg. active calcium oxide
Inventor: PAVONET WILHELM ENGELHART
IPC: B01J2/28
Filed: 1976-11-16
Abstract: A process for stabilising and consolidating residues consisting primarily of metal cpds., esp. residues contg. jarosites, goethites, Fe oxides, hydroxides, and sulphates, is described. These residues, with a solids content >=55 wt.%, initially incoherent, are mixed with the stabiliser to form a mechanically stable solid prod. which is inert to the dissolving action of H2O. This allows the prod. to be stored in a heap exposed to the weather without risk of pollution. The heap of solids is only superficially penetrated by rain. The outer layer maintains its strength and the water evaporates quickly after the rain has stopped due to the large surface area of the particles. CO2 in the atmos. has a stabilising effect on the outer layer of solids since it converts active CaO to carbonate. The stable mass will not slide, flow or creep. The process can be used for ferriferous residues produced by pptn. of Fe from solns. of Fe sulphate and Zn sulphate in hydrometallurgical treatment as well as FeSO4 residues and other residues contg. Fe sulphates, oxides or hydroxides.
Patent DE-2659742-A1 (DE)
Title: Exhaust gas temperature determn. - uses static pressure in jet in gas flow path as measure of temp.
Inventor: MEYER FRANZ-JOSEF DIPL ING
IPC: G01K11/00
Filed: 1976-12-31
Abstract: A measuring device for the determination of the temperature of hot gases such as exhaust gases has an exhaust probe (27) comprising a Lavel jet (12) having a pressure measuring device (11) connected by way of a passage (20, 21) to the narrowest part of the cross-section and a mass transfer measuring device (13) in the passage (14, 15) to the exhaust outlet (16). A heat exchanger (17) with inlet and outlet tubes for coolant (18, 19) cools the gases prior to the mass transfer measurement. The mass transfer measuring device (22) may comprise a venturi or a shutter in the gas flow path. The temperature is determined from the pressure measurement by the formula T = (A.p/m)2. K/R where A is the cross-sectional area of the jet, p is the static pressure, m is the transfer mass, k is the isentropic constant and R is the gas constant.
Patent DE-2700485-A1 (DE)
Title: Large scale plant for roasting iron ore pellets - where travelling grate furnace feeds number of shaft furnaces
Inventor: PASCHEN PETER DR ING
IPC: C22B1/214
Filed: 1977-01-07
Abstract: Bulk material, esp. iron ore pellets are treated by (a) drying; (b) preheating; (c) prebaking; (d) final baking; and (e) cooling. At least steps (a,b) are undertaken on travelling grates in a belt furnace (x); and at least step (d) is carried out in a shaft furnace(y). Furnace (x) is pref. used for steps (a,B,C) and furnace (y) for steps (d,e), esp. where gas flows in counter current to the pellets and part of the gas used in step (a) is fed into step (e) for cooling. The pref. plant consists of a belt furnace contg. travelling grates for steps (a,b,c) and feeding the shaft furnace. Gas is fed in direction (e,d,c,b,a); and one furnace (x) pref. supplies three to six, e.g. five, shaft furnaces arranged in a circular row round the outlet of furnace (x). A flexible plant suitable for baking various types of iron ore pellets, with an extremely high output and reasonable investment- and operating-costs.
Patent DE-2708444-A1 (DE)
Title: Packaging machine vacuum wrapping chamber - has flexible walls which accelerate air evacuation process
Inventor: ASSFALG FELIX
IPC: B65B31/02
Filed: 1977-02-26
Abstract: A vacuum wrapping chamber is used to locate an unsealed cellophane bag which is full. The top wall of the vacuum chamber is flexible and is allowed to cover the bag inside the chamber by being in direct contact with it. When the air in the vacuum chamber is evacuated by pump, the heat sealing rail clamps the open end of the cellophane bag due to the force produced by the flexible chamber wall. Since most of the air is displaced by the flexible chamber wall before any suction is applied by the pump, this type of vacuum chamber is more efficient than rigid walled chambers.
Patent DE-2711193-A1 (DE)
Title: Current transformer system with inner core - has second core winding connected in parallel with winding of main core to reduce overcurrent factor
Inventor: KRAEFT HEINZ DR ING
IPC: H01F27/42
Filed: 1977-03-15
Abstract: Current transformer design with an inner core is proposed and is arranged so that short comings of conventional designs, such as high over-current factor can be avoided without resorting to the use of external parallel-connected chokes or an intermediate transformer in order to reduce the excessive over-current factor. Moreover the location of a parallel choke within the transformer housing is very 'space consuming' and thus impracticable for many applications. To overcome the problems, a second core is located inside the winding space of the transformer core, and is provided with a winding arrangement, such that both core windings are connected in parallel with one another.
Patent DE-2716101-A1 (DE)
Title: Sectional shaped brush for cleaning keels, pipes etc. - is made of twisted wire with looped ends joined together to reach round complicated structures
Inventor: VETTERMANN WOLFGANG DIPL ING
IPC: A46B15/00
Filed: 1977-04-12
Abstract: The brush is made of sections in the form of strings or chains joined together to as to fit round the objects being cleaned. The brush can be circular, elliptical or angular. The brush is made of twisted wires between which the brushes are held. The ends of the twisted wires are shaped into open loops, pref. eyes bent in opposite directions. The connections between the links of the brush are in the form of universal joints, spherical joints, cardan joints, hinges. The connection can be protected by means of a piece, pref. in the form of a suitably shaped brush. The brush is suitable for cleaning keels, pipes, ducts and objects of complicated structure.
Patent DE-2717619-A1 (DE)
Title: Heavy duty scrap metal shears - has angle between blades open towards pivot axis of moving blade
Inventor: DAHLEM PETER
IPC: B23D31/00
Filed: 1977-04-21
Abstract: The shear is particularly for cutting up waste material such as scrap metal or bulky refuse, having a stationary blade on the underside of the jaw and one or more rocking or rotary blades on an axis to the side of the jaw and above the stationary blade, and working at an angle to the latter. The angle is open towards the axis (14), and the jaw (2) is enclosed on the side nearest the axis by a second stationary blade (18), typically at right angles to the first one (17) and at the end of the latter nearest the axis. The angle can be between 10 and 65 degrees. There can be a number of arm (19) on the axis, each fitted with a shear blade (21) in a common plane.
Patent DE-2718900-A1 (DE)
Title: Surgical operation zone liq. applicator - is plug inserted into flask with screw thread at outlet, forming ejected liq. into spray
Inventor: BRAUN KARL
IPC: A61J1/00
Filed: 1977-04-28
Abstract: The flask containing a liquid which is to be applied over the region of a surgical operation is fitted with a stopper which acts as an ejector for a spray of the liquid. This stopper (11) has a hollow stem (26) which fits tightly into the neck of the flask after opening. At the top of the stem is an enlarged head containing a plug (12) with an opening at the top, forming the spray delivery hole. Inside the plug fits the screw threaded end (18) of a stud (14) to form the spray. Teh stem contains a blind hole (22) inside which the stud is suspended. At the bottom of this hole is an entry hole (24) extending sideways.
Patent DE-2727398-A1 (DE)
Title: Flotation system for materials esp. solids from liquids - using centrifugal force field with tangential entry and central take=off with adjustable weir device
Inventor: HOFFMANN HARALD DIPL ING DR
IPC: B03D1/14
Filed: 1977-06-18
Abstract: Flotation sepn. of materials is carried out in a centrifugal force field. This is obtd. in a cylindrical vessel mounted vertically having >=1 tangential entry for the material being treated. It has a central run off for the flotation residue and an outer overflow weir for the material floated off. The input is via a tangential inlet near the base of the vessel. The clarified liquor line is a vertical standpipe from the vessel base with an open top. The inlet to this pipe has a device to restrain separated solids from overflowing. This consists of a circular float which rests on the liquid surface and controls the opening of the runoff line by a counterbalanced restrictor. Air jets are provided to aerate the system. Provides a simple and economic system which uses the advantages of centrifugal sepn. to the full.
Patent DE-2731075-A1 (DE)
Title: Continuous operation oven for strip material processing - has infrared plastics sintering heater used also for heating drying air
Inventor: KNOBEL EUGEN
IPC: F26B3/28
Filed: 1977-07-09
Abstract: The continuous operation over is used for treatment of strip material. The latter can be textile fabrics, fibrous material, paper or plastics sheet. The textile fabrics can be woven fabrics, needle felt or carpets. Continuous strip material is printed or coated with plastics powder or paste. Powder is sintered by infra red radiant heaters or drying air can be blown into oven. The infra red heaters are used also as heaters for heating the air used for drying of paste. These infra red heaters can be swung out of the sintering position into positions for heating the drying air. The heater position is such that no excess gelating of paste will take place. The heaters will in this position not heat the strip directly.
Patent DE-2734153-A1 (DE)
Title: Hydrogen generation from magnesium powder kept under water - by adding aq. solns. of salts activating and sustaining reaction, useful with fuel cells
Inventor: BEYER HEINRICH
IPC: H01M8/065
Filed: 1977-07-28
Abstract: The moist Mg powder is treated first with an aq. soln. of (by wt.) 10-30% KHSO4 and 0.5-1.5% Co halide and then with an aq. soln. of (by wt.) 10-100% alkali(ne earth) halide and 1-6% molybdate, all amts. being referred to Mg. Pref. the cpds. and amts. used are 1.0-1.5% CoCl2, 20-50% NaCl and 3-5% Na molybdate. H2 is produced in high yields and at great rates. Addn. of KHSO4 and Co halide causes activation, whilst the salt soln. contg. molybdate sustains the reaction, with the the prodn. of the high temp. needed for favourable reaction.
Patent DE-2740476-A1 (DE)
Title: Air moisturising and cleaning system - uses air jet striking exposed water surface in ceramic or earthenware vessel
Inventor: CHAWLA GEB MITTELSTAEDT INGRID
IPC: F24F6/00
Filed: 1977-09-08
Abstract: The air moisturising and cleaning system uses an air jet striking an exposed water surface. It can be housed in a ceramic or earthenware vessel to absorb noise to a large degree, and additives such as scent, chemical binders for odours etc. can be mixed with the water. The design largely removes smoke and smells from the air, uses little electricity, and works silently.
Patent DE-2742217-A1 (DE)
Title: Hydraulic pump and motor acting on differential pressure - have single rotor working as motor and pump on opposite sides
Inventor: BERTRAMS JOSEF
IPC: F01C1/344
Filed: 1977-09-20
Abstract: A hydraulic machine acts as a motor over one half of its circumference and as a pump over the other half. A pressure tank with an air pocket provides a supply of liq. at pressure to the motor side of the machine. The pump side delivers liq. to a tank through a stop valve. There is a non-return valve is a connected between the high and low pressure sides of the system. A relief valve between the receiver tank and the pressure tank controls the pressure in the latter.
Patent DE-2750295-A1 (DE)
Title: Failsafe brake for vehicle transmission - incorporates one-way brake on layshaft to ensure vehicle only rolls in direction of selected gear
Inventor: SCHAEBEL HEINRICH
IPC: B60K17/26
Filed: 1977-11-10
Abstract: The vehicle is fitted with a ratchet type of one way brake on the gearbox layshaft, or on a power takeoff shaft, which only rotate in one direction. The system allows the vehicle to be stopped when travelling up hills without slipping the parking brake or the clutch. The system provides a failsafe handling characteristics for any vehicle, especially vehicles with automatic transmission. The brake always prevents the vehicle from rolling in the opposite direction to that selected on the gearbox, as the layshaft is always driven by the engine in the same sense.
Patent DE-2753477-A1 (DE)
Title: Textile and esp. dish-washing cleansing compsns, - contain crystalline, finely-divided, water-insoluble cation-exchanging potassium aluminosilicate zeolite
Inventor: SMOLKA HEINZ GERD DIPL CHEM DR
IPC: C11D3/12
Filed: 1977-12-01
Abstract: Washing and cleansing compsn. contains finely-divided water-insoluble, crystalline, cation-exchanging, bonded water-contg. alkali aluminosilicate, prepd. by hydrothermal synthesis. The alkali aluminosilicate contains (I) a K zeolite prepd. by crystallisation at 100 degrees C, having mol. ratio K2O : Al2O3 1-7, and consisting of: (a) zeolite F having compsn. 0.7-1.1 K2O 1 Al2O3. 1.8-2.3 SiO2; (b) zeolite H 0.7-1.1 K2O. 1 Al2O3. 1 8-2,3 SiO2; (c) zeolite W 0.7-1.1 K2O 1 Al2O3. 3.2-4.0 SiO2: (d) zeolite Z 0.1-1.1 K2O. 1 Al2O3. 3.8-2.3 SiO2; and/or (e) zeolite G 0.7-1.1 K2O. 1 Al2O3. 2.3-4.2 SiO2; or (II) a K zeolite, prepd. by crystallisation at 100 degrees C, having mol. ratio K2O : Al2O3 15-20, and consisting of : (f) zeolite J 0.7-1.1 K2O. 1 Al2O3. 1.7-2.1 SiO2; (g) zeolite M 0.7-1.1 K2O. 1 Al2O3. 1.9-2.3 SiO2; or their mixts. with one another or with (I). Particle size of (I) and (II) is 0.1-30 mu. In mixts. of (I) and (II), wt. ratio (I) : (II) is 20 : 1 to 1 : 1. Ca bonding capacity of the aluminosilicates is 50-170 mg CaO/g anhydrous aluminosilicate, at 20-90 degrees C. Proportion of (I) and/or (II), w.r.t. compsn. is 5-95 (10-60) wt. %. Uses include : cleaning instruments, conduits, vessels of wood, plastics, metal, ceramic or glass; furniture, walls, floors, and esp. washing textiles and dishes. The higher cost of K aluminosilicates, compared with Na zeolites A or X, is more than compensated by their improved washing or cleansing power. Good results are also obtd. in the presence of increased electrolyte quantities. The compsns. can be used for washing with sea-water.
Patent DE-2754924-A1 (DE)
Title: Continuous starch hydrolysates prepn. using acid starch suspension - passing from heating zone via orifice to reactor zone under pressure
Inventor: HUGHES JOHN FRANCIS
IPC: C13K1/06
Filed: 1977-12-09
Abstract: Prepn. of a starch hydrolysate comprises continuously passing an acid aq. starch suspension in a tubular heating zone at a pressure substantially above that of the saturated water vapour to heat it to >=100 degrees C and at least partially gelatinise to form a hot starchy liq. The liq. leaving the heating zone is passed out higher pressure into a constricted zone, then into a tubular reaction zone at a high pressure appreciably lower than the first high pressure zone. The liq. passes from the constricted zone to the tubular reaction zone in the form of a fine spray or mixt. with a sudden release of energy. The liq. forms in the tubular reactor a homogeneous starch hydrolysate. The process gives a uniform good tasting prod. with dextrose equivalents from 70-95 without requiring the use of enzymes.
Patent DE-2755577-A1 (DE)
Title: Isolation of spasmolytic, antibacterial and antimycotic alkaloid(s) - from e.g. Cheledonius root by moistening with ammonia soln., extracting with chloroform and working up extract
Inventor: FREYTAG WOLFRAM DIPL CHEM
IPC: C07D491/04
Filed: 1977-12-09
Abstract: In the isolation of the benzophenanthridine alkaloids chelidonine (I), chelerythrin (II) and sanguinarin (III) from plant material (e.g. Cheledonius root) contg. them, the dried and powdered plant material is moistened with ammonia soln. and extracted with CHCl3. The extract is worked up to give the alkaloids. (I) has spasmolytic activity. (II) and (III) have antibacterial activity, and (III) also has antibiotic and antimycotic activity. The procedures give the pure alkaloids (I), (II) and (III) in the quantities required for pharmaceutical use.
Patent DE-2808526-A1 (DE)
Title: Central heating heat pump - has humidifier spraying water on evaporator or condenser, with water supply controlled by hygrometer
Inventor: SCHWANEWEDE FRITZ
IPC: F24F3/14
Filed: 1978-02-28
Abstract: The heat pump for heating water, has a compressor (14) and an evaporator (13) which extract heat from the air (15), in series with a condenser (16) with a coil (17) in series with a pump (21) and a unit (19) to be heated. Near the evaporator (13) is an air humidifier (22) which injects water (25) into the air (15) for the evaporator. At one side of this zone is a hygrometer (26) which controls an electromagnetic valve (24) in the water supply line (23) for the humidifier. When the humidity of the air supply is low, the humidifier sprays water directly over the upper surface of the evaporator (13) or the condenser (16).
Patent DE-2809563-A1 (DE)
Title: Control circuit for two thyristor pulse converters - has input of individual AND=gate connected to clock pulse counter control output and output to power thyristor
Inventor: KALINITSCHENKO ANATOLIJ JAKOVL
IPC: H02P7/29
Filed: 1978-03-06
Abstract: The control circuit, for thyristor pulse coverters, allows thyristors in two converters, e.g. a voltage converter and a field controller, to be triggered by the same components according to different laws. It may be used in the metallurgical, ship buildings, textile, railway, etc. industries. And AND-gate is connected to the output of a clock pulse counter and has its own output coupled to the power thyristor in the other converter. The circuit also contains two groups of AND-gates connected to clock and reversible counters, a NOR-gate, a sign flipflop, and two further single AND-gates.