baber/WOPTO huggingface dataset:
Patent DE-2757208-A1 (DE)
Title: Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln.
Inventor: FLOREANCIG ANTOINE GILBERT LUC
IPC: C01G43/00
Filed: 1977-12-22
Abstract: Uranium is extracted in situ from the ore deposit (or after ore mining and crushing) by a combination of oxidn. and leaching with O-enriched water under CO2 press. and alkaline earth carbonate or bicarbonate soln. The alkaline earth metals are either Ca or Mg. The CO2 pressure is reduced to 4 bar after the U has been oxidised and dissolved. This pressure is maintained and the CO2 released by the redn. in pressure is recovered for further use. The pressure is finally reduced to atmospheric press. and the soln. degassed by a vacuum treatment. The liq. is then treated with CaOH at pH 10-12 so that Ca uranate and CaCO3 ppte. are formed which are recovered. Process required adaption to the local conditions and there are therefore a number of variations and adjustments required, e.g. to restore the pH of the underground water alkaline earth hydroxide solns. are pumped into the bore holes. The Ca uranate may be treated with H2O2 in order to produce U peroxide which is recovered. The H2O2 treatment may also be used as a second leaching in situ operations. The U may also be recovered by ion exchange. In laboratory experiments a U recovery of up to 92% was obtd. The ore is oxidised in situ to produce a soluble phase, i.e. the method is much less expensive than a mining operation. The former (NH4)2CO3 process for the extn. left NH3 in the underground water and presented a serious pollution hazard. There is no pollution risk involved in the present process, and no ion exchange reaction takes place between Ca2+ and NH3+ ions as in prior art where Ca level of the leaching soln. was increased. When the soln. ascended from underground redn. of hydrostatic pressure caused released of CO2, so that the pH of the soln. increased thus precipitating CaCO3 which clogged the pipes.
Patent DE-2758685-A1 (DE)
Title: Washing machine circuit using phosphate-free cleaning agents - has swirl chamber with washing liquor agitating cation exchanger
Inventor: GRAUPNER WERNER ING GRAD
IPC: C11D11/00
Filed: 1977-12-29
Abstract: The difficulties with washing machines in which the washing agents are regenerated by passage through a filter containing cation exchanging materials such as silicates of aluminium, that the filter easily becomes blocked, are overcome. A washing agent which is poor in or is free from phosphtes is used, and the cleaning liquid which contains >=0,05 g/l of a water-soluble, calcium ion bonding, complex cpd. generating substance, is fed continuously or intermittently over a calcium ion binding, water containing, silicate of aluminium which is insoluble in water, and has cations inter-changeable with calcium. The silicate has a granular size of 0,05-1 mm, and is located in a swirl chamber in the circuit. The direction of flow in this is opposite to that of gravity, and the speed of flow of the fluid is less than the speed of precipitation of the silicate particles.
Patent DE-2800123-A1 (DE)
Title: Optical fibre cable safety unit - uses control device to reduce signal from radiation generator through optical fibre
Inventor: MAREY MOHAMED DR ING
IPC: G02B6/44
Filed: 1978-01-03
Abstract: The optical-fibre cable safety device has a control unit (8) which can be used at least to reduce the output signal from the radiation generator (4) especially in the case of line breaks. At least one electrical conductor serves as a control signal line for the control unit which may be coupled as directly as possible to at least one fibre line. The electrical conductor consists of an electrically conductive sheath (11) of at least one optical fibre line. The electrically conductive sheath (11) is evaporated onto the optical fibre line (3). The transmitter (1) includes a radiation source (4), a switching unit (6), a control unit (8), a control signal line (10) and a control signal output (9).
Patent DE-2800537-A1 (DE)
Title: 1-Amino-2-alkoxy-5-bromo-benzene prodn. - by brominating alkoxy-aniline, useful as intermediates for azo couplers
Inventor: GENGNAGEL KURT DIPL CHEM DR
Filed: 1978-01-07
Abstract: Prodn. of 1-amino-2-alkoxy-5-bromobenzenes (I) comprises brominating 1-amino-2-alkoxybenzenes (II), esp. using Br2 (pref. 0.5-0.6 moles per mole (II)) in 90-98% H2SO4. Reaction is esp. at -5 to 20 degrees C. (I) are intermediates for azo dyes, esp. they are used to make couplers useful in ice-dying (e.g. 2-hydroxy-naphthalene-3-carboxylic acid 2'-methoxy-5'-bromoanilide). Method is simpler than known methods in which nitro or acylamino cpds. are brominated then reduced or deacylated. Yields of (I) are high and they are pure enough to be used directly.
Patent DE-2801825-A1 (DE)
Title: Tapping tool holder with axial force compensator - has helical spring with screw thread body held in spindle end
Inventor: SIEGLER GUSTAV
IPC: B23B31/08
Filed: 1978-01-17
Abstract: The tapping tool holder has a compensation mechanism for compression and tension. The spring (13) is axially loaded between the tapping tool holder (12) and the basic element (1). The spring and the associated connected screw thread body (14) form an adjuster, able to move axially but prevented from rotating. The spring spindle (11) is axially guided.
Patent DE-2809693-A1 (DE)
Title: Fireproof door actuating mechanism - has arm with roller moving on horizontal channel on door and cable released by melting of fusible element
Inventor: STEINICKE ECKHARD
IPC: E06B5/16
Filed: 1978-03-07
Abstract: The door is made of plates of insulating material and has a metal frame or rim, holding the plates and allowing fastening of the door in the closed position. The metal frame on the door is intended to overlap the frame of the door opening, giving a good seal. The door may be used in factories to provide access for conveyors. It is closed by vertical movement by an actuating arm swinging in an arc. The door may be used as a sealing fire door. A mechanically strong construction is achieved, with light sealing round the edge when the door is closed.
Patent DE-2812503-A1 (DE)
Title: Profiled bar for rail coupling - is of basic rectangular section with hooked flanges on opposite sides
Inventor: STOCZEK HANS JOACHIM
IPC: E04B2/78
Filed: 1978-03-22
Abstract: The profiled bar is for filling in and/or coupling grooves in profile rails of C-section or one built up from it. It is of basically rectangular cross-section, having on each of two opposite sides(2) two flanges (3), whose cross-section shapes form a hook open towards the outside and/or towards each other. The distance between the outermost flange edges is greater than the width of the rail groove, while that (C) between the flange roots is smaller than the width of this groove.
Patent DE-2812604-A1 (DE)
Title: Data recording disc running mechanism - has positioning motor guiding magnetic head on different tracks of disc and has drive motor
Inventor: BAUER PAUL
IPC: G11B17/32
Filed: 1978-03-22
Abstract: The disc or data recording disc running mechanism has felt pressure pads which press the diskette against the magnetic head. The disc (5) is driven by a motor via a worm gear. During pauses in the operation of the disc running mechanism the drive of the disc is stopped while it is being made ready. While this is happening, the pressure pads (37) remain placed on the diskette. The disc drive may be stopped by switching off the drive motor. The disc may be driven via a worm gear between a disc-clamping device and the drive motor.
Patent DE-2814886-A1 (DE)
Title: Mixing valve for central heating plant - has flow from solar heating medium arranged to have priority over supplementary heated fluid
Inventor: APPUN ERNST
IPC: F24D19/10
Filed: 1978-04-06
Abstract: The mixing valve has connection and stopcocks for two pipes through which a heating medium flows. One of the heating media is used in preference. One connection (4) and one stopcock (16) is provided for a pipeline (40), through which coolant flows. A first temp. dependent control element (19) opens either the stopcock (16) for the cooling medium or the stopcock (14) in the second heating medium or neither. A second pressure dependent control element (13) controls the opening or closing of a stopcock (12) which controls the flow of the primary heating medium.
Patent DE-2818808-A1 (DE)
Title: Automotive gearbox change coupling - has hollow piston with inside ring convolution pressing on end plates
Inventor: KLAUE HERMANN DR ING
IPC: F16H63/30
Filed: 1978-04-28
Abstract: The change coupling is for an automative gearbox, and is fitted outside the gear oil chamber. A hydraulically or pneumatically activated operating piston encompasses with its cylindrical part a closure connected to the driven shaft. The operating cylinder chamber is arranged inside and in the axial area of the group of plates. Both piston and closure cover are conically shaped in the area of the operating cylinder chamber.
Patent DE-2828449-A1 (DE)
Title: Clock driven by descending weight - uses weight as pointer cooperating with linear time scale
Inventor: SCHIFFER FRITZ
IPC: G04B19/04
Filed: 1978-06-29
Abstract: The clock has a linear time scale marked along a vertical element with the pointer cooperating with this time scale to indicate the time. It also acts as the descending wt. which drives the clock mechanism. When the pointer reaches the bottom end of the time scale it is returned to its initial position at the top of the latter by an electric motor. Pref. the pointer is attached to a chain passing around one of the drive wheels for the clock mechanism, with the other end of the chain coupled directly or indirectly to the shaft of the electric motor.
Patent DE-2829654-A1 (DE)
Title: Synchronisation monitoring circuit for two independent clocks - has respective stores coupled to comparator and logic circuits
Inventor: HAGMEISTER THOMAS
IPC: G04D7/12
Filed: 1978-07-06
Abstract: The monitoring circuit for two independent digitally-controlled clocks has means for entering the indicated time points provided by each clock is respective store one after the other, starting with the point at which the max. deviation between the two clocks is allowed. The store outputs are coupled to a comparator which provides an error signal when the two outputs do not agree. A logic circuit inhibits the error signal in the region of the lowest acceptable point, while a second logic circuit checks whether the value at the least acceptable point contained within one of the stores is within the given deviation range before or after reaching this point to inhibit the error signal for subsequent points when it is within this range.
Patent DE-2834081-A1 (DE)
Title: Food smoking generator - maintaining constant sawdust layer for smouldering zone
IPC: A23B4/052
Filed: 1978-08-03
Abstract: A smoke generator for the smoking chamber where meat, sausages or fish are suspended, has a hopper for sawdust or other smoking material. A layer of its contents of equal height is traversed by hot air to produce distillation gases. This height is independent of the level inside the hopper. This smoke generator ensures a very uniform smoke prodn. yet it requires no mechanically moving parts.
Patent DE-2836436-A1 (DE)
Title: Solar heater without collector heating water directly - as it flows over roof or other surface receiving radiation
Inventor: SCHLESIER HARALD
IPC: F24S10/60
Filed: 1978-08-19
Abstract: Water is distributed from a header pipe and is allowed to flow over a roofing surface heated by the sun into a gutter from which it is drained off to a storage reservoir or possibly recycled. The method is cheaper since collectors for the solar radiation are not necessary, and the assembly of the parts required is much simpler.
Patent DE-2837475-A1 (DE)
Title: Ignition circuit for otto engine using parameters for signals - controls timer logic with counter, transfer store and comparator logic with A=D converter to process parameters
Inventor: OKSTAJNER TOMISLAV DIPL ING
IPC: F02P3/045
Filed: 1978-08-28
Abstract: The ignition circuit is for an engine, which operates on an Otto cycle. The ignition point is a function of parameters such as the position of the gas pedal, the setting of solenoid valves or angular speed. These parameters are passed through an analog-digital converter. The speed of the engine is used to control a timer logic circuit(1). This logic is followed by a counter (2) and a transfer store (3). The output from the store is fed to a comparator logic (4), which is again followed by another store (6) and a second comparator logic (7).
Patent DE-2837609-A1 (DE)
Title: Box for magnetic tape cassettes - has elastic strip attached to hinged cover and carrying spring at end and locking elements for spool hubs
Inventor: SAUERMANN KLAUS
IPC: G11B23/023
Filed: 1978-08-29
Abstract: The box has a case (1) fitting the cassette, and a hinged (4) cover (3) on a narrow side (2), with an elastic plastics strip (9) attached to it at the middle of its inner surface. It is bent at its free end at a right angle (11), so that it serves as a stop for the cassette. The bent part of the strip (9) carries a leaf spring (13) pointing inwards, and two elements (15, 16) are stamped out from the strip for locking the cassette spool hubs.
Patent DE-2839731-A1 (DE)
Title: Azido-deca:hydro-hydroxyphenyl-methyl-isoquinoline isomer - useful as analgesic and CNS depressant
Inventor: PFAEFFLI PAUL DR
IPC: C07D217/16
Filed: 1978-09-13
Abstract: (4a, RS, 6SR, 8aRs)-6-Azido-decahydro-4-a(3-hydroxypheny l)-2-methyl-cis-isoquinoline of formula (I) is new. (I) is an analgesic which, unlike the (4aRS, 6RS, 8aRS) isomer, also acts as a morphine antagonist. It also has antidepressant, tranquillising and hypnotic activity. (I) is prepd. by reductive methylation of (4aRS, 6SR, 8aRS)-6-azido-decahydro-4a-(3-hydroxyphenyl)-cis-isoquinoline (II), which can be prepd. by reducing 2-benzoyl-octahydro-8a-(3-methoypheny l)-cis-6(2H)-isoquinolinone with NaBH4, sepg. the resulting isomers by TLC, and debenzoylating the 6SR isomer.
Patent DE-2844228-A1 (DE)
Title: Room heating control for heat pump system - has compressors controlled by room thermostats to suit instantaneous heating requirements
Inventor: MUELLER WALTER
IPC: F24D19/10
Filed: 1978-10-11
Abstract: The heating system using a heat pump, switches the compressor in and out depending on the heat requirement. Room thermostats are connected to a conductive bridge in which all the currents are combined in a common current. Each branch uses a potentiometer so that the compressor can be operated independently but corresponding to the heating requirements. The system uses miniaturised electronic components, which operate individual valves to control the flow of heating medium. The instantaneous heating load for more than one building can be controlled by the system. The speed of rotation of the compressors can be regulated accordingly. A solid fuel fired boiler can be used.
Patent DE-2849199-A1 (DE)
Title: Non clattering secure rail guided roller shutter - has single walled slats forming flat strip when extended
Inventor: GOERN WALTER
IPC: E06B9/165
Filed: 1978-11-13
Abstract: Individual slats are hung with interlocking flanges which can be thrust into the adjacent slat, with the ventilating slit covered, in the roller shutter which is guided in side U-profile rails (10). Slats are shaped to wedge together when folded, so that a clamping action is effected in the rail, in the event of thrust from below. Here the slats (16, 18) are single-walled, and display the shape of a flat strip of material when spread out. Each may have a hook-shaped holder (22) at the top edge, and a hook-shaped flange (24) at the bottom edge. The shutter does not clatter in the rails in windy weather, is secured from raising from below, and is inexpensive to produce.
Patent DE-2851783-A1 (DE)
Title: Automatic breaking of edge strips off glass panes - where sets of rolls are used to exert bending moment across notch scored in pane
Inventor: KREMER HEINZ-JOSEF
IPC: C03B33/033
Filed: 1978-11-30
Abstract: A longitudinal score is made near one or both edges of the pane, which is then laid and stationary on a conveyor; and on each side of the conveyor is a jib from which a C-shaped frame is suspended so it can be moved transversely w.r.t. the longitudinal edges of the pane. The C-shaped frame carries rolls which are located both above and below the pane and are used to exert a bending moment on the pane so it fractures along the score. The roll nearest the outer edge of the pane is driven vertically to apply the bending force; and the position of the rolls w.r.t. the pane is pref. controlled by an infrared switch. More than one score can be made so that narrow strips of glass can be successively broken off the pane. The glass pane may be over 6 metres long, and several breaking units may be used in two rows along each edge of the pane; and all the rolls can be moved vertically to suit panes of different thickness.
Patent DE-2855965-A1 (DE)
Title: Earth-fault indicating circuit - responds only to large fault currents by using RC circuit between input and output amplifiers
Inventor: ROELLECKE HUBERT ING GRAD
IPC: G01R31/02
Filed: 1978-12-23
Abstract: The indicating circuit has amplifiers(1a) each connected at its input to one resistor(R1) shunting the secondary winding wound around the phase line being monitored. Each amplifier has an output diode(2a) and feedback(3a). An RC circuit(5a, 6a) is connected to the diode's output and is charged by the input voltage. The output of the RC circuit is connected via a second diode(7a) to an LED(8a) whose other end is coupled to a shared rail(9) connected via a resistor(10) to OV. The voltage on the shared rail(9) is measured by a comparator(11-13) whose output operates a relay. The advantage lies in the lack of response of the circuit to all small earth faults and capacitive return currents; it responds only to large fault currents.
Patent DE-2856824-A1 (DE)
Title: Cam controlled mfg. operation sequence - has electromagnetic clutches on auxiliary shaft to change sequence between various presses
Inventor: FLAMME WALTER ING GRAD
IPC: B21J13/00
Filed: 1978-12-30
Abstract: A sequence of operations by different types of presses, and the transfer of workpiece from one press to another is controlled by a set of cams (6-10) mounted on a common shaft (2). The cams are connected to the shaft by hydraulically operated clutches. Each cam is connected to a pair of gear wheels (11-20) which mesh with pinions (21-30) mounted on a parallel shaft and can be connected to the shaft by electro-magnetic clutches. By engaging the appropriate clutch and switching on the motor (46), any one cam can be rotated relative to the shaft (2) and then the whole series of cams are hydraulically locked in their required positions.
Patent DE-2901833-A1 (DE)
Title: Two=stroke internal combustion engine - has piston in two sections of different diameters. for effective unidirectional scavenging
Inventor: RUPPERT FRANZ
IPC: F02B25/06
Filed: 1979-01-18
Abstract: The engine has a piston (2) reciprocating in a cylinder (1). The piston has an extension (4) above its main part. The extension is of a smaller dia. than the main part. The cylinder has an outlet (3) at its top which is narrower than the main part (10) and the piston extension rises into this outlet. This forms the outlet port which is opened and closed by the piston extension. The inlet transfer ports (5) from the crankcase open into the lower part of the main section (10) of the cylinder and are opened and closed by the main section of the piston.
Patent DE-2907819-A1 (DE)
Title: Directly coupled shaft torque measurement device - has spring loaded bearing torque transfer elements and force measurement sensor
Inventor: GRUENBAUM HEINRICH
IPC: G01L3/14
Filed: 1979-02-28
Abstract: A device for measurement of torques applied to or delivered by a rotating shaft in test and industrial equipment enables monitoring, maintenance, or program controlled regulation of the load on a machine. It requires no slip-rings or inductive coils and may be attached directly to the shaft where necessary. A transmission element(3), fixed axially to the shaft(1) but able to rotate about it, and a translation element(4), fixed rotationally to the shaft but able to move axially w.r.t. it, are separated by ball bearings(5) transferring the torque and loaded by return springs. The translation element is displaced by a distance proportional to the torque, which is transferred via a ball bearing(6) to a non-rotating force measurement element(9). The transmission element(3) can transfer torque to a coaxial(2) or parallel shaft.
Patent DE-2910281-A1 (DE)
Title: Large dia. drain cleaning installation - uses roller element moved along drain channel by liq. flow at lesser speed than liq. producing flow patterns suitable to flush away dirt and
Inventor: DINKELACKER ALBRECHT DR
IPC: B08B9/027
Filed: 1979-03-15
Abstract: The device cleans channels containing liq. and only partially filled such as drains of large dia. The cleaning action is performed by a roller element which runs along the base of the drainage channel driven by the liq. flow so that the speed of the roller cleaning element is less than the average flow speed of the draining liquid. This produces a flow round the cleaning element through which first and deposits are rinsed from the bottom of the drain channel and flushed away. The shape of the cleaning element produces a non-symmetrical side flow past the cleaning roller and also generates an after flow diverted by the roller track of the cleaning element.
Patent DE-2911896-A1 (DE)
Title: Spring latch for equipment case or cubicle - has removable operating handle to prevent unauthorised access, which fits into cut=out recess
Inventor: JESPERSEN AKSEL
IPC: E05C1/10
Filed: 1979-03-27
Abstract: The spring latch assembly is attached to the door or lid of a cubicle or case. It fits into a recess (6) cut into the lid (3). The latch comprises a spring (21), a bolt (14) and a cover plate (29). The cover plate has an axial slot (32) and guide (33) for the operating handle (36). To open the latch the operating handle is inserted into the slot and recess in the cover plate and pushed home to slide back the bolt against the spring. The lid can then be lifted by pulling on an extension (38) on the handle. The constituent parts of the latch assembly, with the exception of the spring, can be made of plastic mouldings giving a relatively inexpensive fitment.
Patent DE-2913868-A1 (DE)
Title: Liquid manure spreader unit - hydraulically driven thrower wheel distributor driven from behind by hydraulic motor
Inventor: AUWAERTER RUDOLF
IPC: A01C17/00
Filed: 1979-04-06
Abstract: The spreader unit has hydraulic driven thrower wheel distributor with a rear drive. The distributor is driven from behind by a hydraulic motor and the drive motor sits directly on the thrower wheel shaft. The distributor can be driven without any linkage or other drive shaft.
Patent DE-2915352-A1 (DE)
Title: Low junction resistance sliding contact for rheostat - comprises silver, palladium and graphite particles in polyurethane binder
Inventor: GEYER HERMANN DIPL ING
IPC: H01C1/12
Filed: 1979-04-14
Abstract: Sliding contact consists of particles of Ag and Pd in 70:30 to 50:50 (60:40) ratio and of graphite, dispersed in a polyurethane resin. Pref. the one- or multi-component resin and a solvent are mixed with 30-50 wt.% Ag and Pd particles, 43-34% graphite and 1-2% antifoam. The solvent pref. is an ester, ketone or aromatic diluent e.g. xylene or toluene. The junction resistance is small, even in corrosive atmospheres, esp. on resistance layers with a rough surface and a total resistance of over 1 kohm.