baber/WOPTO huggingface dataset:
Patent DE-2436638-A1 (DE)
Title: Voltage limiter for variable gain amplifier output - has limiting element in feedback loop
Inventor: GIERA JUERGEN
IPC: H03G11/00
Filed: 1974-07-26
Abstract: The operational amplifier (p1) is provided with a feedback loop containing an element, controlled by a separate voltage limiting circuit, e.g. a FET (p5) with variable channel resistance, so as to control the amplification ratio of the operational amplifier (p1). The feedback loop may also include a further amplifier (p3) which allows the voltage limit to be present to a different value in dependence on the polarity of the output of the operational amplifier (p1). A switch (b1) may be provided to allow the voltage limiting circuit to be selectively brought into operation, or the FET (p5) itself may be used to block the voltage limiting circuit.
Patent DE-2440275-A1 (DE)
Title: Ignition control for IC engine - has comparator comparing synchronising pulses from crankshaft with actual ignition in cylinders
Inventor: TEETZ GUENTER
IPC: F02P5/15
Filed: 1974-08-20
Abstract: The ignition control, for an I-C engine, makes use of a train of synchronising pulses which are generated by the crankshaft (e.g. by means of a toothed disc and a scanner). The train of pulses is passed to a comparator where it is compared with a pulse train detected by a sensor in the combustion chamber and representing the actual ignition point. The comparator output is passed to a delay circuit that releases the ignition pulses only when the sum of the comparator output is equal to that of the synchronisation pulses from the crankshaft.
Patent DE-2443848-A1 (DE)
Title: Mechanical butt-joining or lap-joining of plastics components - with the aid of nuts and bolts having specially shaped bearing surfaces and heads
Inventor: HANSTEIN FRIEDRICH
IPC: F16B5/00
Filed: 1974-09-13
Abstract: Thermoplastics components are mechanically lap-joined or butt-joined by drilling the components to be joined (in the case of butt-joining) so that a semi-circular bore is formed in each component, whilst, in the case of lap-joining, the components to be joined are both drilled through. A bolt which has been heated to above the glass transition temp. of the thermoplastics being used and whose head is profiled on that side bearing upon the plastics component is passed through the bore. Its shank has a dia. smaller than the bore. It is then joined with a washer whose bearing surface may be profiled, tightened so that the profiles are firmly pressed into the surfaces of the plastics components, and finally allowed to cool. Generation of internal stresses in the plastics is minimised so that there is no risk of cracking, esp. with matls. having poor notch impact strength e.g., acrylic glass. Used in mfr. and assembly of furniture components, balcony parapets, banisters for stairs etc.
Patent DE-2444433-A1 (DE)
Title: Brake rubber contg. nitrile rubber, polybutadiene, silicic acid - phenol-formaldehyde resin and softener, esp. for bicycle brakes, giving good wet braking
Inventor: FAVINI IGNAZ
IPC: F16D69/02
Filed: 1974-09-17
Abstract: A brake rubber compsn., esp. for bicycle brakes, contains (a) a blend of 50-75 (60) wt% nitrile rubber and 50-25% polybutadiene, (b) 45-70 (60) wt%, w.r.t. total elastomer, of silicic acid, (c) 10-33 (15) wt%, w.r.t. total elastomer, of a phenol-HCHO resin with a hardener, and (d) 10-33 (20) %, w.r.t. total elastomer, of a softener, to give a rubber compsn. with Snore hardness 88-93 degrees (88-90 degrees). The compsn. gives good braking in wet conditions. It is resistant to oil and gasoline, to temps. down to -40 degrees C, and to abrasion. The vulcanisate has good adhesion to ice and snow.
Patent DE-2445298-A1 (DE)
Title: Coded keyboard for typewriter - uses limited number of keys of which one, two or more must be struck for each symbol
Inventor: GINNOW HARTMUT
IPC: B41J5/10
Filed: 1974-09-21
Abstract: The keyboard consists of 10 operating elements or keys divided into two fields of 5 keys each thereby facilitating its normal operation. One of the 10 keys serves as the shift key for selecting capital letters. The remaining 9 keys are assigned to the 9 most frequently used letters of the alphabet. The sum of the frequencies of these 9 letters amounts to about 70% so that for the majority of requirements only one key has to be operated. The remaining letters and symbols are selected by operating a combination of two keys. In this way a total of 45 symbols can be used which number is increased to 90 with the use of the shift key.
Patent DE-2453461-A1 (DE)
Title: Mechanised cattle feed distributor - has inflow pipe and distributor compartment for individual feeding pipes closed by slide pieces
Inventor: STREICHER MAX
IPC: A01K5/02
Filed: 1974-11-12
Abstract: The distributor compartment is tubular and has connected to it separate feeding pipes for several feeding points. The feeding pipes open into the distributor compartment, and the openings of the feeder pipes are closed by a plate in which is at least one hole. The distance between the centres of the holes in the slide-plate is larger or smaller by at least the diameter of these holes than the distance between the centres of the openings of the feeder-pipes. The distributor compartment consists of at least two trough-shaped sections and is placed directly underneath feeding-troughs. A return pipe returns the feed-stuff to a mixer. The slide-piece is driven by a motor which operates a position switch. A pump supplies the cattle food.
Patent DE-2461004-A1 (DE)
Title: Handle for safety power switches - has tensioning element between at least two bars which can move relative to each other
Inventor: SCHLOESSLER ERWIN
IPC: H01H5/14
Filed: 1974-12-21
Abstract: One of the parts of the bar is a lever (2, 2') which is rotatable about an axis (8), the other part of the bar is a switching lever (4) which is connected through the tensioning element (3) to the rotatable lever, and it is rotatable about the same axis (8). The tensioning element (3) is fastened to the rotatable lever (2, 2') and it is also fastened to the switching lever (4), while a cam (5) with at least one driver surface is provided on the rotatable lever (2, 2'). The tensioning element or spring (3) is used as an energy store as the band lever is moved and the energy is then subsequently released.
Patent DE-2502194-A1 (DE)
Title: Key actuated switch with cylindrical lock - has holding cap between cylindrical lock nut and front plate rear side
Inventor: GOTTSCHALK DIETER
IPC: H01H27/06
Filed: 1975-01-21
Abstract: The key actuated switch has its cylinder lock secured by a nut on a front shield or a housing lid. The switching element is actuated by the cylinder lock via a slot. Between the nut (11) of the cylinder lock (1) and the rear side of the front shield is clamped a holding cap (3) of resilient material. The cap has recesses (28) into which engage lugs on a securing disc on the switch. Preferably the holding cap surrounds the cylinder lock and the securing disc. The recesses at the lower end of the holding cap may be bevelled for easier engagement by the lugs. Typically the holding cap has a stud entering a recess in the front shield, which prevents rotating of the cap during assembly and locking.
Patent DE-2503961-A1 (DE)
Title: 3-Piperazinyl-2-(thio)morpholino-isoquinolines - as agents prolonging blood clotting time and thrombocyte agglutination inhibitors
Inventor: NICKL JOSEF DIPL CHEM DR
IPC: C07D417/14
Filed: 1975-01-31
Abstract: Isoquinolino (I) and salts thereof and medicaments contg. (I) are new (where R1 is H, 1-3C alkyl, 1-3C-alkanoyl or (1-3C-alkoxy)carbonyl; R2 is morpholino, thiomorpholino or 1-oxidothiomorpholino, R3 is H, F, Cl, Br, Me, MeO or NO2).
Patent DE-2504496-A1 (DE)
Title: Sodium cooled breeder reactor with fixed standpipe access - has core mounted to move on hydrostatic bearings
Inventor: LIEVENSE KORNELIS VAN
IPC: F16C32/06
Filed: 1975-02-04
Abstract: A liquid-sodium cooled fast breeder reactor comprises a reactor core completely immersed in liquid-sodium inside a reactor vessel; handling equipment enables fertile and fissible fuel elements and other components to be changed in the core and either left in storage in the sodium inside the tank or completely removed from the tank. The reactor core is movably mounted on a number of hydrostatic bearings, the liquid for these bearings being the liquid-sodium itself. Pref. the core is mounted upon the hydrostatic bearings only during changes in its position, and is at other times firmly supported. For all the fuel changing and element changing operations, the core itself is moved to the required position to enable the relevant element to be located perpendicularly below the handling standpipe at the top of the vessel. This eliminates the need for revolving, circular access panels in the top of the vessel and also restricts the size of the seal required for the gas above the sodium to the diameter of the standpipe, thus enabling a much higher vapour pressure to be maintained in the reactor vessel without problems. This is turn enables a larger pressure difference to exist across the circulating pump without risk of cavitation at the suction side.
Patent DE-2508442-A1 (DE)
Title: Electromagnetic system with relative motion between branches - has central core with threaded end and cup shaped section limiting displacement
Inventor: SEILLY ALEC HARRY
IPC: H01F7/16
Filed: 1975-02-27
Abstract: The electromagnetic system consists of two magnetisable branches which can move relative to each other with one or several windings which are supplied with a current. The magnetic field produced is such that it will cause relative movement between the two branches. A central core (10) has a threaded pin at the end, by which it is screwed onto a support member (11), and a cup-shaped section (12) is between the core and the support. The cup produces a ring-shaped branch (13) around the core and at the same time limits the actual motion of the core. One branch of the electromagnetic system forms several slits lying side to side in the plane of one of the members, and the other branch forms several protrusions which fit inside the slit.
Patent DE-2510203-A1 (DE)
Title: Incident light microscope - for direct non-destructive examination of inner surface of hollow bodies uses right-angled deflection
Inventor: VOENEKY GEZA
IPC: G02B21/08
Filed: 1975-03-08
Abstract: The end of the tube (1) which observes the object (14) is inserted in the hollow body. A sight-angled deflection of the beam path (19, 24) is provided e.g. by a prism (3). A mounting stand (8 to 12) and mounting surface (13) are provided and the end of the tube (1) extends below the mounting surface (13) of the mounting stand (8 to 12). The mounting stand (8 to 12) comprises a setting-up plate (8) with an opening for the tube (1) and a parallel guide of a carriage (11) or similar for focusing. The parallel guide is preferably parallel to the last part (24) of the beam path. The microscope is fixed to the carriage (11).
Patent DE-2511632-A1 (DE)
Title: Self cleaning, filtration unit for suspended or dissolved matter - with swilling action on filter surface increased by rotor
Inventor: RENZ WERNER
IPC: B01D29/90
Filed: 1975-03-17
Abstract: A filtration unit for separating suspended and/or dissolved matter from fluids, consists of a vessel divided by a filter arrangement into a concentrate and a filtrate chamber. The filter arrangement is formed by a basket symmetrical to its vertical axis, extending above the level of the housing vessel, its inner surface being lined with a filter material. At least one feed pipe injects the fluid to be filtered, under pressure, tangetially, and with a slightly downwards inclination, into the filtration zone, the outlet of which is located centrally at the bottom of the vessel. Coaxially with the filter basket, a motorised displacement body, is suspended. It is dimensioned so that the section of the flow passage between it and the basket diminishes progressively downwards, and its surface may have projections to accelerate the speed of the fluid as it rotates. The unit prevents interference with the functioning of the filters by deposits of solid matter.
Patent DE-2516563-A1 (DE)
Title: Fibrils made by shearing precipitating polymers - producing styrene or vinyl fibres at ambient temp
Inventor: SANDER BRUNO DIPL CHEM DR
IPC: D01D5/40
Filed: 1975-04-16
Abstract: Fibrils made by pumping a soln., in methylketone, tetrahydrofuran or 1,4-dioxan, of styrene, vinyl- or vinylidene-chloride into a chamber at ambient temp. which is simultaneously supplied with a liq. to cause pptn. of the polymer in a zone subjected to high shear at a work input rate of >5 W.s/cm3. For mfr. of fibres 0.5-30 mm long, 0.5-10 mym across, with a specific surface area of 10-70 m2/g and a fineness of 15-50 degrees SR (Schopper-Riegler scale). The fibres are suitable for mfr. of synthetic papers or cardboard or for use in moulding compsns. The fibres produced are readily isolated than those precipitated by coagulation in bulk from (hot) solns. The fibres produced are relatively white and behave similarly to cellulosic fibres when forming mats.
Patent DE-2517414-A1 (DE)
Title: Single-coat protective coatings - of cold-setting synthetic resin contg. fluorinated vinyl homo-or copolymers
Inventor: WIRTH THADDAEUS DIPL CHEM DR
IPC: C09D127/12
Filed: 1975-04-19
Abstract: Single-layer coatings are based on a mixt. of (A) a synthetic polymerisation addn. or condensn. resin, and (B) a hono- and/or co-polymer of vinyl monomers with =4, pref. =2, F atoms, in which (A) is hardened at =30 degrees C, by (a) oxidative drying, (b) physical drying, (c) cross-linking of a 2-component system, (d) acid-hardening (e) high-energy radiation, or (f) a combination of at least two of (a) to (e) without soln. or melting of component (B). Used to provide protective coatings on wood, ceramics, glass, concrete, plastics or esp. on metals, in vehicles, and ship-building, on components exposed to fuels and solvents, household equipment, electrical components and thermally-stressed articles. Excellent adhesion is obtd. without application of primers or intermediates layers. The coatings can be deformed e.g by deep-drawing, profiling, embossing, etc. and show high resistance to weather and chemicals.
Patent DE-2520812-A1 (DE)
Title: Steel tubes with large dia. prodn. - by descaling, progressive local heating and quenching and widening
Inventor: GONDO HISASHI
IPC: C21D8/10
Filed: 1975-05-09
Abstract: Steel tubes with large dia. are produced by (a) descaling the tube, pref. by >90%, (b) a heat-treatment comprising a progressive local heating of the steel tube from one end to the other in axial direction and quick cooling, and (c) widening the tube, e.g. by mechanical or hydraulic means. Tubes can be used as pipelines for natural gas and petroleum. Tubes have high accuracy of shape, tenacity and tensile stress. Heat-treatment comprises the quick and local heating of the tube to a temp. between the Ar3-transformation point and the temp. at which coarsening of the austenite grains sets in, and strong cooling to quench the tube.
Patent DE-2526496-A1 (DE)
Title: Shutter mechanism with liquid crystal cells for special camera - has separate cells for opening and shutting
Inventor: WILD PETER J DIPL ING
IPC: G02F1/1347
Filed: 1975-06-13
Abstract: A shutter mechanism has at least one electro-optical partial shutter comprising two field-effect liquid crystal cells and three polarizers located before, between and after the cells respectively. The cells (1, 2) and the polarizers (3, 4, 5) are orientated with respect to their forward directions so that one cell (1) is operated to open the partial shutter and the other cell (12) is operated to close it. Pref. the forward direction of the polarizer (3) before the first cell is axis-parallel to one of the two surface orientation directions of this cell, and the forward directions of the second and third polarizers (4, 5) are normal to that of the first and axis-parallel to one of the two surface orientations of the second cell (2).
Patent DE-2530239-A1 (DE)
Title: Deodorisation of waste air from animal processor - which prevents entry of high odour releasing materials into wet chemical treating plant
Inventor: NEUMAUN JOERG DR ING
IPC: B01D53/34
Filed: 1975-07-07
Abstract: Method of reducing the odour intensity of waste air from animal processing and other plants is carried out by extracting the air most heavily laden with odour-releasing material directly from the collecting points, e.g. boilers, troughs for raw materials, etc. This air is injected into the aerating tanks of an existing clarifying plant to aerate the liq. to be clarified, and after passage through the liq. and preliminary purification it is drawn off again from the covered aerating tanks. It is then passed to a normal wet chemical waste air treating plant designed for medium odour intensities. Reaction chemicals are saved by preventing the high-intensity odour-releasing materials from entering the wet chemical treating plant. Dust is also removed before entering this plant, which prevents blockage.
Patent DE-2530793-A1 (DE)
Title: Automatically braked castor wheel - with floating axle inside braking sleeve for resilient depression upon loading
Inventor: CHRISTEL HORST-DIETER
IPC: B60B33/00
Filed: 1975-07-10
Abstract: The castor wheel (5) is made from a single plastic moulding and is held in the forked housing (1, 2) using a fixed axle stub (4), with the axle hole through the wheel with sufficient clearance to provide play. The wheel is held in a floating setting on the axle by an elastic spacer ring (8) between the wheel and the axle. As the castor is loaded the ring is depressed on the bottom section to increase the friction between the wheel and the axle. The amount of braking effect is not unduly increased with loading, while the unloaded setting still has some residual braking to prevent the furniture item from rolling away.
Patent DE-2535426-A1 (DE)
Title: Pressure controlled injection moulder for highly accurate prods. - holds post injection load temporarily below that causing breathing
Inventor: LANDLER HEINRICH
IPC: B29C45/57
Filed: 1975-08-08
Abstract: In as injection moulding technique for the prodn. of components of synthetic materials, after the moulds has been filled, a controlled post-pressurisation is effected on the mass in the mould. In a first phase, the post-pressurisation is kept at a low value so as to prevent breathing by the mould, and in a subsequent phase, the holding pressure is raised to a higher value. Prevents the opening of the press moulds and the formation of spew fins at the joints, so that highly accurate components can be produced without any diminution of surface or cross-sectional material quality.
Patent DE-2536397-A1 (DE)
Title: Hot-melt adhesive for sealing vehicle windscreens - contg. elastomer, tackifier, softener, adhesion promotor and filler, needing no primer
Inventor: KUTCH EDWARD F
IPC: C09K3/10
Filed: 1975-08-14
Abstract: In a sealing system, esp. for vehicle windscreens, the sealant compsn. contains (a) 10-200 pts. wt. elastic polymer, (b) 1-200 pts. wt. tackifier resin, (c) 10-400 pts. wt. softener, (d) 0.5-60 pts. wt. adhension promoters, and (e) 5-500 pts. wt. filler. The solidified hot-melt compsn. forms a seal between glass and the metal groove. No primer is needed on the metal or the glass. The compsn. is sufficiently fluid at 65-205 degrees C to be applied with a gun; it hardens rapidly on cooling. The elasticity and adhesion are not affected by water, air, oils, polishes or climatic conditions. The compsn. is easily prepd. and can be transported in a form ready for use.
Patent DE-2537040-A1 (DE)
Title: Vacuum clamp for making timber plywood - has readily replaceable restrictor and filters for preventing stoppage by dirt
Inventor: HOERNIG PETER
IPC: B25B11/00
Filed: 1975-08-20
Abstract: The nozzle arrangement is used in a vacuum clamping fixture for holding a piece of timber for making plywood. It ensures that the nozzle is not readily blocked eliminating the need for cleaning and replacement of the whole nozzle assembly. In the case of stoppage due to dirt the nozzle itself is readily replaced. The nozzle body has central bore for flow connected to radial flow channels. The restrictor orifice (11) of the nozzle body (5) of a nozzle (12) is readily replaced. The outlet openings of the flow channels (13, 14) are provided with replaceable filter elements (15). A filter element has circular shape or the filter elements can be cube shaped.
Patent DE-2539415-A1 (DE)
Title: Two-way telephone station - has buzzer used for indicating call arrival and also has means of indicating waiting time
Inventor: SCHOEN SIEGFRIED
IPC: H04M3/58
Filed: 1975-09-04
Abstract: The two-way telephone station uses a cheap buzzer as an acoustic indicator for both communication directions. Despite the simplicity the buzzer still allow the line carrying the incoming call to be identified unambiguously. The writing time for a call can also be indicated without additional circuitry. The buzzer (S1 or S2) is connected in series with a capacitor (C1) into the station call current circuit. An LED (LD1) is connected into a rectifier bridge in the call circuit. The buzzer and capacitor are shunted by a resistor (R1) and switch contacts (AH) that close on switch on and open again when the hadset is replaced.
Patent DE-2540046-A1 (DE)
Title: Seal for inner edges of coated paper cups - has sealer applied to blank inner edge and dried before rolling
IPC: B31B50/62
Filed: 1975-09-09
Abstract: The method of sealing the inner edges of coated paper cups has formed by rolling flat blanks with the edges overlapped. A single blank is aligned and held in position before applying a sealing composition to the inner edge before rolling. The blank is taken from a stack and is slightly curved and clamped when aligned, and the sealing composition is dabbed in the liquid state and then dried. A conveyor path and at least one pair of clamping jaws grip, hold and curve a blank. An applicator (19) for the sealing composition is movable relative to the jaws to touch the side edge of the blank. The applicator may be provided with a wiper of permeable absorbent material impregnated with the sealing composition.
Patent DE-2543544-A1 (DE)
Title: Determining degree of oxidn. of fats - by reaction with alcoholic base and indicator soln. of (2,6)-dichloro-phenol indophenol
Inventor: FISCHER WOLFGANG DR
IPC: G01N31/22
Filed: 1975-09-30
Abstract: Colourimetric determination of degree of oxidn. of a fat or fat-contg. food is achieved by reaction with an alcoholic base and a soln. of 2,6-dichlorophenol indophenol, (I). Process comprises admixing 1000 pts. fat with 1500-4500 (3000) pts. alcohol solvent for fat, 36-110 (72) pts. base and 0.04-0.23 (0.13) pts. (I). Quantity of thermal oxidn. prodts. is determined 2-5 min. after mixing through, by colour change from blue to yellow or brown. Process is partic. suitable for testing freshness of frying or roasting fats. Process is quick, simple and accurate. Soln. is blue with fresh unheated fats; turning to green for partly used, but good fats, to yellow when quantity of oxidised fatty acids reaches 0.7% and to brown when limiting value of 0.7% oxidised fatty acids is exceeded.
Patent DE-2545298-A1 (DE)
Title: Acoustically stamped film - having embossed stabilised peripheral zone for ease of alignment of ring foot of player unit
Inventor: WEIDEMANN HEINZ
IPC: G11B23/00
Filed: 1975-10-09
Abstract: In a circular acoustic stamped film which can be played a superimposed players having a lower circular foot, the film has an embossed stabilised zone on its outer periphery within which the ring foot of the player unit can be inserted. The film avoids the defficiencies of the known acoustic films and permits such a film to be produced with a saving of material, which facilitates the simple and precise alignement of the player unit without the risk of damaging the film.