baber/WOPTO huggingface dataset:
Patent DE-2365095-A1 (DE)
Title: Magnetic tape for recorder - has firmly attached leader tape for cleaning magnetic head
Inventor: BURMESTER DIETER
IPC: G11B23/26
Filed: 1973-12-24
Abstract: The problem of ensuring that the working parts of magnetic tape players, whether of the cassette or spool type, are kept as free as possible of dirt and dust, so as to reduce wear and tear, is resolved by attaching a substitute leader to the tape. The new leader is such that it cleans the magnetic playing head automatically, as well as the pressure and sound rollers and the tape transporting mechanism. The cleaning tape may be additional to the standard leader and may also be attached to the tape at both ends. A trailing attachment ensures that no dust or potentially damaging particles are left on the cleaned parts.
Patent DE-2401557-A1 (DE)
Title: Cyclopropyl-phenyl N-methyl-carbamate insecticides - prepd. by reacting cyclopropyl-phenols with methyl isocyanate or phosgene and methylamine
Inventor: BECHER MANFRED DR
IPC: A01N47/22
Filed: 1974-01-14
Abstract: Cyclopropylphenyl N-methylcarbamates of formula (I) (where R is H, Cl or CH3), e.g. 2-cyclopropylphenyl N-methyl-carbamate, are new cpds. which may be prepd. by reacting corresponding cyclopropyl-substd. phenols with (a) methyl isocyanate or (b) COCl2 followed by CH3NH2. (I) are pesticides particularly useful as insecticides against e.g. flies, aphids, cockroaches and bugs.
Patent DE-2403317-A1 (DE)
Title: Spreader jaw type stone breaker - has jaws removable by rotating through right angle about axis
Inventor: DARDA HELMUT
IPC: E21C37/04
Filed: 1974-01-24
Abstract: A stone breaking tool with a cylinder housing a hydraulically operated vertically reciprocated piston which forces downwards a tapered member attached by a pivot pin so as to force a pair of jaws inserted in a hole in the stone outwards, aso as to split the stone, has these jaws held by a spacer inside the bottom of the piston, so that the T-shaped heads of the jaws are trapped inside. These T-shaped portions are enclosed by a C-shaped spring, so thta turning a jaw, its head will pass through the slot of the spring and at the same time through a gap in the spacer, for eacy removal for repair or replacement. The pivot pin securing the top of the tapered member between them to the piston can be removed through a hole in the piston wall in a partially lowered position.
Patent DE-2404969-A1 (DE)
Title: Industrial pressure cooker - with controlled external steam supply may be used for both thawing out or cooking
Inventor: SHULZ ROBERT J
IPC: A47J27/08
Filed: 1974-02-01
Abstract: The large-scale steam pressure system with the quick thaw means for the the prior thawing of frozen food comprises an electrolytic steam generator which at the beginning of the cooking cycle is supplied with water and at the end of each cycle is emptied and rinsed out to remove any salt deposits etc. The steam is supplied to the cooking container through nozzles which direct currents of steam through the top of the pans to direct the air away from the food, thereby enabling a rapid transfer of heat to the food and restricting the salt deposits in the pan to a minimum. A thermostat in the cooking container automatically closes the discharge valve on the underneath of the container to seal the cooking chamber when the temperature has risen to a preset valve.
Patent DE-2409317-A1 (DE)
Title: Fibre-reinforced plastic container for heating oils - with cover consisting of fleece, mats, roving webs and resin
Inventor: ZIEGLER HUBERT
IPC: B29D22/00
Filed: 1974-02-27
Abstract: Fibre-reinforced plastic esp. polyester resin container for heating oils and similar matls. has a multilayered cover consisting of fleece(s), several mats and roving webs that are alternately in contact with impregnating resin and a curved plate piece with a laminate covering the butt joint. The method provides simple, cheap prodn. of relatively large containers, e.g. >1500 1. The cans are transparent thus enabling the amt. of contents to be easily determined. They have good resistance to impact and erosion caused by water present in heating oils.
Patent DE-2426569-A1 (DE)
Title: Cherry, cream and chocolate sandwich cake prodn moulds - enable assembly of details to be speeded up, and facilitate stacking and storage
Inventor: HELD PETER
IPC: A21D13/08
Filed: 1974-05-31
Abstract: Multi-layer sandwich type cakes assembled from ready-baked sponge slices etc., with fillings, are produced in formers, into which the materials are laid in reverse order, top layer first. Depressions may be provided in the mould bottom for positioning fruit trimmings, etc., and there may be the negative of a slogan or ornamentation, to be filled in first with materials of different colours, as well as projections to indent the surface for cutting into equal portions. This provides a simple method of producing accurately assembled cream cakes of faultless appearance with unskilled labour.
Patent DE-2431282-A1 (DE)
Title: Embossed tufted carpet - with relief pattern formed by shrinking some of the tufts which are adhering to adjacent tufts
Inventor: BOHRN WALTER JOHN
IPC: D06C23/04
Filed: 1974-06-28
Abstract: Tufted carpet, which is crush-resistant, has a relief pattern which is produced by shrinking selected tufts and allowing the fibres of the tufts to adhere to adjacent tuffs whilst maintaining the individual structure of the adhering fibres. Carpet is produced by treating the carpet in selected areas with a liq. contg. a solvent for at least some of the fibres forming the tufts; treating the carpet with steam to activate the solvent and break the loop of the tufts and use the tacking property for bonding the adjacent fibres to one another; washing the carpet to remove the solvent; and drying the carpet.
Patent DE-2442398-A1 (DE)
Title: Mesa semiconductor elements prodn. from wafer - using only one photolithographic etching stage
Inventor: GEISLER ULRICH
IPC: H01L23/485
Filed: 1974-09-04
Abstract: In the prodn. of a no. of mesa semiconductor elements, each with a plane pn-junction, which joins the semiconductor surface at the edge of the mesa and is covered with a SiO2 film there, by providing the entire area of one side of a semiconductor wafer with a pn-junction surface, then dividing into mesas by photolithographic etching, oxidising the surface with the mesas and parting the wafer into elements, the following stages are used: (a) after prodn. of the pn-junction over the entire area, one surface of the Si wafer is coated with Si3N4 and then with SiO2; (b) an etching mask is produced from the SiO2 film, which covers the Si3N4 film over the mesas to be produced; (c) the exposed part of the Si3N4 film and the underlying semiconductor matl. are etched away to split up the pn-junction area; (d) the exposed Si surface is oxidised thermally, the Si3N4 film masking the front surfaces of the mesas against oxidn.; and (e) the Si3N4 film is removed from the mesas with a selective etchant.
Patent DE-2449379-A1 (DE)
Title: Fuel jet with cleaning sealing needle for oil or gas oven - has direct coupled pole pieces and fits wholly inside oven
Inventor: MUTSCHLER ERICH
IPC: F23D11/38
Filed: 1974-10-17
Abstract: A fuel jet for an oven is closed by a needle, which is retracted by an electromagnet when the oven is in use, to return under spring pressure when the magnet is de-energized, thus clearing any soot from the jet opening as well as closing it again. A shorter new version has the pole piece of the electromagnet coupled directly, by a U-shaped spring to the stem which carries the jet-closing needle. With the oven in use fuel passes from the inlet over a waisted section of the needle-valve stem and so along that stem to the jet. When the magnet is de-energized, a spiral spring resumes its full length, pushing the needle through the jet-opening again and placing a full-width part of the stem across the fuel inlet.
Patent DE-2450972-A1 (DE)
Title: Casting plant for mfg non-ferrous metal billets - using water tank beneath the mould to adjust cooling rate of billet
Inventor: KATSCHINSKI ULRICH ING GRAD
IPC: B22D11/124
Filed: 1974-10-26
Abstract: Process for cooling a billet surrounded by cooling water and leaving the mould in a discontinuous casting plant, esp. for casting non-ferrous metals, the novelty being that the billet travels through a water bath which is adjustable for height and is continuously by the water leaving the mould, and the surface of the bath is adjusted so it is below the base of the cone of liq. metal in the core of the cast billet but is as near as possible to the underside of the mould. Cooling water is pref. available to supply extra water to the bath according to the bath temp. and the pref. plant includes a water tank with adjustable overflow and seals. The process permits accurate control of the cooling of the billet according to its cross-section and the type of metal or alloy involved, so that no cracks occur in the billets.
Patent DE-2451361-A1 (DE)
Title: Coolant circulation in refrigerator of cold-storage plant - controlled drive-motor speeds maintain constant temperature at expansion valve
Inventor: JAKOB KARL
IPC: F25B49/02
Filed: 1974-10-29
Abstract: Method for controlling the coolant circulation in a compressor-refrigerated cold storage plant, so as to maintain a constant temperature (or, equivalently, pressure) at the expansion valve gauges uses variable-speed motors for the condenser fan and/or compressor drive, or preferably, under computer control - both of them and the cold-store fan drive also. The speed of the condenser fan is controlled to provide the same output temperature in all atmospheric conditions. The compressor speed must change when fresh food is put into the store. The draught through the evaporator - i.e., the cold store itself - is held within limits, keeping the air moving without causing too much drying.
Patent DE-2454834-A1 (DE)
Title: Composite damper for attenuation of vibration and noise - has piston rod reacting against main spring and damping piston against disc springs
Inventor: LOCHNER KASPAR
IPC: F16F9/32
Filed: 1974-11-19
Abstract: A damping device provides for the attenuation of mechanical vibrations, and the suppression of acoustic noise. The main housing (1) of the damper provides guidance for an input shaft (3) that carries a damping piston (4) that is restrained by disc springs (7, 8) held against stops (5, 6). A suitable damping fluid fills the chamber (1). The piston rod (3) projections into a chamber (10) that can either be open to atmosphere or else closed to provide an air spring action. The piston rod is supported at the top end against a main spring (9) that can be either in the form of an elastomer block, elastomer/metal composite or coil spring.
Patent DE-2459797-A1 (DE)
Title: Cement mouldings hardened with acetone-formaldehyde resin soln - using higher hardening temp to shorten time required
Inventor: CHERUBIM MARTIN DIPL CHEM DR
IPC: C04B28/02
Filed: 1974-12-18
Abstract: This is an addn. to 2353490 and 2353474, which described the mfr. of mouldings from cement, with which inorganic aggregates or finely-divided wood can be mixed, the cement or mixt. being made into a paste with an aq. soln. or an aq. -alcoholic soln. of an acetone-formaldehyde (AF) resin, cast into a mould, and hardened at 30-100 degrees C. Specifically hardening is now undertaken at 100-200 degrees C. pref. 140-170 degrees C. Instead of using a hardening time of e.g. 24 hours at 80 degrees C., as described in the earlier patents, the use of 3 hours at e.g. 140-170 degrees C. can be employed to achieve the same bend strength. Moreover, the transverse tensile strength, after immersion in boiling water, is improved.
Patent DE-2461786-A1 (DE)
Title: Thin walled containers of thermoplastic material - obtd. by injection moulding then drawing in same injection-drawing machine
Inventor: NAWRATH PETER
IPC: B29C45/00
Filed: 1974-12-30
Abstract: Injection-drawing of tubes and similar thin walled containers of thermoplastic matl. is effected by (a) forming an injection moulded part by a first moulding operation, and (b) effecting a further shaping of the moulded part inside the injection moulding machine. In step (b) the positions of certain components of the injection mould are altered, thus also causing an alteration in the shape of the moulded part by a drawing operation. The method avoids disadvantages of conventional methods for prodn. of thin walled containers. Thus drinking cups with a wall strength of less than 0.5 mm. can be made, this being impossible with normal injection moulding machines. The appts. is simpler and cheaper than injection/blow moulding machines. The method is reliable, and flexible with regard to tyres of producible containers.
Patent DE-2505678-A1 (DE)
Title: Matrix for reading punched cards - using conductor grid with photoconducting and semiconducting layers at grid junctions
Inventor: MEYER JUERGEN DR
IPC: G06K7/10
Filed: 1975-02-11
Abstract: In a reader matrix, esp. a punched card reader, using a crossbar distributor type of matrix with column- and row or line-conductor paths, each column and line junction being provided with a semiconductor layer of Se, Te or SexTe1-x, and a photo-conducting layer specifically the line conductor and the photo-conducting layer overlap, and between the line conductor and the semiconductor layer is an insulating layer (IL) with a thickness such that in operation the breakdown field strength of layer (IL) is exceeded in the forward direction of the semiconductor junction but not in the inverse direction. Used in program control operations, esp. in a automatic telephone equipment for number selection and transmission.
Patent DE-2507332-A1 (DE)
Title: Leaf spring solenoid valve - uses easy to deflect leaf spring for armature guidance only
Inventor: FEND ERICH ING GRAD
IPC: F02M51/08
Filed: 1975-02-20
Abstract: The armature for the valve aperture control is guided by a leaf spring. The spring is retained on the magnet frame, and fastened to the armature via rivets, etc. The leaf spring (3) is easily deflected and its dimensions correspond to the cross sectional dimensions of the solenoid valve (1). The armature (5) is only guided by the spring, and the fastenings point between spring, and the fastenings point between spring and armature is at such a distance from the fastening of the frame (7), that the spring applies no alignment forces relative to the armature. The spring and armature are positioned symmetrical to a central plane or axis of the solenoid valve, and the valve aperture is located in that plane or axis.
Patent DE-2510508-A1 (DE)
Title: High temperature combustion of waste products and fuel - with discharge and subsequent granulation of molten slag
Inventor: WOTSCHKE MICHAEL
IPC: F23G5/08
Filed: 1975-03-11
Abstract: In the high temperature treatment of solid and liquid fuels and waste products with molten slag withdrawal, (a) the stationary frustoconical combustion chamber, releasably connected to the axially symmetrical, horizontal or upwardly sloping, travelling conveying device with attached widening solids-filling shaft, is provided with a burner situated opposite to the filling shaft outlet, (b) the burner flame, which acts via the sloping surface inclined at 20-50 degrees from the conveyor shaft outlet to the bottom outlet on the non-gasified residue of the solid mixture via its core and operates in the stoichiometric zone, is thereby deflected and (c) the heat-containing molten slag running off the sloping surface leaves the combustion chamber in common with this via the bottom outlet, overflow of the molten slag from the periphery of the water cooled bottom outlet taking place only one one side. Provides a compact and novel combustion plant for waste product mixtures, particularly for use on board ship, the inert slag falling into a granulating channel through which sea water flows, the density of the solid granulated slag being such that it sinks to the sea bed when dumped overboard.
Patent DE-2518995-A1 (DE)
Title: Drivers cab for agricultural or building construction vehicles - has door hinged to sloping corner posts on vertical axis
Inventor: WOLFF GUENTHER
IPC: B60J5/00
Filed: 1975-04-29
Abstract: The drivers cab is constructed of four corner parts (1) connected by a roof section (2). The corner parts are formed of sloping upper and (7) lower (6) legs making an obtuse angle where they join a cross member (8) which carries a bearer (9) for an upper angle hinge (10) fixed to a cross member (17) on the cab door. The lower hinge bearer (24) is fitted vertically below to carry the straight pivot arm (25) bolted to the bottom door cross rail (18). The outer door surfaces lie parallel to the inclined outer surfaces of the corner post inclined legs. The pivot axis of the lower hinge (11) lies outside and the pivot axis of the upper hinge (10) lies inside the obtuse angle formed by the corner post legs.
Patent DE-2519222-A1 (DE)
Title: Container for small instruments - is built up from L-shaped corners and flat plastics plates with small peg interlocks
Inventor: DRIESCHNER HANS-PETER
IPC: H05K5/00
Filed: 1975-04-30
Abstract: The rectangular container for small instruments, or similar, is built up from a number of L-shaped corner members (1) between which are fitted a number of similar flat wall members (2). Each of these has small short cylindrical pegs or holes which mate with corresponding members of the other component. The ends of both the corner (1) and side (2) sections have out-turned flanges (5, 6) and circular holes (7) are drilled at the corners to enable bolted connections to be made adjacent units. The material of the main container components is typically plastics, with an enclosed area of cross-section of 72mm x 48mm. A front cover plate may be fitted.
Patent DE-2519644-A1 (DE)
Title: Hydrogen peroxide formation by electrostatic charge - using passage between charged insulated plates fed with hydrogen and oxygen
Inventor: KRANZ HERMANN
IPC: C01B15/029
Filed: 1975-05-02
Abstract: In the prodn. of low % H2O2 soln. by static electric charge in a reaction chamber, (a) the reactor consists of two conducting plates connected to an a.c. source, coated on both sides with a chemically resistant insulating coat, the space between them forming the electrically charged passage, (b) both plates have a coolant flowing outside them, (c) there is an inlet on the upper end for a mixture of H2, O2 and steam, (d) the bottom end of the reaction passage dips into a bath of water below. Used for making dil. solns. of H2O2. The chemistry of the process is well known. However in practice rapid decay of the product gives poor yield. The system described ensures good cooling of the H2O2 formed with its rapid absorption into water thus preventing back reaction and loss of product.
Patent DE-2523092-A1 (DE)
Title: Bed settee with outward sliding seats - has bed formed by filling gap between seats with cushions
Inventor: THIESMANN HEINRICH
IPC: A47C17/22
Filed: 1975-05-24
Abstract: The base of the bed-settee is in the form of a box (10) with a rail (11) attached to the upper edge of the central section of each side. The seat frames are provided with rollers (23) which run in these rails and are supported by a second set of rollers which guide rails attached to the seat frames. When the sets are moved outwards to the furthest extent a lid covering the box can be raised to provide access to the bedding stored within. The cushions (17) of the chair backs are used to fill the gap between the seats in the extended position in order to provide a level bed.
Patent DE-2526776-A1 (DE)
Title: Electric distribution boards voltage and earthing tester - comprises set of different diameter pipes with smaller diameter pipe acting as test spike
Inventor: HONNENS MAX DR ING
IPC: H02B1/16
Filed: 1975-06-16
Abstract: The voltage testing, earthing or short circuiting unit for electric distribution boards uses spikes thrust through a fixed earthing contact that is designed as a guide and retainer facility, whereby the spikes come into contact with the cooperating contact. The voltage and earthing spike provided for each phase is designed as a combined set that is insertable into the earthing contact, the combination set being provided with a locking facility that allows an earthing to be made only after a test spike has been applied. The combination set is specif. formed from pipes or tubes of various diameters such that the smaller diameter pipe is used as the test spike.
Patent DE-2531036-A1 (DE)
Title: Musical note transcription device and note playing system - has take up regulator and note conversion system
Inventor: PAPIC MIJO
IPC: G10F5/04
Filed: 1975-07-11
Abstract: A device to reproduce or illustrate musical notes, and to play musical notes which have been written down, has the staves or note lines arranged like the black notes of the instrument manula with intermediate while section, having lines representing both the tempo and manner of playing of the music, has a take up regulator device consisting of a photo cell system which is used to provide dynamic conversion of the written music. Devices are provided by means of which the notes may be written down when the system is not connected to a musical instrument.
Patent DE-2531972-A1 (DE)
Title: External broaching tool for machining flat faces - is tapered and set at angle to feed direction
Inventor: NIPPA ROLF
IPC: B23D37/06
Filed: 1975-07-17
Abstract: The arrangement is used for external broaching of flat faces on workpieces with at least one broaching cutter. This cutter is arranged at an a angle to the cutting direction. The arrangement ensures that the cutter length or the working stroke of the machine can be shortened on using the same feed length. The cutter is arranged parallel to the finished surface and its axis is inclined against the cutting direction. A tapered, round broaching cutter (31) has positive or negative pitch angle. This angle can be rotated at one end of the travel by an angle corresponding to the arc of engagement of the cutting teeth (32, 33, 34). The tapered broaching tool (31) is set with its axis (b) in the plane which is at right angles to the finish machined surface (10) and which includes the cutting direction at half the tapered angle.
Patent DE-2532170-A1 (DE)
Title: Rakes for removal of floating material in effluent channel - are mounted on pivot arms to intermesh in grid
IPC: E02B8/02
Filed: 1975-07-18
Abstract: The rakes are mounted on pivot arms supported pivotably on the free end of an arm fixed to a horizontal drive shaft, in the working zone of guides located above the drive shaft The guides permit the rakes to be tilted into an emptying position above a receiver for the raked material. Coarse floating maerial which is retained by and tends to block up the grid, can be removed entirely automatically.
Patent DE-2533842-A1 (DE)
Title: Reduction of sound level carrier - in cable transmission systems for television involves adjusting sound carrier independently of vision carrier
Inventor: LEITNER ERWIN DIPL ING
IPC: H04N5/60
Filed: 1975-07-29
Abstract: Each channel has a band width of 5MHz. In order to avoid distortion on adjacent channels it is necessary to lower the level of the sound carrier, independently of the vision carrier. The circuit adopted consists of a mid frequency amplifier (ZF) and a distortion compensator (E), with a filter circuit located in between. The filter circuit consists of inductance (L) and, capacitance (C) and has a resonant frequency corresponding to the mid frequency of the carrier (33.4 MHzx). A control diode (D) enables the filter to be controlled.