baber/WOPTO huggingface dataset:
Patent DE-2634342-A1 (DE)
Title: Electron beam welding plant - where process parameters are adjusted to match varying gap between two workpieces being welded together
Inventor: ANDERL PETER ING GRAD
IPC: B23K15/00
Filed: 1976-07-30
Abstract: Process and plant are described for adjusting the welding parameters when joining two workpieces sepd. by a gap, where the cross-sectional area (XSA) of the gap varies along its longitudinal direction. Welding is undertaken by an energy beam, e.g. an electron beam. During welding, the XSA is monitored and employed to adjust >=1 welding parameter. The XSA is pref. monitored at a distance (A) in front of the beam, and a delay network employed so the parameter(s) are not adjusted until the measured spot reaches the beam. The XSA may be used to adjust the feed of filler rod, beam energy, workpiece speed w.r.t. the beam, and/or the amplitude of oscillation of the beam between each side of the welding gap. The XSA may be monitored by light, X-rays, gamma rays, or gas, passing through the gap, or by a probe using inductance measurements. Used e.g. for electron beam welding of long plates, >=30 mm, where the width of the welding gap can vary from 0-3 mm, Provides continuous adjustment of welding parameters to suit the gap width.
Patent DE-2636694-A1 (DE)
Title: Solar energy collector with focussing reflectors - has slides covering reflectors for diffuse-light operation
Inventor: HESS HERBERT
IPC: F24S10/50
Filed: 1976-08-14
Abstract: The absorber element is a transparent rectangular duct located in a housing with thermal insulation material. Behind the absorber are reflectors which focus direct radiation into the absorber element. There are moveable slides between the reflectors and the absorber; when direct sunlight is being absorbed these slides are positioned away from the reflectors so that the latter are fully functional. When lighting conditions are diffuse the slides are moved so that the reflectors are covered; the slides are black-coloured and increased thermal absorption efficiency. Used for solar energy collectors giving thermal output to a liquid system, as for building heating applications.
Patent DE-2637317-A1 (DE)
Title: Matted fibre web prodn. from staple fibre fleece - having combed fibres fed to a vibratory hopper for compaction into web with three-dimensional disposed fibres
Inventor: STROBL OTTO ING GRAD
IPC: D04H1/74
Filed: 1976-08-19
Abstract: Matted fibrew web is produced by feeding a stream of fibres to form a fleece which in turn is fed acrss a desired width to a hopper plant in which the fleece is opened into fibres or bundles, the fibres or bundles being then fed to a hopper in which they are compacted into a cohesive web. Appts. includes a carding device supplying staple fibres to a feeding device in which the fibres are formed into the fleece, which is fed by an endless belt conveyor into the nip of a clamping device where a combing drum removes the fibres and feeds them into the hopper. One wall of hopper is vibrated by eccentric rollers to effect the compaction into the web.
Patent DE-2641128-A1 (DE)
Title: Self-adhesive tapes contg. atactic polypropylene barrier layer - which is opt. mixed with hydrocarbon resin and placed between carrier and adhesive layer
Inventor: VITEK ROBERT DIPL ING
IPC: C09J7/29
Filed: 1976-09-13
Abstract: Self-adhesive tapes consist of a carrier, a press- or heat-sensitive adhesive layer and a barrier layer of atactic polypropylene placed between carrier and adhesive layer. Barrier layer adhesion to adhesive layer can be increased by adding a hydrocarbon resin, esp. of mainly linear higher 10-30 (15-22) C hydrocarbons, to atactic polypropylene. Atactic polypropylene can be applied as very thin layers and forms a thin, elastic film having good barrier properties against a carrier of paper, pulp or textiles. Loss of adhesive is prevented. Adhesive tape obtd. combines properties of plastic foil carriers with those of paper. No solvent is needed.
Patent DE-2641575-A1 (DE)
Title: Measurement of coefft. of thermal expansion - uses variation of capacitance with temp. for capacitor having one electrode of tested material
Inventor: FREYGANG HANS-JOACHIM DIPL ING
IPC: G01B7/16
Filed: 1976-09-13
Abstract: A method and arrangement for measurement of the thermal expansion coefficient of material by measuring the capacitance of a capacitor in the heat chamber are designed to produce reliable results free from the systematic errors associated with known methods. The cylindrical capacitor has at least one electrode made of the material whose thermal expansion coefficient is being measured. The relative capacitance variation with temp. is measured and the expansion coefficient derived. The electrode mountings may also be made of the object material. Variations in the dielectric constant of the medium (e.g. air) between the electrodes may be corrected for by calculation or eliminated by measuring under vacuum.
Patent DE-2646614-A1 (DE)
Title: Tractor mounted bale loader - has pick=up delivering bales to inclined conveyor which discharges into ejector mechanism
IPC: A01D87/12
Filed: 1976-10-15
Abstract: The bale loader is supported on a transverse beam (10) mounted on the rear of a tractor (13). It has a pair of side plates (45) which guide the bales onto a conveyor mechanism (14) driven from the tractor power takeoff. The bales are guided along an upper section and ejected at the top into a trailer. The conveyor pref. consists of an endless chain which is trained around a triangular array of pulleys. The ejector is pref. pivotally connect d to a pushing device which may be actuated by two cranked locking levers.
Patent DE-2656342-A1 (DE)
Title: Synergistic antimicrobial water additive compsn. - contains the reaction prod. of epsilon caprolactam and a di:amine, and an oxazolidine deriv.
Inventor: BOERNER ELKE
IPC: C02F1/50
Filed: 1976-12-13
Abstract: An antimicrobial compsn. comprises (1) 40-70 wt. % of the reaction prod. of Epsilon-caprolactam (I) with N-alkylalkane diamines of formula R1R2N-(CH2)n-NH2 (II) (where R1 is 10-18 C aliphatic gp.; R2 is H or 1-4C aliphatic gp.; and n is 2-6) in a (I):(II) molar ratio of 1-10:1 and (2) 30-60wt. % of an oxazolidine deriv. of formula (III) (where R is 10-14C aliphatic gp.; m is 2 or 3, and n is 0 or 1). The compsn. is used to preserve and/or sterilise industrial water (i.e. cooling water, air-conditioning water, etc). The compsn. is usable under adverse conditions in small quantities and does not lead to the formation of resistant species.
Patent DE-2659219-A1 (DE)
Title: Contactless control and current limiting device - is connected in energy supply systems with switch and consists of four arm bridge circuits
Inventor: RUBASCHEV GRIGORIJ MARKOVITSCH
IPC: H01F29/04
Filed: 1976-12-28
Abstract: Bridge circuits contain controlled and non-controlled rectifiers. They are connected to all the tappings to be regulated. Each of the controlled tappings (17-20) is connected to the load through the bridge, whose two arms (3,12) consists of the controlled rectifiers, and the other two arms (13,14) of non-controlled rectifiers, common for all tappings. A reactance coil (15) is provided in the bridge diagonal. The controlled rectifiers are connected in five parallel pairs.
Patent DE-2659717-A1 (DE)
Title: Continuously vulcanising thermoplastic or elastomeric cable coverings - conductor covered with extrusion passes through three thermal treatment sections within one tube
Inventor: BORGMANN KLAUS
IPC: B29C48/06
Filed: 1976-12-31
Abstract: Thermoplastic or elastomer continuous extrusions, e.g. sleeving for electric cables, conductors, tubing, etc. are continuously vulcanised or cross-linked by passing them through a tube and heating/cooling along a predetermined length. At least one part of the thermal treating length is successively passed through three times or more. Provides large effective length within limited space, each part of the length being adjusted to the conditions required. High speed of throughput is also achieved.
Patent DE-2700494-A1 (DE)
Title: Load dependent brake for chair castor - has adjustable pegs screwed into housing support legs and is released by weight acting against spring bias
Inventor: GRIESSER KARL EMIL
IPC: B60B33/02
Filed: 1977-01-07
Abstract: The castor axle bore is larger than the axle dia. to produce a free play (11) between axle and castor housing. The housing is provided with two bores (9) to accommodate springs (3) located above the castor shaft. The brake mechanism consists of a threaded peg (6) screwed into each castor support leg (8). The threaded peg extends through the respective support leg to bear against the castor hub brake edge (7). When the chair is occupied, the weight compresses the two springs to push the housing downwards against the free axle play and release the pegs from the brake surface.
Patent DE-2704420-A1 (DE)
Title: Bench plank having foamed plastics core - reinforced along longitudinal edges with metallic channels and enclosed in glass fibre matt impregnated with setting resin
Inventor: REIMER KARL
IPC: A47C11/00
Filed: 1977-02-03
Abstract: Bench plank has a core made of foamed plastics material which is enclosed along two opposite longitudinal edges by metallic channels, which in turn are enclosed by a glass fibre matt. Core and channels may be formed integrally in a mould and the integral assembly may be placed into a further mould which is lined with the matt impregnated with a thermosetting resin and onto which may be placed a further matt. Marginal edge portions are then overlapped and the mould is closed for curing.
Patent DE-2709042-A1 (DE)
Title: IC engine auxiliary air feed - is between carburettor and inlet manifold and has series of stacked plates with air gaps
Inventor: IBBOTT JACK KENNETH
IPC: F02M23/08
Filed: 1977-03-02
Abstract: The auxiliary air feed system consists of four rectangular plates provided with a spacer disc at each corner. The discs are placed between alternative plates to form an air gap. Each plate has a central opening whose diameter is equal to the inlet manifold junction with the carburettor. The four plates are stacked together and fitted to the carburettor and inlet manifold flange. The spacer discs have central openings to receive bolts passing through carburettor flange and manifold. The distance between each air gap is  1mm and the combined air gap cross section can reach up to 30 per cent of the entire air intake for the carburettor. The air gaps are calculated to be  the critical value that would produce a cross or radial turbulence in the air mixture flow.
Patent DE-2714914-A1 (DE)
Title: Adjustable torque screwdriver with thread colour marking - has colour liq. control unit with pump thruster and associated piston
Inventor: LUST EUGEN
IPC: B25B23/15
Filed: 1977-04-02
Abstract: A screwdriver has a defined adjustable torque. It has a face tooth coupling, the first part of which is connected to the screwing tool, and the other part, when the torque is reached, executes an axial movement relative to the first part. This second part transmits a control movement to a component which causes coloured fluid to be fed out from a supply source in the screwdriver and make a marking on the screw threads. There is a colour channel passing through the screwdriver, and in it is a valve preventing flow-back of the coloured fluid. The colour control unit has a pump thruster (6) with an associated piston (14). Between the piston (14) and pump thruster (6) is a defined dead intermediary space (15).
Patent DE-2716918-A1 (DE)
Title: Plastering compsn. also for mfr. of sheets, filler, modelling cpds. - comprising mixture of gypsum and hard polyurethane or polycarbodiimide foam powder
Inventor: HERWEG PETER
IPC: C04B28/14
Filed: 1977-04-16
Abstract: Gypsum compsn. contains =20%, specifically 3-7%, hard-foam powder as is obtd. is the processing of polyurethane-polyisocyanurate, polycarbodiimide or similar plastics blocks. Specific wt. of the compsn., is smaller than that of the pure gypsum, and provides a useful application for otherwise unserviceable plastics waste. The prod. has good heat-insulating characteristics.
Patent DE-2723305-A1 (DE)
Title: Hydropneumatic suspension for site vehicle - has automatic cylinder lock and pressure sensor to regulate locking cylinder control valve
Inventor: STRAUFF GUENTHER ING GRAD
IPC: B60G17/005
Filed: 1977-05-24
Abstract: The front axle has left and right hydraulic suspension cylinders which can be drained and locked in position for site operation and unlocked and pressurised for normal road use. The cylinder return flow has a pressure sensor fitted upstream of a restrictor. The sensor regulates a control valve so that when a threshold pressure is reached, the locking cylinders are non effective. When a predetermined lower pressure is reached, the locking cylinders become effective. The pressure sensor and the control valve are combined in a common hydraulic selector valve working against a spring force.
Patent DE-2726707-A1 (DE)
Title: Electronic switch for HF receiver - avoids switching noise by rapid switching between two states with variable mark-space ratio switching waveform
Inventor: SCHOLZ WERNER DIPL ING
IPC: H04B1/10
Filed: 1977-06-14
Abstract: The electronic switch is switched from one state (7) to the other (9) intermittently with a varying switching ration. Pref. the switching voltage (Us) comprises a binary voltage with fixed levels (H, L). Its frequency may remain constant during the switching interval and this frequency may be about double the upper limit frequency of the signal to be transmitted. The switching ratio may vary linearly over the switching interval or it may initially be longer, becoming shorter in the middle of the switching interval and then becoming longer again. The switch may be used in h.f. receivers to avoid switching noises or to provide a soft transition between two signals.
Patent DE-2729159-A1 (DE)
Title: Reciprocating pump for concrete - has two cylinders performing alternate suction and delivery strokes and curved pipe from hopper
Inventor: RELF DAVID JOHN
IPC: F04B7/00
Filed: 1977-06-28
Abstract: The reciprocating concrete pump has two cylinders so arranged that when one is on the suction stroke the other is on the discharge stroke. A valve mechanism is included incorporating a curved pipe alternately connecting the cylinders to the material intake, and this has a protrusion working in conjunction with one in the hopper, preventing the pipe being thrust away from the cylinders under the pumping action of the pistons. There can be a pivot axis coupled by a lever to the pipe moving it between alternate positions connected to one or the other of the cylinders, and to compensate for wear the pipe can be adjustable in the axial direction.
Patent DE-2734603-A1 (DE)
Title: Fuel pastes based on oxygen-contg. aliphatic cpd. - contg. inorganic oxide carrier and alkali and/or poly:amine phosphoramide
Inventor: BAEDER ERICH DR
IPC: C10L11/02
Filed: 1977-08-01
Abstract: Fuel pastes with a pH of 5.5-7 comprise (a) 90-99 wt % of an O-contg. aliphatic hydrocarbon cpd. which burns odourlessly and without forming soot or dust, (b) 1-10 wt % of a carrier comprising pyrogenic silica (opt. mixed with pyrogenic TiO2 and/or Al2O3) or pyrogenic alumina with a particle size of 5-50 mu, and (c) 0.01-0.25 wt % of a long-chain polyamine amide (I) derived from phosphoric acid and/or 0.0001-0.02 wt % of an alkali metal hydroxide (II). When (I) and (II) are both present, the compsn. must also contain 0.01-3 wt % of an alkali metal silicate. The paste can be as fuels for heating or cooking, or for igniting wood or charcoal. Unlike the pastes described in DT 1796307, the present compsns. are non-corrosive.
Patent DE-2738246-A1 (DE)
Title: Electric motor speed control circuit - passes speed regulation signal through electronic switches with tachometer circuit
Inventor: SCHMIECHEN ARMIN
IPC: H02P7/285
Filed: 1977-08-25
Abstract: A control circuit is used for variation of the voltage applied to a motor. It receives a tachometer voltage proportional to the speed actual value, and through an electronic switch a signal which disappears when the tachometer circuit is broken. When this signal is absent the control circuit stops current supply to the motor. The control voltage for the electronic switch is generated during the supply voltage switching-on by charging current of a capacitor, and when the motor runs normally by a current flowing through a second switch controlled by the tachometer voltage.
Patent DE-2739321-A1 (DE)
Title: Plastics coated pipe deformed from tape - has face forming inner wall coated with further plastics layer to inhibit corrosion at interface
Inventor: VAHLBRAUK KARL HEINZ
IPC: B29C63/00
Filed: 1977-09-01
Abstract: Metallic pipe which is corrosion resistant on its inner face and additionally provided with a thermally or acoustically insulated layer is made from a tape one face of which is sprayed with plastics powder which is geled onto the tape by roasting prior to coating of the face with a plastics layer. Coated tape has one marginal, longitudinal edge offset to provide an overlapping rebate for the other marginal edge of the tape, when the latter is folded into a tubular element on a heated metallic core coated with a further layer of plastics material. The improvement is that metallic tape coated with a layer of plastics material is coated on the inner face with a further layer of plastics material, which is deformed into an even circular layer by the heated core. Corrosion of tape at the interface of metal and plastics material is prevented.
Patent DE-2742019-A1 (DE)
Title: Tunnelling or shaft borer tooling - as discs axially and radially carried on axis and axially located by dustproof socket screws
Inventor: KLAPDOHR FRIEDRICH
IPC: E21B10/12
Filed: 1977-09-17
Abstract: Roller tool for tunnelling or shaft boring comprises several singly exchangeable tempered and hardened steel discs forming a cutter tool which is radially and axially carried on the tool axis. The discs are screwed together in the axial direction. The discs are pierced by a number of identically spaced holes arranged so that the holes in adjacent discs (1) register sufficiently to admit fixing screws (4) responsible for clamping the discs axially together as specified. The screws should be countersunk socket head cap screws placed so that their sockets can be seales against dust.
Patent DE-2742157-A1 (DE)
Title: Forced commutation of bridge rectifier - uses commutation diodes connected in star, with star point connected to common diode
Inventor: OFFERGELD HELMUT DIPL ING
IPC: H02M7/162
Filed: 1977-09-19
Abstract: The rectifier has thyristors in at least one bridge half, with commutation circuits with diodes connected to the rectifier a.c. phases. They are star connected, with the star point connected to a common diode, an extinguishing thyristor and a capacitor and a commutation inductor. The common commutation circuit (Z) is connected to the rectifier d.c. terminal (1) at the thyristors (T2, T4, T6) whose polarity is opposite to that of iodes in commutation circuits (Z1, Z2, Z3). A loop circuit from one terminal of the extinguishing thyristor (TL) is connected through a coil (TR) in a charge current circuit which regulates the value of the extinction potential.
Patent DE-2742357-A1 (DE)
Title: Optical fibre plug device - has optical fibre section fixed in bore of tube arranged in centring sleeve
Inventor: KEPRDA JAROSLAV
IPC: G02B6/38
Filed: 1977-09-20
Abstract: The optical-fibre plug device has a centering sleeve (9) whose inside diameter is rather larger than the outside diameter of the tube (4). Near the end (2) of the optical fibre the centering sleeve has holes which are suitable for gripping and manipulating the tube inside the sleeve. The centering sleeve may have - at its end (15) aligned with the end of the optical fibre (1) - some grooves (16) which extend radially and emerge into the sleeve bore (8). The tube may be made of metal and have a funnel-shaped construction on its end face.
Patent DE-2742607-A1 (DE)
Title: Evaluation aid for tabular test data comparison - uses reference tables and consists of ruler with divisions and cursors
Inventor: FISCHER WOLFGANG DR
IPC: G09F3/00
Filed: 1977-09-22
Abstract: The evaluation aid is for tabular data and enables an optionally large number of test results to be held and used to produce a summed result by comparison with specially prepared tables. It is designed to enable rapid reliable comparison of individual results from prepared and test tables and hence rapid generation of a reliable total result. The aid consists of a rule with transverse subdivisions each having a movable cursor. It is between 100 and 300 mm long, 20 and 50 mm wide, and 5 and 20 mm thick with between 10 and 30 divisions.
Patent DE-2745292-A1 (DE)
Title: Voltage supply for fire alarm central - uses two equal batteries for signal line and controlled device to increase effective life
Inventor: SCHIERAU KLAUS DIPL ING
IPC: G08B23/00
Filed: 1977-10-07
Abstract: The voltage supply for the central surveillance point of a fire alarm system uses two batteries of equal voltage output one of which provides the line voltage for a two-wire signal line coupled to the central point. The fire detectors are coupled in parallel to this signal line, for provoking variations in the line current, with one wire of the line coupled to a line current monitor supplying the the alarm signal. The other battery is coupled to an alarm source and/or a fire extinguishing device in response to the alarm signal, via two switches. These allow the second battery to be connected in parallel with the first, until the alarm signal is received.
Patent DE-2802783-A1 (DE)
Title: Pressure applying elastic membrane for tyre vulcanising - is fastened on support cylinder or roller to form closed pressurising or evacuating space
Inventor: ZEMME FRANZ
IPC: B29D30/54
Filed: 1978-01-23
Abstract: Elastic membrane which is positioned on the inner surface of a tyre during the vulcanisation process is fastened on a support by a pressure plate or a pressure ring, to form a pressurising and evacuating space. The support has upper and lower boundary surfaces which act as abutments for the plate or ring which is exchangeable. The membrane can have a contoured shape and is provided with mounting or fastening edges which are either smooth or are provided with one or two reinforcing lips. The support has upper and lower boundary surfaces which act as abutments for the pressure ring or plate. A connection is provided to a conduit to a multi-way valve and vacuum pump. Useful esp. for the mfr. of earth mover or agricultural tractor tyres.
Patent DE-2807746-A1 (DE)
Title: Substd. hydrazine and azo-alkyl- or aryl cpd. synthesis - by anodic oxidn. of anions of di:alkyl- and di:aryl sulphamide or alkyl-or aryl-aminosulphonic acid derivs.
Inventor: BAUER REINHOLD
IPC: C25B3/23
Filed: 1978-02-23
Abstract: N,NN'-dialkyl and -diaryl-sulphamides, (I), and N-alkyl- and N-aryl-aminosulphonic acids, (II), are used as starting materials in the anodic synthesis of azoalkanes and N,N'-dialkyl-hydrazines in protic solvents, e.g. water, MeOH, EtOH and other alcohols. The anodic oxidn. of the N-anions of (I) and (II) in protic solvents takes place in opt. divided cells, using anodes of stable material, e.g. magnetite, C or Pt. Prods. are azoalkanes, N,N'-dialkyl- or diaryl-substd. hydrazine-N,N'-disulphonic acids or their dianions. In an exampe, 0.02 mol. N,N-dicyclohexylsulphamide were dissolved in 100 ml MeOH and converted to the N-anion by adding 0.04 mol MeOLi. Oxidn. in the undivided thin layer cell, fitted with a steel cathode and a C anode, formed azocyclohexane in 90% yield and 65-75% current yield.